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الاوضاع الاجتماعية في مدينة استانبول واثر اتجاهات التغريب فيها 1876 - 1908 == Social conditions in the city of Istanbul and the impact of westernization trends in it (1908 - 1876)

Author name: ندى كامل تايه النعيمي
Supervisor name: جميل موسى النجار
General topic: History
Specific topic: Modern and Contemporary History
Degree: Master
University: Mustansiriyah University - Faculty Of Basic Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: Like many other empires in human history, the Ottoman Empire seems to come from nowhere. Often the rise of a new hegemon is a result of the vacuum of power that an old empire leaves behind after entering a period of political and cultural decline. The Turks, or the future Ottomans, had become hegemons in the Middle East and South Eastern Europe not only because of their extraordinary political and military organization, but also because of the exhaustion of the older empires Byzantium and the Abbasids. In the eleventh century, the Turkish tribes living in Iran and western Anatolia were a constant source of mercenary soldiers for the Abbasid caliphs. Their influence was constantly growing and in the middle of the eleventh century they gradually formed a confederation in the region of modern Iran, called the Seljuk confederation. This was possible mainly because in 1055 the Abbasids invited in Bagdad the Seljuk Turkish leader to assume the administrat

الـمـقـيـمـيـة الـبـريـطانـيـة ودورها فـي الامارات الـمـتـصالـحـة1903م ــ 1939م == Dayirat Almuetamad Albritani wuduruha fi aliimarat Almutasaliha 1903 - 1939

Author name: لـيـنا عبد الرزاق مـوسـى الـفـرطـوسـي
Supervisor name: كريم طلال مسير الركابي
General topic: History
Specific topic: Modern and Contemporary History
Degree: Master
University: Mustansiriyah University - Faculty Of Basic Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: This study discusses the political situation in the maritime Magistrate's coast from 1903 - 1939 and in fact occupies the period covered in this study senior important place in the chronological arrangement of the political situation in this region, if where you could say that it was for Britain during this time period the liquidation of the situation to their advantage and was able after 1914 to reap Ammar effort that spanned more than a century in this region, and we can half the period of 1820 - 1914 as laying the foundations of British control in this area stage, it began precisely in 1853, as organized by Britain under Permanent peace agreement foundations of their relationship to this area after it was her crack down on piracy and the slave trade, and on this basis this study was divided on the four seasons' first chapter dealt with the beginning of the 1820 event, the date is very important because it is the date of an agreement with Britain, which marked the beginning of a policy Britain has worked to keep the UAE marine Magistrate Coast disjointed and powerless and seek safety under the protection of the British fleet, and dealt with in this chapter also British policy towards maritime disputes 1853 - 1892 and also the British policy towards the Ottoman policy in the northern coast, and display this chapter how it met a British slave trade, and finally agreement prohibitive 1892And discussed in chapter II arms trade in the Persian Gulf between 1881 - 1914 and the imposition of the British naval blockade on the Gulf, as well as chapter international competitions in the Arab Emirates and visit the Lord Kirzn to the coast of Oman, and discussed in chapter also relationship Trucial with Knight coast and the relationship of the Senate with Saudi Arabia and the Convention on Darren finally most Britons residing in the Trucial CoastThe third chapter examining (the British administration in the Persian Gulf between World Wars I and IIThen search Chapter IV British - US competition for oil concessions in the first Mbgesh.And display the second topic of the emergence of the Japanese activity in the Persian Gulf, as well as the political problems the border between Saudi Arabia and Amart the coast of Oman 1934 - 1938, and concluded the letter included the conclusion most prominent search results, and appendices and a list of Sources and references, which, according to them the messageThis message has relied on a variety of sources, including the British documents publishedThe Persian Gulf Administration Report 1873 - 1957 Vol.3 Archive Editions 1986It is a British reports annual British Resident in the Persian Gulf Bushehr or in Bahrain issued in the form contains the important information about the history of the Persian Gulf, according to the researcher also from a large group of Arab sources, the most important of Jamal ZakariaQassem Gulf study Arab Emirates history in the era of the European expansion the year 1507 - 1840, a source contained on a mission for the Gulf Information in this period affidavit researcher also from many sources, including books Abdul Aziz Abdul Ghani Ibrahim (Britain and the UAE coast of Oman in the treaty relations), which is an important source because he said the nature of the relationship between the two sides and how this was the treaties imposed by Britain on the elders of the Trucial Coast, as well as works of true Akkad and most important (political Altiarac) and also the writer Mohammad FarisParis (the political situation in the United Arab Emirates from 1862 to 1965 the coast) and was a research and published reports in the Arab magazines including Cilt Arabian Gulf issued Center for the Study Gulfincluding the University of Basra

الكهرباء في العراق حتى العام 1968 : دراسة تاريخية == The Electricity in Iraq until the year 1968 Historical Study

Author name: دعاء محمد قاسم
Supervisor name: سهيل صبحي سلمان الخزرجي
General topic: History
Specific topic: Modern and Contemporary History
Degree: Master
University: Mustansiriyah University - Faculty Of Basic Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: Despite the large number of academic studies and historical writings that dealt with the history of modern Iraq in various political, economic and social aspects , but the need has survived to write about subjects that did not write them but little especially topics related to social and economic services and that have great significance in our daily lives , including the electricity.As electric power is one of the fundamental bases which society depend in moving events and economic and social activities, it represents an effective way in the development of the economies communities . - The nature required that the study, divided into four chapters are preceded by introduction and followed by the conclusion.The first chapter included the beginnings of electricity in Iraq until 1932 and is an introductory chapter included three sections , first topic laws in the Ottoman Empire and the beginnings of electricity with the British occupation in Baghdad , second topic beginnings of electricity in the brigades Iraq, while devoted the third section the evolution of electricity services in Iraq until 1932 .The second chapter entitled electricity development in Iraq from 1932 to 1945 As are the three topics included the first part, the political government's position and public opinion of the strike of enlightenment companies and happened to strike because of the high wages of electricity and lack of standardization in the cities by the lighting company , and how was the government's position and the people of that strike and how it ended .The second section covered a expansion of electricity in Baghdad and reach down to the two cities of Kadhimiya and Adhamiya and their access to privileged electricity and it happened in 1932. The third topic : the electricity of brigades Iraq grabbed until 1945 and how electricity arrived in brigades in Iraq .The third chapter was titled electricity projects in Iraq from 1945 - 1958 in the post - World War II to the end of the monarchy And contains three sections , in the first section includes the development of electricity in Iraq after World War II in North, middle and South brigades , while the second section , concentrating the Council on reconstruction projects in the field of electricity in North, middle and South brigades . And the third one of Baghdad nationalization of electricity in 1955 and amend the Baghdad electricity office in 1958 .While the fourth chapter the title of the evolution of electricity in Iraq from 1958 until 1968 since the beginning of the monarchy and the beginning of the revolution of July 14, 1958 to 1968, at the end of the second republican era this Chapter includes the changes in the Council of reconstruction after the revolution of July 14, 1958 and electricity projects in which , then dealt with the Ministry of planning and the Council of economic planning and the most important electricity projects that have taken place at that time and then shed a light on the establishment of the electricity networks .Electric power is one of the basic services which society depend in moving the economic and social activities.The British are the first who enter electricity to Iraq and was limited initially to deliver electricity to the whereabouts and their camps and the first street has illuminate Al - Rasheed Street in the 1 November / 1917 and the first station set up in Baghdad in 1931 is Al - Sarafiya station in Alaboukhanh .Electric power in the first place belonging to the municipalities , when establishing the Ministry of Works and Transport has become belong it , and then became part of the Ministry of Industry in 1959 .After the abolition of the reconstruction and replaced by the Ministry of Planning and the Council of Economic Planning interested in electricity projects and the expansion of electricity stations it was opening of the electricity station in AL - Dura in 1968 due to increased demand for electricity and the expansion of industrial projects as well as the sovereignty of the public sector when the government began to buy foreign projects.The electricity industry considered as an industries on which we depend so much in the life sides of economic and social life , and the annual consumption rate of individual in the industry is measured by the progress of society

تطوير نظام المعلومات المحاسبي على وفق متطلبات سلسلة القيمة لترشيد القرارات الادارية == The development of accounting information system in accordance with the requirements of the value chain to rationalize administrative decisions

Author name: نور فالح حسن
Supervisor name: نضال محمد رضا الخلف
General topic: Administration and Economics
Specific topic: Accounting
Degree: Master
University: Mustansiriyah University - Faculty Of Administration And Economics - Department Of Accounting
Language: Arabic
University location: Baghdad
First pages:
Abstract: برزت اهمية نظام المعلومات المحاسبي من اهمية المعلومات التي تعد حجر الاساس او المادة الخام في صناعة القرار الاداري اذ انها تزود الادارة بالمعرفة اللازمة وتقلل حالة عدم التاكد كما ان توفير المعلومات لكل نشاط من انشطة سلسة القيمة تمكن المديرين من اتخاذ القرارات الرشيدة التي ترفع من مستوى ادائها وتحقق النجاح للشركة , وقد تناول موضوع الدراسة الحالية جوانب مختلفة من التساؤلات وحاول وضع الكثير من الحلول والمعالجات من خلال فصول الدراسة النظرية والتطبيقية الاربعة ، بهدف تحسين جودة نظم المعلومات المحاسبية في الشركة العامة لصناعة البطاريات ومن خلال ربط نظم المعلومات المحاسبية بتحليل سلسلة القيمة. وبعد تبلور الاطار الفكري والفلسفي ومراجعة ما سبق من جهود بحثية ذات علاقة، صيغت فرضية الدراسة لتختبر في شركة العامة لصناعة البطاريات بغية تحديد استعمال نظم المعلومات المحاسبية والتوافق بين جهود انشطة سلسلة القيمة المتمثلة بانشطة البحث والتطوير، والتصميم، والانتاج، والتسويق، والتوزيع، وخدمة الزبون وبما يحقق ترشيد القرارات الادارية. ولاجل اختبار فرضية الدراسة، والتحقق من سريان انموذجه استعمل الاتي : - 1. تحليل الانشطة الرئيسة في شركة العامة لصناعة البطاريات . 2. تحديد الدور المرتقب لنظم المعلومات المحاسبية فى انشطة سلسلة القيمة .3. تحديد معلومات التكاليف التى يجب توفيرها فى انشطة سلسلة القيمة ، والتى تؤدى الى التاثير على نظم المعلومات المحاسبية التى تساعد على ترشيد القرارات الادارية.وانطلاقا من ذلك هدفت الدراسة الى تعزيز دور نظام المعلومات المحاسبي في انشطة سلسلة القيمة لترشيد القرارات الادارية من خلال تقديم انموذج مقترح لتطوير نظام المعلومات المحاسبي على وفق تحليلات سلسلة القيمة لدعم القرارات الادارية. قد توصلت الباحثة الى الاستنتاجات ومن اهما : 1 - الاعتماد على نظام المعلومات المتطور من شانه رفع كفاءة اداء الشركة من خلال امداد المديرين بالمعلومات اللازمة لترشيد قراراتهم . 2 - يساعد نظام المعلومات المحاسبي من رفع كفاءة انشطة سلسلة القيمة من خلال تقديم المعلومات الملائمة لاحتياجات تلك الانشطة . | Emerged the importance of accounting information system and the importance of the information, which is the cornerstone or the raw material in the industry of the administrative decision, as they provide the necessary knowledge management and reduce uncertainty as to the provision of information for each activity in the value chain enabling managers to take sound decisions, which raises the level of performance of the company's success was proceeding, the subject of the current study different aspects of the questions and tried to put a lot of solutions and remedies through classroom theory and four, with a view to improving the quality of accounting information systems in the public company for batteries by linking the accounting information systems analysis of the value chain.After the crystallization of the intellectual and philosophical framework for the review of the related research efforts, formulated the hypothesis of the study to test in the general company for manufacturing of batteries in order to determine the use of accounting information systems and compatibility between the efforts of the activities of the value chain of research and development activities, and design, production, marketing, distribution, and customer service, and that achieves the rationalization of administrative decisions.In order to test the hypothesis of the study, and the verification of the validity of used as follows : - 1 - Analysis of the activities of the chairperson of the general company for manufacturing of batteries.2 - Determining the future role of accounting information systems in the activities of the value chain.3 - Determine the cost information that should be provided in the activities of the value chain, which will lead to the impact on accounting information systems which help to rationalize administrative decisions.Proceeding from that aimed at strengthening the role of accounting information system in the activities of the value chain to rationalize administrative decisions by providing a model of a proposal to develop accounting information system in accordance with the analyzes of the value chain to support administrative decisions.The researcher has reached the conclusions and most important is : 1 - reliance on sophisticated information system would improve the efficiency of the performance of the company by providing managers with the necessary information to rationalize their decisions.2 - The accounting information system helps to increase the efficiency of value chain activities by providing information appropriate to the needs of those activities

القياس والافصاح عن الترتيبات المشتركة وفقا للمعايير المحاسبة الدولية لتعزيز جودة الابلاغ المالي : دراسة تطبيقية في الشركة العامة للصناعات الكهربائية == Measurement and disclosure of Joint Arrangement to Enhance the Quality of Financial Reporting : A Field Study of the General Company for Electrical Industries

Author name: نـور سـمـيـر سـبـتـي
Supervisor name: ابتهاج اسماعيل يعقوب
General topic: Administration and Economics
Specific topic: Accounting
Degree: Master
University: Mustansiriyah University
Language: Arabic
University location: Baghdad
First pages:
Abstract: ان المحاسبة هي لغة الاعمال وتتطور لتلبية المستجدات الاقتصادية والاجتماعية في مختلف دول العالم ، حيث ان هذه التطورات يجب ان تنسجم مع التشريعات والقوانين السائدة مما ينعكس بدوره على اختلاف اسس القياس والافصاح المحاسبي . حيث تهدف الدراسة الى تسليط الضوء على عقود الشراكة مابين القطاع العام والخاص ، وتم اختيار صيغة الترتيبات المشتركة لعينة البحث ، وخلق التقارب الدولي من خلال تبني تطبيق معيار الابلاغ المالي للترتيبات المشتركة (IFRS11) وجعل البيئة الاستثمارية العراقية جاذبة للشركات الاجنبية الرصينة من خلال تطبيق الاطار المقترح لتعزيز جودة الابلاغ المالي . توصلت الدراسة الى هي ان الترتيبات المشتركة هي احد صيغ الشراكة مابين القطاع العام والخاص , وان البيئة العراقية كانت غير مستجيبه للتغيرات الاقتصادية ولم تتكيف معها وهذا ما عكسة النظام المحاسبي الموحد الذي افتقر الى التبويبات والمعالجات المحاسبية الخاصة بالترتيبات المشتركة , ولنجاحها ضرورة توافر بيئة داعمة من الناحية القانونية والتشريعية وتسهيلات الحكومية فضلا عن اتباع المعايير الدولية بهذا الشان ، وقدم البحث عددا من التوصيات اهمها التحديد الصريح لنوع عقود الشراكة مع القطاع الخاص وان يحدد بدقة وموضوعية حيث يعد التحديد السليم خريطة الطريق لاختيار طريقة الابلاغ المحاسبي الملائمة وضرورة اتباع معيار الابلاغ المالي IFRS11)) لتعزيز جودة الابلاغ المالي . | The accounting is the language of business and evolve to meet the economic and social developments in the various countries of the world, where these developments should be consistent with the prevailing legislation and laws, which in turn is reflected at different bases Measurement and disclosure . The study aims to highlight the partnership contracts between the public and private sector, was chosen as a formula joint arrangements for the research sample, and the creation of international convergence through the adoption of the application of standard financial reporting to a joint arrangement (IFRS11) and make the Iraqi investment environment attractive to foreign companies sober through the application of the proposed framework to enhance the quality of financial reporting. Study is concluded that the joint arrangement is a partnership formulas between the public and private sector, and that the Iraqi environment was non - responsive to economic changes and did not adapt and this is reflected in the consolidated accounting system, which lacked the tabs and accounting treatments for joint arrangements, but their success the need for a supportive environment of the legal, legislative and government facilities as well as to follow the international standards in this regard, and the research presents a number of recommendations including explicit delineation of the type of partnership contracts with the private sector and that accurately and objectively determine where is the proper identification of the road map to choose the way of proper reporting of accounting and the need for a standard financial reporting (IFRS11) to enhance the quality of financial reporting

قياس اثر الانفاق العام في التشغيل للمدة (2003 - 2014) العراق : حالة دراسية == Measuring Impact of public expenditure on Employment in Iraq for the period (2003 - 2014).

Author name: علي هادي حميد الدلفي
Supervisor name: عبد الكريم عبد الله محمد المشهداني
General topic: Administration and Economics
Specific topic: Economy
Degree: Master
University: Mustansiriyah University
Language: Arabic
University location: Baghdad
First pages:
Abstract: تعد سياسة الانفاق العام ركنا اساسيا من اركان السياسة المالية, ذلك لما لها من اهمية في التاثير على الاقتصاد الكلي, لذلك تعد من ابرز الادوات الفاعلة التي تستعملها السياسة المالية في التاثير على الطلب الكلي فضلا عن انها تعد احد وسائل السياسة المالية التي تعتمدها الحكومة لتوليد فرص عمل, والحد من ظاهرة البطالة, ومن ثم تحفيز النمو للاقتصاد الكلي للبلد.ومن هذا المنطلق يهدف البحث الى بيان اثر الانفاق العام في التشغيل في العراق اثناء مدة البحث, ومن ثم قياس وتحليل الانفاق الجاري والانفاق الاستثماري في التشغيل في العراق, باستعمال الاساليب القياسية المتقدمة بالاعتماد على انموذج (ARDL), وعلى وفق البرنامج الاحصائي (Eviews9) المتطور, والتحقق من مدى فاعلية السياسة المالية التوسعية في توليد فرص عمل مضافة في الاقتصاد العراقي. ان دراستنا تفترق عن الدراسات السابقة كونها لجات الى بيان اثر الانفاق العام (الجاري والاستثماري) في التشغيل اثناء السنوات السابقة التي مرت على العراق للمدة (2003 - 2014) اي من حيث المدة والمكان, كما ان الباحث تطرق الى ابرز السياسات المولدة للتشغيل .وتوصل البحث الى ان المتغيرات ساكنة عند الفرق الاول, وذلك على وفق اختبار جذر الوحدة, مما يعني رفض فرضية العدم, بسبب عدم وجود اتجاه في تحليل البيانات, كما ان النموذج لا يعاني من مشكلة الارتباط الذاتي ومشكلة اختلاف التباين, كما ان البواقي موزعة توزيعا طبيعيا وان النموذج ساكن هيكليا, ووجود علاقة طويلة الاجل بين المتغيرات, اذ ان الانفاق الجاري(LX2) اكثر تاثيرا في التشغيل في الاجل الطويل والتي بلغت (0.33%) عند تغيره((1%, بينما نجد ان الانفاق الاستثماري(LX3) عند تغيره ((1% يؤدي الى تغير التشغيل بمقدار (0.0011%) اي انه (الانفاق الاستثماري) لم يكن تاثير في التشغيل في الاجل الطويل, مما يعني وجود ضعف في العلاقة(المرونة) في هذا الانفاق الاستثماري, كما ان سببية كرانجر(Granger) اوضحت وجود علاقة سببية بين الانفاق (الجاري) وتشغيل القوة العاملة وباتجاه واحد. | Publie expenditure policy is a corneston of fisical policy because of it,s importance in influencing the macroeconomic, So it considers one of the most effective tools used by financial policy to Influence aggregate demand, and therefore regards as a means of fisical policy which is adopted py state to creat jobs and reducing unemployment and thus stimulate growth in the country. The aim of this paper is to Show the impact of the public expenditure on employmentin Iraq during the period undercosideration and there fore, measuring and analyzing the influerce of operational and Investment expenditure upon employment in Iraq py using ARDL model . In addition, the paper odentified the log ran relation ship between employment and operational pinvestment expenditure. The reseache shows that if we increase investment expenditure by 1% this will lead to in creas employment by 0.33%, ceteris paribus, while if we increase investment expenditure by 1%, this will Lead to decreate employment - by(0.0011%),Ceterisparibus. . This result means that there is a Leakage in this expenditure. The paoer, alos, reveal,s that there is a causal relation ship between operational investment and employment,According Granger - Causaility.

التوجه نحو قرارات الاستثمار في الغاز المصاحب ودوره في تخفيض التكاليف والمحافظة على البيئة == THE TREND TOWARDS INVESTMENT DECISIONS ASSOCIATED GAS AND ITS ROLE IN REDUCING COSTS AND PRESERVING THE ENVIRONMENTAL

Author name: حنان ابراهيم مظلوم
Supervisor name: بثينة راشد الكعبي
General topic: Administration and Economics
Specific topic: Accounting
Degree: Master
University: Mustansiriyah University - Faculty Of Administration And Economics - Department Of Accounting
Language: Arabic
University location: Baghdad
First pages:
Abstract: يعد قطاع الغاز قطاعا مهما في العراق بسبب اهميته الاقتصادية الكبيرة في دعم الاقتصاد العراقي كونه يمثل مصدر دخل ثاني وثابت مع النفط لتمويل الموازنة العامة للدولة ويساهم بالنهوض في العديد من الصناعات التي يدخل فيها الغاز المصاحب او احدى منتجاته في صناعتها . يهدف البحث الى تحقيق اهداف عدة منها عرض القرارات الاستثمارية بصورة عامة وقرارات الاستثمار بالغاز بصورة خاصة ،و توجيه الاهتمام نحو مورد مهم يتم حرقه بالرغم من اهميته ومميزاته المتعددة واستعمالاته الكثيرة، الحفاظ على البيئة من خلال استغلال مورد طبيعي مهم ذو فوائد متعددة وباقل التكاليف ، وتوفير تكاليف الغاز السائل المستورد حاليا لتشغيل مولدات الطاقة الكهربائية . ولقد تم اختيار شركة غاز الجنوب العراقية كمجتمع للبحث وشركة غاز البصرة المشتركة كعينة للبحث واسلوب التطبيق دراسة قرار استثماري وبيان الجوانب النوعية للقرار .ان اهم الاستنتاجات التي توصلت اليها الباحثة هي ( امكانية ان يكون الغاز موردا اضافيا مع النفط لتمويل الموازنة مستقبلا وذلك لان التقدم الفني المتواصل في مجال الغاز وتعدد استخداماته اصبح ضرورة كبيرة للعراق وذلك لاهمية استغلاله وتطويره بشكل مناسب في الوضع الحالي وفي المستقبل، تقليل بعض التكاليف البيئية بسبب استخدام الغاز الجاف كوقود في توليد الطاقة الكهربائية للمحطات الغازية بحيث تقل انبعاث الغازات وبالتالي تنخفض الكلف البيئية حيث ان الوقود المستخدم حاليا يقلل انبعاث الغازات السامة مما يتطلب تحمل تكاليف حماية للبيئة فضلا عن تكاليف الوقود، ان الاستثمار في الغاز المصاحب يؤدي الى تقليل الاثر البيئي للصناعات النفطية والاستخراجية بسبب الحد من حرقه عند فوهة البئر ، واخيرا التشجيع على توسيع قاعدة الاستثمار في الغاز المصاحب بالحقول التي لازال الحرق فيها مستمر ) | The gas sector is an important sector in Iraq because of the large economic importance in supporting the Iraqi economy as a second source of income and steady with oil to finance the State budget and contributes to the advancement in many industries involving associated gas or one of his products in their manufacture.Research aims to achieve several objectives including showing investment decisions in General and investment decisions, particularly gas, and attention is important, resource heartburn, despite its importance and its features and uses multiple, preserving the environment through the exploitation of a natural resource is important with multiple benefits and lower costs, and costs of liquid gas currently imported to run the generators.I have been choosing Iraqi South gas company as a society for research and Basra gas company as a sample for research and application method study of investment decision and statement of qualitative aspects of the resolution.The most important findings of the researcher's (possible to be an additional resource for gas with oil to fund future budget because the continuous technical advancement in gas and multiple uses has become a necessity for great Iraq, the importance of exploited and developed appropriately in the current situation and in future, reduce some environmental costs due to the use of dry gas as fuel to generate electricity to gas stations where gases and thus reduced costs as currently fuels environmental reduces the emission of toxic gases requiring afford Protection for the environment as well as fuel costs, investment in associated gas to reduce the environmental impact of oil extraction industries due to reduce heartburn at the mouth, and finally encourage broadening the base of investment in associated gas fields that still burn in continuous

تاثير التفاعل لاعلان الارباح وتوزيعاتها في العوائد غير العادية باطار نظرية اشارة المقسوم == Impact of interaction effect to announcement of earnings and their dividends on abnormal returns under the dividend signal theory

Author name: ايـمان عـدنان سـعـد المكصوصي
Supervisor name: هشام طلعت عبد الحكيم الونداوي
General topic: Administration and Economics
Specific topic: Business Administration
Degree: Doctorate
University: Mustansiriyah University
Language: Arabic
University location: Baghdad
First pages:
Abstract: تهدف الدراسة الى التحقيق في العوائد غير العادية المتحققة من جراء تاثير التفاعل لاعلانات الارباح وتوزيعاتها، وكيف يقيم السوق الاشارتين في علاقتهما ببعضهما في اطار نظرية اشارة توزيع الارباح التي تتناول تاثير اطلاق المعلومات المالية العامة للشركة. ومعرفة قدرة السوق على دمج هذه المعلومات في اسعار الاسهم لغرض الاستدلال ضمنا" الى كفاءة السوق الشكل شبه القوي من خلال اعتماد منهجية دراسة الحدث. تشمل عينة الدراسة (12) شركة من الشركات المدرجة في السوق المالية السعودية من مختلف القطاعات والتي تلبي المعايير الموضوعة للاختيار، للمدة من(2007 - 2016) والتي شكلت قرابة (83) حدثا" متزامنا". توصلت الدراسة الى مجموعة استنتاجات لا تدعم طروحات نظرية الاشارة اذ تؤكد وجود تسرب للمعلومات في المدة التي تسبق يوم الحدث، ووجود تاخير في انعكاس المعلومات الجديدة في اسعار الاسهم في الايام التي تلت يوم الحدث ساعد في تحقيق عوائد غير عادية ذات دلالة معنوية في بعض المجاميع الفرعية لاعلانات الارباح والتوزيعات المتزامنة، وعدم وجود تاثير تفاعل ذي دلالة معنوية لمتغيرات الارباح والتوزيعات المعلنة في العوائد غير العادية التراكمية. وان السوق يقيم اشارة توزيعات الارباح بمعزل عن اشارة الارباح. ويلاحظ ان مجموعة الشركات التي تزامنت اعلانات انخفاض كل من الارباح والتوزيعات قد شهدت استجابة سالبة تتوافق مع نظرية الاشارة اذ كان متوسط العوائد غير العادية المتراكمة سالبا". وبالتالي رد فعل سوق الاوراق المالية السعودية لاعلانات الارباح وتوزيعاتها يختلف بشكل ملحوظ عن معظم النتائج للدراسات السابقة في البلدان المتقدمة، لكنها مشابهة للنتائج التجريبية التي اجريت في اسواق الاسهم الناشئة وتقدم بعض الدعم لطروحات المدرسة السلوكية. | The study aims to test of abnormal returns achieved from interaction effect to announcement of earnings and their dividends. Moreover, how does the market evaluate the two signs in their relationship with each other, under the dividend signal theory that deal with impact of release of the company's public financial information. And identify the market's ability to incorporating this information in stock prices for purpose of inference the form semi - strong of efficient market by adopting event study methodology, the study sample Include (12) company listed on the Saudi Stock Market from different sectors that meet the established criteria for the selection, for the period of (2007 - 2016) formed nearly (83) simultaneous event. The findings of the study do not support the proposals of the signal theory because confirming the existence of the leak of information in the days before the event day and delays at capturing new information in stock prices in the days and after the event day has helped to achieve abnormal returns were significant in some sub - groups earnings and dividend announcements simultaneous, And a lack of interaction effect significantly to the variables of Earnings and dividends announced on cumulative average abnormal returns. In addition, that the market evaluates the dividend signal isolation from earnings signal. Notes that a group of companies which concurrent announcements decreased both earnings and dividends have seen a negative response consistent with the signal theory, where the cumulative average abnormal returns is negative. Therefore, the reaction of the Saudi stock market to earnings and dividends announcements is significantly different from most of the results of previous studies in developed countries, but they are similar to the experimental results conducted in emerging stock markets and offer some support for the proposals of behaviorism.

انموذج مقترح لترشيق اجهزة الرقابة والتدقيق في العراق من خلال تقنية اعادة الهندسة == Suggested Model For Lean The Control And Audit Bodies In Iraq Through Reengineering Technic

Author name: احسان ذياب عبد
Supervisor name: كريمة علي كاظم الجوهر
General topic: Administration and Economics
Specific topic: Accounting
Degree: Doctorate
University: Mustansiriyah University - Faculty Of Administration And Economics - Department Of Accounting
Language: Arabic
University location: Baghdad
First pages:
Abstract: تهدف الدراسة الى وضع انموذج مقترح لاجهزة الرقابة والتدقيق (مكتب المفتش العام، ديوان الرقابة المالية الاتحادي، هيئة النزاهة، التدقيق الداخلي) يساهم في تحسين مستوى تطويرها، من خلال استعمال انموذج مرجعي. والتعرف على مستوى التطوير لقدرة انشطة هذه الاجهزة في اكتشاف واحباط المخالفات، وتحليل مقارن لقوانينها وتشريعاتها.اعتمدت الدراسة على المنهج الاستنباطي من خلال تكييف اطار بناء القدرات المؤسسية للافروساي، لاستقصاء اراء عينة البحث من قيادات اجهزة الرقابة والتدقيق حول مستوى التطوير المؤسسي لهذه الاجهزة. حيث يتالف هذا الاطار من خمسة مستويات للتطوير وخمسة مجالات وهي : الاستقلالية والاطار القانوني، التنظيم والادارة، الموارد البشرية، معايير ومنهجية الرقابة، الاتصالات وادارة اصحاب المصلحة. ويتضمن كل مجال عددا من العناصر. وتستند هذه المجالات مع عناصرها على المعايير وافضل الممارسات.كما اعتمد منهج التحليل الوصفي لدراسة مخالفات الاجهزة الخاضعة للرقابة والتدقيق وتحليلها وتبويبها وفقا للجهة المسؤولة عن المخالفة ونوعها وقيمتها والاجراء المتخذ حيالها. واجراء التحليل المقارن لتشريعات وقوانين الاجهزة الرقابية، لتحديد مجالات التطوير، ونقاط القصور والتداخل في العمل الرقابي الذي ينتج عنها. وتوصلت الدراسة الى مجموعة من الاستنتاجات من اهمها ان معدل التطوير العام لمكاتب المفتشين العموميين هو 2.47، وقد تخطت معدلات مجالاته الحد الادنى للمستوى الثالث باستثناء اثنان من مجالاته (معاييـر ومنهجيـة الرقابة) و(التواصل وادارة اصحاب المصلحة)، اللذان كان معدلاهما 2.38، 2.19 على التوالي. اما معدل التطوير العام لديوان الرقابة المالية هو 3.27، وقد تخطت معدلات مجالاته الحد الادنى للمستوى الثالث. اما معدل التطوير العام لهيئة النزاهة هو 3.23، وقد تخطت معدلات مجالاته الحد الادنى للمستوى الثالث. في حين كان معدل التطوير العام لاجهزة التدقيق الداخلي هو 1.67، ولم يحقق اي مجال من مجالاته الاربعة معدل الحد الادنى للمستوى الثالث المستهدف 2.50 من 4.00 درجات. لذا فان مستوى التطوير المؤسسي لمكاتب المفتشين العموميين يقترب من الثاني، ولديوان الرقابة المالية ولهيئة النزاهة فهو يقترب كثيرا من المستوى الثالث، اما لجهاز التدقيق الداخلي فهو المستوى الاول. واستنتجت الدراسة ايضا ان مخالفات الادارة العليا (وزير، مدير عام، مدير) تشكل نسبة 41% من اجمالي المخالفات، وتبلغ قيمتها 1276 مليار دينار تقريبا بنسبة 87.5% من اجمالي قيمة المخالفات. وان الاجراءات المتخذة حيال المخالفات تمثل باسترجاع وتوفير واحباط مخالفات بقيمة 146.835 مليار دينار، وهي تمثل 10% من قيمة المخالفات الكلية تقريبا. كما شملت العقوبات القضائية 93 حالة مخالفة. منها 75 حالة حكم غيابي اي بنسبة 80.6% من اجمالي المخالفات التي خضعت للعقوبات القضائية.كما تم تقديم عدد من التوصيات كان اهمها الانموذج المقترح الذي تضمن تاسيس مجلس للرقابة والتدقيق الاتحادي الذي يمثل هيئة تنظيمية مستقلة جديدة للاشراف على اجهزة الرقابة والتدقيق، يضم تحت اشرافه : ديوان الرقابة المالية الاتحادي وهيئة التفتيش والتدقيق الداخلي. التي تضم مكاتب المفتشين العموميين القائمة مع اقسام ووحدات التدقيق الداخلي العاملة في الوحدات الحكومية | AbstractThis study aims at proposing a model for the Control and audit bodies represented by (General inspector offices, Federal board of supreme audit, The Commission of integrity and internal audit), which contributes to improving the development level using a reference model. In addition, identifying the level of development of the ability of the activities of these bodies in detecting and preventing irregularities, and a comparative analysis of their laws and legislation.The study relied on deductive approach by adapting the Institutional Capacity Building Framework for AFROSAI - E, BI Survey sample of leaders of the control and audit bodies on the institutional development levels views of the bodies. The Institutional Capacity Building Framework consists of five development levels, and five institutional development domains : Independence and Legal Framework, Organisation and Management, Human Resources, Audit Standards and Methodology and finally Communication and Stakeholder Management. Each domain contains a number of elements. The domains with their elements are based on standards and best practice.It also adopted Analytical descriptive approach to study of irregularities audited entity and analyzing and classifying them according to the destination responsible, type and value and the action taken on them. In addition, a comparative analysis of legislation and laws of Control and audit bodies to identify areas of development, Weak points and overlap in the audit work that produces it.The study reached to a set of most important conclusions, which are : The general development rate of the General inspector offices is 2.47, domains rates have exceeded the minimum limit for the third level With the exception of two of its domains (Audit Standards and Methodology) and (Communication and Stakeholder Management), which were its rates 2.38, 2.19, respectively. As for the general development rate of Federal board of supreme audit is 3.27, domains rates have exceeded the minimum limit for the third level. The general development rate for The Commission of integrity is 3.23. Domains rates have exceeded the minimum limit for the third level. While the general development rate for internal audit is 1.67, any of the four domains rates did not achieve the minimum limit for the target third level 2.50 of 4.00 degrees. Therefore, the level of institutional development for General inspector offices Close to second level. For Federal board of supreme audit and The Commission of integrity comes very close to of the third level, and for internal audit, it is the first level. The study also concluded, The senior management irregularities (Minister, Director General, Director) accounted for 41% of total irregularities, And valued at 1276 billion dinars Almost, By 87.5% of the total value of irregularities. In addition, that the actions taken regarding irregularities represent recovering, save, and Foil irregularities, worth 146.835 billion dinars, which represents 10% of the total value of almost irregularities. As judicial sanctions included 93 cases of irregularities. Of which 75 cases sentenced in absentia or by 80.6% of the total irregularities that have undergone judicial sanctions.The research was presented a set of recommendations, most important of which was the proposal form. Which included the establishment of a Federal Board on control and audit bodies, which represents a new independent regulatory body to oversee the control and audit bodies, under his supervision include : Federal board of supreme audit and Commission of inspection and internal audit, which included current General inspector offices, and Sections and units of Internal Audit Working in government units.

عملية التعلم المنظمي واثرها في الابداع المنظمي : دراسة استطلاعية في كليات الصيدلة ببغداد == The process of Organizational Learning and its effect on Innovation: an servoy Study in colleges of pharmacy in Baghdad

Author name: بشرى عباس محمد
Supervisor name: صلاح عبد القادر النعيمي
General topic: Administration and Economics
Specific topic: Business Administration
Degree: Master
University: Mustansiriyah University
Language: Arabic
University location: Baghdad
First pages:

تحليل المقدرة التنافسية للدولة في اطار تقييم مشاريع البنك الدولي في العراق بعد عام 2003 == National competitiveness analysis within a Framework Of the evaluation of world bank projects in Iraq after 2003

Author name: اثیر عبد الخالق محمد صالح الجبوري
Supervisor name: ھناء عبد الغفار حمود السامرائي
General topic: Administration and Economics
Specific topic: Economy
Degree: Doctorate
University: Mustansiriyah University
Language: Arabic
University location: Baghdad
First pages:

تقييم تجربة الاجنحة الخاصة في المستشفيات العراقية : دراسة مقارنة

Author name: ازهار ذياب عبد النبي
General topic: Administration and Economics
Specific topic: Economy
Degree: Master
University: Mustansiriyah University
Language: Arabic
University location: Baghdad
First pages:

الانفتاح الاقتصادي وتاثيراته على التنمية في الاردن == The Economic openness and its effects on Development in Jordan

Author name: عبد الله جميل النصيرات
General topic: Administration and Economics
Specific topic: Economy
Degree: Doctorate
University: Mustansiriyah University
Language: Arabic
University location: Baghdad
First pages:
Abstract: The current international system has faced and from the beginning of the nineties decade of the last century, a wide range of structural changes. Which have enlarged in speed and generalization, which have caused radical changes over most of the economical variables which have affected the economical and social situations for all the countries, of the most prominent events in the world from economical developments and which have evolved from different economical and political events arising from its period or getting its roots from the past, are the fall of the previous Soviet union, followed by the changes in eastern Europe, and the scientific different types of living ways ,and the increased role of global economic establishments in controlling the new economical system ,and the emergency of economical collections and regional intents between the different countries .These enormous developments have created a new environment for the economic international relationships, so the developed and developing world have become in the face of an economical theory of (almost unified economical policies with a difference in details, and it is the western economical theory which depends upon the economy and competence market. and increment of the private sector role, and diminishing the role of government, and the developing countries have raced to hold and implement those economical ideas and which are represented by the international and economical opening and limitation of commerce ,and increment of the foreign utilization role, and privatization of the general sector And because the developing countries are facing so many of economical problems, which is represented by the foreign debt and their bearings, and the failure of general offset ,and the failure in payment's offsets ,and the import in flation, and the dominance of foreign investments over most of economies of these states, so the idea of following the economical opening policy have occupied a big concern in developing states in the mean time .so many believe in this policy the curing medicine as the only solution to achieve economical and social development and after the failure of many development strategies .What is applicable to developing countries is so upon Jordan, so Jordan have found that the general interest necessitates going along with the changes and coping with the attitude towards opening and globalization rather than isolation, as being universal global attitudes, so it chose the policy" of universal economical policy as the only solution to achieve the economical and social development.It is important to mention that Jordan has faced in 1988 a shocking economical crises which made him unable to continue its developmental path, and,, paying its foreign debts or serving its bearings ,which have created too many difficulties ,the first of which is getting help from the international monetary fund to reschedule its debts and getting more of it ,and the second to lower the Jordanian Dinner value and the cash instability and the third is to adhere to the prescription of international monetary fund to rebuild the economy ,from here, so a lot of the procedures and legislation’s which are approved by Jordan within the structural adjustment programs, which were done with a previous preparation with the international institutes which were seeing that implementing these policies and procedures is necessary to have a maintained economical development, in addition to its interest in merging Jordan into the international economy through encouraging the policy of universal economic openness. The main objective of the study is to show the extent of economic openness in Jordan to specify the effects of this openness on Jordanian development.Result for studied years (1980 - 2000) showed Jordanian economy is open widely abroad, the rate of its economic openness is (72.5%), and the rate of imports to the gross national product (56.1%). Financial indicators showed that Jordan depends exclusively on abroad in financing the deficit in public budget and balance of payment. Rate of abroad general credit to gross national product (129.2%), and rate of remittance without charge (26.5%).This policy had bad effects on Jordanian Economy materialized in decreasing of national income and the individual's share it and aggravation of unemployment and poverty, The present work showed that population rate under extreme poverty line is (26%) during 1998, and (4.5%) of population is under thorough poverty. Unemployment compromised (27.5%) of the total labor according to non¬ - governmental data.If the policy behind the economic openness is to attract foreign investment, these investments constituted only low rate of (40.4%) out of total investments. The major part of this investments are Arabic investments which were focused on service sector to gain fast revenues with low risks that led to the expansion of this sector at the expense of other economic sectors.The study ends up with recommendations including dependence on the self, the optimum use of national resources, decreasing the dependence on capitalists and thorough economic openness orientation to Arabic nations

Application of Approaches of Mass Customization and its effect Competitive Advantages An Analytical Study for Wassit state Company for Textile Industries - Kut Factory

Author name: حامد كاظم معن
Supervisor name: احمد عبد اسماعيل الصفار
General topic: Administration and Economics
Specific topic: Business Administration
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
Abstract: Describe mass customization system as the main of excellence and achieve sustainable competitive advantage and high profitability, also research based on the idea of substantial that the constant change in the needs and desires of customers divers mean intensification of the conflict in the field of competition in the business environment , which generates pressure on companies led to inevitability of the adoption of new technologies and new trends in production , represented by (mass customization system ) in order to achieve competitive advantage thereby increase profits the research was based on two variables interact with each other to form the frame of mind to him , are (mass customization approaches as the depended variable, the research initiate of problem expressed introduced a number of questions aimed at answering her knowledge of the theoretical aspects of these variables being one of the modern application topics , and then diagnosed effect adoption of mass customization in achieving competitive advantage in the wassit state company for textile industries / knitting factory and because of importance of these approaches and the need for adoption at the factory , which achieve thus competitive advantage . The study chapters include theoretical coverage of problem , the researcher depended on information in the literature of subject and accumulated knowledge in this area . As the research include applied aside based on key assumption and sub assumption specialized department including diagnosis of correlation between the mass customization approaches and competitive advantage , while the other section diagnosise singled relationship with the impact of the application of those approaches to achieve competitive advantage. Wassit state company for textile industries - knitting factory was chosen as a site to conduct research and researcher used variant statistical tools of analysis and processing of data and information using statistical system( spss).The research style was a prospective study - analytical being comprehensive analysis style and deep for problem. The researcher reach to the fact that the existence of relations correlation effect between the variables , and researcher presented a set of recommendation s that serv the factory , as if they were taking them based on the conclustions that have been reached , it was most notably the need to adopt factory mass customization a pproaches and need to take to achieve competitive advantage

تطبيقات النظم الخبيرة وتاثيراتها في الرقابة الداخلية : دراسة ميدانية في البنك المركزي العراقي وبعض المصارف العراقية == Expert systems applications and their impact on internal control - Field study for Central Bank of Iraq and some Iraqi banks

Author name: نور علي راضي
Supervisor name: سلوان حافظ حميد
General topic: Administration and Economics
Specific topic: Accounting
Degree: Master
University: Mustansiriyah University - Faculty Of Administration And Economics - Department Of Accounting
Language: Arabic
University location: Baghdad
First pages:
Abstract: يهدف البحث للتعرف على النظم الخبيرة التي تستخدمها المصارف المسجلة في سوق العراق للاوراق المالية وتسليط الضوء على دور تلك النظم لاسيما (نظام المدفوعات الالكتروني ونظام تبادل المعلومات الائتمانية) وتاثير تلك النظم في ضوابط الرقابة الداخلية لعينة من المصارف العراقية المسجلة في سوق العراق للاوراق المالية وتم اجراء دراسة ميدانية على البنك المركزي العراقي وبعض المصارف التجارية المسجلة في سوق العراق للاوراق المالية وهي (مصرف الخليج التجاري، والمصرف المتحد للاستثمار، والمصرف الزراعي التعاوني ) ، وتم تحليل ضوابط الرقابة الداخلية على مكونات النظم الخبيرة التي تستخدمها تلك المصارف واقتراح عدد من الضوابط على وفق الاطر والادلة والارشادات الدولية التي تعنى بضوابط الرقابة الداخلية في ظل استخدام تكنولوجيا المعلومات فضلا عن النظم الخبيرة ، لمعالجة نقاط الضعف في الاجراءات الرقابية على تلك النظم للمصارف عينة البحث ، ولاختبار تلك الضوابط المقترحة فقد استخدمت الاستبانة لغرض تحقيق هدف البحث وايجاد العلاقة وقياس مقدار تاثير استخدام النظم الخبيرة في ضوابط الرقابة الداخلية وتم ادخال وتشغيل البيانات ومعالجتها اليا باستخدام نماذج احصائية لتحليل النتائج واختبار الفرضيات .وتوصلت الباحثة الى ان هناك علاقة ارتباط بين نظامي المدفوعات ونظام تبادل المعلومات الائتمانية وان استخدامهما ( استخدام النظم الخبيرة ) يؤثر وبنسبة ضئيلة في ضوابط الرقابة الداخلية على كافة مكونات النظام وبنسبة تتراوح بين 5 - 18% .لذا تستطيع المصارف ان تعمل على تطوير نظمهواتحديثها باستمرار لاسيما ضوابط الرقابة الداخلية وذلك بالاعتماد على الاطر والارشادات الدولية التي توضح ضوابط الرقابة الداخلية التي يمكن اعتمادها في ظل استخدامها للنظم الخبيرة او يمكن تطبيق برنامج التدقيق المستند الى المخاطر . | The aim of study is to identify the concepts of expert systems as a kind of artificial intelligence applications, which is a new and wide use, especially in banks, as well as clarify the internal controls in light of database systems (and expert systems) and yours, according to in a statement the practice of statements and roles, and determine the use of this statement in the evaluation and improvement of internal controls and the impact of the use of these systems on the internal control department in a Central Bank of Iraq and some Iraqi banks (commercial Bank of the Gulf, and the United Bank for Investment, and Agricultural Cooperative Bank) through examination of the use of expert systems in those banks to determine their impact on the media and internal control procedures for banks and find out how you can develop and improve all internal control activities for those banks and compare in this sample of banks. To achieve this has been to rely on descriptive and analytical approach to books and research and scientific literature on the subject of study in the theoretical side, also adopted a researcher at the practical side on interviews with the competent authorities of the sample of research and analysis of regulatory reports and banking systems to see weaknesses in the regulatory actions on those electronic payment.The researcher found that there was a correlation between expert system(the payment and the credit information Exchange system) and that the use of had a small percentage of controls on all components of the system and a ratio of 5 - 18% .Banks must therefore continually develop their systems, especially internal control controls, relying on a risk - based audit programs

مركز النافذة الواحدة وتاثيرها في الاداء المكتبي : دراسة استطلاعية في دائرة جوازات ميسان == Single window center and its impact on desktop performance Exploratory study in the Department of Passports of Missan

Author name: جعفر حسين نغيمش
Supervisor name: فؤاد يوسف عبد الرحمن
General topic: Administration and Economics
Specific topic: Business Administration
Degree: Higher Diploma
University: Mustansiriyah University
Language: Arabic
University location: Baghdad
First pages:
Abstract: يناقش الباحث متغيرين يتمثل الاول في مركز النافذة الواحدة والمتغير الثاني الاداء المكتبي اذ يعد نموذج النافذة الواحدة من الاتجاهات الحديثة الذي يستخدم لتقديم الخدمة من منفذ واحد او سقف واحد لتقليل الجهد للزبون والسرعة في اجراء المعاملات دون عناء يذكر.وقد حددت مشكلة البحث بعدد من التساؤلات كان اهمها تحديد مستوى العلاقة بين ابعاد النافذة الواحدة والاداء المكتبي واختبرت الدراسة في دائرة جوازات ميسان وقد تمت صياغة فرضيتين رئيستين تنبثق منها فرضيات فرعية وكانت الفرضية الرئيسة الاولى هل توجد علاقة ارتباط ذات دلالة معنوية بين النافذة الواحدة والاداء المكتبي, اما الفرضية الرئيسة الثانية فكانت هل يوجد تاثير ذو دلالة معنوية لمركز النافذة الواحدة في الاداء المكتبي .ولاختبار فرضيات الدراسة تم جمع البيانات من خلال استخدام استمارة الاستبانة بوصفها اداة رئيسة طرحت من خلالها ( 36) فقرة وزعت جميعها على مجتمع وعينة الدراسة والبالغة (47) منتسبا من موظفي دائرة الجوازات استخدم الباحث مقياس (ليكرت ) الخماسي فضلا عن تحليل البيانات باستخدام مجموعة من الاساليب الوصفية والاحصائية وتم استخراج النتائج باستعمال برنامج ( spss) وقد افرزت النتائج والتحليلات الاحصائية وتوصل الباحث الى اهم النتائج هي( هناك ميل لدى دائرة الجوازات باهمية النافذة الواحدة لانها تساهم في وضع افراد المجتمع امام مسئولياتهم وعدم التساهل امام المحسوبية وكافة اشكال الفساد الاداري والمالي) وكذلك يوصي الباحث باهم التوصيات منها( استخدام ابعاد النافذة الواحدة والعمل على تفعيلها في الدائرة المبحوثة بشكل صحيح بعد ان تبين ان هناك علاقة ارتباط في الاداء المكتبي وهذا يؤدي تقديم خدمة جيدة للزبائن) | The study aims at testing and measuring the impact of the single - window center on the performance of The office. The single - window model is considered one of the modern tendencies used to provide the services via one single ceiling, or one single outlet, so as to reduce the effort exerted by the customers, and to accelerate the performance of motions with the least possible effort. The problem of the study is limited to a set of questions at the top of which is the level of relation between the dimensions of the single - window and the offices performance. The study selected Missan Governorate Passport Directorate. Two major hypotheses were formed form which several minor hypotheses arise.The first major assumption is : Was there any significant correlation between the single window and the office performance? As for the second assumption, it is : Was ther a significant impact for the single - window and the office performance?In order to verify the hypotheses of the study, data was collected by means of a questionnaire form as being a main tool which contained 36 items distributed on the study population and sample which included 47 staffer from the personnel of the passports Office. The researcher used the five - dimensional Likert scale, in addition to the analysis of the data using a set of descriptive and Statistical methods. Results are deduced by using 'SPSS' program. Results and analyzsis were reached at and the researcher concluded that : "There is a statisticslly significant correlation between the independent variable of the single - window center and the variable of the office performance

حساب توزيع الطاقة الممتصة في راس الانسان باستخدام نطاق الفرق الزمني المحدد لانظمة الاتصالات المتنقلة == Computation Of Sar Distribution In Human Head For Cellurlar Mobile Communication Systems Using Fdtd

Author name: هويدا كمال عبد الفتاح
Supervisor name: عضيد حسن سلومي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: Widespread wireless communications system in the last few years, leads people to ask many questions about the advantages and disadvantages of those systems, especially about electromagnetic waves pollution and their effect on human health.The mobile device is frequently used by the general public from adult to child, one of the main sources of electromagnetic waves and very close to the human head. Therefore the focus of this research on the impact of electromagnetic waves from mobile to human health by measuring the Specific Absorption Rate (SAR), at the human head and the hand through SEMCAD - X that uses the Finite Different Time Domain (FDTD). SAR computation uses (FDTD) in the way the limited space of time, to calculate the specific absorption rate. The results have been compared with standards averaged over any 1 g of tissue and averaged over any 10 g of tissue. It didn't exceed the applicable standard.This work evaluates specific absorption rate (SAR) at different ages of three people. Firstly, old man, who was estimated to head 100% size of header used in the program SEMCAD - X. Secondly Adult man was estimated his head by 85% size of header used in program, and finally the child who was estimated his head by 65% size of header used in the program SEMCAD - X, the design hand has been used with all cases.The design of the mobile phone software works in four different packages of frequencies; the packets are the center frequencies 900MHz 1800MHz, 2100MHz and 2400MHz, when increased frequency the SAR increased but in the some state and frequency decreasing.The Evaluation of SAR in the head and the hand of the user device and the generic phone, the highest value of SAR decreases with increasing distance between the generic phone and the user's head and reducing the proportion was 50% for the old man, 40% for adult man and 35% for child. It can be noted that the angle of the rotation of the various frequencies is not fixed, while the ratio approximately is 25% for each angle of rotation.Also, it can be noted that for fixed frequency, the input power is increased to a double and the SAR have been used increased almost to a double.The different positions show that the methods of holding generic phone have a significant impact on the value of SAR. Therefore, the value of SAR can be reduced into 90% when using the correct method.The evaluation of SAR in these cases shows their influence on children and it was much greater than the adult human or old human by parentage 40% old man and 35% adult man.

تمييز الحروف العربية المعزولة المكتوبة بخط اليد باستخدام الشبكات العصبية == Recognition Of Isolated Handwritten Arabic Letters Using Neural Networks

Author name: نهلة ظاهر حبيب بهية
Supervisor name: منذر نعمان التكريتي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: يتناول هذا البحث مشكلة تمييز الحروف العربية المعزولة المكتوبة بخط اليد باستخدام الشبكات العصبية. ان نظام تمييز الحروف العربية المقترح يتكون من ثلاث مراحل وهي : مرحلة مسح صور الحروف العربية ثم مرحلة معالجة الصور واخيرا مرحلة التدريب والتصنيف.ان المرحلة الاخ | This thesis presents an algorithm for recognition of an off - line isolated handwritten Arabic letters using neural networks.The handwritten recognition system present in this work consists of three modules : - 1 - Arabic letter scanning module 2 - Arabic letter preprocessing module 3 - Learning and recognition module.The proposed neural network in the third module is trained in two stages : The first stage employs Self - Organizing Map learning algorithm for clustering the input pattern, which are based on a database of 196 letters collected from 7 independent persons.In the second stage each of the similar output cluster is considered as a subnet introduced to neural network trained by Back - propagation learning algorithm for classification. Several networks architecture are designed in the second stage using 1 - hidden and 2 - hidden layers with 5 and 28 output nodes in the output layer with different number of hidden nodes and learning rate.To examine the efficiency of the system a database of 196 letters collected from other 7 independent persons are used, (in order to test the ability of the trained network to generalize). The results show that clustering the input pattern, using 1 - hidden layer and 28 nodes in output layer improve the network performance. The system was implemented using (IBM - PC) of type Pentium 3.The programming language used to design the system was c++ version 5.02.

استراتيجية السيطرة على المقوم ثلاثي الاطوار المضمن بعرض النبضة (PWM) نوع رافع للجهد ولمصدر تغذية متغير الحالات

Author name: منتظر كاظم عبد الله
Supervisor name: تركي كحيوش حسن
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: In this thesis, a proposed control strategy is presented to improve the performance of the PWM boost type rectifier when operating under different supply voltage conditions (balanced, unbalanced, and distorted three - phase supply voltages). The proposed control strategy is classified into two parts, the first part is voltage controller and the second part is current controller. In the voltage controller, Repetitive Controller (RC) is used to reduce the even order harmonics in the regulated output dc voltage (5.62V (P.P.)) so small output capacitor (480µF) is used instead of large capacitor (920µF) that is used with the conventional controller (PI controller connected in series with a LPF). RC also reduces the even order harmonics (0.014A (P.P)) which appears in the reflected dc current (IMAX), this leads to reduce the odd order harmonics (0.01A) which appears in the input currents. While in the current controller, enhanced Phase Locked Loop (EPLL) technique is used to obtain sinusoidal and balanced three phases, to construct the reference currents, which are in phase with the fundamental supply voltages Therefore, the supply - side power factor is kept close to unity (0.9036 for extremely distorting case). As a result the calculations of the reference currents in the proposed control strategy does not require Clarke or Park transformations, the same for the calculations of the positive or negative sequence components. A proportional controller is used to give excellent tracking between the line and the reference currents. Using this approach makes the control strategy easy to understand and also it saves calculation time of the control algorithms if implements in real time. The complete system with the proposed control strategy is simulated using Matlab/Simulink (Version 2012). The obtained results for the complete system using repetitive voltage controller are compared to the results of the system with using the conventional voltage controller. The results with the repetitive controller show better responses and stable operation in the steady state under different input voltage conditions, as well as in the transient response under different disturbances.

مبدل فوتوفولطائي مايكروي احادي المرحلة نوع فلايباك المغذي للشبكة == Single Stage Grid - Connected Flyback Photovoltaic Microinverter

Author name: مصطفى عباس فضل
Supervisor name: تركي كحیوش حسن
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: Solar energy systems based on photovoltaic (PV) cells have attracted considerable interest in recent years due to their abilities of clear and seemingly limitless generated energy. Solar energy systems based on microinverter architectures are earning in publicity as they are less prone to shading and PV cell malfunction since each PV panel in the system has its own low power inverter.In this thesis two alternative modes of operation for the current source flyback microinverter are suggested : the discontinuous conduction mode (DCM), where a constant switching frequency (CSF) control method is applied, and the boundary conduction mode (BCM) between continuous conduction mode (CCM) and DCM, where a variable switching frequency (VSF) control method is used. These two control methods are analytically studied and compared in order to establish their advantages as well as their suitability for the development of an inverter for grid - connected PV applications.An optimum design methodology is developed, aiming for an inverter with the smallest possible volume for the maximum power transfer to the public grid and wide PV energy exploitation. The main advantages of the current source flyback microinverter are very high power density and high efficiency due to its simple structure, as well as high power factorregulation. The design and control methodology are validated by Powersimulation software (PSIM) and a laboratory hardware prototype is buildusing analogue and digital devices.The microcontroller type (PIC - 18F45K22) is used to implement perturb and observe (P&O) maximum power point tracking (MPPT) algorithm, and C language is used for programing the microcontroller. The simulation and experimental results are obtained to verify the proposed flyback microinverter.

تحقيق دائرة المعدل الثابت للانذار الكاذب باستعمال منظومة البوابات المنطقية المبرمجة موقعيا == Modified GO - CFAR Implementaion Using FPGA

Author name: مصطفى صبحي كمال
Supervisor name: رفعت طالب حسين | حكمت نجم عبد الله
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: هذه الاطروحة تتعلق بتحليل ومعالجة تاثير الضوضاء المحيطية (Clutter) لمنظومة الرادار النبضي، يتطلب رادار الكشف الالي للهدف استعمال عتبة الية (Adaptive threshold) لتحقيق معدل ثابت للانذار الكاذب وذلك لغرض السيطرة على الانذار الكاذب الذي تسببه تغيرات في الضوض | This thesis deals with the analysis and processing of clutter for pulsed radar system. Automatic target detection radar requires adaptive thresholding achieved by Constant False Alarm Rate (CFAR) circuit in order to control the false alarm caused by variations in clutter background.This work focus on worst radar environment that happens when abrupt variation in clutter background merged with multi - interfering target, to detect target in such environments it need robust CFAR algorithm that excise the target spikes and clutter edges from CFAR window in order to give best possible estimation to the noise background. two important algorithms studied which are CA - CFAR and OS - CFAR algorithms in additional to the modified CA - CFAR algorithm. All these algorithms were simulated with mat lab v6.1 and applied them to three different clutter models that represent different environment cases the CA - CFAR family failed to handle model two and three also OS - CFAR family except OSGO - CFAR that handle all models successfully. For modified CA - CFAR family only modified GO - CFAR handle all models successfully and comparing with OSGO - CFAR the modified GO - CFAR need less hardware and processing time because it did not need sorting process that is essential for OSGO - CFAR. Therefore, the modified GO - CFAR is chosen to implement by using FPGA and another important feature in modified GO - CFAR algorithm that is parallel processing since the spike selection process is done at the same time with summing of samples process that make this algorithm much less in processing time from any other algorithm that work in the same environment. The FPGA chip that used to implement modified GO - CFAR algorithm need only three signals from the radar receiver to mach with the receiver circuit correctly which are time base clock signal period reset trigger signal and the pulse duration time. Therefore, the FPGA chip can work effectively with almost any radar receiver system

مسيطر السرعة المثالي بالاعتماد على المتجه المسيطر لمسوق محرك التيار المستمر عديم الفرش == Optimal Speed Controller Based On Vector Controlled For A Brushless DC Motor Drive

Author name: مصطفى بشار عبد الملك
Supervisor name: تركي كحيوش حسن
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: اصبحت محركات التيار المستمر عديمة الفرش شائعة جدا في الكثير من المجالات مثل في الصناعة والتطبيقات المنزلية؛ وذلك يعود الى مميزاتها العديدة على محركات التيار المستمر ذوات الفرش والمحركات الحثية؛ مثل كفائتها العالية, كثافة قدرتها العالية وحجمها الصغيرنسب | Brushless DC (BLDC) motors have become very popular in various fields such as in industry or home appliances; and that is due to their many advantages over the brushed DC motors and the induction motors such as their higher efficiency, high power density and respectively low volume. The traditional and most popular way to drive BLDC motor is by using six - step or trapezoidal technique. This technique however has several problems such as high torque ripple and high distortion in the currents. This thesis presents a BLDC motor drive system where the performance of the motor is improved on various aspects. The first aspect is to improve the speed response by using particle swarm optimization (PSO) technique to find the optimal parameters of the speed controller. The second aspect is to reduce the torque ripple associated with the traditional driving technique and also improve the dynamic response of the motor by using vector or field - oriented control to drive the motor. The third aspect is improving the total harmonic distortion (THD) of the voltages and currents by using multilevel inverter. The last aspect is driving the motor in sensorless operation for reduced cost and for applications where speed and position sensors cannot be used; this operation uses a flux - linkage observer with a phase - locked loop (PLL) structure to estimate the position and speed of the rotor. The control methods are modeled using MATLAB/Simulink program and the results show that the proposed systems has significant improvement in performance as compared with the traditional technique in terms of speed response, torque ripple and THD of the voltages and currents

التاثيرات الكهربائية والبصرية لتشويب اغشية اوكسيد الخارصين (ZnO) المكونة لمتحسس الاشعة فوق البنفسجية بالفضة == Electrical And Optical Effects Of Ag Doped ZnO Thin Film Based MSM UV Photodetectors

Author name: محمد وسام ناجي
Supervisor name: منير عبود هاشم | غصون محسن علي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: يستخدم اوكسيد الخارصين (ZnO) لكشف الاشعة فوق البنفسجية وذلك لكبر فجوة الطاقة وكبر طاقة اثارة الربط لهذا الشبه موصل. اوكسيد الخارصين كذلك يمتلك سرعة اشباع عالية وفولتية انهيار عالية. في هذا العمل تم تصنيع متحسس اشعة فوق بنفسجية نوع (معدن - شبه موصل - معدن) با | Zinc Oxide (ZnO) has been commonly used for ultraviolet detection due to large band gap and excition binding energy. ZnO has high breakdown electrical field, also has a much larger saturation velocity. In this work three ultraviolet Metal Semiconductor Metal (MSM) photodetectors were fabricated, based on ZnO and Silver (Ag) doped Zinc Oxide (SZO) with (2% and 4 % doping ratios) thin films. The technique used to prepare the thin films was sol - gel and spin coating technique by using Si (100) p - type. Silver interdigitated (IDT) electrodes were deposited on the films by a vacuum coating deposition technique to form the three devices.The electrical properties for the fabricated photodetectors (PDs) were studied using Semiconductor Characterization System (SCS) at room temperature ( 27 C^o). The applied voltage was in the range of ( - 5 to 5) V.The SEM images showed a non - uniform distribution of the Ag dopants, these dopants formed clusters and these clusters increased as the amount of Ag dopants increased. The mobility, carrier concentration, and roughness for the SZO films increased when compared to undoped film. The optical bandgap and the transmittance are decreased when the doping ratio is increased. The saturation current (I - S) was decreased by a factor of 4, and 12 for the devices based on Ag doped ZnO (with 2% and 4 % doping ratios) thin films, respectively. The sensitivity was significantly increased with increasing the doping ratio. This enhancement attributed to the roughness of the Ag dopants (clusters). The detectivity was increased for the devices based on SZO films. The high detectivity with low saturation current made the devices based on SZO films suitable for optoelectronic applications and integrated circuits. From the experimental data and analysis, it was found that the PD with ZnO : Ag 4 % doping ratio has higher responsivity and gain of 0.523 A/W and 257 , respectively. This is confirmed by thin film and device characterization which makes this PD suitable for UV detection purposes.

النمذجة التحليلة لاداء الثنائي الضوئي p - i - n == Analytical Modeling Of A P - I - N Photodiode Performance

Author name: محمد شهاب احمد
Supervisor name: منیر عبود ھاشم
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: The analysis of a silicon p - i - n photodiode with a uniform doping concentration in each layer is presented. The theoretical treatment aims at investigating the device operation and performance to obtain optimum values of photodiode parameters when operates as a photodetector.Large bandwidth, good responsivity, device speed and quantum efficiency at wavelength of interest, combined with its low operating voltage and capability, make this diode promising for optoelectronic receiver circuits for use in optical communication systems and computer interconnections.High speed silicon p - i - n photodiode which operate at 700 nm wavelength is reported. By using a reverse bias voltage to control electric field, a high quantum efficiency of 80% is attained corresponding to bandwidth of 6.5 GHz at depletion width of 5.36 ?m and biasing voltage of 27.5 V. The minimum detectable incident light signal power is 3.9 ?W corresponding to signal to noise ratio of 6.5*104. The results show that, there is trade - off between quantum efficiency and bandwidth. Since the intrinsic layer of a p - i - n photodiode can be made with a lightly doping concentration, a p - ? - n photodiode is also treated mathematically with a software tool, and the results obtained are very close to those for a p - i - n photodiode. The results are achieved with the aid of MATLAB programming tool version 8.1.0.604 (R2013a).

Design And Fpga Implementation Of Neural Network

Author name: مثنى حاجم حمد العامري
General topic: Control and Systems Engineering
Specific topic: Control and systems engineering
Degree: Doctorate
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: The use Artificial Neural Networks (ANN) can be a form of Artificial Intelligence (AI). The feedforward neural network has a wide application area such as pattern recognition, image compression, and classification problem. Two models of a feedforward neural network are proposed and implemented using the schematic editor of the Xilinx foundation series 2.1i. Model - 1 consists of two layers and specializes in solving linear problems. Depending on the type of application, the input layer can receive 2 to 126 input values ordered in 256x16bits RAMs. The connection weights are distributed over four 256x16bits RAMs where, the four RAMs exchange their active role in swapping operation. Model - 2 is a modified copy from Model - 1 and consists of three layers and it is responsible for classifying non - linear problems.The mathematical model of the data set (weights and inputs) is presented in a matrix multiplication format. Principle Component Analysis (PCA) is a modern method used to reduce patterns set dimensionality and hence speeds up the training phase iterations. Speeds up the training phase will eventually minimize the over all system execution time. Each model is designed and implemented in five stages without using the finite state machine. It controls the processes of the forward propagation phase, error calculation, and training algorithm. These processes are managed by many control circuits like, J - K synchronized circuit, sign - detector/sum - sub control circuit, and timers that takes the role of finite state machine. These five stages make the design easily to implemented and modified. Modification in the system parameters (No. of inputs, No. of outputs, or No. of layers) can be performed in the appropriate stage without reservation.The flexibility, low costly, and real - time operation are the main features of the proposed design. Model - 1 execution time is 2.935µs and model - 2 execution time is 2.96µs, while the costs of two models are 1927 and 2017 CLBs respectively.These features compare extremely well with other existing designs with good advantages.

تصميم وتنفيذ معالج باستخدام TM - CFAR مصفوفة البوابات المبرمجة FPGA == Design And Implementation Of TM - CFAR Processor Using Field Programmable Gate Array

Author name: علي هادي عبد الواحد
Supervisor name: وليد خالد عبد علي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: This Thesis proposes on a project whose aim is to implement architectures for CFAR processor employed in radars. These proposed architectures are implemented by using Field Programmable Gate Array (FPGA) technique, with observance of feature desired as flexibility and speed without performance loss. This design written in VHDL Hardware Description Language that can be used to accelerate the implementation. In this thesis, the proposed by design is implemented using MATLAB Simulink on the Trimmed - mean Constant False Alarm Rate Processor(TM CFAR) to obtain system parameters and to test the flow of signal through the system, and then used FPGA devices. FPGA architecture of TM - CFAR processor is implemented to overcome the large processing time required in case of multi - target environment. The use of this technology is suitable because it offers high flexibility in modifying and even developing the required design with a reduction in the required number of hardware and cost. In addition to the main features of the processing chain architectures such as degree of parallelism, small size, accuracy and high computational speed, there is a requirement for generality and adaptively i.e. the ability to handle many different models of operation in different environments. The FPGA implementation of the design is achieved using Xilinx Virtex - II platform as a suitable selected programmable device. The development of the system software for this work has been done using Active HDL 3.5, and ISE Navigator 6.3i programs.

تمييز الاهداف الرادارية وذلك عن طريق استخدام الشبكات العصبية وافضلية الحشد الجزيئي == Radar Target Recognition Using Neural Network And Particle Swarm Optimization

Author name: علي ناظم غالب
Supervisor name: وليد خالد عبد علي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: In the last decades, the pattern recognition and classification are taking an important area of the research. One of the main applications of pattern recognition is the radar target recognition which is vital in radar system.In this this work, a radar signal were used and analyzed for three targets present a contribution is this trend (aircrafts SR - 71, C - 130 and AH - 64), and used as initial data, then variations are made to simulate the target signal variation (50 range profile for each target).A wavelet transform (multi resolution decomposition) is used to reduce the dimensions of radar range profile and then leads to reduce storage and computation.The wavelet transform including two procedures, the first one using approximation and details coefficients as feature extraction, while second procedure use related with the details coefficient only.Artificial Neural Network (ANN) is used as recognizer. The Feed Forward Neural Network (FFNN) and Elman Recurrent Neural Network (ERNN) are used. The network was trained using Supervised Learning Algorithms. The FFNN was trained by (Levenberg - Marquardt (lm), Bayesian regulation (br), particle swarm optimization). The (ERNN) was trained by (lm, br).The best recognition rate of three targets is obtained by using the feature extraction from (normalized details wavelet coefficient) and the ERNN trained by (br). The recognition rate in this procedure is about 96% compare with other methods.When adding the AWGN S/N=5db, the recognition rate reducing to 85%.

تمييز الوجوه اعتمادا على التحويلات الكونتورية ومصنف الشبكة العصبية متعددة الطبقات == Face Identification Based On Contourlet Transform And Multi - Layer Neural Network Classifier

Author name: علي فتاح حسون
Supervisor name: ماهر خضير محمود
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: Face recognition plays an important role in many applications like security, banking, access to buildings, and surveillance …. etc.Because of the face image can significantly change due to changing in some factors, such as lighting conditions, facial expression, and others factors, therefore face recognition is still a challenging mission. Useful properties of the Contourlet Transform (CT) are exploited in this thesis to investigate more discriminant features to enhance the face identification performance. In this thesis, a face identification system is suggested based on CT, and Multi - Layer Neural Network (MLNN) Classifier. The main reasons behind using the CT are : First, the CT supports progressive data compression/expansion, hence it is used for image compression. Second, the features in human face are not just horizontal or vertical. CT is utilized for feature extraction because it is a genuine 2D transform that can capture the edge information in all directions. After decomposing an image by CT, low and high frequency coefficients of CT are calculated in different scales and various angles. Most significant information of faces is contained in coefficients, which is important for face identification. The frequency coefficients are utilized as an input feature vector for a neural network classifier. Simple feed forward MLNN neural network is used to achieve the identification process. The network parameters are tuned to optimal values, in order to produce fair comparison between different types of feature vectors. To evaluate the algorithm performance, seven standard databases, and a proposed database are used. Some of them are of high variability, to examine the algorithm robustness against variability. In addition, the proposed algorithm is also evaluated using a generated database composed from five databases. Then the suggested method is compared with other classical feature - based methods such as, wavelet, Principle Component Analysis (PCA), and CT - PCA. The results indicate that the CT - based method has better identification (ID) rate, and is faster than the Wavelet - based and the PCA - based methods. This is due to the high sparsity of the CT and its efficient capability of compression. The ID rates obtained for a tested databases are Japanese Female Facial Expression (JAFFE) database (100%), face 94 database (99.34%), proposed database (98.55%), ORL database (96.5%), Senthil database (92%), Yale database (90%), FERET database (76.2 %), and FEI database (72.57 %), and comparing with other systems, an average identification rate 90.64% for the CT, 85.71% for the Wavelet, 53.92% for the CT - PCA, and 46.7% for the PCA for all tested databases.Moreover, the characteristics of low and high frequency sub bands a are studied with their effect on ID rates. The simulation results indicate that the best identification rates are obtained when using only the low frequency sub - band for all tested databases

استخدام اغشية اوكسيد الخارصين (ZnO) الرقيقة في متحسس لتركيز الهيدروجين من نوع ترانزستور تاثير المجال ممدود البوابة == Zinc Oxide Thin Films - Based Extended - Gate Field - Effect Transistor (EGFET) As Ph Sensor

Author name: علي عزام عبد اللطيف
Supervisor name: رعد حمدان ظاهر | غصون محسن علي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: ظهر في السنوات الاخيرة اهتمام ملحوظ في استخدام متحسسات تركيز الهيدروجين (الرقم الهيدروجيني) من نوع ترانزستور تاثير المجال (FET) في التطبيقات الطبية الحيوية مثل دم الانسان, اليوريا واللعاب لان عملية تصنيع متحسسات تركيز الهيدروجين تتجه نحو التكلفة المنخفضة | In recent years, there is noteworthy interest in using pH - sensors based on Field Effect Transistor (FET) in biomedical applications such as human blood, urine, and saliva because the fabrication of pH - sensors is tending toward low cost, small size, disposable, and real - time measurement. In this work, Extended Gate Field - Effect Transistor (EGFET) pHsensors were built using thin films of Zinc Oxide (ZnO) doped with Palladium (Pd) as sensing membranes. The Pd - doped ZnO thin films with different molar concentrations (Pd = 0%, 2% and 4%) were deposited onto p - type Si(111) substrate by sol - gel method. The surface morphology of the prepared films was imaged and studied by Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM). The crystal structure of the fabricated films was examined by X - Ray Diffraction (XRD) test. The optical and electrical characteristics of the films were measured using spectrophotometer and Hall - Effect measurement device, respectively.The EGFET pH - sensor has been prepared by linking the fabricated sensing devices to the gate terminal of a commercial Metal - Oxide - Semiconductor Field - Effect Transistor (MOSFET CD4007UB).The fabricated sensing devices were immersed in buffer solutions with pH range of (pH 3 ? pH 11). The pH sensing characteristics of ZnO and Pd - ZnO/silicon EGFET devices were studied using Semiconductor Characterization System (SCS - Keithley 4200).The ZnO EGFET sensor exhibits voltage sensitivity and linearity of 31.5 mV/pH and 0.9809 (or 98.1%) in linear regime with pH range of (pH 3 - pH 11). The voltage sensitivity and linearity of Pd - doped ZnO (with 4% molar concentration of Pd) EGFET device in the linear regime with pH range of (pH 5 - pH 11) are 27.86 mV/pH and 0.9785 (or 97.85%), respectively. The experimental results show that the Pd - doped sensing films by sol - gel method cannot be adopted for whole pH range. This means that the doped films have fewer amounts of H+ ions sensing sites at its surface than undoped ZnO fims.

تحليل الاشارات المشفرة ثنائيا باستخدام الترشيح الموائم وغير الموائم لتقليل الفصوص الجانبية == Analysis Of Binary - Coded Signals Using Matched And Mismatched Filtering For Sidelobe Reduction

Author name: صلاح حسن عباس
Supervisor name: اسماعيل محمد جابر
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: Various types of binary phase - coded signals are studied in terms of their correlation properties. Then, matched filtering technique as well as mismatched filtering techniques is applied to the codes studied previously in order to reduce the sidelobes of the compressed binary phase - coded signal around the mainlobe, and consequently increase the detection of the received signal. Each filtering technique is performed using programs written by the programming language of MATLAB version 7.4.0.287 (R2007a). White Gaussian noise is introduced in the assessment made to both the filtering techniques and the codes that are adopted in this thesis.The MATLAB programs are tested on various types of binary phase codes that are adopted in this thesis to calculate the criteria to choose the best filtering technique. These criteria are peak sidelobe level, the integrated sidelobe level, and the signal - to - noise ratio loss. Later, the results, which are obtained according to these mentioned criteria, are used to test different filtering techniques on the chosen periodical and aperiodical binary phase codes to choose the best one.It is found that, the optimal peak sidelobe level (PSL) filtering technique is the best filtering technique for the aperiodical binary phase codes in terms of the peak sidelobe level, and in terms of an acceptable signal - to - noise ratio loss. The optimal integrated sidelobe level (ISL) filtering technique comes in the second place.While, it is found that, the mismatched filtering technique is the best filtering technique for the periodical binary phase codes in terms of an acceptable signal - to - noise ratio loss.

تصميم وتحليل هوائيات مغيرة الرقعة للتطبيقات ذات الحزمة العريضة == Design And Analysis Of Slotted Patch Antenna For Wideband Applications

Author name: سيف ناظم غالب الساعدي
Supervisor name: رعد حمدان ظاهر
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: The main objective of this work is to design, fabricate and test irregular, diamond wideband microstrip patch antenna which satisfy UWB. A series of parametric study is conducted to show how the characteristics of the antenna depend on the various geometrical and other parameters. These geometrical parameters of the antenna include the dimensions of the patch, feeder and ground plane. Slots are inserted different shapes and sizes in antennas to show which give different bandwidth. The first designed antenna has regular pentagonal patch and 50? microstrip line on one side of dielectric substrate and partial ground plane with square slot on other side. This antenna gives dual bandwidth 2.73 - 7.5 GHz and 8.7 - 20 GHz. This antenna is modified by changing the patch from regular to irregular pentagonal patch with the same area and fixe the other parameter of the antenna. Therefore, the antenna is improved in term of bandwidth and gain, which gives bandwidth of 2.74 - 20 GHz. Many slots with the different shape and size are added to the irregular pentagonal patch to modify this antenna, which makes this antenna have bandwidth of 2.6 - 20 GHz which is suitable for the application that operating in this band. The second design consists of diamond patch and microstrip feed line on one side of dielectric substrate and partial ground plane has square slot on the other side. This antenna is modified by adding three slots in the patch which modifies the gain, so this gives bandwidth of 2.3 - 18.5 GHz. The third design consists of irregular pentagonal patch that is fed by 50? Coplanar Waveguide (CPW) and 4 - step stair added to ground plane is printed on one side of dielectric substrate and c - shape independent piece on other side. This antenna gives bandwidth of 1.48 - 14.2 GHz which is suitable for the applications that operating in this bandwidth. The fourth antenna consist of diamond patch that fed by 50? Coplanar Waveguide (CPW) and 4 - step stair added to ground plane is printed on one side of dielectric substrate and independent piece on other side. This antenna is suitable for the applications which is operate in band of 1.35 - 16 GHz. The design and simulation of the antenna is carried out using CST microwave Studio simulation software.

محول خفض الفولتية المستمرة باستخدام المكثف المفتاحي == Switched - Capacitor Based Step - Down DC - DC Converter

Author name: سؤدد زاحم حسين
Supervisor name: تركي كحيوش حسن
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: المحـــــــــــول الخافـــــــــض للــــــــــــفولتيـــــــــة المستمرة ذو المكثف المفـــــــتاحــــــــي (Switched Capacitor DC - DC Converter ) يمكن ان يستعمل للتحويل الكفوء للطاقة حيث نجد انه عندما لا تستعمل المحاثات في دوائر التحويل يؤدي الى خفض حجم | Switched - capacitor (SC) - based step - down DC - DC converter can be used for efficient power conversion when inductors are not used in order to reduce size and cost. In addition, switched - capacitor DC - DC converters are superior to inductor - based converters for high - conversion ratio and wide range of load variation. In this thesis , a multistage current - controlled switched - capacitor step - down DC - DC converter is analyzed , designed and simulated. The converter features are of good regulation capability and continuous input current waveform when two step - down converter cells are connected in parallel and operate in antiphase. Classical SC converter with pulse width modulation technique is also analyzed, designed , simulated. For the PWM converter and current - controlled converter , third - order state - space averaging technique is used for analysis. A fuzzy logic controller is used with the current - controlled converter to obtain fast dynamic response, low ripple in the output voltage and robustness against load and supply variations. A 70W ,48/12V and 12.5W 48/5V converters are designed and simulated ( Matlab/Simulink is used for simulation). The simulation results are obtained and compared for the above converters with different control techniques (PWM ,current control with PI controller and current control with fuzzy controller). The results for current - controlled converters with fuzzy controller show higher efficiency , lower ripples in the output voltage ,fast transient response, good disturbance rejection and very small steady state error of output voltage. In this thesis the value of the output ripple must less than 0.05 V and the efficiency should be more than 75 % for current control mode

نظام الاخفاء الصوري المعتمد على تحويل المويجة والاشارات الفوضوية

Author name: سرى فهمي يوسف
Supervisor name: حكمت نجم عبد الله
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:

ترميز القناة المرتكز على الاشارات الفوضوية == Chaos Based Channel Coding

Author name: سراب كمال محمود
Supervisor name: حكمت نجم عبد الله
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:

خوارزمية فعالة للسيطرة على التردد اثناء تغيير الحمل في منظومة القدرة == An Effective Algorithm Of Load Frequency Control In Power System

Author name: ساره عباس حسين
Supervisor name: قاسم عبد الرزاق الانباري | عباس حسين مري
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: في السنوات السابقة، زادت اهمية تحسين النظام الكهربائي. وان ثبوت التردد هو واحدة من الاشياء التي اثرت في خصائص النظام الكهربائي هي ثبوتية التردد. ولهذه الغاية، وحدة التوليد ملحقة بمسيطر اوتوماتيكي على التردد اثناء تغيير الحمل (LFC) لتنظيم القدرة الفعالة | In recent years, the importance of improving electrical power has been increased. One of the things influenced the characteristic of electrical power is the constancy of frequency. To this end, the generator unit is equipped with an automatic load frequency control (LFC) to adjust the active power produced and restore the frequency and tie line power exchange to their nominal value.The total model of a hybrid power system has a high dimension. The classical design tools are inadequate to cope with all dynamic features. Artificial intelligence techniques are found to be a promising tool to optimally minimize the transient dynamics and control efforts in a load frequency control. This thesis shows the execution of various Artificial Intelligence techniques on the tuning of PID controller in a load frequency control system to compute the PID controller. The techniques of genetic algorithm technique GA, particle swarm optimization PSO and artificial bee colony ABC were applied on four areas, six tie lines power system. The dynamic model was formulated in state variables form. A comparison between these techniques with different performance indices was presented. Results of the test system 1 and 2 were computed and compared. They showed that in test system 2 the load frequency controller can chase the load fluctuation in a short time. The IAE performance index gives an optimum dynamic performance using ABC. From the outcomes, they show that the test system 2 outputs regarding settling time and maximum overshoot were the best performances.

الرؤية المجسمة لتخمين المسافة باستخدام SAD مع مرشح كشف الحواف Canny وتقنيات التعويض == Stereo Vision Distance Estimation Using SAD And Canny Edge Detector With Interpolation Methods

Author name: زيد خضر حسين
Supervisor name: رعد حمدان ظاهر
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: Stereo vision system is a technique for finding depth data for digital images.The stereo vision system is used to obtain a 3D data from 2D scene taken by two optical cameras (left and right cameras); the taken images can be used to find the distance of the objects. A number of algorithms for stereo vision system have been developed and the matching algorithms. This work focuses on the traditional algorithms used the Normalized Cross Correlation (NCC), Sum of Absolute Differences (SAD) and the modified version of SAD algorithm. This method is called the Canny Block Matching Algorithm (CBMA) which can find the disparity map. The proposed algorithm contains two parts; the Canny edge detector and Block matching technique with SAD to determine the disparity map and reduce the execution time, the execution time of the CBMA is between (0.35 - 0.43secs) and neglected the effect of the windows size results in the CBMA algorithm. The interpolation method is used which consists of median filter and interpolation techniques (i.e., the most common techniques : bilinear, 1st order and 2nd order polynomial) to enhance the output results images.The error percentage has been reduced about 2% for the disparity map of the CBMA algorithm after used the bilinear interpolation method with block size [3x3] and the execution time is reduced by the step size windows. MATLAB program has been adopted to write the proposed algorithms codes. While, the interpolation techniques has been implemented using in Microsoft Visual Basic (6.0). The camera calibration and image rectification is used to find camera parameters and to simplify the correspondences search. The system was implemented using two identical cameras with baseline (16cm) to detect the distance objects.

تصميم شبكة استشعار لاسلكية متينة لمراقبة استهلاك الطاقة == Robust Wireless Sensor Network For Energy Monitoring

Author name: حيدر عبد الحميد محمد جواد العبيدي
Supervisor name: حكمت نجم عبد الله | طارق محمد سلمان
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: There has been a quick development in the Wireless Sensor Network (WSN) field that promises to revolutionize the way people lives. Where they have a wide range of applications especially in the monitoring applications like power consumption, military, and healthcare. This thesis has three objectives. First, to design and implement a prototype of WSN for monitoring power (as well as temperature) in buildings. Second, to investigate the bounds of coverage in different building construction materials. Third, to evaluate the amount of improvement introduced to the ZigBee transceiver when channel - coding methods are used.The basic design elements of the implemented power and temperature monitoring system includes current sensors, temperature sensors, microcontrollers, and wireless transceivers implemented using Global System for Mobile Communications/General Packet Radio Service (GSM/GPRS) platform and ZigBee technology. The use of GSM/GPRS platform allows the user to control or gather information about the system from anywhere just by sending a request using Short Message Service (SMS). In addition, the measured data can be visualized through a user friendly Graphical User Interface (GUI). Many measurements have been done to find the exact limitation of the designed system in terms of coverage and signal strength in the presence of objects of different materials including; cardboard, metal, concrete bricks, wood and corkboard. Furthermore, the MATLAB Simulink model of the proposed ZigBee transceiver uses Convolutional Coding (CC) at different code rates to improve the performance in AWGN channel, Rayleigh and Rician multipath fading channels.The results indicated that the use of ZigBee based WSN in electric power monitoring provides flexibility and helps in reducing power consumption. In addition, the experimental results show that the construction materials of buildings have varying impact on the network performance. At 4m distancebetween the base station and the sensing node, the losses in signal strength are 15, 20, 21 and 32 dBm when using metal as compared with cardboard, corkboard, wood and concrete bricks respectively.It is observed from the simulation results that using convolutional coding in ZigBee transceiver gives better performance than the traditional ZigBee transceivers and that the convolutional code of code rate 1/8 gives the best performance compared to other CC. In AWGN channel and at BER of 10 - 4, the maximum performance improvements in terms of BER obtained over traditional system are 14dB and 13.5dB for OQPSK and BPSK (868 - 900MHz) based ZigBee respectively. While these improvements are 23.5dB, 40.5dB and 19.5dB, 12.5dB in Rayleigh & Rician channels at the same BER respectively.

تصميم وبناء شاحنة بطاريات ذكية لمنظومة القدرة التي تعمل بالالواح الفوتوفولطائية == Design And Implementation Of An Intelligent Battery Charger For A Photovoltaic Power System

Author name: حسين سعود مرض
Supervisor name: عصام محمود عبد الباقي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering - Power and Machinery
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: ان الهدف الرئيسي من هذه الرسالة هو استخدام الطاقة الشمسية لشحن بطاريات الرصاص الحمضية. تعتبر الشاحنة من اهم اجزاء المنظومة الشمسية وذلك لكون بطاريات الخزن هي الجزء الوحيد المحدود العمر منها. بطاريات التخزين ضرورية في جميع المنظومات الكهربائية الشمسية المس | The main goal of this thesis is to use the photovoltaic (PV) power to charge Lead - acid batteries. The charger is the most important part of the solar system because the only limited - age part of this system is the storage batteries. Storage batteries are essential in all standalone PV power systems. Their efficiency and life time affects significantly the overall PV system performance and economics. The storage battery's effectiveness depends on the charging process. Hence, this thesis deals with the study, simulation and design of an intelligent charger fed by solar system due to the latest technologies.The developed charging method entitled "the decreased charging current based on state of charge" is adopted in this thesis to charge a lead - acid battery. The principle of decreased charging current is to make the real charging current as close as possible to the maximum acceptable current. The advantage of this technique is to mix between the rapidity of charging and prevents of the overcharging and generates gases.The maximum power point tracking (MPPT) technique is adopted to maximize the PV output power, whatever of the temperature and irradiation conditions. The design considers different operating conditions of load, battery state of charge (SOC) and ambient effect in order to achieve the best charging condition of the batteries and to be compatible with the user requirements. The flexible, simple and cheap design is the objective of this charger.This PV charging system is composed of a solar panel, lead - acid batteries, buck converter as power charging circuit and a microcontroller as a control unit.The simulation results are achieved by using Simulink Proteus Isis Professional software. These results demonstrated the validity of the proposed charging technique. The battery charger prototype was tested and the obtained results agree with those obtained from the simulation

اداء التجميع المتعامد لاشارات تقسيم الشفرات المتعدد الوصول ذات الحاملات المتعددة (Rayleigh) عبر قناة الخفوت الترددية الاختيارية من نوع == Performance Of Group Orthogonal Multicarrier Code Division Multiple Access Signal Over Frequency Selective Rayleigh Fading Channel

Author name: حارث اكرم ناصر العبيدي
Supervisor name: مها جورج زيا
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical and Electronic Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: مع ظهور قنوات الخفوت الترددية الاختيارية المتعددة المسارات. اصبح نظام تقسيم الشفرات المتعدد الوصول (CDMA) يعاني من التداخل بسبب تعدد المستخدمين (MUI) والتداخل بين الرموز(ISI) ولكن مع التصميم المناسب لنظام تقسيم الشفرات فانه يوفر التفريق الى مسارات متعدد | In the presence of frequency selective multipath fading channels, code division multiple access (CDMA) suffers from multiuser interference (MUI), and intersymbol interference (ISI), but when properly designed, it enjoys multipath diversity. Orthogonal frequency division multiple access (OFDMA) is MUI free, and it does not enable the available channel diversity without employing error control coding. But coded OFDMA may achieve lower diversity than a CDMA system employing the same error control codes. In this work, the advantages of OFDMA and CDMA are merged to minimize MUI effects, and also to make the maximum available diversity for every user possible, this system is called group orthogonal multicarrier CDMA (GO - MC - CDMA).In group orthogonal multicarrier CDMA (GO - MC - CDMA) scheme, groups of users share a set of subcarriers. By carefully choosing group subcarriers, there is aguarantees that every user transmits with maximum diversity. MUI is only present among users of the same group, and is suppressed via multiuser detection, which becomes practically feasible by assigning a small number of users per group. The performance of GO - MC - CDMA system is analyzed with 3M bits/sec in two paths frequency selective Rayleigh fading channel. Moreover, simulations are carried out to illustrate the performance of GO - MC - CDMA with number of active users, number of subcarriers, space diversity combining technique, types of spreading code, type of data detection techniques, finally, the effect of near - far problem.

تقييم اداء نظام الاتصالات المتعدد المستخدمين المرتكز على متجهات فوضوية متعامدة == Performance Evaluation Of Multiuser Communication System Based On Orthogonal Chaotic Vectors

Author name: بسمة نزار ناظم
Supervisor name: ماهر خضير محمود
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: In DS - CDMA systems, the use of orthogonal spreading codes with low cross - correlation values is needed to suppress the effect of multiple access interference (MAI) which increases as the number of active users in system is increased.Currently, the conventional PN sequences, such as (Gold codes, Kasami codes …etc.), generated by linear feedback shift registers (LFSRs) and orthogonal variable spreading factor (OVSF) were used as spreading codes in DS - CDMA system. Using these sequences, it is not possible to increase the number of active users in the system due to the fact that the possible sequences generated in conventional PN - system are limited in number and offer mutual interference as the number of active users is increased due to its non - zero cross - correlation values. The chaotic system can be used to generate very large number of quasi - orthogonal sequences compared with the number of PN sequences due to its sensitivity to initial conditions. Another type of chaotic sequences with zero values of cross - correlation called Orthogonal Chaotic Vectors (OCVs) is generated using chaotic systems and the basic idea of Gram - Schmidt ortho - normalization process.In this work, the use of OCVs in synchronous DS - CDMA system for transmission of data over (AWGN, Flat fading and Frequency selective channels) is introduced. The simulation results show that the DS - CDMA based on OCVs gives better BER performance when spread factor ? is greater than the number of active users due to the reduction of MAI between active users.Results show also that, at BER = - in AWGN channel and for 5 users, there are gain of (0.3, 1.2, 1.75 and 3.75) dB between system based on OCVs and systems based on small set Kasami sequence, Gold codes, large set of Kasami sequence and Non - OCVs respectively. Under the effect of flat fading channel, it can be noted that at BER = - and for 30 user, there is 1.7 dB gain between system based on OCVs and system based on small set of Kasami sequences, and this gain increases to 2 dB for 50 user.Under time invariant frequency selective fading channel and for 8 users at BER= - there is about 6dB gain between the system based on OCVs and system based on Non - OCVs.

تعديل التشويه في الصور الرقمية باستخدام خارطة التشويه والمرشحات الضبابية == Correction Of Deformed Digital Images Based On Deformation Map And Fuzzy Filters

Author name: ايهاب ابراهيم كاظم
Supervisor name: ظافر رافع زغير | محمد علي توفيق
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical and Electronic Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: During the last decades the development in digital image acquisition, capturing, processing and displaying devices is one of the fastest growing fields. Most of these devices introduce some amount of geometric lens deformation and cause uncorrected dimensions in displaying the objects, such as cameras, scanners, lenses, and mirrors.This work introduces a general algorithm use to correct the images deformed by a fixed and known properties sources. A simple prototype system consists of convex mirror and digital camera has been constructed to capture the required reflected scene. The proposed algorithm considers three main processes; correction, filtering, and edge enhancement. The idea of the proposed correction method is based on selecting an original image, capturing its reflected view from the convex mirror, and then obtaining the deformed ratios for each row and column between the captured image and the original image. These ratios represent the raw components to what referred here as the deformation - map. This map is considered as a general pattern for the proposed prototype system, to be used later in correcting the deformed images.The correction process depends mainly on stretching - padding - cropping. In the first operation, each row and column is stretched to a length depends on the corresponding compression ratio's element in the deformation - map. The second operation modifies the size of the image by adding pad array to the end sides, while the third operation crops the image to the required size.The Filtering, and edge enhancement processes are based on using fuzzy median filter to deblur and smooth the corrected images, while fuzzy edge detection is used to enhance the edges of corrected images.The deformation - map has been examined on correcting several deformed images. The results show high capability of considering this map as a general correction model for the images captured by the proposed system.

موثوقية نقل بيانات بمعدل عالي باستخدام متعدد المداخل والمخارج لقناة متعددة المسارات == Reliability Of High Data Rate Using MIMO For Multipath Channel

Author name: ايمان احمد فرحان
Supervisor name: رعد حمدان ظاهر | محمود فرحان مصلح
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical and Electronic Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: The most important type of MIMO is the Spatial Multiplexing (SM) which is used to increase the data rate depending on the number of transmitted and received antennas. The main challenge of SM is high Bit Error Rate (BER) at low Signal to Noise Ratio (SNR), which leads to increase the power expended, and this not match the modern requirements of communication system.In this thesis, the performance of MIMO system for Space Time Block Code (STBC) and SM has been investigated. As expected the STBC increase the reliability of data rate while SM increase the data rate with significant BER. Three types of detection have been experimented with SM; Maximum Likelihood (ML), Minimum Mean Square Error (MMSE) and Zero Forcing (ZF). The results show that ML is outperform each MMSE and ZF, but as it is known the complexity of ML increase exponentially with number of antennas and modulation order. ZF is simple one, but it has poor performance.The proposed system is to add channel code serially with SM and maintain the low complexity. The experiments are begun with Convolution Code (CC) to support SM performance. The results show that significant improvement is achieved using this code with ZF detection, it can be getting more than 10 dB of SNR as code gain. But the payment is the redundancy information which can be reduced by using puncturing technique. Also the complexity of Viterbi decoder grows exponentially with large constraint length. The second code is a Low Density Parity Check (LDPC) code which is proposed with suitable parameters to reduce the required iterations in order to achieve real time application for such system. The results confirm that the proposedscheme is outperform the CC by 3 dB of SNR in addition to acceptable complexity and less number of iterations

الدالة الغامضة للاشارة الرادارية المرمزة == Ambiguity Function Of Radar Coded Signals

Author name: اياد عطيه عبد الكافي الجبوري
Supervisor name: نزار خليل وفي | وليد خالد
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronics and Communications Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: تم دراسة انواع متعددة من تر ميزات الاشارة الرادارية حيث تم التركيز في هذه الدراسة على خواص الارتباط والغموض للتر ميزات. كذلك تم التركيز على تاثير دوبلر على تلك الخواص. تم دراسة تاثير الخطا الطوري والتعيير(Weighting) على خواص تلك الترميزات. الدراسة ال | Various types of coded radar signal are studied in this study in terms of their ambiguity and correlation properties. Doppler effect on the ambiguity and the correlation functions of these codes is studied. The effect of phase error and weighting are presented.The study related to Doppler effect covers the frequency, binary and polyphase codes in terms of the peak signal to sidelobes ratio (PSR).Linear FM, nonlinear FM, binary and polyphase codes with various windows, are dealt with respect to the sidelobes response. The simulator built using Matlab version 6. The simulation consists of a code generator; modulator; white noise adder; received signal with time and frequency shifted; matching filtering; a module to find the Doppler effect on the autocorrealtion function and a module to find the peak signal to sidelobes ratio (PSR). It is found that the m - sequences are the best binary codes in terms of PSR and the P4 code is the best Polyphase code in terms of PSR. Also, it is found that the P4 code provides better Doppler tolerant than the other codes. The m - sequences are very sensitive to Doppler shifts. Concerning the frequency codes : it is found that the nonlinear FM is more sensitive than the linear FM i.e., linear FM is Doppler tolerant while the nonlinear is not. Finally, it is found that the use of time weighting produces a response with extremely low sidelobes

تصميم ومحاكاة نظام اتصالات امن يرتكز على النظام الفوضوي عبر قناة كاوس الضوضائية == Design And Simulation Of Secure Communication System Based On Chaos Over AWGN Channel

Author name: امير كاظم جواد
Supervisor name: حكمت نجم عبد الله | سعد سفاح حسون
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical and Electronic Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: مع زيادة التطور الكبير الذي يحصل في علم الاتصالات ومع وجود قناة عامة (public channel) تنتقل من خلالها المعلومات زادت المشاكل التي تخص القناة وبالخصوص مشكلتين رئيسيتين هما انتهاك الخصوصية ووجود الضوضاء. بخصوص امنية الاتصال : بما ان القناة عامة وبامكان اي م | With the significant development in communication systems especially with the public channel through which information travels, there are increasing in the channels problems. Among these problems, the two important should be addressed are the information security and the noise. In this thesis, an efficient communication system with high security and high immunity against noise has been proposed. From security perspective, the proposed scheme uses two levels of encryption based on chaotic systems. The first level is chaotic scrambling, while the second level is chaotic masking. Two levels of chaos based encryption make information very secure during their transition in the channel because the key space becomes too large. The simulation results show that the Segmental Spectral Signal to Noise Ratio (SSSNR) of the first level (chaotic scrambling) is reduced by - 5.195 dB in comparison with time domain scrambling. In the second level (chaotic masking), the SSSNR is reduced by - 20.679 dB. It is also show that when the two levels are combined, the overall reduction obtained is - 21.755 dB.Concerning the immunity against noise, the proposed system offers three methods to reduce the effect of noise. The first method is based on sending each scrambled sample more than once. The simulation results showed that gain of this method is 10 dB if we send each voice sample 8 times over the classical method without repetition. The second method relies on the conversion of information from analog to digital format before doing the masking. The simulation results of this method show that the mean square error (MSE) is reduced and this reduction increases as signal to noise ratio (SNR) increase. For instance when SNR=10 dB, the MSE is reduced from ?10?^( - 1) to 2*?10?^( - 2) while it reduced from ?10?^( - 2) to 3*?10?^( - 6) when SNR=22 dB. The third method is increasing the power of the information signal relative to chaotic signal. The simulation results show that when the power is duplicated and at SNR = 24 dB, the MSE is reduced from 3*?10?^( - 3) to 0.5*?10?^( - 4) and to 3*?10?^( - 5) when the signal power is tripled.

تصنيع وتوصيف متحسس اشعة فوق البنفسجية باستخدام اغشية اوكسيد الخارصين الرقيقة == Fabrication And Characterization Of ZnO Thin Film Based Uv Photodetectors

Author name: الاء كريم حسن
Supervisor name: رعد حمدان ظاهر | غصون محسن علي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical and Electronic Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: في السنوات الاخيرة، كان هناك اهتمام متزايد في اشباه موصلات اوكسيد الخارصين للتطبيقات الضوئية ضمن منطقة الاطوال الموجية الفوق البنفسجية وذلك لكون طاقة اثارة الربط كبيرة (60 meV) وطاقة الفجوة الواسعة (3.37 eV) في درجة حرارة الغرفة. في هذا العمل, ثلاث متحسس | In recent years, there has been increasing interest in Zinc Oxide (ZnO) semiconductors for optoelectronic applications in the Ultraviolet (UV) region due to its large exciton binding energy (60 meV) and wide bandgap energy (3.37 eV). In this work, three devices of Metal Semiconductor Metal (MSM) UV photodetectors (PDs) and photoconductors (PCDs) based on ZnO were fabricated in the form of Interdigitated (IDT) MSM structures. The ZnO thin films were prepared by sol - gel spin coating technique, and deposited on a P - type Si and glass substrates. The Nickel (Ni) and Aluminum (Al) contacts were deposited by a vacuum coating deposition technique. The morphological, structural and electrical properties of the ZnO thin films were estimated by using Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), X - Ray diffraction (XRD), four - point probe and Hall effect measurements. Optical bandgap of ZnO film was evaluated using a double beam spectrophotometer. With applied voltage in the range ( - 5 to 5 V), the photocurrent, contrast ratio, gain, responsivity, detectivity, and Noise Equivalent Power (NEP) were estimated. The Photodetectors were illuminated with UV of 254 nm at room temperature (27 °C) and under different levels of optical power ranging between (163.2 ?w ? 172.3?w). Current Voltage (I - V) characteristics were studied and the values of the saturation current (I - s), ideality factor (n), barrier height (? - B), reach - through voltage (VRT) and flat - band voltage (VFB) were extracted under dark condition. Data analysis and curves were plotted using origin software (graphing and data analysis). The AFM and SEM images clearly demonstrate the formation of well - aligned ZnO, with smooth nanometer granular structure, dense and a good morphology. The grain size and average roughness (rms) values were found to be (59 nm, 12 nm) on Si substrate and (31 nm, 2 nm) on glass substrate, respectively.For Ni/ZnO/Ni MSM PD on Si substrate, the device has VRT of (0.56 V) and VFB of (1.5 V). The responsivity and detectivity were estimated to be (1.334 A/W and 3×1011cmHz 1/2 W - 1), respectively. I - s was found to be (8.3×10 - 7 A), n (4.4) and ? - B (0.67 eV). However for Al/ZnO/Al MSM PCDs on Si and on glass substrates, the responsivity and detectivity were (0.45 A/W and 1.2×1011 cmHz 1/2W1) and (0.94 A/W and 2.9×1011 cmHz 1/2 W - 1), respectively.The I - V measurement results obtained indicate that, the Ni/ZnO/Ni MSM PD on Si substrate behaves as a typical Schottky contact and the dominant current transport mechanism is field thermionic emission. However semi linear behavior for Al/ZnO/Al PCD on Si substrate and the current flowing through the junction was following thermionic emission mechanism, while a symmetric I - V behaviors and an excellent linear relationship between the current and applied voltage are observed in both direction for Al/ZnO/Al MSM PCD on glass substrate. The estimated responsivities, detectivities with fairly low dark currents make the diodes attractive for practical UV detector applications

تحسين اداء هوائي فيفالدي باستخدام المواد ما بعد المادية == Vivaldi Antenna Performance Enhancement Based On Metamaterials

Author name: ادهم ربيع عزيز
Supervisor name: زيد اسعد عبد الحسين | طه احمد عليوي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical and Electronic Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: يتطرق البحث الى المتطلبات الاساسية في الانظمه اللاسلكيه الحديثة والضوابط المتوافقة مع امكانية اعادة التشكيل وقابلية التحديث مما ادى الى ان يصب مجال الدارسة في تحقيق تصميم هوائي يمكن له استيعاب ذلك. في هذه الدراسة، صمم هوائي مطوي على اساس هيكل فيفالدي مع | The urgent demands for a miniaturized, compatible, reconfigurable, updatable, and additive - able wireless communication systems for advanced handle held and portable electronics devices are rarely relaxed due to the inherent antenna limitations. In this study, developing a folded microstrip antenna based on a novel antipodal Vivaldi structure based metamaterial inclusions of single negative properties is proposed for wideband applications. Although, Vivaldi antennas show unlimited bandwidth, an acceptable directivity, small size, light weight and easy to fabricate, but, it suffers from low gain due to traveling surface waves effects and therefore, it cannot be embedded inside the integrated systems ,where, the radiation direction is in the end - fire that limits their use to the outdoor applications. Therefore, a remarkable attention was the first in the literature, is proposed in this thesis by introducing single negative metamaterials to the folded antipodal Vivaldi antenna structure. This work is developed based on a systematic approach which can be divided mainly into four parts : First of all, design a single negative metamaterial structure of a surface area 5×5 mm2 on an FR4 - Epoxy substrate. The unit cell properties are evaluated numerically and analytically, then, compared to the measurement. Second, a systematic approach is applied to design an antipodal Vivaldi antenna based flat profile of a corrugated shape with 50×38 mm2 on the FR4 - Epoxy substrate. Third, the best arrive of the flat geometry is folded on a hello Teflon substrate of an elliptical cross - sectional area. Fourth, the folded antenna structure is surrounded by a U - shaped single negative metamaterial array. The performance of the all proposed antennas are evaluated numerically, then, compared to their measurements in both S11 and radiation patterns. It is found that the antenna bandwidth has affected insignificantly by applying the metamaterial structures. However, with respect to the flat antenna model, the gain is increased generally by 6 dB as well as the radiation pattern is oriented to the broadside. It is worth to mention that the achieved enhancement in the gain is mostly attributed to the folded substrate and the metamaterial introduction. While, the bandwidth enhancement is mostly obtained from the folded antenna structure. The optimum structure shows a first mode around 1.4 GHz and the second one at 2.86 GHz, while, the flat antenna only one mode at 1.5 GHz is appeared.Finally, the HFSS, CST MWS, Matlab and ADS software packages are used in this thesis to study the unit cell performance and the antenna structure. Excellent agreements have been found between the simulated and measured results.

منظومات تضمين العامل المتغير الفوضوي == Chaos Parameter Modulation Schemes

Author name: ابراهيم فهمي علي
Supervisor name: حكمت نجم عبد الله
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical and Electronic Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: في هذه الدراسة, تم تصميم منظومتين من CPM وتم تقييم ادائهما في مختلف قنوات الاتصال. اولا, تم اقتراح تقنية فعالة لتخمين القيمة الابتدائية للاشارة الفوضوية في منظومة تضمين القيمة الابتدائية المسماة M - ary ICM. هذه التقنية سميت ب MACE. هذه التقنية قللت من تع | In this study, two Chaotic Parameter Modulation(CPM) schemes are designed and their performance in different communication channels has been evaluated. Firstly, an efficient technique for initial condition estimation of chaotic signal in M - ary Initial Condition Modulation (ICM) scheme is proposed. This technique has been called Maximum Auto Correlation Estimation (MACE). It reduces the complexity of the demodulator; thereby, it minimizes the hardware implementation cost. Simulation results confirm that, the proposed technique outperforms the conventional technique used in direct sequence spread spectrum quadrature amplitude modulation (DSSS - QAM) system in AWGN channel when high modulation level (M) is used. At BER=10 - 3, 16, 256 ary DSSS - QAM achieve gains in Eb/N0 of about 7dB and 0.8dB in comparison with 16, 256 - ary ICM respectively because the modulation level is low. While 1024, 4096 and 16384 - ary ICM achieve gains in Eb/N0 of about 6dB, 10dB and16.5dB in comparison with 1024, 4096 and 16384 ary DSSS - QAM respectively because the modulation level is high. Furthermore, a modified version of ICM that uses BPSK modulation and one chaotic signals source together with MACE technique is proposed to reduce the implementation cost named as BPSK - ICM scheme. Simulation results confirm that, BPSK - ICM has a comparable BER performance to the DS - SS system in AWGN channel.Secondly, the bifurcation parameter of a chaotic signal has been estimated accurately by utilizing the ergodic properties of a chaotic dynamical signal. In BPSK ergodic chaotic parameter modulation (BPSK - ECPM) scheme, the information signal modulates the bifurcating parameter of the chaotic signal. A mean value estimation technique is used at the receiver to retrieve the original information accurately. This method minimizes the computational complexity of the receiver; thereby, reduces the total implementation cost.Simulation results show that, at BER=10 - 3, BPSK - ECPM scheme achieves gains in Eb/N0 of about 1dB, 1.5dB, 5.2dB, 6.5dB, 9dB, 10 dB and 11 dB, as compared with CSS, CC,FM - DCSK, DCSK,CSK,COOK and QCSK schemes respectively in AWGN channel. While in Rayleigh fading channel, at BER=10 - 3, BPSK - ECPM achieve gains in Eb/N0 of about 4.8dB, 5.8dB, 6.5dB and 11.8dB, as compared with FM - DCSK,CSS,CC and DCSK schemes respectively. Furthermore, BPSK - ECPM scheme outperforms conventional chaotic modulation systems in the presence of synchronization error and high data rate problems. Finally, BPSK - ECPM scheme shows a good recovery performance of image signal in multipath fading channel for intelligent transportation system (ITS).

تطبيق الشبكة العصبية في تكوين الشعاع المتكيف لنظام الهوائي الذكي == Neural Network Application In Adaptive Beamforming For Smart Antenna System

Author name: سليمان احمد غازي
Supervisor name: عضيد حسن سلومي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electrical Engineering
Degree: Master
University: Mustansiriyah University - College Of Engineering - Department Of Electrical Engineering
Language: English
University location: Baghdad
First pages:
Abstract: انظمة الهوائيات الذكية تعمل على تحسين الاداء وزيادة في السعة لانظمة الاتصالات المتنقلة. ويمكن لانظمة الهوائيات الذكية حل مشكلة نظام الاتصالات المتنقلة مثل التدخل في نفس القناة، والتاخير الحاصل نتيجة الانتشار والمسارات المتعددة التي تاخذها الاشارة عن طريق | The smart antenna systems are promise to provide performance improvement and capacity increasing for the base station of mobile communication systems. Smart antenna systems can solve the problem of mobile communication system such as co - channel interference , delay spread and multipath by an advance signal processing technology called beamforming. In this work artificial neural networks (Feed Forward Neural Network (FFNN) and feedback Elman Recurrent Neural Network (ERNN) ) are used for smart antenna adaptive beamforming for one and multiple targets.Neural network is used to calculate the optimum weights of antenna array to adapt the radiation pattern of the antenna array by directing multiple narrow beams toward the desired users and nulling interference or unwanted users. FFNN and ERNN are trained by supervised backpropagation learning algorithms, FFNN was trained by using Levenberg - Marquardt (lm),Resilient Back - Propagation (Rprop), Gradient descent with momentum and adaptive learning rate (gdx), Gradient descent and adaptive learning rate (gda) and biasing regulation(br), while lm and Rprop are used to train ERNN..The simulation results show that the best performance of smart antenna adaptive beamforming for one and multiple targets is obtained when the NN (FFNN and ERNN) trained by lm algorithm as compared with other algorithms, since it consider the fastest supervised training algorithm but with more memory requirement. Where the performance of FFNN training phase based (lm) algorithm for single target for five element uniform linear array antenna is [2.746641e - 14] at epoch 27 with best validation performance and best test performance approximately equal to the best training performance. While The performance of ERNN training phase based lm algorithm for single target is [1.121938e - 14] at epoch 38 with best validation performance equal to [1.682442e - 14] and the best test performance is [3.363946e - 14].The neural network model in adaptive beamforming are compared with smart antenna adaptive beamforming based on Least Mean Square (LMS) algorithm, and gave better performance than LMS.

تطويرات في انتروبي نظرية المعلومات == Developments of Entropy Information Theory

Author name: نور حسن حميد
Supervisor name: صلاح حمزة عبد البديري
General topic: Mathematics
Specific topic: Mathematics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: English
University location: Baghdad
First pages:
Abstract: انتروبي شانون هو عبارة عن مقياس لعدم التاكدية في المتغير العشوائي ويعرف بالشكل H(x)= - E Ln [f(x)] سيكون هو محور الاهتمام في هذه الرسالة.سيتم في هذه الرسالة تقديم ثلاث تطويرات الاول منها يتمثل بتعديل صيغة GW لتحديد عدد الحدود m الداخلة في تقدير دالة الانت | Shannon entropy is a measure of the uncertainty in a random variable, which is defined as H(x)= - E Ln [f(x)], will be under our consideration. In this thesis, we will introduce three developments, the first one is the modification of GW formula to determ

الحلول المشتركة لمعادلات المؤثر == Common Solutions of Operator Equations

Author name: احمد محمد خلف
Supervisor name: جاسم محمد صالح العزاوي | سالم داوود محسن
General topic: Mathematics
Specific topic: Mathematics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: English
University location: Baghdad
First pages:
Abstract: الهدف من هذا العمل هو دراسة وجود الحل لانواع محددة من معادلات المؤثرات الخطية واللاخطية. وكذلك وبعض الخواص لدالة معادلة المؤثر، وعلى النحو التالي : (1) درست ونوقشت الحلول العامة لمعادلات المؤثرات المقيدة الخطية واللاخطية, وبواسطة معكوس بيسيدو للمؤثرات و| The aim of this work is to study the solvability of some specific types of non - linear operator equations and some properties of mapping of operator equations, also present as following : (1) The solvability of general solutions for bounded non - linea

حول المجموعة الضبابية المفتوحة في الفضاءات التبولوجية الضبابية == on Fuzzy ? - Open Set In Fuzzy Topological Spaces

Author name: غزوان حيدر عبد الحسين
Supervisor name: منير عبد الخالق عزيز الخفاجي
General topic: Mathematics
Specific topic: Topology
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: English
University location: Baghdad
First pages:
Abstract: تحقق هذه الرسالة اربعة اهدافالهدف الاول هو دراسة بعض انواع المجاميع الضبابية المفتوحة تدعى (المجموعة الضبابية - ?, المجموعة الضبابية المنتظمة, المجموعة الضبابية - ?, المجموعة الضبابية - ?, المجموعة الضبابية ? ) مع بعض المبرهنات وبعض العلاقات فيما بينها ف | The first objective is to study some types of fuzzy open sets namely (fuzzy ? - open set, fuzzy regular open set, fuzzy ? - open set, fuzzy ? - open set and fuzzy ? - open set) with some theorems on them and some relations between them in fuzzy topologica

دراسة اطياف الامتصاص لبعض الجزيئات اللاعضوية في مناطق اطياف الاشعة فوق البنفسجية والمرئية وتحت الحمراء == Study The Absorption Spectra of Some Inorganic Molecules In UV - VIS - IR Rang of Spectrum

Author name: مريم سمير عبد الستار هاشم
Supervisor name: خالد حسن عبد المعموري
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: The study is dealt with inorganic compound molecules of polyatomic ions belong to different point groups. Through our study we made used the FT - IR to study of the vibrational spectra, and UV - VIS Spectroscopy to study and diagnosis the electronic spec

دراسة الخواص البصرية والتركيبية لاغشية Fe?O? : Al المحضرة بطريقة التحلل الكيميائي الحراري == Study of Optical And Structural Propertes of Fe?O? : Al Thin Films Prepared By Chemical Spray Pyrolysis Method

Author name: لمى لفتة راهي
Supervisor name: خضير عباس مشجل
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: حضرت اغشية اوكسيد الحديديك ( Fe?O? ) غيرالمشوبة والمشوبة بالالمنيوم (Al) باستخدام طريقة التحلل الكيميائي الحراري على قواعد من الزجاج وبتركيز (0.1) مولاري وبدرجة حرارة القاعدة (400?C) وبنسب حجمية مختلفة %(2,4,6,8).تمت دراسة الخواص التركيبية والبصرية، اذ | In this research Iron Oxide and AL doped Iron Oxide thin films were prepared using Chemical spray pyrolysis technique at (0.1 mol) on glass substrate at a temperature of (400?C) with volumetric concentration (2,4,6,8)%.The optical and structural properti

دراسة تاثير تشبع الاقطاب المغناطيسية اللاتقليدية على الخواص الشيئية == Influnce Investigation of The Unconventional Magnetic Polepieces on The Objective Properties

Author name: محمد جمعة حيدر الشمري
Supervisor name: حسن نوري العبيدي
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: في هذا البحث تم اجراء دراسة نظرية - حاسوبية تتضمن جزئين رئيسين. يتناول الاول منهما استخدام انموذج Gauss كدالة هدف في توليف العدسات المغناطيسية ثنائية القطب المتناظرة. افرزت هذه الدالة ثلاث متغيرات امثلية وهي القيمة العظمى لكثافة الفيض المغناطيسي، عرض ال | In this work, a theoretical - computational investingation have been carried out which compramize on two main parts. the first one deals with the using Gauss's model as a target function in synthesize symmetrical double polepieces magnetic lenses. This

تطوير مرشحات رقمية لتحسين الصور الطبية == Adaptive Digital Filters For Medical Images Enhancement

Author name: فلاح عابر بيده البيضاني
Supervisor name: زياد محمد عبود
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: تعد الضوضاء المرافقة للصور الطبية من جملة المشاكلات التي تواجه عملية تشخيص الامراض بواسطة هذه الصور، فضلا عن عدم جودة الصور بسبب الاضاءة والتباين المطلوبين، لانها تجعل عملية تفسير الصور الطبية الناتجة وتحليلها عملية صعبة، وتقلل من الفائدة المرجوة منها، ل | The noise accompanying the images medical among the problems faced by the process of diagnosing diseases by these images, as well as the lack of quality images because of the brightness and contrast wanted, they make the process of interpretation and anal

دراسة نظرية لتحديد افضل قدرة مستحصلة في منظومة القدرة التناضحية المفتوحة == Theoretical Study And Optimization of An Open Cycle Osmotic Power Process

Author name: مضر صباح حميد
Supervisor name: عادل عبيد شريف الحسيني | احمد فرحان عطوان
General topic: Physics
Specific topic: Physics
Degree: Doctorate
University: Mustansiriyah University - Faculty Of Education
Language: English
University location: Baghdad
First pages:
Abstract: A great quantity of renewable energy can be potentially generated when waters of different salinities are mixed together. The harnessing of this energy for conversion into power can be accomplished by means of the Pressure Retarded Osmosis (PRO). This tec

الخصائص الميكانيكية الكهربائية والحرارية لمتراكبات البوليمر - انابيب الكاربون النانوية == Polymer - Carbon Nanotube Composites Mechanical, Electrical And Thermal Properties

Author name: فاطمة احمد خلف
Supervisor name: نجيبة عبد الله حسن الحمداني | طارق سهيل نجم
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: English
University location: Baghdad
First pages:
Abstract: تعتبر البوليمرات ذات الاساس البوليمري من اهم المتراكبات بسبب قابليتها على الاندماج مع عدد من مختلف المواد. تم التركيز في هذه الدراسة على تطوير ودراسة خصائص متراكبات نانوية متكونة من الراتنج epoxy)) المتصلد حراريا كمادة اساس مضاف اليها الانابيب الكاربوني | Polymer matrix composites (PMCs) are one of the most important composites materials due to their ability to incorporate a number of different materials. This study focuses on development and characterization of thermosetting resin epoxy based nanocomposit

تصنيع وتوصيف خلايا شمسية مرنة == Fabrication And Characterization of Flexible Solar Cells

Author name: علي محسن عبد الحسين اللامي
Supervisor name: زينب عبد السلام الرمضان | فلاح ابراهيم العطار
General topic: Physics
Specific topic: Physics
Degree: Doctorate
University: Mustansiriyah University - Faculty Of Education
Language: English
University location: Baghdad
First pages:
Abstract: تعد الانظمة الفوتوفولتائية من مصادر الطاقة النظيفة والتي بدات تاخذ مساحة مهمة من البحث، ان الاغلبية من الخلايا الشمسية تتميز بكونها صلبة ولم يراعى فيها عامل المرونة, لذا توفر الانظمة الفوتوفولتائية المرنة عدة ميزات في مجال سهولة النقل, مقاومة الكسر وخفة | As a source of clean, remote energy, photovoltaic (PV) systems are an important area of research. The majority of solar cells are rigid materials with negligible flexibility. Flexible PV systems possess many advantages, such as being transportable, unbrea

تحضير ودراسة بعض الخصائص الفيزيائية للمتراكب البوليمري النانوي PMMA/ZrO2 == Prepration And Studay Some Physical Properties of Polymeric Nano Compsite (PMMA / ZrO2)

Author name: نور ظايف حايف
Supervisor name: نجيبة عبد الله حسن الحمداني
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: تم في هذا البحث تحضير المتراكبات النانوية للبوليمر المطاوع للحرارة بولي مثيل ميثااكريلايت (PMMA) والمدعم بالجسيمات النانوية اوكسيد الزركونيوم ( ZrO2), وبحجم حبيبي (40 - 50nm) وبكسور وزنية مختلفة) wt%1,1.5,2.5,3,5(0, باستخدام الكلوروفورم كمذيب بطريقة صب ال | In this research, nanocomposites of thermoplastic polymer (Poly Methyl Methacrylate, PMMA) and nanoparticles reinforcement (Zirconium Oxides, ZrO2) have been fabricated with grain size (40 - 50nm) with different weight fraction (0, 1, 1.5, 2.5, 3 and 5 wt

تحضير ودراسة اغشية ZnO : Mn ذات التركيب النانوي بتقنية الترسيب البخاري الكيميائي تحت الضغط الجوي الاعتيادي == Preparation And Study of Nanostructure ZnO : Mn By Atmospheric Pressure Chemical Vapor Deposition Technique

Author name: هبة راشد شاكر
Supervisor name: صلاح قدوري هزاع
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: تم في هذا البحث تصميم وتصنيع منظومة الترسيب البخاري الكيميائي عند الضغط الجوي الاعتيادي ذات الجدار البارد محليا, وتشغيل المنظومة للحصول على افضل غشاء بواسطة تغيير ظروف التشغيل من حيث درجة حرارة القاعدة, زاوية ميلان القاعدة, موقع القاعدة داخل المنظومة, ك | In this research, atmosphere pressure chemical vapor deposition system, with cold wall has been designed and locally manufactured. This system operated to get the best thin film by changing the conditions of performing such as; substrate temperature, slop

دراسة تاثير السمك والتركيز على الخصائص الكهربائية والبصرية لـ بولي مثيل ميثاكريلات المشوب بملح التيتانيوم TiCl3 == Study The Influnce of Concentration And Thickness on Electrical And Optical Properties of PMMA / Ti Cl3 Salt Composite

Author name: فاضل تركي معن
Supervisor name: زينب عبد السلام الرمضان
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: تم في هذا البحث تحضير البوليمر بولي مثيل ميثاكريلات PMMA العازل اللدائني الشفاف بعملية بلمرة الاضافة الحجمية بواسطة الجذور الحرة باضافة البادئ بنزول بيروكسايد الى المونومير MMA.تم قياس اللزوجة باستخدام جهاز قياس اللزوجة عن طريق اخذ تراكيز مختلفة من النمو | In this research, The preparation of poly methyl methacrylate PMMA (the transparent plastic insulator) by polymerization the added volume by free radicals after adding the initator Benzoyl peroxide to the MMA monomer. The viscosity were measured by viscom

دراسة الخصائص البصرية والتركيبية لاغشية cdo الرقيقة المحضرة بطريقة الترسيب بالحمام الكيميائي == Study The Optical And Structural Properties of CdO Thin Films Prepared By Chemical Bath Deposition Method

Author name: كرار مهدي صالح
Supervisor name: فاطمة ياسين محمد
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: حضرت اغشية اوكسيد الكادميوم (CdO) الرقيقة من مادة كلوريد الكادميوم المائية (CdCl2.2H2O) ذات الوزن الجزيئي (201.33g/mol) وبتركيز مولاري (0.1M) على قواعد زجاجية بدرجة حرارة الغرفة(RT) بطريقة الترسيبب بالحمام الكيميائي. وقد تم دراسة تاثير السمك (t=127.35,241 | Thin films of cadmium oxide (CdO) have been prepared from 0.1M Cadmium Chloride dehydrate (CdCl2.2H2O) with molecular weight 128.4g/mol on glass substrates at room temperature (RT) by chemical bath deposition method (CBD). The influence of thickness (t=12

الخواص التركيبية والبصرية لاغشية Fe2O3 - NiO المحضرة بطريقة التحلل الكيميائي الحراري == The Structure & Optical Properties of (Fe2O3 - NiO) Thin Films Prepared By The Chemical Spray Pyrolysis

Author name: نورا جاسم محمد جبر
Supervisor name: نادر فاضل حبوبي
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: Arabic
University location: Baghdad
First pages:
Abstract: حضرت اغشية اوكسيد الحديديك ( Fe2O3 ) واغشية اوكسيد الحديديك الممزوجة باوكسيد النيكل NiO)) من المحاليل المائية لكلوريد الحديد الثلاثي (FeCl?.6H2O) وكلوريد النيكل (NiCl2.6H?O) بنسب مزج (% 10,20,30,40,50) بطريقة التحلل الكيميائي الحراري على قواعد زجاجية بدرج | Ferric Oxide (Fe2O3) and Nickel oxide (NiO) Mixed with Ferric Oxide thin films were prepared from an aqueous solution of [FeCl¬3.6H2O] Nickel chloride [NiCl2.6H?O] in volumetric concentration (10,20,30,40,50%) by chemical spray pyrolysis method onto glass

تصميم مضخة هجينة شمسية - جيوحرارية == Design of Hybrid Solar - Geothermal Heat Pump

Author name: علاء حسين شنيشل السوداني
Supervisor name: احمد فرحان عطوان | نصير كريم قاسم السوداني
General topic: Physics
Specific topic: Physics
Degree: Doctorate
University: Mustansiriyah University - Faculty Of Education
Language: English
University location: Baghdad
First pages:
Abstract: مصادر الطاقة التقليدية مضرة بيئيا على العكس من مصادر الطاقة المتجددة. سعى العالم سوية في نهاية القرن الماضي الى تشخيص مشاكل تغير المناخ الذي ادى بدوره الى التفكير في سبل حفظ الطاقة والتقليل من الانبعاثات. تعتبر طاقة الجيوحراري (Geothermal energy) من الطاق | Conventional energy resources are environmentally harmful unlike renewable energy resources. At the end of the last century the world came together to address the problems of climate change; which led to the thinking of ways to conserve energy and reduce

الخزن الموسمي للطاقة الشمسية الحرارية : دراسة نظرية == Theoretical Study of Seasonal Storage Thermal Solar Energy

Author name: فاضل محمود عليوي
Supervisor name: احمد فرحان عطوان | نصير كريم قاسم السوداني
General topic: Physics
Specific topic: Physics
Degree: Master
University: Mustansiriyah University - Faculty Of Education
Language: English
University location: Baghdad
First pages:
Abstract: يتناول هذا البحث تخزين الطاقة الشمسية الحرارية الفائضة في فصل الصيف ( من ايار الى تشرين الاول) في داخل التربة، للاستخدام لاحقا ( في فصل الشتاء) للحد من استهلاك العالي للطاقة المستخدمة وكذلك لتقليل انبعاث غاز ثاني اوكسيد الكاربون. استخدم نموذج شبه ثلاثي ال | This research deals with storage of the thermal solar energy in the soil in summer season (from May to October) for latter utilization (in winter) for reduce the energy consumption. The quasi - three - dimensional model and finite line source model are us

دراسة تاثير البروبايويك في تكوين الغشاء الحيوي وانتاج البروتيز لبكتريا Pseudomonas aeruginosa المعزولة من اخماج الحروق والجروح == Study The Effect of Probiotic On Biofilm Formation And Production Protease Enzyme By Pseudomonas Aeruginosa Isolated From Contaminated Burns And Wound

Author name: علا عبد الكريم كاظم النعيمي
Supervisor name: منيرة جلوب اسماعيل العبادي | ضيماء محمود ابراهيم
General topic: Biology
Specific topic: Microbiology
Degree: Master
University: Mustansiriyah University - Faculty Of Basic Education - Department Of Biology
Language: Arabic
University location: Baghdad
First pages:
Abstract: he study includes the collection of 70 burns and wound swabs from patients of different hospitals, in Baghdad area, for the period from November 2013 to February 2014. 2) 31 isolates characterized as Pseudomonas aeruginosa 9 (45%) from wound and 22 (78.57%) from burn swabs, depending on the characteristics of the colonies phenotypic and microscopic when grown in differential selective media, as well as biochemical tests todiagnose isolates, Then the identification of these species were confirmed by using the system (GN I Card) using Vitek 2 device complementary step.3) The study includes sensitivity test towards 16 antibiotics for each species by using the system (AST Card) using Vitek 2 device, and the isolates ware Multi drug resistance, As results all isolates were resistant by 100 % for each of Piperacillin, Ticarcillin, Ticarcillinclavoulanic acid, Cefazolin, Ceftriaxone and Tigecycline. All strains were less resistance to Ceftazidime with percentage 50%. 4) All the isolates of Pseudomonas aeruginosa with percentage %100, have ability to produce protease enzyme.5) This study was use tow methods of biofilm formations seen in P. aeruginosa, Micro - titer plate method (MTP) and Tube method (TM), Results revealed that MTP was found to be more sensitiveand specific method for biofilm detection than TM. 6) Well diffusion method revealed the inhibitory effect of bacteria Lactobacillus acidophilus, Lactobacillus rhamnosus GG and its supernatants in the growth of bacteria Staphylococcus aureus and P. aeruginosa, and was the supernatant of L. rhamnosus GG isthe largest inhibitory effect on the growth of S. aureus and P.aeruginosa with inhibition diameter 32 and 34 mm respectively, while the inhibition of growth by supernatant of L. acidophilus diameter 25 and 27 mm respectively. 7) Estimated the amount of protein in each of the biosurfactant and bacteriocine producers of L. rhamnosus GG bacteria concentration of 74, 54 Mg/mL respectively, while their concentration in bacteria L. acidophilus 44, 40 Mg / mL, respectively.8) Found that the bacteriocine product of bacteria L. rhamnosus GG and L. acidophilus GG have inhibitory effect on ability of P. aeruginosa to produce the enzyme protease, and the absence of this effect in the Biosurfactants the product of these two types.9) The biosurfactant product from L. rhamnosus GG showed inhibitory effect greater than the effect of the biosurfactant product from L. acidophilus to inhibition (production of biofilm and adhesion to epithelial cells).10) studied the suspension's effect of L. acidophilus and L. rhamnosus GG in contrived injuries wounds in mice contaminated with P. aeruginosa, Positive results have been shown to be affected by the contaminated bacteria injuries wounds.

دراسة تصنيفية لحشرات عائلة الخنافس الرواغة Staphylinidae : Coleoptera في بعض محافظات العراق

Author name: كاظم عادل هادي
Supervisor name: سعدون ابراهيم اسماعيل
General topic: Biology
Specific topic: Zoology - Insects
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages:

دراسة مقارنة للتاثير السمي للزنبور الاحمر Vespa Orientalis L والزنبور الاصفر Polistes Olivaceaus (De Geer) (Hymenoptera : Vespidae على تحلل كريات الدم الحمراء والتخثر لدى الانسان == Poison Effects of Red Wasp Vespa Orientalis L. And Yellow Wasp Polistes Olivaceaus (De Geer) (Hymenoptera : Vespidae) On The Decomposition of Red Blood Cells And Coagulation In Humans

Author name: شهد فلاح عباس
Supervisor name: سعدون ابراھیم اسماعیل | محمد عبد الرزاق الصوفي
General topic: Biology
Specific topic: Zoology - Insects
Degree: Master
University: Mustansiriyah University - Faculty Of Basic Education - Department Of Biology
Language: Arabic
University location: Baghdad
First pages:
Abstract: To study the impact of toxic of the the Red Wasp Vespa orientalis L. and yellow wasp Polistes olivaceaus (De Geer) from family (Vespidae) the decomposition of red blood cells and clotting in humans. Were collected 508 insect Red wasp was where the number of workes 390 insect the yellow wasp gathered 539 insect where the number of worker 418 insect, and the diagnosis was confirmed based on the taxonomic keys and professors speclalized in the natural history museum and then extracting machine stinging for poisonWasp red and yellow toxin were purified by gel filtration throw Sephacryl S - 200 were obtained on three peaks of proteins, and when estimated the activity of lysis and clotting for peaks separate P1, P2 and P3 for wasp red toxin, the lysis activity of separate P1 was 98% of the poison origin activity and the clotting time was 47.3 minutes, while the lysis activity of separate P2 was 62% of the poison origin activity and the clotting time was 27.53 minutes, and the lysis activity of separate P3 was 29% of the poison origin activity and the clotting time was 13.67 minutes, so P1 separate from Wasp red poison was selected to purification and study the molecular characteristics, while when estimated the activity of lysis and clotting for peaks separate P1, P2 and P3 for wasp yellow toxin, the lysisactivity of separate P2 was 91% of the poison origin activity and the clotting time was 43.8 minutes, while the lysis activity of separate P1 was 49% of the poison origin activity and the clotting time was 19.28 minutes, and the lysis activity of separate P3 was 29% of the poison origin activity and the clotting time was 7.52 minutes, so P2 separate from wasp red poison was selected to purification and study the molecular characteristics The molecular weight of wasp red and yellow toxin the protein cm wasp red toxin P1 was 22387 Da and wasp yellow toxin P2 was 22382 Da using the gel filtration Sephacryl S - 200, while the carbohydrates content were 60.057 and 44.460 mg/ ml for wasp red P1 and yellow P2 toxin respectively as determined by phenol - sulfuric acid method, and type of link between carbohydrates and protein in the separate P1 and P2 investigating by using gel filtration Sephacryl S - 200 and absorbance at 280 and 490 nm.The percentage of iron in wasp red P1 and yellow P2 toxin were 0.88 and 0.44 ppm respectively as determined by atomic absorption, the contain proteins separate P1 and P2 on the iron were investigating by using gel filtration Sephacryl S - 200 and absorbance at 280 and 557 nm. The optimum pH of lysis and clotting activity for wasp red toxin P1 was 6.5, while lysis activity was decrease in pH 4 and 8 to be 38 and 79% respectively from its original activity, and clotting time was decreased from 47.3 min at optimum pH to be 17.9 and 37.3 min at pH 4 and 8, respectively, it was noted that wasp red toxin P1 was constant in the pH range of lysis activity from 6 - 7.5, but it lost 67 and 25% from its original activity at pH 4 and 8 respectively, while the clotting time was constant in the pH range from 6 - 7.5, but it decreased in pH 4 and 8 to be 15.6 and 35.4 minutes respectively The optimum pH of lysis and clotting activity for wasp yellow toxin P2 was 6.5, while lysis activity was decrease in pH 4 and 8 to be 18 and 37% respectively from its original activity, and clotting time was decreased from 48.8 min at optimum pH to be 8.7 and 35.6 min at pH 4 and 8 respectively, it was noted that wasp red toxin P2 was constant in the pH range of lysis activity from 5.5 - 8, but it lost 74 and 19% from its original activity at pH 4 and 8 respectively, while the clotting time was constant in the pH range from 6 - 7.5, but it decreased in pH 4 and 8 to be 12.6 and 39.5 minutes respectively The results for optimum stability temperature of lysis and clotting activity for wasp red toxin P1 refer to increase activity by increasing the action temperature until it reached a maximum at a temperature 35oC, then lysis activity was decreased to be about 4% of its original activity at 80oC, while the clotting time was decrease from 48.8 minutes at the optimum temperature to be 1.8 minutes at 80oC, it was noted that the lysis and clotting activity were stabile at 35oC for 30 min, but it is beginning to decrease with increasing temperature to loses 84% of its original lysis activity at 80oC, and the clotting time was decreased from 47.3 min at 35oCto be 2.3 min at 80oC.The results for optimum stability temperature of lysis and clotting activity for wasp yellow toxin P2 refer to increase activity by increasing the reaction temperature until it reached a maximum at a temperature 35oC, then Lysis activity was decreased to be about 8% of its original activity at 80oC, while the clotting time was decrease from 48.8 minutes at the optimum temperature to be 3.9 minutes at 80oC, it was noted that the lysis and clotting activity were stabile at 35oC for 30 min, but it is beginning todecrease with increasing temperature to loses 98% of its original Lysis activity at 80oC, and the clotting time was decreased from 48.8 min at 35oC to be 5.3 min at 80oC.The results refer to found a relationship between the influence of the wasp type and dose on the red blood cells lysis degree in males and females, it was observed that the concentration had a significant effect (p<0.05) in the red blood cells lysis degree in females, it was 0.401 at concentration 100% for wasp red toxin P1, while it was 0.331 at the same concentrate for wasp yellow toxin P2, the concentration also had a significant effect (p<0.05) in the red blood cells lysis degree in males, it was 1.020 at concentration 100% for wasp red toxin P1, while it 0.842 at the same concentrate for wasp yellow toxin P2, also it refer to found a significant effect (p<0.05) between the effect of the wasp red P1 and yellow P2 toxin and dose on the red blood cells clotting time in females, itwas 46.80 min at concentration 100% for wasp red toxin P1, while it was 46.20 min at the same concentrate for wasp yellow toxin P2, the concentration also had a significant effect (p<0.05) in the red blood cells clotting time in males, it was 47.80 min at concentration 100% for wasp red toxin P1, while it 40.47 min at the same concentrate for wasp yellow toxin P2, there was no significant effects for blood clotting time when making a comparison between the wasp red P1 and yellow P2 toxin for eachconcentration in females and males. The compared between red blood cells clotting time due the wasp red P1 and yellow P2 toxin dose in females and males did not refer to found a significant effect (p<0.05), the clotting time for wasp red P1 was 46.80 and 47.80 min at concentration 100% for females and males respectively, while the clotting time at concentration 6.25% was 17.30 and 17.10 min for females and males respectively, whilst the clotting time red blood cells due wasp yellow P2 toxin in females was 46.20 min and 47.40 min in males at concentration 100%, and it was 17.00 min in females and 17.10 min in males at concentration 6.25%.

دراسة تصنيفية لعويلة الخنافس البرغوثية Alticinaeمن عائلة Chrysomelidae ورتبة غمدية الاجنحة Coleoptera في بعض محافظات العراق == Taxonomic Study On The Flea Beetles (Coleoptera : Chrysomelidae : Alticinae) In Some Provinces of Iraq

Author name: رغد عـبيد خضير
Supervisor name: سعدون ابراهيم اسماعيل
General topic: Biology
Specific topic: Life Science
Degree: Master
University: Mustansiriyah University - Faculty Of Basic Education - Department Of Biology
Language: Arabic
University location: Baghdad
First pages:
Abstract: تناول البحث لهذه الرسالة دراسة تصنيفية لعويلة الخنافس البرغوثية Alticinae في بعض محافظات العراق، علما ان هذه العويلة لم تدرس تصنيفيا في العراق.اختير النموذج Longitarsus ballotae Marsham. لتجسيد صفات العويلة. ولقد درست الاجزاء الرئيسة للجسم وهي الراس والص | The Subject of thesis is a taxonomic study of Subfamily Alticinae in some provinces of Iraq. Knowing that this Subfamily has not been studied taxonomically in Iraq.Was chosen as the model for Longitarsus ballotae Marsham. To embody the gualities of the Subfamily. The detailed study of the head, thorax, abdomen and their appendages was made to evaluate the reliability of the external characters in classifying the species of the Subfamily.There are eight genera and thirteen species for these Subfamily The species are : - Altica deserticola Weise.Aphthona fuentei Reitter.Aphthona sp. Chaetocnema montenegrina Heikertinger.Chaetocnema persica Baly. Epitrix atropae Foudras.Hermaeophaga ruficollis Lucas.Longitarsus ballotae Marsham.Longitarsus membranaceus Foudras.Longitarsus reichei Allard. Longitarsus succineus Foudras.Phyllotreta nemorum Linnaeus.Podagrica fuscicornis Linnaeus.6 Species Register in Iraq are : - Chaetocnema montenegrina Heikertinger.Epitrix atropae Foudras. Longitarsus succineus Foudras.Longitaarsus membranaceus Foudras.Podagrica fuscicornis Linnaeus.Two species Taxonomic keys were designed and developed to is olate the genera of Subfamily Alticinae, sa wellas the genera mentioned and studied in this thesis for each species.

كفاءة التنظيف لمبرد XP - endo Finisher بالمقارنة مع انظمة الارواء بالتردد الصوتي والتردد فوق الصوتي : دراسة خارج الجسم == Cleaning Efficiency of Xp - Endo Finisher File In Comparison With Sonic And Ultrasonic Irrigation Systems (An In Vitro Study)

Author name: مهند غازي عزاوي
Supervisor name: جمال عزيز مهدي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
Abstract: This in vitro study was conducted to evaluate and compare the efficiency of XP - endo Finisher, EndoActivator sonic irrigation system and the NSK Varios ultrasonic irrigation system in removing dentin debris at three levels of root canals and to compare the percentage of dentin debris among the three levels for each irrigation system. Sixty freshly extracted upper molar teeth with straight palatal root canals were used in this study. All canals were prepared with ProTaper NEXT rotary files to size X4, 1mm from the anatomic apex with irrigation of 1 ml 2.0% NaOCl between the files. After that the samples were randomly distributed into three groups of twenty samples each, irrigated with 1 ml 2.0% NaOCl, followed by irrigant activation for 60 seconds with three different irrigation systems; group one, by using the XP - endo Finisher; group two, by sonic irrigation using the EndoActivator system; and group three, by ultrasonic irrigation using the NSK Varios, then all the groups received a final rinse of 5 ml 2.0% NaOCl. After the final rinse, the roots were split longitudinally into two parts and photographed with a professional digital camera. The digital images were then transferred into a computer and opened in Adobe Photoshop CC 2015 software and the canal was magnified 200x. The percentage of dentin debris remaining at the apical level (0 - 3mm), the middle level (3 - 6mm) and the coronal level (6 - 9mm) was calculated by dividing the number of pixels occupied by the dentin debris at each level by the number of pixels representing the entire canal area. Data were analyzed statistically by ANOVA and LSD at 1% and 5% significant levels. This study showed that cleaning the canal with the XP - endo Finisher or NSK Varios ultrasonic irrigation system resulted in significantly cleaner canals (P<0.01) than the EndoActivator sonic activation system at all canal levels. The XP - endo Finisher resulted in cleaner canals than the NSK Varios ultrasonic irrigation system at all levels, but the difference is not statistically significant (P>0.05). The apical level of all the canals showed a greater amount of dentin debris (P<0.01) compared to the middle and coronal levels, regardless of the irrigation device used.

تحليل القوى المستقرة لثلاثة انواع مختلفة من المواد الراتنجية بطريقة عملية وعددية == Static Stress Analysis For Three Different Types of Composite Materials Experimentally And Numerically

Author name: محمد وائل سعيد
Supervisor name: حكمت عبد الرحيم الغراوي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
Abstract: t is important to analyze and compare the stresses induced in different composite material types during load application to know which type of composite will behave as preferred under the loading in the same circumstances. This study aimed at measuring and comparing the stress induced in Filtek ™ Z350 XT (3M ESPE) composite, Tetric EvoCeram ® (ivoclar vivadent) composite and BRILLIANT ™ NG (Coltène/Whaledent) composite experimentally and numerically.Experimental analysis included cavity preparation in the Brass block with a concave (U - shape) cavity which represent a proximal cavity preparation. This cavity was used as a mold for sample preparation. The internal line and point angles of the cavity (mold) were rounded and the dimensions of the cavity (mold) were 10mm × 10mm × 10mm (Total height of the box × Width of the top side of box × Length of the top side of box). The internal diameter of “U” was 5 mm at the base of the box. The mold was used to prepare forty five samples, fifteen samples for each type of composite material. So, three groups were prepared : Group A filled with Filtek ™ Z350 XT composite material, Group B filled with Tetric EvoCeram ® composite material and Group C filled with BRILLIANT ™ NG composite material.Electrical strain gauge (Tokyo Sokki, Japan) was embedded in composite material horizontally at the same level in each sample. Static load of 50 N was applied perpendicular to the center of the occlusal surface of composite restoration in each sample testing. The strain gauge was connected to a Wheatstone bridge with a signal amplifier which measures the strain during load application and gives the amplified signal from (0 to 4.8 volt) to LabJack data acquisition where a stream software give the final values of strain with the aid of a scaled equation of voltage. Then, the von Mises stress (effective stress) was calculated by using equations. Numerical analysis was done by using ANSYS 16.1 - (2015) (finite element tool) software that was used to create the 3 - Dimensional models represented the same materials and dimensions used experimentally. The physical characteristics of the composite models were inserted in the software which included Elastic modulus and Poisson’s ratio (?). Analysis was selected in a finite element method according to boundary conditions. A mesh size and an element size were estimated during the study. The stresses were calculated at static load of 50 N with the ANSYS 16.1 - (2015) software.The data were analyzed statistically by One - way ANOVA test and Least Significant Difference (LSD) test. One - way ANOVA test and LSD test results showed that there was a highly significant difference (P<0.001) presented between groups A and B, groups A and C and between groups B and group C. The Stress induced in BRILLIANT ™ NG composite after load application was the lowest stress value followed by Tetric EvoCeram ® composite and followed by Filtek ™ Z350 XT composite which was the highest stress value experimentally and numerically.

التسرب المايكروي لنوعين من القشرة الخزفية بوجود وعدم وجود الحشوة الراتنجية تحت جهاز التحميل الدوري == Microleakage of Two Porcelain Laminate Veneers Materials With And Without Composite Filling Under Cyclic Loading

Author name: ياسر علي النقيب
Supervisor name: عمار عطا الله علي السعدي
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
Abstract: Although investigators have evaluated the microleakage of porcelain laminate veneers, there is insufficient data regarding the durability of porcelain laminate veneers bonded to existing composite fillings. The aim of this study was to evaluate the microleakage of porcelain veneers restorations fabricated from two types of CAD/CAM ceramic blocks bonded to teeth with or without composite class V composite filling.Forty eight sound, crack - free human maxillary first premolar extracted for orthodontic reasons were selected for this study. Teeth were divided randomly into.2 main groups, which further divded into 2 groups (12 sample each). Group A1 : IPS e.max CAD veneers with standardized class V composite filling, Group A2 : IPS e.max CAD veneers, Group B1 : VITA Suprinity veneers with standardized class V composite filling, Group B2 VITA Suprinity veneers. The class V cavities was restored with nanofilled composite (Filtek™ Z350 XT, 3M ESPE). Standard veneer preparations were made using Ceramic veneer burs system (Keramikveneers. de, Komet). All the veneers were milled by CAD/CAM technology (CEREC MC XL, inLab SW 15, Sirona Dental Systems) Composite fillings (groups A1 and B1) were sandblasted with alumina oxide.Porcelain veneers were cemented in place using light - cured resin cement (Rely Veneer Cement, 3M ESPE), Then the specimens were stored at 37? in distilled water for 2 weeks. Then mechanical load cycling (50,000 load cycle of 49 N at 2.5 Hz) and thermocycling procedure (500 cycles of 5 - 55 Co with 20 sec dwell time) were done. The specimens’ crowns were immersed in 2% methylene blue dye for two days, then mounted in clear acrylic before sectioning with a 0.35 mm microtome. Microleakage percentage were recorded using stereomicroscope and ImageJ program. Results were checked for normality of distribution (Kolmogorov - Smirnov test and Shapiro - Wilk test), and were analyzed with twoway ANOVA and independent samples t - tests. Two way ANOVA shows the significant effect of type of ceramic restoration and the highly significant effect of composite filling, however, the interaction between the main factors was non - significant. The results showed that the lowest mean of microleakage percentage was recorded for group A2 (4.6058% ± 1.5091) which considered statistically significant compared to group B2 (6.105%±1.456), and statistically highly significant compared to group A1 (6.6075%±1.3259) while group B1 recorded the highest mean of microleakage percentage (7.3158%±1.38713). In conclusion, the type of ceramic restoration and the presence of class V filling both had significant effects on microleakage of porcelain veneers. IPS e.max CAD veneers had significantly lower microleakage percentages compared to VITA Suprinity veneers. The presence of class V composite filling within the cervical finishing line of porcelain veneers had a highly significant higher microleakage percentage compared to groups without composite filling.

احتمالية حدوث العيوب في عاج الجذر نتيجة لاستخدام انظمة مختلفة من مبارد النيكل تيتانيوم == The Incidence of dentinal root defects caused by different Nickel Titanium instruments

Author name: نور الدين علي سعيد
Supervisor name: ايمان محمد الزقة
General topic: Dentistry
Specific topic: Dental Treatment
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
Abstract: يعد الاعداد الميكانيكي الاحيائي لقنوات الجذر احد الخطوات الرئيسية لتحقيق حشوة جذر ناجحة بسبب امكانية ازالة الاجسام البكتيرية والحطام المتراكم وتسهيل وضع حشوة الجذر داخل القنوات. الغرض من هذه الدراسة هو لملاحظة ومقارنة احتمالية حدوث العيوب في عاج الجذر نتي | Vertical root fracture and crack formation can be seen in root dentin during and after endodontic procedures. Vertical root fracture is one of the most frustrating complications of root canal treatment, which often results in tooth extraction. The aim of this in vitro study was to compare the effect of different Nickel Titanium instruments (ProTaper Universal, EndoSequence, ProTaper Next and RECIPROC) on the dentinal wall in term of dentinal defects.Seventy - five straight palatal roots of freshly extracted human maxillary first molars teeth were used in this study, the palatal roots were sectioned at 11 mm from the apex and wrapped with two layers of aluminum foil, then placed in the center of elastic silicon mold. Fifteen roots were left unprepared to serve as a negative control group, the remaining 60 roots were divided into 4 groups, each group contained 15 roots : • Group I was prepared by rotary ProTaper Universal system.• Group II was prepared by rotary EndoSequence system.• Group III was prepared by rotary ProTaper Next system.• Group IV was prepared by reciprocating RECIPROC system.All canals were prepared to MAF # 40. After each file size of the (rotary files) or after three pecking motion of the (reciprocating files), the file was removed from the canal and the canal was irrigated with 1 ml of 2% of sodium hypochlorite. All files were cleaned periodically to prevent clogging of flutes during instrumentation. The canal remained patent by insertion size 15 K - file.When the instrumentation was completed, the roots were then embedded in a clear acrylic resin blocks and each root was sectioned into three levels : apical, middle and coronal. All samples were examined from coronal direction under Stereomicroscope. The number and the type of dentinal defects were recorded and classified. The collected data was tabulated and subjected to statistical analysis using chi - square test.The EndoSequence group showed the lowest number of dentinal defects followed by ProTaper Next group and then ProTaper Universal group. The highest number of dentinal defects were observed in RECIPROC group. Chi - square test showed that there were highly significant differences among groups (P < 0.01). The results showed a non - significant difference between EndoSequence and Protaper Next group (p > 0.05), and a significant difference with ProTaper Universal group (P < 0.05) and a highly significant difference with RECIPROC group (P < 0.01). The ProTaper Next group showed a significant difference with ProTaper Universal group and a highly significant difference with RECIPROC groups. There was no significant difference between RECIPROC and ProTaper Universal groups.

انسلاخ المبيضات اللعابي المقاس بواسطة تفاعل البوليميراز المتسلسل الكمي اللحظي كاداة تنبؤ لحصول التهاب المبيضات الفموي عند مرضى الربو المتعاطين لدواء بيكلوميتازون المستنشق == Salivary Candidal Shed Measured By Real Time Quantitative Polymerase Chain Reaction As A Predictor of Oral Candidiasis In Asthmatic Patients On Inhaled Beclomethasone Dp Therapy

Author name: نغم قطران رحيم
Supervisor name: رعد محي الدين حلمي
General topic: Dentistry
Specific topic: Oral and Maxillofacial Surgery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
Abstract: الربو القصبي المزمن يمثل مشكله صحيه جديه في كل العالم وهو عادة يبدا في عمر الطفوله ويبقى المريض في كثير من الاحيان يتعاطى العلاجات المستنشقه مدى الحياة.انتشار الربو القصبي يزداد في كثير من دول العالم مما يجعله احد الامراض المعيقه والمهدده للحياة باعتبا | Asthma is a serious global health problem that usually starts in childhood and continues along patient’s life and most of them have to take inhaled therapy lifelong. The prevalence of asthma is rising in many countries of the world, making asthma one of the most disabling and life threatening diseases effecting patients with different age groups and social classes with variable clinical spectrums and outcomes starting from mild to severe disabling syndrome rendering nonproductive individuals to severe life threatening and sometimes fatal disease. Those patients continue inhaled steroid therapy for long duration, considered by GINA as first line treatment , however such a treatment is associated with local adverse effects on oral tissues, and one of the main concerns is the development of oral candidiasis, a chronic, potentially invasive, infection of oral tissues with fungus candida species resulting in failure of treatment. The scientific interests about such a serious complication have been raised over the past years and debates continued as the candida is considered one of the normal flora of the oral cavity in most of healthy population, however oral candidiasis in pathogenic forms still occur in immunocompromised patients including asthmatics on inhaled corticosteroid therapy.Aim of the study1. To investigate the effect of inhaled corticosteroid therapy in form of Beclomethasone Dipropionate250 microgram/dose CFC free in asthmatic patients on salivary candidal shed estimating by Real Time quantitative Polymerase Chain Reaction (RT qPCR) applied on direct unstimulated saliva samples.2. Evaluation of this shed as prediction of occurrence of oral candidiasis. Patients, Materials and MethodsThis study was conducted at Al Zahraa consultational Asthma and Allergy center - Baghdad Al Karkh Health Directorate from September 2013 to February 2014.The included patients were divided into 3 groups. Group A included asthmatic patients on inhaled Beclomethasone therapy, group B included asthmatic patients that never used any form of inhaled steroid therapy and group C was those asthmatic patients on inhaled Beclomethasone therapy who developed oral candidiasis. All patients were receiving two daily doses. The same exclusion forma was applied to choose Group D who were control healthy individuals. Each included patients and control cases were instructed to give saliva samples in the standard way and samples taken for estimation of candidal count by real time quantitative Polymerase Chain Reaction.Results During the study period, 698 patients were examined, however only 63 patients were included in the study. Those 63 were classified as follows : 28 patients were found on group, 28 were found on group B and only 7 patients were found on group C and 20 cases were selected in group D as a control.Group C patients were having the highest salivary candidal shed (mean=58.7x106 cn/ml) and longest duration of asthma (Mean=2718 days) and longest duration of Beclomethasone therapy (Mean=2224 days) and this was significantly higher than other groups (p<0.05).Group A patients were having the second highest rank after group C in regard of salivary candidal shed and both duration of asthma and Beclomethasone therapy. Inside each group, duration of asthma and duration of Beclomethasone therapy were associated with moderate positive correlation with salivary candidal shed (R>0.5).Age difference between groups were insignificant and age factor had no correlation with salivary candidal shed inside the groups.Discussion : Salivary candidal shed over the groups was directly related to the duration of inhaled Beclomethasone therapy and duration of asthma. They are significantly higher (p<0.01) as we go further from each group to the next, both appear as the reason behind increased candidal shed in groups A and C.The salivary candidal shed curve will gave us a very useful tool for follow up those patients on inhaled steroid therapy ,In addition , predict the risk of developing oral candidiasis and when to interfere prior to the establishment of Oral Candidiasis state as that we have noticed in the group C, in which it was recommended to stop inhaled steroid therapy and the patients would lose the benefits of the therapy.Conclusions1. Resting saliva samples with realtime quantitative PCR was a rapid and accurate tool in diagnosis of oral candidiasis.2. Salivary Candidal Shed could be used as a tool in predicting oral candidiasis in asthmatic patients on inhaled Beclomethasone therapy.3.Longer duration of asthma and longer duration of Beclomethasone therapy were associated with increased salivary candidal shed and established oral candidiasis have the highest amount of shed.4. Candida albicans are present in the oral cavity of any individual of our population

تقيم التسريب الجزني لمركبات الراتنج للحشوات الخلفية سونك فل مركب مستند على السيلورين ومركب نانوفل مستند على الميتاكرليت في : دراسة مقارنة == Microleakage Evaluation of Sonicfill

Author name: مهند احمد الحداد
Supervisor name: حكمت عبد الرحيم الغراوي
General topic: Dentistry
Specific topic: Oral and Maxillofacial Surgery
Degree: Master
University: Mustansiriyah University
Language: English
University location: Baghdad
First pages:
Abstract: Resin composites have improved greatly since their introduction and are now the materials of choice for most of the restorations. This study was conducted with aim of comparing in vitro the marginal adaptation of three different, low shrink, direct posterior composites Sonic fill™ (nanohybrid composite), Filtek™ P90 (Silorane - based composite) and Filtek™ Z350 (nanofill composite) of a standardized Class V cavity after thermoal cycling. Sixty sound, freshly extracted human premolars were prepared with standardized Class V cavities. The specimens were divided into three groups of twenty teeth each according to the material used : Group A : The teeth were restored with Sonic fill™ posterior composite unidose capsules, Group B : The teeth were restored with a silorane - based posterior composite (FiltekTM P90), Group C : The teeth were restored with nanofill methacrylate - based composite (Filtek™ Z350 XT).After specimens were stored in distilled water at 37°C for 7 days, all specimens were subjected to thermocycling at (5° to 55 °C), then immersed in 2% methylene blue dye for 24 hours. For each group microleakage at the occlusal and gingival regions was estimated by determining dye penetration using scoring system under steromicroscope (10X). The statistical analysis of the results showed that, Filtek™ P90 silorane based composite exhibited the lowest mean of microleakage, with statistically highly significant difference (P < 0.01) when compared with Sonicfill™ composite and Filtek™ Z350 XT nanofill composite. On the other hand, the results of this study showed that Sonic fill™ composite exhibited no significant difference (P > 0.05) as compared with Filtek™ Z350 XT nanofill composite. Also, the results in this study showed that there is a highly significant difference (P < 0.01) in dye penetration between occlusal and gingival regions for each group
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