Show: 25 50 75 100 Results

Search results: 25 out of 5,447

تحليل الموجة الصغيرة Wavelet لتقدير منحنى الانحدار اللا معلمي == Wavelet Analysis For Estimating Nonparametric Regression Curve

Author name: محمد حبيب كاظم الشاروط
Supervisor name: ظافر حسين رشيد النجار | نوري فرحان المياحي
Specific topic: Statistics
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: لقد توسعت امكانيات طرائق تقدير الدوال اللامعلمية توسعا هائلا في السنوات الاخيرة من خلال المساحة الواسعة من الادوات الحديثة في التحليل الاحصائي، وقد لوحظ تقدم كبير وملموس في مجال البحوث النظرية والتطبيقية للموجة الصغيرة في الاحصاء مثل بحوث الموجة الصغير

اليات تسعير نوعيات النفط العراقي وانعكاساتها على التصدير == The Mechanisms of Pricing Iraqi Crude Oil And It'S Reflect On The Trends of Export

Author name: محمد حازم عباس
Supervisor name: رحيم حسوني زيارة
Specific topic: Economy
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: يعد النفط العراقي اهم مصدر لتمويل قطاعات الاقتصاد الوطني ,حيث تشكل ايراداته 95% من الموازنة العامة للدولة , ومن ثم يرتبط تطور بقية قطاعات الاقتصاد بتطور قطاع النفط. ان لعملية تسعيرالنفط الخام اهمية كبيرة للدول المنتجة والمستهلكة على على حد سواء ,بما يؤدي | Oil is considered the most important source for providing the funds for the national economic sectors. The revenues of oil constitute %95 of the GPD. Therefore, the development of the remaining sectors depend on oil. The process of pricing crude oil has great importance for the producing and concusimg states alike because it provides for the productrive states with the needed finance. The Iraqi Oil Marketing Organization (SOMO) depended on the a unified price for all the buyers, because of taking West Texas Index (WTI) as a reference in pricing oil going to the United States. That may not reflect the real value of market and did not contribute in marketing the type of heavy oil. Then, to what extent had SOMO been able to market the light and heavy crude oil in a way that contains the expected increase in the crude oil production

تصميم نظام محاسبة التكاليف الالكتروني لشركة الخطوط الجوية العراقية == Design Electronic Cost Accounting System For Iraqi Airways

Author name: محمد تحسين علي مهدي
Supervisor name: حنان صحبت عبد الله
Specific topic: Accounting
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: استند هذا البحث الى مشكلة حقيقية وواقعية المتمثلة بعدم وجود نظام محاسبة تكاليف في شركة الخطوط الجوية العراقية وبالتالي تكون عملية تسعير الخدمات المتنوعة التي تقدمها الشركة عينة البحث من النقل الجوي والشحن الجوي ووقود الطائرات وخدمات تموين الطائرات ليست | the research Was based to a real and realistically problem of that there are no cost accounting system in Iraqi Airways and therefore be varied services provided by the company's pricing process research sample of air transport and air cargo and aviation fuel and aircraft catering services are not properly especially in the light of new data new companies from entering the competition in the Iraqi aviation industry and therefore does not provide price flexibility in order to compete to get market share, And then research solution this problem through design cost accounting system that covers all the costs incurred by the company in order to provide the design services and also has been the development of this system to an electronic system in order to meet the management requirements of reports and information costs quickly and more accurately in order to help them to make to various resolutions In order for the vast amount of financial data compared to accommodate the rest of the Iraqi companies to the fact that the company's research sample Winning the only company considered to the Iraqi transport ministry , A researcher has found to a lot of conclusions, most notably is there is a clear failure by the company to attend the dates of travel caused by a weakness in the rules of procedure of the company and the lack of proper follow - up to a number of flying hours per aircraft and for each line or airline sector process and therefore lead to a non comparisons between more than a plane to see the differences in hours as well as the lack of company's ability to estimate the cost of air transport service scientifically sound, practical, and thus also affect the travel tickets that are unrealistic pricing process, as well as also the case in the rest of the services offered by the company.

العلاقة بين مقدرات الابداع الاستراتيجي وسلوكيات القيادة التحويلية واثرهما في الميزة التنافسية المستدامة : دراسة تحليلية لاراء عينة من التدريسيين في الكليات الاهلية ببغداد == The Relation Between Strategic Innovation Capabilities And T He Behaviors of The Transformational Leadership And Their Impact On The Competitive Sustainable Advantage.

Author name: محمد اصبع بكال المسعودي
Supervisor name: عبد الرحمن الملا
Specific topic: Business Administration
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: تجتذب مشكلة الدراسة النظرية في حداثة وندرة الدراسات التي تناولت توليفة المتغيرات المتمثلة بالميزة التنافسية المستدامة والية تحقيقها من خلال التركيز على تحفيز مقدرات الابداع وسبل اكتنازها في سلوكيات القادة التحويليين. في حين ارتكز الاطار العملي للمشكلة ثان | The theoretical research problem is characterisel in rarity and novelty of studies which tackled a mixture of variable represented in the sustainable competitive advantage and the mechanism of achieving it through of cussing o.u stimulating immovation,abilities and means of encompassing it in the behaviours of the transit and leaders. while the practical frame.Of the problems centered on the necessities to correct the conception of the sustainable competitive advantage and understand its effects as a result of the congruity among these innovated abilities and makes them as apocedure in the transitional leaders behaviors represented in the sample of research which gathers (56)numbers of the faculty staff in seven private colleges in Baghdad.The importance of this research cause from the value of scientific outcome of the teaching staff and the concentration of teaching value on the innovated character which this sector needs and to continue the flow of the advantage extracted from the congruity of innovative abilities with the characteristics of the transitional leadership to ensure the achievement of sustainability in the competitive advantage as one of the challenges which the private college face with regards to the public colleges in these environment circumstance.The research is based on tow main zero hypothesis : The first doesn't confess any relation between strategic innovated abilities and the transitional leaders bahaviour white the second assumed the testing of the effective relation of the variable perse on the sustainable competitive advantage.Them equestianrre was developed in the form of(100) question divided by(4) axis. The research used a group of statistic tools such as connection factor (kindal),the effectiveness and degree of importance.The research reached a set of conclusions : One of them is a theory which affirms the innovative strategic role and its abilities in maximizing the benefit achieved from the transitional leadership behaviours and and its effect in achieving the significance of the organization visa vis the other organization. the practical conclusions denied the tow main hypotheses and proved the existence of joint relation between strategic innovated abilities and transitional leadership behaviour as well as the existence of effective relation of or both variable in achieving sustainability in competitive advantage.The research ended by providing recommendative such as the necessity of using teaching sector especially in the private colleges the programmers of the organized learning based on collective or team work and the sample colleges should adopt the philosophy of spreading and creating innovative abilities among the behaviour of transition leadership headed for achieving the competitive sustainable advantage,

تقويم الاجراءات التدقيقية لمراقبي الحسابات للحد من ظاهرة غسيل الاموال في المصارف التجارية العراقية == Evaluation Audit Procedures For Auditors To Reduce The Phenomenon of Money Laundering In The Iraqi Commercial Banks

Author name: محسن فؤاد محسن
Supervisor name: علي حسين علي الدوغجي
Specific topic: Accounting
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: نالت ظاهرة غسيل الاموال اهتماما واسعا من مختلف المنظمات الدولية منذ عقود عديدة، لما احدثته هذه الظاهرة من تاثيرات سلبية على الاقتصاد العالمي، نتيجة لتطور وتعدد عملياتها واساليبها في تحويل الاموال غير المشروعة الى اموال تبدو وكانها اموال مشروعة. ان ا | The phenomenon of money laundering gained wide attention from various international organizations since many decades, what caused thisphenomenon of a negative impact on the global economy, as a result ofthe evolution of the multiplicity of operations and methods in the illegal transfer of funds to the funds looks like legitimate funds.The attention of the audit profession like all other sciences to the phenomenon of money laundering stems from the fact that this profession provides reasonable assurance to users of the financial statements are free of manipulation and fraud, such as money laundering operations.The research aims to clarify the theoretical framework of the phenomenon of money laundering defined and stages, methods and clarify the concept of audit and responsibilities of the auditor and the role of quality audit in an interview responsibilities of the auditor as well as an explanation of the criteria for international scrutiny of the relevant theme of money laundering and research aims also to evaluate procedures audit of the auditors in Iraqi commercial banks to reduce money laundering operations, with the suggestion of an audit program to reduce the phenomenon of money laundering in the Iraqi commercial banks.The researcher reached a number of conclusions and recommendations as a contribution in developing the procedures audit to reduce the phenomenon of money laundering in Iraq, whose conclusions search in the activation of the important role of auditors in the form that they can enhance the confidence of users of financial statements to their work, as the researcher recommended relying on international auditing standardsand international efforts to combat money laundering operations when they performed an audit, and find ways that will enable them with the other parties in the fight against money laundering and to get rid of their negative effects on the environment of Iraq

تاثير سلوكيات القيادة الاخلاقية في ممارسات القوة في ضوء نظرية اصحاب المصالح : دراسة ميدانية تشخيصية تحليلية في عدد من كليات جامعة بغداد == The Influence of Ethical Leadership Behaviors In Power Practices In Light of Theory of Stakeholder Descriptive And Annalistic Field Study In Number of University of Baghdad Colleges

Author name: محسن رشيد مصيحب العتابي
Supervisor name: علي حسون فندي الطائي
Specific topic: General Administration
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: اهتم هذا البحث بتناول ثلاث متغيرات ( سلوك القيادة الاخلاقية, ممارسات القوة , نظرية اصحاب المصالح) وكان الهدف من البحث تحليل المتغيرات المعروضة وتوضيح العلاقة بين كل متغير من المتغيرات والابعاد المرتبطة بكل متغير وقد اختبر البحث في جامعة بغداد باخذ (8) كلي | This research is concerned with three pillars : moral leadership behavior, power practices, and the theory of stakeholders. The purpose of this research is to analyze the variables and disclose the relationship among each variable and their dimensions. The research included eight colleges in University of Baghdad. It uses 350 survey forms 271 of them were appropriately answered by the university personnel and staff. The researcher chose the survey method because it provides a practical method of information and data gathering. The survey has been designed based on a set of international standards. The survey compasses of 64 items. The first variable, which includes four dimensions has 20 items, the second variable includes 25items, while the third encompasses 19 items. A number of hypothesizes were chosen relating to correlation and influence relations.The researcher employed statistical methods such as the statistical mean, regression, percentages, Spearman correlation, and basic correlation. The researcher finds that the moral leadership behavior helps supporting discipline power practices with followers, particularly those followers represents the interest in the eight studied colleges. In addition, the three variables are influencing each other due to the positive influence of moral leadership. They have shown different negative behavior when the moral leadership was not applied. The results were positive in term of respecting the work ethic and implementing the previously adopted policy by the organization, to motivate the followers to adopt and respect this policy. Yet, in fact, the followers are constantly complaining from the type of relationships and the absence of mutual respect in their work environment. This has been true to the college where I am working with the academic staff. One of the reasons why the mutual respect indicator shows high positive answers is that, employees are afraid that their deans or heads can punish them if they expressed true feelings in the surveys. Whereas, managers think that, they have nointerest in disclosing the truths in their organizations. Mangers can use the legal power of their positions to suppress the followers in such a way the followers feel powerless in front of any decision made by the managers. This might be the main reason to which the surveys’ results show high positive answers compared to the negative answers that may have discover true reflection of power practices.

اثر ابعاد سلوكيات المواطنة التنظيمية في استراتيجيات تمكين فرق العمل : دراسة استطلاعية تحليلية في عينة من مدينة الطب == Fite Between The Organizational Citizenship Behavior And Teams Empowerment Strateiges Apoll Study In Medicine City Organization

Author name: مجيد حميد عبد الله الزوبعي
Supervisor name: غني دحام تناي الزبيدي
Specific topic: Business Administration
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: لقد تناولت هذه الدراسة اثر ابعاد سلوكيات المواطنة التنظيمية بابعادها الفرعية(المثابرة الشخصية، والمباداة الفردية، وتعزيز الولاء او الاخلاص، والمساعدة ما بين الافراد) كمتغير تفسيري، وكذلك استراتيجيات تمكين فرق العمل بابعادها الفرعية (المقدرة، ومدلولية الهد

كفاية الاداء الاداري واثره في كفاية نظام الرقابة الداخلية : دراسة تطبيقية في عينة من الوحدات الاقتصادية الحكومية الانتاجية والخدمية == Managerial Performance Efficiency And Their Effect For Internal Control System Efficiency Afield Study For A Sample of Productivity And Services Government Economical Units

Author name: مجبل دواي اسماعيل الساعدي
Supervisor name: ماهر موسى العبيدي
Specific topic: Accounting
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: This study aimed to shed light on managerial Performance efficiency and their effect for internal control system efficiency. It is achieved for a sample of general managers and assistant of general managers and managers of audit, accounts, Planning and human resources management and auditors and accountants in productivity and services government economical units and it has been based on a basic hypothesis , that (the change in the level of managerial performance efficiency in providing internal control components will cause the change in the level of internal control efficiency). The researcher used the descriptive method in the theoretical part, and the statistical analysis in the practical part and for this purpose a testified questionnaire was developed. The study point out many conclusions the most importance interest weakness of the higher management in providing internal control components particularly in control environment - risk assessment and monitoring in research simple units, and all the correctional relation ships between internal control components and objectives of internal control are positive and significant. The study concluded with number of recommendations and suggesting including important necessity of higher management in provide of internal control components at appropriate level of efficiency and support that in provide relevant environment for the internal control, in additional to clear understanding to the important of internal control from higher management.

تاثير حاضنات الاعمال في تحقيق متطلبات ريادية المشاريع الصغيرة والمتوسطة : بحث تطبيقي == The Effect of Business Incubator In Achievement The Requirement of Small And Medium - Sized Enterprises Entrepreneurship : Applied Research

Author name: مثنى زاحم فيصل العجيلي
Supervisor name: سعد علي حمود عباس العنزي
Specific topic: Business Administration
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: تناول هذا البحث تاثير حاضنات الاعمال بابعاده الرئيسة(تبني المشاريع الجديدة، ونمو واستدامة الاحتضان، التقنيات المستخدمة، والتاثير المجتمعي، وخدمات الحاضنة، وقياس المؤشرات المالية) في ريادية المشاريع (الابداع، والاستقلالية، والاستباقية، وتبني المخاطرة، | This study has dealt with the effect of business incubators with its main dimensions ( the adoption of new projects , the growth and sustainability of incubators , used techniques , Societal effect , incubator services , Financial incubators measures ) and the projects entrepreneurship (creativity , independency , Forestallmentality , risk adaptation , offensive competition , and the Financial assessment ) and the entrepreneurship Requirements by (inhancing the experiments and expertises , and the satisfaction of the society needs , diversity of production and introducing new services , increasing the competition abilities , capturing environmental opportunities and making use of them , and building social relationship with various institutions ). The study has launched From an intellectual dilemmaBegan this research from dilemma of thought due to the escalating interest in SMEs recently because of privacy and its importance and the multiplicity of parties interested in them so that has played an important process of economic advancement of countries by providing services and wide use of all sectors and run a variety of manpower as well as its conversion to find new products because of the brittleness of the projects against the strong competition of the other projects as a result of the territorial and international developments which causes the concern in growing the services which support the activity of this projects. and the criterion of capital deems more precise in defining the concept of small and medium projects than the number of employees (Workess). The small and medium projects are distinguished by their highs average of failure especially in the first years of running because of the shortage in the managerial skills and the weakness of their Financial Resources and laces the marketing problems , which prevent getting the information , consultations , researches training seuices , and the increasing consciousness for the importance of these projects in the economical development and the difficulties that work in their shadow , all of them uased the creation of new michanisms to support these growing projects.The aim of this stydy is to deepen the understanding of business incubators and its different dimensions and the requirements of entrepreneurship to the projects , to gain a scientific framework that gather the most dimensions and concepts , and the attempt to test the Iraqi environment ti incubate these modern concepts. The methodology of the study was qualificative and analytical. and the study determined a set of hypotheses which have been tested by statistical such as the mean , standard deviation correlation coefficient , regression analysis , and path analysis. A random sample of (43) managers in the Ministry of planning and Ministry of laber and Social Affair was tested to explore their opinions Regarding the drives of supporting and developing the small and medium projects and the objective behind establishing and taking care of the incubators of these projects and what kind of the assistance can be presented to the owners of the projects, and what are the most prominent available standards within their ministries to achive the entrepreneurship Requirements of the small and medium projects and discovering the problems and Findling the solutions for them through depending upon the suggestions presented by the managers to the owners of the projects to help them in raising them and keep them on the track. A random sample of (43) owners of small and medium projects , who were supported and lended by the two Ministries , was also tested to explore their openions about the factors and the elements which played on effective role to develop their projects , and how he got the idea about forming the project and what was the future goal for establishing such project. An to know whether the Support of the two Ministries was distinguished or not , and then discovering the causes behind the weakness of the support , and what are the resources that helped the owners of the projects to establish them , and then knowing the problems and find the solutions for them through depending upon the suggestions presented by the owners to helped them in raising them and keep them on the track. The study reached a set of conclusions which was the most important of them is the gross of business incubators participated in the influence of entrepreneurship Requirements in the two Ministries under study across different entrepreneurship projects under study and the strongest impact for business incubators represented by creation , and the study presented a set of recommendations which can beuseful for all the Iraqi ministries and institutions which were in front of them the ministry of planning and the ministry of labor and Social Affairs.

تقويم تدريب مدراء المدارس الابتدائية في تربية بغداد الكرخ الثانية لرفع المستوى التربوي للطلبة

Author name: مثنى ابراهيم عبد الامير
Supervisor name: غني دحام تناي الزبيدي
Specific topic: Strategic Planning
Degree: Higher Diploma
Language: Arabic
University location: Baghdad
First pages:
Abstract: برزت مشكلة البحث في ضعف واقع التدريب وعلى نحو خاص لمدراء المدارس اذ لا تتناسب البرامج التدريبية مع الحاجات الفعلية لمدراء المدارس. ويهدف البحث الى تشخيص واقع تدريب مدراء المدارس الابتدائية وايجاد نقاط الضعف فيها بغية معالجتها. وقد اقتصر البحث على مدر | particular to the principals as training programs do not fit with the actual needs of school principals The research aims to diagnose the reality of Training of primary school principals and find weaknesses in order to address them The limited research on principals of primary schools who are enrolled in training courses , either collect information for research has been based researcher into two main sources , one of them is the studies and previous research either other source shall be of field research and survey to obtain information on training courses for managers of primary schools , through resolution that directed to the trainees of elementary school principals were then analyzed answers to the questionnaire sample to identify the calendar training managers elementary schools Showed results that there is a high rate and high in a paragraph that the plan of the training program are subject to the implementation and application , as well as to acquire trainers high capability of delivering information to trainees and explain the objectives of the training program as well as the results also showed that there is a weak rate in the appropriateness of the training programs of human and material potential of the school and also a small percentage to contain the training program on the part of my job The researcher reached a number of conclusions of the most prominent of which is that the training of elementary school principals in raising the educational level of students is positive in applying the principles of training and commitment to the rules of the training courses And make recommendations It is most important to focus on the process of identifying training needs in terms of the style used in the identification of needs according to business needs and priority and based on scientific standards and commensurate with the skills and abilities required. And to make appropriate proposals to improve the training of school principals

التقدير المتسق لمعلمة ميل انموذج الانحدار الخطي البسيط المتاثر بخطا القياس للمتغير التوضيحي مع تطبيق في المجال الصحي

Author name: ماهر محسن سلمان
Supervisor name: دجلة ابراهيم مهدي العزاوي
Specific topic: Statistics
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: تعد طريقة المربعات الصغرى الاعتيادية (OLS) من افضل طرائق تقدير معلمات انموذج الانحدار الخطي وان هذه الطريقة تتصف مقدراتها بصفتي عدم التحيز والاتساق وهذه من صفات المقدر الجيد , الا ان مقدر طريقة المربعات الصغرى يصبح متحيز وغير متسق اذا كان المتغير ال | Ordinary Lease Square (OLS) is the way of the best methods of Parameter estimating of Linear Regression Model , that’s where this method is characterized by unbiased and consistency , and these qualities of good estimator , but (OLS) estimator becomes biased and inconsistent if Explanatory variable contains measurement errors , and the study has been of two consistent estimators, were taking into consideration the presence of measurement errors and they are : reliability ratio method and this way corrects the biasing in (OLS) estimator and makes the estimator consistent , and the other way is : instrumental variable method ; and this way gives consistent estimator and contributes to support the explanatory variable through the addition of an external variable T ,and the instrumental variable must be correlate in a strong relationship with explanatory variable ,also has been showed the additional information's necessary to the alternative estimator to the (OLS). above methods have been applied by using of simulation style of the software MatLab as measurement of errors takes three distributions and they are : normal distribution , standard normal distribution and Uniform distribution by using three sizes of samples (100 , 50 , 20 ) the result showed that reliability ratio estimator method is the best estimator ; regardless of the size of the sample and the distribution of the errors measurement , and this finding corresponds to the findings of researchers , and on this basis has been applied Reliability ratio estimator method on the medical data obtained from patients have fallen asleep in the department of artificial kidney in (Yarmouk) hospital in Baghdad. that's where the level of Urea in the blood is dependent variable , two readings of blood pressure were taking for each patient ,which represent the average is instrumental variable , the purpose of taking blood pressure for each patient in order to estimate the variance of measurement errors ,also has been taken third blood pressure reading by using dialysis machine to represent instrumental variable , has been reached that the ratio of reliability for blood pressure measuring ranging between ( 0.80 - 0.85 (

علاقـة الاستثمار في قطاع التعليـم بالتنمية الاقتصادية لبلـدان عربيـة مختارة للمدة (1985 - 2001)

Author name: ماهر عزيز عبد الرحمن الحبيب
Supervisor name: هناء عبد الحسين محيميد الطائي
Specific topic: Economy
Degree: Master
Language: Arabic
University location: Baghdad
First pages:

انعكاس نظام تقويم اداء القيادات العليا والوسطى على جودة العمل المؤسسي بحث ميداني في مركز وزارة الزراعة == Reflection of Evaluating The Performance of Senior And Middle Leadership On Institutional System Quality : Field Research In The Ministry of Agriculture

Author name: مازن محمود مثنى
Supervisor name: عبد الناصر علك حافظ
Specific topic: Performance Evaluation
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: يهدف هذه البحث الى تحديد دور نظام تقويم اداء القيادات العليا والوسطى في تحديد مستوى جودة العمل المؤسسي في وزارة الزراعة، من خلال دور تقويم اداء القيادات العليا وتاثيرة في جودة العمل المؤسسي، فقد لمس الباحث حاجة الوزارة الى استنباط الطرائق التي توظف مخرج | This Research aims to define role of the system of evaluating the performance for higher leadership in determining the level of institutional work quality in the Ministry of Agriculture, by measuring system efficiency of evaluating the performance for higher leadership and its effect in institutional work quality, the searcher touched the ministry’s need to derive methods to exploitation outputs of efficiency of evaluating the performance for higher leadership in the studied ministry in order of developing techniques of institutional work quality levels, for standing on the role of system of evaluating leaderships performance, we asked the following question : “What is the role of system of evaluating leadership performance in institutional work?” In order to achieving the aim of research, and to answer the issue questions the searcher reached through the theoretical framing and involved studies to build default plan define the relation between research variables formed from system of evaluating leadership performance as independent variable contains six subsidiary dimensions : (Polarization, evaluating the performance of personnel, training, motivation, selection, planning ) and quality of institutional work as independent variable contains six subsidiary dimensions (Reliability, responsiveness, tangibility, security or confirmation, sympathy or contact, civil or merit) these variables reacted to form the frame of research. The research community consists of managers of managerial positions in the level of high and medium levels in the Ministry of Agriculture. We used technique of comprehensive inventory where the research was applied to all members of the community, which contains general managers and their assistants and heads of departments in the ministry administrations who numbered (34) institutional, and the response rate was (100%). The questionnaire had used as essential tool in collecting informatios and data, and (SPSS) program had used in analyzing data which used to get percentages and duplicates, and testing of Alpha Kronnebaj, and the coefficient of Spearman correlation and other analyzes that have been used to test the hypotheses of the research. The research results showed that the Ministry of Agriculture employs evaluating the performance leaders in the decision - making system for personnel matters, and attaches importance to the quality of institutional work, as well as in the use of information in the selection of the training process, as well as setting stimulation system in the ministry and to rely on the data and information as a system evaluating the performance leaders in the future planning, the results reflected the weakness of evaluating the performance of employees standards in the Ministry of Agriculture and lack of familiarity with workers on the results of the evaluation, which indicates the presence of a defect in the evaluation system, the ministry, which requires to develop the criteria that used for evaluation and inform the staff on the results to determine points of weakness and strength the process of evaluating their performance points. The research came out with set of recommendations based on the conclusions that I reached that include the need of the ministry to attach importance to evaluate the performance of more leadership and rely on their outputs in the process of improving the quality of institutional work system, to gain process efficiency, accuracy and objectivity in raising the level of quality of work, in addition to the development of performance criteria used in the evaluation of performance so as to be able to measure the performance of senior leadership and do not lead to interference in personal factors, And the need for a feedback system follows the process of evaluating the performance of leaders, which can be employed to recognize the results of their assessment and to identify weaknesses and avoidance, as well as identify the strengths and strengthened.

انتاج الطاقة الكهربائية لتلبية الطلب الكلي في العراق : دراسة تحليلية للمدة 1970 - 1999 == Production of Electrical Energy Fulfill The Total Demand In Iraq Analytical Study For The Period (1970 - 1999)

Author name: مازن سلطان عزيز ابو صيبع
Supervisor name: زهرة حسن عباس التميمي
Specific topic: Economy
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: The study aims to put general lines for the strategies to develop Iraqi electricity and rationalize of economic resources against attaining the demand for electricity in future through analyzing the economic and institutional variables which concern with electricity capacity for the period ( 1970 - 1999). this case would be done through three directions represented in nature of exploration of production resources , type of exploration of potential and available capacity in production stations of electricity and consuming of resources. In order to establish the aim of study and testing the validity of the hypothesis which says " The development and growth cannot be realized without production electricity energy using advanced technology fulfilling the requirements of all economical sectors and be the necessity of fulfilling personal requirements" The study reached for some suggestion & finding which the important of them are mentioned as following : 1. The rate of waste for natural resources are very high in general & specially for production of electricity.2. Declining the efficiency of exploitation of stations capacity for production of electricity during the period of study & decreasing of it in year 1999 contrasting with ( Alsco) countries, despite the a vial ability of public elements.3. Iraq needs for electricity for about ( 10030.4)MW in year 1999 and would be increased annually for about (3%)at least , if it would stay on the same electricity resources capacity per capacity in year 1999.besides the important of economic & social welfare.4. Declining of efficiency of using of electricity resources in Iraq through the years of study. that could be appear from the economic .measurement & the imperical studys such as such as : a. Validity of estimated regression relation among the rates of the growth of individual share for the electricity and for the GDP in constant prices for year 1980 by using test DF.b. The Regressions relations appeared that the rate of equilibrium among efficiency variables in long range , about(0.483). This rate is very low , so it is matching with declining of satisfying rate from electricity for different objectives.c. The results of testing of estimating relationship between behavior of dependent variables in short rang by Error correction mechanism , that there would be positive effect for changing of the independent variable against the dependant variable in short range & nearly about (0.73) from the differences among the real values and long rang & value of dependent variable would be corrected in every year by correcting the route of dependent variable growth slowly in accordance with its variables in short rang. That is of course would be related to the declining of the rate of satisfaction from the electricity & medium of productivity as a result of depending Iraq upon the revenues of oil exporting.d. Decreasing of flexibility of economic resources rationalization for Iraq against availability of electricity as a result of increasing of exploitation of electricity resources efficiency contrasting with rationalization of economic& social cost for electricity

دراسة مقارنة لطرق التقدير الحصينة لدالة البقاء مع تطبيق عملي على مرضى سرطان الدم في اليمن == A Comparative Study of The Robust Estimation Methods of Survival Function With Practical Application On Blood Cancer Patients In Yemen

Author name: ماجد هبة الله علي شريم
Supervisor name: هلال عبود البياتي
Specific topic: Statistics
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: ان معظم البحوث في موضوع المعولية اودالة البقاء يوجد عليها بعض الماخذ في عملية التحليل الاحصائي الدقيق الذي يهدف الى الحصول على مقدرات ذات مستوى عالي من الكفاءة. وتبرز اهمية الحاجة الى طرائق التقدير الكفوءة هذه التي تسمى بالطرائق الحصينة (Robust Methods) | Most of researches in the subject of reliability contain clear decrease in the processes of accurate statistical analysis which aims at getting estimators of a high level of efficiency and the important of the necessity to many efficient estimation methods, which are called robust methods, appears when the data of the studied phenomenon are contaminated , it means the observations contains outliers which may produce estimators which result in increasing (decreasing) in the (MSE).A matter which leads to unconfirmed statistical inference.From this point was the goal behind this research in reaching robust estimators of the survival function through studying some robust and classical methods and bayes methods in contaminated weibull distribution , and that is by assuming three levels of contamination. namely,(? = 0 , 0.15 ,0.30 ).Also , a robust method proposed to estimate the survival function for contaminated weibull distribution.In this study , the method of simulation was used to compare between the studied estimation methods of all levels of contamination.In this thesis , the researcher concluded the success of the proposed method in estimating the survival function in comparison with other methods depending on the measures : (IMSE) and (IMAPE) so, the researcher specified a chapter for applying and using the proposed method on real data to estimate the survival function s(t).

التاثير الوسيط للدعم التنظيمي وعلاقته بالعدالة التنظيمية في تحقيق التميز : بحث تحليلي في جامعة الكوفة == Organizational Justice Relationship of The Organizational Support Impact of Its To In Achieving Excellence Reconnaissance Search At The University of Kufa

Author name: ماجد جبار غزاي الفتلاوي
Supervisor name: غني دحام تناي الزبيدي
Specific topic: Business Administration
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: تناولت هذه الدراسة التاثير الوسيط للدعم التنظيمي المدرك لعلاقته بالعدالة التنظيمية في تحقيق التميز ومدى العلاقات مابين هذه المفاهيم الفكرية اذ بحثت هذه الدراسة التداخلات العملية لتعزيز نقاط الدعم التنظيمي المدرك في اعداد وتفعيل العدالة من خلال توفير التف | This study examines the mediator effect of organizational support for its relationship to organizational justice in achieving the excellence and the relationships among these intellectual concepts.This study researches the practical overlaps to enhance points of perceived organizational support in the preparation and activation of justice by providing the interaction among human resources (Interactive justice), and encourage the suggestions (procedural justice) and distributive justice, and on the impact of staff's feeling towards the support of their organization. The study finds the impact points of organizational support that be mediator in the relationship among the dimensions of justice organizational and excellence organizational based on personal commitment and focus on the customer and innovation.The selected sample was 299 teaching staff in colleges of the University of Kufa. The study finds that there are encouraging conclusions with higher level of perceived organizational support in respect of organizational justice.The study uses statistical tools to analyze and test the data and information by adopting statistical programs that ready for social sciences (SPSS,19), (LESERAL V.8.80) and (MOD GRaph) programs.Because the study has pursued research methodology and dimensional analysis , it is a diagnostic analytical study, and its importance lies in that it will emerge an intellectual philosophical for the nature of the study variables, based on effort applied organizational justice and organizational support, and the ability of organizational excellence to guide organizations surveyed to take advantage of its knowledge and experience stored in address its problems, in the context of the current reality of human resources working, and the possibility of formulating strategies for effective management of these resources, in the context of philosophy of organizational justice and organizational support to create human resources whom capable of giving these organizations with sufficient flexibility to adapt to environmental changes and achieve organizational excellence. The study implications has been presented on six chapters, the first chapter devotes to view the most previous studies relied upon the study, while the three subsequent chapters discuss the rooting intellectual and philosophical of the study variables, The fifth chapter specialize of the analysis and statistical treatment, the study concludes by sixth chapter examines the main conclusions, recommendations and proposals.The study reaches intellectual and applied conclusions that diagnose the truth and the reality of prevailing regulatory philosophy of justice in the application environment, and also the nature of perceived organizational support in the surveyed organizations, and reaches what human resources in organizations surveyed, the study also concludes to the conclusions and recommendations.

استعمال اساليب التنبؤ الاحصائية في تحليل قيم الصادرات النفطية == Using Statistical Forecasting Methods In Analyzing Oil Exports Values

Author name: لينا نضال شوكت
Supervisor name: قتيبة نبيل نايف القزاز
Specific topic: Statistics
Degree: Higher Diploma
Language: Arabic
University location: Baghdad
First pages:
Abstract: درست الباحثة موضوع اقيام الصادرات النفطية العراقية السنوية وللمدة من 1978م ولغاية 2014م بالاعتماد على ثلاث طرائق تحليل احصائية. الاولى، تحليل انموذج الانحدار الخطي المتعدد والتي تتطلب تحديد متغيرات توضيحية مؤثرة في قيم الصادرات النفطية وكانت هذه المتغيرا | The researcher studied the Iraqi Oil Exports Value form 1978 until 2014 using three statistical analysis methods. The first, Analysis of Multiple Linear Regression which requires determining independent variables that affect the Oil Exports Value and these variables were (barrel price and the average daily number of exported barrels). The second, Analysis of Polynomial Models (Growth Curve Model) and this model requires determining the suitable polynomial degree to represent the model as a curve which shows the increase or decrease that occurs in the data under study. And the third method is, Analysis of Time Series using Box - Jenkins models which requires identification of the suitable model and the degree of the model to represent the data. The three models, their equations and the mathematical relationships have been all defined, especially the ones that have been applied on the data.After analyzing the data using gretl and Matlab softwares and treating some problems that may occur to the data and getting the suitable models to represent the Oil Exports Value, in the Multiple Regression Model the confidence intervals of the estimated parameters have been calculated and testing the efficiency of the model and the estimated parameters using F and t tests. And in the Polynomial model, the curve has been estimated and drawn and calculating the confidence intervals of the parameters and the fitted curve and forecasting for 6 coming years and calculating the confidence intervals of the forecasting. In the Time Series model, the stationarity in the mean and variance of the series has been tested then identifying the suitable order for the model which was (2,1,3) and testing the independence of the error then forecasting for 6 coming years and calculating the confidence intervals of the forecasting

اثر تطبيق حوكمة الشركات في الحد من ممارسات ادارة الارباح بالتطبيق على عينة من الشركات المساهمة المدرجة في سوقي عمان والعراق للاوراق المالية == The Effect of Application of Corporate Governance In Limiting The Practices In Earnings Management An Applied Study Ina Sample of Corporation Listed In Iraq And Amman Securities Exchange

Author name: ليلى ناجي مجيد الفتلاوي
Supervisor name: بشرى نجم عبد الله المشهداني
Specific topic: Accounting
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: تهدف الدراسة الى بيان اثر تطبيق حوكمة الشركات في الحد من ممارسات ادارة الارباح حيث تلجا بعض الشركات الى ممارسات ادارة الارباح من خلال التدخل في عمليات القياس والافصاح المحاسبي للتاثير في الارقام المحاسبية المقرر عنها مستغلة بذلك المرونة في المعايير المحاس | the thesis aims to show the effect of corporate governance in limiting the practices in earnings management as same companies practice earnings management through the interference in the measuring and accounting disclosure taking into consideration the flexibility in the accounting standards to choose between the methods and policies of the accounting alternatives.The Junes amended sample was used to measure the earnings management. Indications promoted by The China Securities Regulatory Commission (CSRE) were used to measure the level of corporate governance in 42 companies listed in Amman (SE) and 20 companies listed in Iraqi (SE) and from all different economic sectors for the period 2006 - 2009 Conclusions reached 1 - Earnings management differs in the said markets from one sector to another. The Iraqi SE sectors are listed as follows : A) Hotel & tourism sector.B) Banking sector.C) Manufacturing companies.D) Services sector.E) Insurance sector.F) Agricultural sector. G) Investment sector.Where as in Amman SE sectors were listed as follows : A - Manufacturing companies.B - Services sector. C - Insurance sector.D - Banking sector. 2 - There is a positive relation between the variable of percentage of shares owned by top shear and the earnings management in all working economics sectors.3 - There is a negative relation between the posts of board directors and the top executive manager and earnings managing in all working of economic sectors except services sectors.4 - There is a negative relation between variable share percentage owned by top share and earnings management in all economics sectors.5 - There is a negative relation between the variable number of independent (outsiders) members of the board of directors and earnings management in all working economic sectors except the Banking sector in which there is no significant statistical relation.6 - There is a negative relation between the variable share percent owned by two of the top 10 shareholders after the first top holder and the earnings management in all working economic sectors except the insurance sector in which there is no significant statistical relation.7 - There is a negative relation between the foreign investments in the company and the earnings management in all sectors except the Banking and the Insurance sectors in which there is no significant statistical.8 - There is a positive relation between the holding company variable and earnings management in all sectors of working economic sectors except the services sectors in which is no significant statistical relation.9 - There is a positive relation between the variable of what the government owned share in that company and the earnings management is the ( manufacturing companies insurance and banking )sectors whereas the relation was negative in the services sector and in other sectors in general.The researcher recommended that it is vital to Issue laws and legislations concerned with corporate governance and a guide of the obligatory rules to be practiced by the Iraqi companies due to its impact on reducing the earnings management implementations

التحليل الجيبي المتقطع والمويجي المتقطع واستخدامهما في عمليات الاخفاء للصوت والصورة == Discrete Cosine Transform & Discrete Wavelet Transform In The Hiding Process For The Speech And The Image

Author name: ليلى مطر ناصر المحنة
Supervisor name: خميس عواد زيدان
Specific topic: Statistics
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: للاهمية المتزايدة للتحويلات الرياضية ومدى مساهمتها في حل العديد من المشاكل العلمية، وكذلك موضوع الاخفاء steganography، الذي اخذ مفهومة يتطور واستخدامه يتزايد يوما بعد يوم لما له من اهمية كبيرة في توفير الحصانة والسرية للبيانات الرقمية لاي وسط كانت وكذلك | Because of the increasing of importance of the Mathematical transformation and its solutions for the scientific problems, and also. The steganography which it is develop ,more and more, with its expanding in performing security and Robustness for the digital data for any media and for decreasing the capacity of the Storage and increasing the speed in transmitting and receiving, we use in this thesis the discrete cosine transform and the discrete wavelet transform as a comparative study through the hiding methods, which its applied in the time domain and frequency domain, and applied the statistical term MSE which is always used for comparative, and added another term MAPE as a support term and then calculate the PSNR to measure the quality for the images and sounds after reconstruction depending on the two terms, the colored image are applied because of its high specifications for its large area in the storage through hiding processes, which its depend on the (LSB) method of hiding. And in this thesis it is proposed a methods for designing new coefficients depending on the filters Haar and DB - 4, and the design depended on a mathematical and logical methods, and as an application for the comparative and proposed methods it depended on a sample of (24) persons which we took their images and speeches to apply the Process by hiding the speech through the image for every person, and then applied the transformations depending on the proposed Algorithms, the program is designed by the researcher using Matlab language, and then the comparative applied between the used methods which showed high quality in reconstruction and performed a proposed methods in the security depending on the mathematical transform and not only on the methods of cyphering for data through hiding and this methods for cyphering the mathematical transform give a high robustness for hiding data.

القيم التنظيمية وتاثيرها في الاداء الستراتيجي : بحث ميداني مقارن بين جامعتي بغداد والنهرين == Organizational Values And Its Impact On Strategic Performance A Field Study A Comparison Between Two Universities of Baghdad & Al - Nahrain

Author name: ليلى سعيد احمد
Supervisor name: عبد الرحمن مصطفى طه الملا
Specific topic: Business Administration
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: يسعى البحث الى تسليط الضوء على تحليل العلاقة والتاثير بين القيم التنظيمية بابعادها (ادارة المنظمة، ادارة المهمة، ادارة العلاقات، ادارة البيئة) والاداء الستراتيجي بمتغيراته (المنظور المالي، منظور الزبون، منظور العمليات الداخلية, منظور التعلم والنمو ) في رئ | The researcher seeks to shed light on the relationship analysis and the impact between organizational values in all its dimensions (Organization Management, Mission, relationship management, environmental management) and strategic performance (financial perspective, customer perspective, the perspective of internal processes, learning and development) in the presidency of Two Universities of Baghdad & Al - Nahrain. The main research problem has been the following question : Is there a relationship and the impact of between organizational values and strategic performance? and to clarify the relationship between research variables, it has to prepare three main hypotheses, The resolution was adopted as a key tool for data collection and analysis were subjected to the questionnaire validity and reliability tests, which included the sample (64) an individual, As included (35) Manager of the University of Baghdad, and (29) Manager of the University of Al - Nahrain, who occupy the post of president of the university, and his assistant, scientific and administrative, and the heads of scientific and administrative departments, and to analyze the Research data used statistical program SPSS and EXCEL program, and of the most important statistical tools used in the analysis is the (percentage, duplicates, mean, standard deviation, coefficient of variation, correlation coefficient, simple regression analysis, and test Mann - Whitney). The research has come to a group of the most important results and the presence of high - level organizational values deportation strategic and performance of all its variables at Two Universities of Baghdad & Al - Nahrain, Among the most prominent results a correlation relationship moral high degree and with proportional effect between organizational values in strategic performance overall and by sub - variants, and also to a number of conclusions most important that he did not show any significant differences between Two Universities of Baghdad & Al - Nahrain in organizational values and strategic performance

مقارنة بعض طرائق تقدير دالة المعولية الضبابية == Compared To Some of The Methods of Estimating Fuzzy Reliability Function

Author name: ليث فاضل سيد حسين النعيمي
Supervisor name: انتصار عريبي فدعم الدوري
Specific topic: Statistics
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: عند احتساب اوقات الفشل للمكائن والمعدات نلاحظ بانها تكون غير مؤكدة او ضبابية في اغلب الاحيان وعلى اساس المركبة او النظام لهذا تناولت هذه الرسالة تقدير دالة المعولية الضبابية في حالة المركبة والانظمة المفردة (المتسلسلة والمتوازية) وباستعمال ثلاث طرائق هي : | When calculating the failure times of the machines and equipment note that it is fuzzy or uncertain in more often on the basis of the component or system to this paper this estimate fuzzy reliability function in the component case and series and parallel system by using three methods are : First, the conventional method : Under this method has been used the failure function and a new membership function of beta type be more flexible in statistical applications, according to this method was derived estimators fuzzy reliability function for series and parallel systems. Second, The number fuzzy method (A ) ?(i - v) level (1 - ?, 1 - ?) based on the confidence limits : one of the methods in which based on in estimation on the mean and standard deviation of the times of the failure of the machinery and equipment and give fuzzy reliability function estimate both serial and parallel systems confidence limits are to be used to fuzzy numbers two levels (1 - ?, 1 - ?).Third, the Signed distance method : good methods that give estimating fuzzy reliability function for both systems are similar to estimate the point.That the methods above give estimate reliability Blur function for both systems was a comparison between the advantage of these capabilities and employ the style of simulation manner Monte Carlo (Monte - Carlo) by writing software language application (Matlab) and the experiences and sizes of different samples and both systems were relying on mean square error (MSE) of the comparison between the estimation methods Vtm reach a predestined way normal preference, showing through the mean square error (MSE) that showed a nuance in between estimator ways : how many The number fuzzy method (A ) ?(i - v) level (1 - ?, 1 - ?) and the way the Signed distance method of the fact that the way The number fuzzy method (A ) ?(i - v) level (1 - ?, 1 - ?) based at its sole discretion to Tabulated values of the distribution (t) and that way the distance indicator based on the indicators way above, for this from the perspective of the researcher, all estimation methods are considered good and can be used in the approved equipment and machinery in their production productive companies.In the practical side researcher has used real data for the purpose of estimating reliability function of the system and fuzzy sequential function reliability of the system parallel Blur, adopted by the General Company for Electrical Industries of the Ministry of Industry and Minerals in Baghdad records.

اختبار ممارسة التحول في مقدرات ادارة الموارد البشرية طبقا لنموذج Ulrich 2012 وزملائه : بحث تطبيقي في عدد من المصارف العراقية الاهلية == Test Transformation Practice In Human Resources Management Competencies According To The Model (Ulrich : 2012) And His Colleagues : Applied Research In A Number of Iraqi Private Banks

Author name: ليث عادل حميد رشيد
Supervisor name: ناظم جواد عبد سلمان الزيدي
Specific topic: Business Administration
Degree: Master
Language: Arabic
University location: Baghdad
First pages:

تاثير الثقة التنظيمية والصراع البناء في راس المال الاجتماعي : دراسة استطلاعية لاراء عينة من العاملين في معهد التدريب النفطي - بغداد == The Effects of Organizational Trust And Constructive Conflict On Social Capital Opinion Poll Study of Oil Training Institute/ Baghdad Workers

Author name: ليث خليل ابراهيم
Supervisor name: غانم رزوقي انيس العزاوي
Specific topic: Business Administration
Degree: Master
Language: Arabic
University location: Baghdad
First pages:
Abstract: هدفت الدراسة الى اختبار علاقة وتاثير الثقة التنظيمية بوصفها اعتقاد والصراع البناء في تطوير راس المال الاجتماعي من خلال السلوكيات التي تذهب الى ما وراء الدور المطلوب ادائه, مثل التعاون والتكافل وسلوك الثقة وسلوك الكرم. وتضمنت الدراسة اختبار عينة متكونة من | This study aim to examine the relationship and effects of organizational trust as belief and constructive conflict on social capital development by the extra - role like Collaboration, solidarity, Trust (attention, behavior), and Generosity. A study involved 153 employees from Oil Training Institute/ Baghdad. A questionnaire was used as tool for measures the variables of the study by describe sample answer and knowing the level of organizational trust , constructive conflict and social capital in the organization, knowing the significant correlation among them, significant effects of each variables to answer the issue and to achieve study aims. for purpose of processing the data and the information related to the study the researcher has used many statistical techniques, such as (mean, standard deviation percentages, spearman rang, pseudo R - square, path analysis). The study has reached to several conclusions, such the availability of the main three variables in high level in the organization, availability of significant correlation among them, significant effect for each of the organizational trust and constructive conflict on the social capital , this effect increases when they are together rather than separately, these results came appropriate with the hypotheses related to this aspect. According to the results of the study, the researcher has presented a number of recommendations, such as necessity of encouraging the trust among employees by institute management , establish indications to measure and reward for it, make employees liability for trust, training the employees on conflict handle styles in constructive way, keeping a conflict at optimal level , caring about the social side and informal structures ,encouraging behaviors that developing social relationship and establish indications to measure and reward for it.

الدمج بين الطرائق الاعتيادية والغلاف الطيفي بالتحويلات للاستقرارية باعتماد القطع والنافذة المثلى

Author name: لميعة باقر جواد الجواد
Supervisor name: عبد المجيد حمزة الناصر
Specific topic: Statistics
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: يعد استخدام الغلاف الطيفي لتحويل السلاسل غير المستقرة الى سلاسل مستقرة من الطرائق الحديثة اذ اقترحها الباحث Stoffer واخرون خلال العقد الاخير من القرن الماضي. والطريقة المستخدمة سابقا تعتمد التحويل الذي يعطي اقل البواقي. ولتلافي السلبيات التي تكتنف الطري | The use of the Spectral Envelope to transform non - stationary series to stationary series is considered as recent method. It is suggested by Stoffer ~ at el. through the last ten years of the past century. The method previously used depends on the transformation, which gives minimum residual. And to overcome the disadvantages that surround these two methods we saw that the best is to combine between them. Since the spectral density function of the transformed series needs to be smoothed, so we began to study the best smoothing window and to know the optimum truncation point by using two criteria, absolute and relative, for compression between the two the windows and the truncation points

مقارنة بعض طرائق تقدير معلمات الانموذج المختلط من الرتبة الاولى باستخدام المحاكاة == Comparison Some Parameters Estimation Methods For Mixed Model of Low Order Using Simulation

Author name: لمياء محمد علي البدراني
Supervisor name: لميعة باقر جواد الجواد
Specific topic: Statistics
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: يهدف البحث الى دراسة طرائق تقدير معلمات الانموذج المختلط (الانحدار الذاتي - الوسط المتحرك) (Stationary Autoregressive - Moving Average Model) المستقر من الرتبة الاولى ARMA(1,1) مع دراسة الحالات الخاصة له، وهي : ARMA(1,0), ARMA(0,1) دراسة نظرية وتجريبية با | This thesis aims to studying the parameters estimation methods of the stationary mixed model (autoregressive - moving average) of low order ARMA(1,1) with the special cases of it which are : ARMA(1,0) and ARMA(0,1) in regard to time domain analysis in univariate time series.Using Exact maximum likelihood estimation methods (EML) and the approximating methods : backforecasting (BF) and Conditional least square (CLS) beside Moment method (M.M) with suggested conditional method (SC) and alternative method for moment method of ARMA(0,1) model. Driven some estimators for some special model.A comparison is done among the different methods by using criteria : mean square error (MSE) , mean absolute percentage error (MAPE) and average absolute error (AAE) and using several simulation experiments ,and iterating each experiments(1000) times, The results it found that the (EML) is better and more efficient than others. From the more notice conclusions that the relation between the sign and moment estimator for ARMA(1,1) model that is : when the sign is positive means the root gives invertable model and when the sign is negative means the root gives invertable model. The thesis consisted of four chapters, The first chapter contained introduction and literature review. The second chapter discussed the deferent estimation methods, The third chapter contained the experimental part using simulation for different sample sizes of series. It had been arrived at some conclusions and recommendations were consisting the fourth chapter
1 ... 114 115 116 117 118 ... 218