العلم العراقي
عرض: 25 50 75 100 النتائج

نتائج البحث: 11 من أصل 11

تنقيب البيانات التعليمية لتحسين جودة مخرجات التعليم العالي == MINING EDUCATIONAL DATA TO IMPROVE THE QUALITY OF HIGHER EDUCATION OUTCOMES

اسم المؤلف: ليث سالم خلف
اسم المشرف: نشات جاسم محمد
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: الجامعة التقنية الوسطى - الكلية التقنية الادارية
اللغة: الانكليزية
الصفحات الاولى:

تخطيط الانتاج الاجمالي الضبابي باستعمال البرمجة الهدفية الضبابية مع تطبيق عملي == Fuzzy aggregate production planning by using Fuzzy goal programming with practical application

اسم المؤلف: رشا ضاري كامل
اسم المشرف: عبد الجبار خضر بخيت
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:

بناء انموذج رياضي لتجزئة التخطيط الاجمالي (DISAGGREGATE) مع تطبيق == Building A Mathematical Model To Fractionation The Total Planning (DISAGGREGATE) With Practical Application

اسم المؤلف: وعود سالم عباس
اسم المشرف: عبد الجبار خضر بخيت
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تناولت الدراسة موضوع تخطيط الانتاج الاجمالي لشركة الفداء العامة التابعة لوزارة الصناعة والمعادن من خلال تجميع جميع منتجات هذه الشركة التي تشترك بعضها بالبعض الاخر ضمن خصائص وقت التنصيب ووقت الانتاج وكلف الخزين على شكل ثلاث عوائل انتاجية هي (الاسطوانات اله | The study Addressed the total production planning to the fadaa public company redemption of the Ministry of Industry and Minerals by grouping all the products of this company that share to each other the other part of the time of installation and production time characteristics and cost inventories on three families of productivity is a form (hydraulic cylinders, Aldblatt (dampers), wiring, hydraulic ) by building a mathematical model based on a set of strategies for overall planning for the purpose of optimization of the potential productivity and reduce costs through the production process style of programming integers and unity of time, measured month. Also it addressed the issue of fragmentation of the total production planning (fragmentation of families) to the main purpose of their products to meet the demands of customers relying on the main indicators of the first model as inputs to tsecondmodeandStatement of distractions during the implementation of production lines, which depends on the first mathematical model outputs to reduce distractions for a total of one family products during the implementation of production lines and accelerate the process of implementation of the products on time through the use of proper programming setup using linear programming method within a week Transaction It serves as a so - called production schedule chairman, and through the application of the models show that the total costs of the company in accordance with the mathematical models used was (361,407,800) million while the cost of the company executing the plan and the duration of time itself in 2014 has reached (390 330 100) million, a difference of (28,922,300), and this is evidence of optimization models for production planning.

بناء انموذج ديناميكي وانموذج هدفي في ظل البيئة الضبابية مع تطبيق عملي == Building of Dynamic Model And Goal Model Under Fuzzy Environment With Practical Application

اسم المؤلف: هبة الله سعد عبد الغني
اسم المشرف: محمد صادق عبد الرزاق الدوري
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: في مشكلة اقصر مسار لشبكة اعتيادية يفترض بان يكون صانع القرار متاكدا من البيانات في الشبكة, والتي تمثل الوقت والمسافة والكلفة...الخ, لكن في واقع الحياة توجد دائما شكوك حول هذه البيانات اي لايمكن تحديدها بشكل دقيق, ففي مثل هذه الحالة يتم تمثيلها بالاعداد | In the shortest path problem of classical network, It is supposed that the decision maker has assured from network data ,which represent time , distance and cost …etc. But in real live there are always suspicions about these data that is may not be determined exactly , in this case it is represented by fuzzy numbers.In this thesis a directed acyclic network was built with times represented by triangular fuzzy numbers to find to transport the medicines from Iscan store to Al_Amal hospital of cancer tumors where the shortest path has minimum time among other paths in the network ,two deferent methods were used for solving the problem, the first method is Bellman dynamic programming.In this method a fuzzy times are treated by signed distance ranking method and solve the problem as classical network. The second method is to formulate the problem with fuzzy times as a multi objective linear programming model and use the weighted additive method to unite the objective functions as a single objective function with a defined weights and then solve the problem classical linear programming we found the shortest path in both the methods are same and minimum time in the first method equal to the optimal solution for second method , and in addition minimum fuzzy time in the second method Is obtained.

بناء انموذج السيطرة على الخزين في ظل ضبابية الطلب وفترة الانتظار مع تطبيق عملي

اسم المؤلف: غسق محمد عبد
اسم المشرف: حامد سعد نور الشمرتي
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: واضح ان موضوع السيطرة على المخزون له اهمية واهتمام من كثيرين لكونه يتميز بطابع الشمول, اذ تكاد تكون قائمة المخزون في الوقت الحالي لانهائية , وكذلك تواجه اي ادارة او مؤسسة صعوبات في اتخاذ القرار لتحديد كمية المخزون وذلك لكي تحقق توازنا بين كلفة المخزون وا | It is clear that the subject of the control of the inventory has to be attached and the interest of many, because it is characterized by inclusiveness,as are almost infinite inventory, and also facing any administration or difficulties foundation in decision - making to determine the amount of inventory in order to achieve a balance between the cost of inventory and keep it in exchange for the cost of disabling the plant or the cost of the loss of profit due to the loss of the goods required by the cusomers , not to mention when he discovers the environment under study fuzzy because of the accuracy of the data or similarity somewhat or change continuously.It has been in this letter build a mathematical model using linear programming misty figures fuzzy function trigonometric tracking three products (oil, White, jet fuel, grease) and for quarterly and one year (2014) was to address motion blur using the method of integrative representation of the average gradient and then solving the specimen through direct compensation the cost of production and actual inventories in the goal of the specimen proposed and to find the total cost and compare it with the cost of winning the college from the specimen after being admitted as a model linear programming in turnkey program (WIN QSB) function turned out that the total extracted cost by less than the actual total cost of the program and this Matsay him company, which reduce costs or at least achieve a balance between the cost of inventory and keep it in exchange for the cost of disabling the plant or the cost of the loss by the loss of material in the case of demand

استعمال سلاسل ماركوف وشبكات بيز الديناميكية لاحتساب معولية شبكة ماء الاعظمية == Use of Markov Chains And Dynamic Bayesian Network To Calculate The Reliability of Water Network Adhamiya

اسم المؤلف: زينب مجبل ابراهيم
اسم المشرف: لميعة باقر جواد الجواد
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: اهتم الباحثين في دراسة المعولية والاتاحية لاستخدامها في مجالات عدة ومنها الطبية والهندسية والميكانيكية وفي علوم الحياة الخ. وهنالك اساليب وطرق مختلفة لدراستنا منها الطرائق المعلمية واخرى لامعلمية في معرفة التوزيع لاوقات الفشل وفي حالة فشل الباحث في التو | Researchers interested in the reliability and availability, to be used as a study in several areas, including medical, engineering, mechanical, and in the life sciences etc. There are different methods and ways to study such methods parametric and another for non - parametric to know the distribution of the times of failure in the case of a researcher failed to reach an appropriate distribution of one of these methods non - parametric is the style of Markov chains and dynamic Bayesian networks where the use of Markov chains to calculate the reliability and availability, and then draw a transitional scheme of the system consisting of these five units and the formation of differential equations governing the system and then solving these equations to find the probability that the network status assigned to be in time t was also a possibility account of the situation balanced when t is very large, and through it is calculated reliability and availability. But the style dynamic Bayesian networks as it has been translated dynamic fault tree to Bayesian networks, dynamic and has been the possibilities for calculating each phase of the network and calculating reliability through MATLAB software (2015a) and writing for each gate equations as the value of each of the gate static AND gate dynamic calculation WSP, a gate warm and the integration of the two preceding gates gate static OR after calculating the value of this gate is calculated reliability can be observed reliability decreasing values with increasing time as the reliability value when t = 0 is 0.999 that is, they are not equal to 1 because there are repairs to the network and value when t = 8640 is 0.023, and decreasing the reliability of the system with time and close to zero after 20 years from now

استعمال البرمجة اللاخطية في بناء نموذج رياضي لتخطيط الانتاج وفق قيود الخصم على الكمية المشتراة == Usage of Non - Linear Programming In Building A Mathematical Model For Production Planning According To Discount Constraints Put On Bought Amount

اسم المؤلف: زينب علاء حميد
اسم المشرف: عبد الرحيم خلف راهي الحارثي
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: في هــذه الرسالة تـم بناء انمـوذج تخطـيط الانتاج (على المـدى المتوسـط) في الشـركة العامـة لصناعة الزيـوت النباتيـة باستعمال اسـلوب البرمجـة اللاخطـية بسـبب قـيود الخصـم على المواد الاولية الداخـلة في المنتجات الرئيسـية للشـركة ودراسـة حالة الخصـم على ثلا | In this thesis was to build a model of production in the medium term planning in the general company for the manufacture of vegetable oils using nonlinear programming method due to the discount restrictions on raw materials involved in the company’s main products and study the opponent case of the only three products among the six products because they require intense mathematical calculations lead to a significant expansion of the research was to focus on that piecewise makes the target function is not linear because they contain a series of line segments included breakpoints that earn the target function form sporadic presence intermittent developments[2][43] , application of the style of programming integers on a linear model using the program Win Qsb plan earnings productivity (3,640,000,000) billion dinars the method algorithm simulated annealing on the nonlinear model using Matlab software profits of productivity amounted (7,556,100,000) billion dinars a difference (3,916,100,000) billion dinars note that the algorithm method of simulated annealing give the best of programming integers method results as the company achieved the fullest extent of the profits according to the opponent while programming the numbers in a manner correct, which in turn destroys the rebate check cases a small percentage of the profits. This means that the results that have been reached in a manner simulated annealing algorithm is better than the programming method of integers.

بناء انموذج رياضي لمشكلة النقل في ظل قيود ديناميكية الطلب مع تطبيق عملي == Building A Mathematical Model For The Transportation Problem Under The Dynamics of Demand Restrictions With Practical Application

اسم المؤلف: زهراء قاسم هاشم
اسم المشرف: عبد الجبار خضر بخيت
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تم في هذا البحث بناء انموذج رياضي لمشكلة النقل لبيانات الشركة العامة لتجارة الحبوب في بيئة من الطلب المتغير وحدود على الكميات المعروضة والكميات المطلوبة , كما عالج الانموذج حالات الطوارئ التي تواجه الشركة من نقصان او عدم وصول كميات الحبوب للسايلوات وذلك | In this research we built a mathematical model of the transportation problem for data of General Company for Grain Under the environment of variable demand ,and situations of incapableness to determining the supply required quantities as a result of economic and commercial reasons, also restrict flow of grain amounts was specified to a known level by the decision makers to ensure that the stock of reserves for emergency situations that face the company from decrease, or non - arrival of the amount of grain to silos , also it took the capabilities of the tanker into consideration and the grain have been restricted to avoid shortages and lack of processing capability, Function has been adopted in the mathematical model is a total of two functions : the first linear to reduce the overall costs of the transportation problem And the second linear fractional represent the proportion of public expenditure for the silos to college profits.a balanced model and equivalent to model the original problem has been formulated. The results proved the efficiency of the model in the distribution of the amount of grain where the total cost was reduced to (24%) with ensuring the existence of reserve stocks and meet the demand of mills.where the reserve stocks sufficed nearly to a month and half , The total expense was reduced by (32%) and the profits ratio was maximize at (7%) , the mathematical model was solved by using,hadvancedrsoftware(LINGO14.0)

بناء نموذج صفوف الانتظار باستخدام المقدرات الحصينة لقسم الباطنية / مستشفى بغداد التعليمي == Building Queuing Models Using Robust Estimators For The Department of Internal / Baghdad Teaching Hospital

اسم المؤلف: حسنين حامد احمد الطائي
اسم المشرف: مروان عبد الحميد عاشور
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: ان للشواذ الاثر الاكبر في عملية تقدير معلمات توزيعي الوصول والخدمة لنماذج صفوف الانتظار، عليه كان لابد من استعمال طريقة لاختبار هل ان هذه البيانات تحتوي على قيم شاذة ام لا، فجرى استعمال طريقة ( Tukey ) لهذا الغرض، وقد تبين ان هناك مشاهدات شاذة في مقدرات | As the Outliers greatest impact in the process of estimating the distribution of arrival and service parameters, it was necessary to use the method to test Are these data contain abnormal values or not, ran the use method ( Tukey ) for this purpose and is of the most popular ways to discover the outliers, and have found that there are views abnormal ( outliers ) in the estimators of a distributed both arrival and service, which have a significant impact on the calculation of these estimators have been addressed through the use of robust estimation methods ( Robust estimation methods ) be of the effectiveness and feasibility of giving robust estimator better than the estimated normal extracted function in a manner as possible the greatest normal ( Ordinary Maximum Likelihood estimation ) ( MLE ) , as was the use of the estimators of the greatest possible function weighted ( weighted Maximum Likelihood estimation ) ( WMLE ) in the estimation process, was the best estimate is the estimated robust existence of outliers that have had the greatest impact on the process of improving the efficiency of the performance of a queueing theory, which led to relieve pressure on the service system, which in turn reduces delays for patients.Robust queues models applied and their role in improving the performance of the Department of Health in Baghdad / city of Medicine / Baghdad Teaching Hospital / Advisory clinic esoteric. It was found that the views of extremist dramatically affect the outcome queue estimates of the distributional arrival and service which will reflect negatively on the measurements of the efficiency of performance indicators queuing system and therefore it leads to non - solid results because that way possible ( Robust Maximum Likelihood Estimation ) ( RMLE ) used in the process of estimating the parameters were the best way possible regular ( MLE ) , as the method used was able to find robust estimator good efficient and of great effectiveness and that processed data containing outliers in the sample.Through Applied study of data researcher found that the queue model was (M / M / C) : ( GD / ? / ?) at a rate of three doctors who represent a number of service channels and the size of the community, as well as the size of both unlimited system.The key findings of the research is to adopt robust estimators for distributional arrival and service models queues in general because they are working to address the impact of outliers winning in the data.

الخوارزمية الجينية في السيطرة على الخزين الانتاجي المتعدد : بحث تطبيقي == Genetic Algorithm For Controlling Multi - Production Inventory (Applied Research)

اسم المؤلف: الاء حكمة عبد الستار البياتي
اسم المشرف: عبد المنعم كاظم حمادي الشكري
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: تضمن هذا البحث حل لمشكلة السيطرة على الخزين الانتاجي المتعدد اعتمادا على نماذج الخزين المحددة للمنشات الانتاجية في حالة وجود وعدم وجود عجز لبعض منتجات شركة مصافي الوسط الاكثر طلبا في اسواقنا المحلية، اذ تم اختيار سبع مواد للدراسة وهي (البنزين، النفط الا | This research dealt with solving the problem of control of inventories multi - productive based on determenestic inventeries models for production institutions with and without shortage for the most requested productions in our local markets for Midland Refineries Company, such that seven materials have been selected of the study, namely, (Benzene, White Oil, Jet Fuel, Gas Oil, Grease, Oxidized Asphalt and Liquid Gas).Firstly the traditional methods have been applied in extraction the optimal economic quantities and the total cost of the inventoies, for the purpose of improving the results, the genetic algorithm has been used on the results obtained from traditional methods, which is one of artificial intelligence algorithms that rely on the mechanism of random search and selection of the science of natural genetics. Roulette wheel selection has been used as a method to select a set of chromosomes and one crossover point to generate new society, and the mutation has been applied by change only one bit from any chromosome gas been selected randomlly to increase diversity in the new society and try to solve the optimization solution according to the value of the fitness function. The results of applying traditional methods in inventories models showed shortage cases in production relative to demand for materials (Benzene, White Oil, Jet Fuel, Gas Oil, Grease, Oxidized Asphalt and Liquid Gas) proportion rates ranging between (194.63% - 722.46%) and an increase in production up to 98% in Oxidized Asphalt material.The use of genetic algorithm led to reduce the shortage in production relative to demand for Benzene, White Oil, Jet Fuel, Gas Oil and Liquid Gas at proportion rates ranging between (21.64% - 75.92%). Also the results showed that the use of genetic algorithm contributed to cover the shortage in production as compared with the traditional methods at change rates (14.01% - 28.61%) for Benzene material, (13%) for Jet Fuel material and (23%) for Liquid Gas material. The results of genetic algorithm improved the results of the traditional methods for Benzene, White Oil, Jet Fuel, Gas Oil, Grease, Oxidized Asphalt and Liquid Gas materials at rates ranging between (12.98% - 42.66%). And finally the use of genetic algorithm reduced the total cost of the inventories of all the company's products at rate 26.15%.This thesis contained four chapters : the first chapter includes : introduction, the goal of the research, the research problem and refrence review. The second chapter includes : the theoretical side distributed over two sections first topic the basic concepts of the system of inventories; the second section includes an explanation of the style of a genetic algorithm and method of implementation. Third chapter includes : the practical side (display data that has been assessed from Midland Refineries Company distributed throughout the whole year, extract the optimal economic quantities by traditional methods and improve them by using the genetic algorithm, interpretation and analysis of the results obtained). Fourth Chapter includes : the most important conclusions of the researcher and her recommendations for future studies.

استعمال نظرية صفوف الانتظار والمحاكاة لتقويم الاداء في مستشفى اليرموك التعليمي == Use queuing theory and simulation to evaluate the performance of the Yarmouk Teaching Hospital

اسم المؤلف: محمد مهدي محمد
اسم المشرف: صباح منفي رضا الشمري
الموضوع العام: الادارة والاقتصاد
السنة: 2016
الموضوع الدقيق: بحوث العمليات
الدرجة: ماجستير
الجامعة: جامعة بغداد
اللغة: العربية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: The prediction of the performance and finding out the measurement for waiting queue in yarmook teaching hospital and some other consultancy clinics is considered one of the crucial aspects. This is due to long facing the patients in this hospital. Thus’ modeling and simulation techniques was exploited in queue waiting theory to analyze such problem. Then crystallizing future perspective scope about the nature of working system so decision makers can take the proper measure to overtake the problem. The research has recruited modeling and simulation for the prediction of waiting time for those attending the hospital. A model of single service channel and double channels were applied. It is important to obtain realistic and scientific indicators to serve this research so can be applied at the bases to solve the problem. This research has reached to some conclusions. The major conclusion is the existence of waiting in specific week days it is recommended to increase the number of service channels particularly in the consultancy clinics. It has been noticed that no waiting queues in some week days and thus it is recommended to reduce the number of channels in such days particularly in the pharmacy.