Show: 25 50 75 100 Results

Search results: 25 out of 531

الاتساق الذاتي وتحليل المكونات الرئيسة == The Self - Consistency And Principal Component'S Analysis

Author name: سحر طارق محمود الرحيم
Supervisor name: رفعت لازم مشعل الخميسي
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: تعني عبارة " الاتساق - الذاتي " اختبارا لمحور المكونات الرئيسة عندما يرتكز التوزيع على المحور الذي يعطي تقريبا بسيطا للتوزيع الاصلي متعدد المتغيرات.جرت عملية الاختبار بفحص نقص المطابقة Lack of Fit Test في ضوء طريقة البوتستراب (Bootstrap ) اي ( تكرار ا | The term " Self - Consistency " means ; examine the Self - consistency of a principal components axis : when a distribution is centered on a principal component axis, which provides a simple straight line approximation to a multivariate distribution.A principal component axis of a random vector X; is self - consistent if each point on the axis corresponds to the mean of X given that X projects orthogonally on to that point.this examination is done by " Bootstrap - Lack of fit " test applied on to two kinds of data set (real and simulation) with different samples (small, medium, large),depending on the probability values for getting levels of significance (to assess the self - consistency of principal component axis) which is based on the frame work of the data set, whether it will be true (towards to the elliptical form for the multivariate normal distribution) or generated data set using the restrictive simulation ( towards to the asymptotic spherical form for multivariate normal distribution ) that's for estimating the self - consistency by the hypothesis ;Hk : Yk is self - consistent for Xprincipal component analysis for factor analysis is use with the aim of analyzing the large number of variables and their effective factors by the factor rotation procedure which is assumes also the multivariate normal distribution, with proposed technique, based on the smallest column on X for different sizes of samples ( small " 5 - 20 " , medium " 25 - 50 ", and large " 60 - 100 ").High level of fit, is the result of " Bootstrap - Lack of fit" test in all sample size for all research variable's; with little difference and the best for male group of the results for female group on the size ( 5 - 35 ) , conversely for another size's.and also we saw highest level of self - consistency in the small sample size ( 5 - 20 ) for true data set using direct oblimin rotation method for male group, in the medium sample size ( 25 - 50) using the same method with direct method( None) for female group.In generated data set by normal restricted simulation technique, also high level of fit is the result of " Bootstrap - Lack of fit " test in all sample size's and for all sample Size's (small, medium, large) and for tow group's (male, female), which indicate to the usefulness of using the restricted simulation technique to take pure data set, and the model with high level of stationary.also we saw highest level of self - consistency in the different sample size's, using the varimax rotation method for tow Group's (male, female), the two method's ( none, direct oblimin rotation) in some of sample size's which refers to corresponding the normal stat with varimax rotation method ,that is well known of its object for simplified explaining the factor matrix by maximization the loading variance

مقارنة اسلوب بيز مع طرائق اخرى لتقدير دالة المعولية لتوزيع باريتو من النوع الاول == A Comparison of Bayesian Approach With Another Methods To Estimate Reliability Function For Pareto Distribution of The First Kind

Author name: ستار محمد صالح
Supervisor name: صباح هادي عبود الجاسم
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: في هذه الرسالة تم تقدير دالة المعولية لتوزيع باريتو من النوع الاول (Pareto Distribution of the First Kind) في حالة توافر معلومات اولية عن المعلمات وفي حالة عدم توافرها وتم توظيف اسلوب المحاكاة (Simulation) بطريقة مونت كارلو (Mont - Carlo) للمقارنة بين طرا | In this dissertation, an estimation of reliability function for the Pareto Distribution of the First Kind has been done in the case of exists a prior information and not exists. A simulation approach by Mont - Carlo method is used to comparisons between the methods of estimation to find the best method of estimation this function. To realizes the object of search, the search is divided into four chapters. The first chapter contain an introduction, object of search and the review of literature. The second chapter contain the theoretical part. The third chapter include the experimental part, and finally the fourth chapter include the conclusions that researcher find they and recommendations suggested from him about the search. The researcher find that the Bayes approach is the best in estimation of reliability function comparing with the other method of estimation through depending on the two statistical measurements integral Mean Squared error (IMSE), and integral Mean Absolute percentage error (IMAPE).

مقارنة الاساليب المستخدمة في تحديد عدد المركبات الرئيسة مع جانب تطبيقي == The Comparison of Methods Used In Determining The Principal Components Number With An Applied Aspect

Author name: زينة ياوز عبد القادر
Supervisor name: دجلة ابراهيم مهدي العزاوي
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: استخدم تحليل المركبات الرئيسة في تحليل الكثير من الظواهر الاجتماعية والاقتصادية، ومن هذه الظواهر اخترنا ظاهرة تخص شريحة واسعة من مجتمعنا الا وهي ظاهرة تاخر حصول التدريسي الجامعي على اللقب العلمي التالي، ولان تحديد عدد المركبات الرئيسة الداخلة في تحليل ا | The principal components analysis is used in analyzing many economic and social phenomena; and one of them is related to a large group in our society who are the university instructors. This phenomenon is the delay occurred in getting university instructor to his next scientific title. And as the determination of the principal components number inside the principal components depends on using many methods, we have compared between three of these methods that are : (BARTLETT, SCREE DIAGRAM, JOLLIFFE). We concluded that JOLLIFFE method was the best one in analyzing the studying phenomenon data among these three methods, we found the most distinguishing factors effecting on the phenomenon was (the number of the lectures the university instructor has, the administrative routine, the entertainment activities, family situation, shortage in academic staff, pages number, the use of the internet and the political attitude). So , we should begin with treating these factors as a first step for motivating university instructor to develop his thinking capabilities.

تحليل التجارب ثنائية العوامل المتزنة وغير المتزنة لبيان اثر عاملين على بعض صفات محصول الشلب في العراق

Author name: زينة ابراهيم حسن رشيد
Supervisor name: كمال علوان خلف المشهداني | احمد شهاب احمد
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: مما لاشك فيه ان التجربة العاملية (التي تهتم في وقت واحد وتجربة واحدة بدراسة عاملين فاكثر ),اذ ان لكل عامل مستويات ,وبتوافيق مستويات العوامل تتشكل المعالجات العاملية , هذه التجربة لها اهمية كبيرة في الجوانب التطبيقية وتتسم بالمزايا : - 1انها تسهم في تقلي | 1. It contributes to reduce the cost, time, efforts, and experimental units as a result of the implementation of a single experiment, rather than two or more experiments.2. Provide us by information of the main effects of factors and the effects of interactions of these factors.3. The possibility to compare all different combinations of two or factors to be studied.4. These experiments provide an opportunity to compare the levels of each factor separately, as if the experiment was devoted to him alone.Therefore, the information that we get from factorial experiments always be more perfect and realistic than those we get from single - factor experiments.The factorial experiments held by adopting equilibrium that is oriented common and natural , it might generated cases of unbalance ( what is allocated of the number of plots for each uneven factorial treatment), which may be done on purpose by the researcher (performing the experiment) or it may be due to lack of materials or resources, which leads to identify groups of processing that will be dealt with, or for other reasons like damage or loss pieces or results of experimental subject to certain processing. Such situations cause them a problem of how to analysis it, so the goal of this message is to research deeper theoretically to contribute in find solutions for the research problem and the vast knowing of the analysis methods of the balanced and unbalanced factorial experiments, with discussing the possibility of propose a method or technique to analysis this case. since been in separate theoretical aspect of this message addressed to several ways in addition to provide a proposed way for analysis. The theoretical beside the practical aspects has been improved (Chapter three) to take an advantage of a realistic data experiments (not analyzed) carried out with the Public Board for Agricultural Research (the party was made contract with) where the experiment has been analyzed (balanced and unbalanced factorials) to study the impact of the rice verities factor and also the distances of planting the rice for many characters of the rice crops, as well as study the impact factor rice varieties and planting dates factor on some of the qualities of the rice crop has implemented in Mashkhab station in the province of Najaf, and we used the methods of the analysis presented in addition to the proposed method. The conclusions have been reached regarding the moral of these factors and their interactions and to the possibilities that are available to use each method of analysis and the proposed method. The conclusions have been reached regarding the significant of these factors and their interactions and to the possibilities that are made available to use all method of methods of analysis and the suggested method was as as follows : 1 - perferred to use method frequencies the expected cell in the case of that the data is unbalanced and semi - proportional.2 - perferred to use method un weighted means in the case of that the data is unbalanced and disproportional.3 - perferred to use method of harmonic mean in the case of that the data is unbalanced and two case proportional and disproportional.4 - prefer to using the suggested method (median method ) in the event that the data is is unbalanced and disproportional.5 - prefer to data analysis unbalanced without trying to estimate missing values.

استخدام سلاسل ماركوف في التعرف على تعاقبات الحامض النووي DNA

Author name: زينب هاتف عباس الركابي
Supervisor name: ضوية سلمان حسن الجنابي | علي عبد الرحمن الزعاك
General topic: Administration and Economics
Specific topic: Operations Research
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: ان للحمض النووي الدنا DNA اهمية كبيرة وبالغة لكونه حاملا للمعلومات الوراثية وبالتالي فان دراسة تعاقبات الحمض النووي DNA سوف تعطينا انطباعا عن الصفات الوراثية للكائن الحي.وبالنظر لاهمية سلاسل ماركوف في تفسير وتحليل الكثير من الظواهر من حيث حيز التكرار، ول | The DNA has great importance because it is a hereditary information carrier. In view of the importance of markove's chains in explaining, and analyzing many of the phenomenae through succession, our research incentive has therefore came to represent markov chains applications on the DNA and considering the conditional transitional probabilities of these chains elements for its great importance in finding the hereditary genetics from DNA compositions. Markov chains has been implemented for the probable alignment of the first, second, third, fourth, and fifth orders. Three means depending on these alignments have been used. Experimentation on four of DNA chains was carried out for human growth hormone and relied on DNA succession for comparison between the three ways that nominate the chain of the greater probability to represent the gene.In addition, a program was created to code and translate the three models of the ORF for the DNA succession and the chains for the three models which start with the start code and end with the stop code. The program was written by Visual basic language to carry out these operations and to yeild sequence alignment between the human growth hormone gene and other chains.The program implemented DNA chains in which the nucleotide number is less than 3000 bases examplified by the human growth's hormone, mouse and chicken growth hormone.As well, entrotoxins produced by E.coli, salmonella , shigella representing prokaryotes were also included one of the most significant conclusion reached is that markov assessment method of calculated weights by means of Chi Square is the best mean for identifying genes from DNA sequences.

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

Author name: زينب مجبل ابراهيم
Supervisor name: لميعة باقر جواد الجواد
General topic: Administration and Economics
Specific topic: Operations Research
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: 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

دراسة تحليلية لتصاميم تجارب القطع المنشقة SPED والقطاعات المنشقة SBED مع تطبيق عملي == Analytic Study For Split Plot Experimental Design (SPED) And Split Block Experimental Design (SBED) With Practical Application

Author name: زينب فالح حمزة
Supervisor name: كمال علوان خلف المشهداني
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: ان فكرة القطع المنشقة كانت قد وجدت لتضيف الى مزايا ومواصفات التجارب العاملية فوائد تطبيقية تصب في تركيز وتحسين دقة واهمية دراسة تاثيرات العوامل والتفاعلات بينها كونها تحوي اكثر من مصدر للخطا العشوائي ونظرا لما نالته هذه الفكرة من توسع واضافات كثيرة في الج | The idea of split - plot had been found to add to the advantages of factorial experiments and specification of practical interest is in the focus and improving the accuracy and the importance of studying the effects of factors and interactions between them. they contain more than one source of random error because of the indiscriminate earned by the idea of expansion and additions in many theoretical and practical contribution to the diversity and evolution with approved design and since we have observed that the practical uses in our country , though many of it's but limited to the adoption of the idea of split - plot design or split - split only, and purpose of contributing to clarify and depend the understanding and importance in the practical aspects of these additions which has focused the aim of this research (thesis) to provide in depth analytical study of some of the designs , practiculary designs of split - plot and desins of split - Block and what could be concluded from the ideas of the designs that has practical benefits , especially in the agricultural field was taken as the theoretical aspects (models , plans , analysis ) to design of ,split - plots , split - plots systematic arrangement whole plots, split - plot in time & and analysis of Covariance and the design of split - Blokes and the designs of split - split plots & the design of combination between split - plots & split Block then the practical application had been don using The experiments in agricultural (including rice crop ,and crop of peas) Resulted modern & variety data for the year 2008 in the rice research station in Mashkhab in ALnajaf governorate in addition to data for chick pea crop obtained from the station of Rabiaa where the data were analyzed using (SAS - stetictical analysis system). the results of analysis showed that the variety Anbar 33 is the best compared to other varieties for rice crop , and the age 27 day is the best compared to other ages. The designs that have not been able to conducted, which is also not present previously in our country has been adopting the idea of simulation usin visual basic Program, as shown in the appendices ( program 1,2) done by the researcher deals the design of combination between the split _ plots and split Blocks compare it with _the design split _split plot - and the program no(2) that concerned designing split Blocks. The analysis Results for both designs performed to be used in agricultural experiment as it provides high accuracy.

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

Author name: زينب علاء حميد
Supervisor name: عبد الرحيم خلف راهي الحارثي
General topic: Administration and Economics
Specific topic: Operations Research
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: 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.

استعمال مباريات التطور التعاونية المقابلة في تحديد نقاط الجذب للمجتمعات مع تطبيق عملي == The Use of Cooperative Games Development In Determining The Corresponding Points of Attraction For Communities With A Practical Application

Author name: زينب عبد الحسين عبد الرزاق
Supervisor name: لميعة باقر جواد الجواد
General topic: Administration and Economics
Specific topic: Operations Research
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: في هذه الرسالة ومن خلال الفهم العام لنظرية الالعاب التطورية ( التي تعد من النظريات الحديثة ) القائمة على محاكاة المجتمعات في تطورها الديناميكي وصولا الى الامثلية في الاستراتيجيات بمرور فترة زمنية طويلة , ومهما طرات على المجتمعات من تذبذبات صائبة وخاطئة ف | In this letter and through the general understanding of Evolutionary game theory (which is one of the modern theories) based on the simulation of communities in the development of dynamic and down to the fitness of strategies over the long period of time, and whatever occurred in the communities swings right and wrong in the selection of strategies utensils should be points of the stability of these communities in the long run, and points of stability, this sometimes exhaust the points of great cross - matrix of payment, which is a magnet for society has been achieved and there is more than a magnet for the combined multiple identical (MPS) (multi - population symmetric games) through the employment of simulation method where generation vehicles heading y ?, x ? who represent the community first, second, as well as selecting values Al afteradp for the parameters (k_1, k_2, S_1, S_2), and assuming two functions Trabieitin f_2, f_1 To achieve this has been divided into the interval [ - 30.30] to eight spaces double points sample was assumed to points for summits local are ( - 15.15) and (15, - 15) and demonstrated that the stability, not necessarily to be points of great single, comprehensive, and it is this stability, the values of a great local to the matrix of pay rows and columns. This proved that the change in the field of the horizontal domain and vertical impact on the points of stability which could lead to changing the course of society, instead of heading towards the summit of Great overall edged heading toward points of great local flatter and Tvltaha, and demonstrated that the presence of the top super - local approach in the elevation of the summit of Great overall change the course of society. As in the application has reached the researcher to identify points of attraction between teaching in Iraq and the staff at the University of Baghdad and also for added degrees of years of service and responsibility to employees of the equipment of heavy engineering to find attractions to carry the burden of service for many years and done responsibly. And previous studies available to the researcher urged that the evolutionary model of the corresponding games has been limited to only together, so the focus was on mainstreaming the specimen to include the three communities have been reached to be through the theory of a simplified version of the graph (Graph Theory).

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

Author name: زهراء قاسم هاشم
Supervisor name: عبد الجبار خضر بخيت
General topic: Administration and Economics
Specific topic: Operations Research
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: 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)

استعمال الانتروبي مع طرائق اخرى في تقدير دالة بقاء توزيع كاما العام للسكان في العراق == Use The Entropy With Other Methods In Estimating The Survival Function of Generalized Gamma Distribution To The Population

Author name: رغدة زياد طارق العبيدي
Supervisor name: عمر عبد المحسن علي القيسي
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: تستخدم جداول الحياة في مجالات عديدة في البحوث الديموغرافية والصحية وتمثل مؤشرا هاما للوفاة في المجتمع. ويتم احتساب جداول الحياة من بيانات الوفيات لسنة معينة للمجتمع السكاني، لذا فهو يعبر عن حالة الوفاة للمجتمع.وهناك نوعين من جداول الحياة وهي : (جداول الح | Life tables used in many fields in the demographic and health research is an important predictor of death in population. Then, calculated life tables of mortality data for a particular year the population of the community, so it reflects the rate of death of the community in somehow. There are two types of life tables, called : (Complete Life tables) and were based on the age at death on the basis of single - year age groups (0,1, 2,3,..., 81+) and were usually obtained in a manner comprehensive survey or census in order to provide detailed information on the population. The second type called (Abridged life tables) were assumed from equal death rate for ages converged with each other and are therefore based on the age at death on the five - year age groups (0 - 1, 1 - 5, 5 - 10, 10 - 15,..., 80+) which is different from its predecessor and less accuracy than is obtained in a manner sample survey. In the absence of census of our beloved Iraq, where the last census was in (1997), so be getting the calculated probability of survival through accurate (survival function) within the life tables for single - year age groups was extremely difficult and mired with disorder problems you need to mathematical treatment in accordance with the distribution of probabilistic statistical but it's distributed data showed the distribution of the Generalized Gamma : (GG) with three parameters as the best fit of the data, with this distribution in turn includes the integration of (incomplete gamma function) is implicitly making it more difficult traditional appreciation. So two major goals were arise in this thesis.The first goal of a practical application goal, using (Sprague multipliers) to convert a five - year age groups into single age. The second goal of theory using the method of Principle of Maximizing Entropy : (POME) in assessing the function of survival and to deal and overcome the turmoil and volatility demographic data collected from (Iraq Household Socio - Economic Survey : IHSES II 2012). This thesis had studied the function estimating survival data mentioned above on two parts : the first part, parametric estimation methods which is the method of Principle of Maximizing Entropy : POME, the Classical method is the Maximum Likelihood : ML. The second part, has included nonparametric method to estimate survival function by nonparametric method (Kernel Smoothing) been used as (Gaussian function). The estimation methods were compared using statistical criteria are the root mean squares error (RMSE), and the average absolute percentage error (MAPE). Among the most important conclusions, was the preference for a ML method and kernel method when a simulation to get the proportions views of the probability distribution (GG) and in a manner Inverse Transformation Method : ITM only single - year age groups sized by (n = 81) and repeat the experiment (300) replicates. As well as to reach that way entropy is the best method dealt with five - year age groups, where in the case of single - year age groups, the nonparametric kernel was best in when the practical application part. Life tables using MORTPAK program as it has been considered survival function results (UN) calculated values real and comparing the methods of the three appreciation. One of the main recommendations, the use of the (POME) to overcome the turmoil of demographic data, especially a five - year age groups and the use of Sprague data conversion from five - year age groups to transactions single - year age groups and the use of nonparametric method of kernel to assess the function of survival of the single - year age groups and entropy for five - year age groups data.

تقويم بيانات الوفيات في العراق وتقدير بعض مؤشراتها == Evaluating Mortality Data In Iraq And Estimating Some Related Indices

Author name: رشا عادل سعيد
Supervisor name: بشرى علي يعقوب الجعفري
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: لقد اتسع نطاق الدراسات الاحصائية ليشمل العديد من الميادين والقطاعات ومن ضمنها قطاع السكان، حيث اهتم الباحثون بدراسة مشاكل التعداد والقياسات المتعلقة بقطاع السكان كالولادات والوفيات والهجرة، وذلك لما لها من اهمية كبرى في مجال الادارة والتخطيط.فجاء هذا ا | The scope of statistical studies has been extended to consist many sectors. One of these sectors is population studies.The researchers studied the problems of census , and data collection related to population (i.e. Births , deaths and migration) , which is considered of great importance in the field of planning , management and development studies. This study comes as a part of the studies focused on demographic characteristics and concentrated on mortality , which is often faced by the problems of incomplete and incorrect data , mainly the lack of mortality records specially in developing countries. The study focused on mortality data in Iraq during the period 1987 - 1997 , aiming at evaluating and estimating some of the related indices such as (life expectancy at birth , age - specific mortality rates , etc.).The study excluded the region of Kurdstan (Arbil , Dohok and Sulaymania) because this region was not included in 1997 census moreover the difficulties in obtaining registered deaths in this region since 1991. The study compares three methods for estimating infant and child mortality rates (i.e. Brass method , Feeney method for estimating infant mortality and Preston - Palloni method) the study concluded that Brass method is the most relevant for estimating infant and child mortality in the light of the hypotheses of each method and its characteristics and the needed data. By using 1997 census data in Iraq and depending on UN. Model for developing countries (general model) , the study achieved to the adjustment of mortality probability (Logit method). In dealing with mortality for (over 5 years old persons) , three methods were compared for estimating completeness of recorded deaths (i.e. Brass growth balance method , Preston - Coale method and Bennett - Horiuchi method) based on the hypotheses of each method and its characteristics and the needed data. It was found that there was no reason for preferring one method on another , therefore , the three mentioned methods were used depending on registered deaths (collected from Ministry of Health data) for the period 1987 - 1997. The study results showed that Brass growth balance method was not relevant for the studied mortality data in the Iraqi society. therefore , its results were neglected , and the results of mathematical mean of Preston - Coale method and Bennet - Horiuchi method were considered as representative of completeness of recorded deaths. It was found (0.725) for males and (0.845) for females.In order to estimate some mortality indices , bridged life tables were built for the years 1997 and 2002 for males and females in Iraq. The analysis showed the rise of life expectancy at birth about (1.2) years for males and (1.3) years for females during the above mentioned period.Finally , the study discuses its conclusions and recommendations.

دراسة نظرية وتطبيقية لشبكات بيرت الاحتمالية

Author name: ربى رشيد عبد الرحمن الجلبي
Supervisor name: ضوية سلمان حسن الجنابي
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: تعتبر شبكات الاعمال من الادوات المهمة في التخطيط والسيطرة على مراقبة تنفيذ المشاريع باقل كلفة ووقت ممكن اذا ما توفرت الموارد التي تغطي حاجة تلك المشاريع.ونظرا لاهمية موضوع شبكات الاعمال ارتاينا البحث فيه بهدف التوصل الى طريقة لحساب وقت انجاز المشروع الك | Networks are considers as the most important instruments in the planning are controlling probation of projects implementation with minimal cost and time if there are sufficient resources cover the need of these projects.And respect to the importance of the topic regarding networks, we saw the search in it so as to reach method for calculating time of implementation of the total project in Probabilistic PERT networks, which are different from PERT networks because each stage in Probabilistic PERT networks represent random variable which has certain probabilistic distribution. So, time of implementation of the project will be another random variable, while in PERT method the times being already specified for each stage. We shall calculating this time after finding the total probability function for networks of the project.Moreover, we shall perform striking the necessary time to doing PERT network by application Fulkerson method which depends on every possible investigations to perform the project’s stages, which concentrate on that which have the maximum possibility of an event, and so the Fulkerson method being approximation to that which depends upon the probability function, but we shall concentrate in our research on the probability function because it gives additional indicators to the performing time. This will appears as clear through comparing the results that we shall reach after application the two methods. Where this was applied practical in one of our productive enterprises and it is the public enterprise of leather industries.According to above cited, we divided a thesis into four chapters; the first, takes the introduction and the objective of the probabilistic PERT networks topic as well as topic’s background, while the second chapter takes the theoretical aspect of the topic that encompass displaying method of PERT and an analysis that depend upon beta distribution besides displaying the symbols used in Fulkerson’s method to finding the expected time for implementation of the total project and finding variance of time regarding the total implementation and then estimating the probability function to the project time. The third chapter takes an applied aspect of the topic, so after gathering data, we tested it for conformity goodness of fit and then, we calculated mean and variance of the time regarding project total performing according to PERT and Fulkerson methods, and then we have finding the mean using probability function after estimate it.The most important what we have reached from the conclusions and the recommendations we shall display it in the fourth chapter of the thesis

حول تصاميم القطع المخططة

Author name: داليا هشام عبد الرحمن الشيخلي
Supervisor name: عماد حازم عبودي
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: مما لا شك فيه ان للتجارب العاملية اهمية كبيرة في دراسة تاثيرات العوامل الرئيسية وتفاعلاتها، وتعد تجارب القطع الشريطية او المخططة Strip - plot Experiments او ما يسمى بتجارب القطاعات المنشقة split - Block Experiments احدى فروع او حالات التجارب العاملية حيث | There is no suspicion that the practical experiment have a great importance in studying the major factors and their activities ,and the Strip - Plot experiment or what it called Split - Block experiment considered as one of the practical experiments brunches where the steps are divided in the Analyzing Differentiation Diagram to three combinations , the first one is for the queues, the second one is for the colons, and the third one is for the experimental units which produced from crossing the queue with the colon with noticed that the horizontal and vertical strips should be in a vertical line with each other so there is no relation between their sizes. The levels of one factor normally distribute randomly over the strips of the queues and the levels of the other factor, and also randomly over the strips of the colons. By changing the randomization category (put the restrictions on the way of randomization) many kinds of designing the Strip - Plot appears. Hence, the aim of this research came to put the spot on these categories and put their mathematics sample, the statistical analyzing of each category, their usage’s, their characteristics, their features and their standard mistakes and to test the differences between the treatments average by using the method of Least Significant Differences. We cleared how to treat the problem of the one replication (because of loosing the mistakes) to test hypotheses by two methods. Finally we applying the kinds of the strip - plot designs practically standing on an experiment diagrams done in Abo Guraib Station yield that belong to Eebaa Center For Agricultural Researches. The program was written in ( Visual Basic ) language to make the statistic analysis for these experiments and applying practically the treatment of the repetition one.

تقلبات سعر صرف الدينار العراقي للمدة من عام 1996 لغاية منتصف عام 2005 والتنبؤ بسعره في المستقبل باستخدام سلاسل ماركوف == Fluctuating of The Iraqi Dinerexchange Rate Since 1996 Until Mid 2005 And Forecasting It In The Future By Using Markov Chains

Author name: خليل برهان الدين فرمان السعدي
Supervisor name: صباح منفي رضا الشمري
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: ان هذا البحث هو دراسة احصائية اقتصادية في مجال سعرالصرف بدراسته من عام 1996 لغاية منتصف عام 2005، ويتلخص بهذه العبارة (( الحاضر جني الماضي والمستقبل غرس الحاضر)) وهو محاولة متواضعة لبلورة هذا السعرفي اسلوب علمي احصائي، وكانت سلاسل ماركوف خير معبرعن ذلك | This research is considered as a first statistical and economic study in the field of Exchange rate during the period from 1996 till midd 2005. It could be summarized with this sentence (present is the fruit of the past and the future is the plantation of present). Markov chains was used as a scientific statistical method in forecasting process being one of the easiest models. When the data at present is represented in three conditions (i.e high, low, and stable) and between the past, present and future, it was possible to achieve the ideal method in the analysis by using Maximum Likelihood method and Ordinary Least Square method in estimating transitional probabilities matrix. The probability values have been put for all stages and for both methods in one table. The period was divided to three phases according to the political circumstances in Iraq in addition to general phase. The results of the matrices were clean and independent when multiplied by (n) times as shown in attached annexes and in stationary distribution vector, when the probability values were stable for the three cases in definite number and for each phase. The conclusions achieved in the third phase and the possible study to rise Iraqi Diner value to a certain level has been coincided. Finally , the study submitted some useful recommenda - tions.

استخدام البرمجة الديناميكية لحل مشكلة جدولة انتاج متعدد لماكنة منفردة لكلفة خزين متغيرة == Using Dynamic Programming To Solve The Multi - Item Single Machine Scheduling Production Problem For Variable Inventory Cost

Author name: حيدر عدنان امير
Supervisor name: لميعة باقر جواد الجواد
General topic: Administration and Economics
Specific topic: Operations Research
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: الغرض من هذا البحث هو تطبيق اسلوب البرمجة الديناميكية Dynamic Programming لتخطيط الانتاج لمنتج واحد او اكثر بواسطة ماكنة واحدة ولعدة انواع من دوال الكلفة الخطية والمقعرة والمحدبة. سوف نهتم بتخطيط الانتاج لفترة زمنية مستقبلية تسمى ( فترة التخطيط ) Planning | The purpose from this research is to apply one of operations researches manners and its Dynamic Programming manner, to planning for one manufacturer or more and for many types from linear cost functions, convex and concave which are manufacture by lonely machine.We will pay attention in manufacturing planning for future chronological period named Planning Horizon for a machine is manufacturing many manufacturers with a machine changeover cost, where in this period the ordering average is change on the manufacturer, we’ll suppose too that the chronological space is divided to periods , the planning problem is happening by determining manufacturing average for every period in Planning Horizon , for knowing the ordering on every period is known but it’s not constant from each period to other which give it the Dynamic Form.In the research aim about how we planning for manufacturing period, so it will be study different models for cost function in one manufacturer case or more and apply an algorithm for each case and after that programming some of these algorithms to determining the best Planning Horizons where at them wholly cost function is might less.This subject consider as one of the important subjects in manufacturing operation fields, industrial operations, geometric operations and etc …For the important of leather industries, this subject apply on the factories of the Common Company of Leather Industries and that is happen by planning for outputting and stock to find less possible cost and the choice happen for four factories from the company and it’s : 1. Baghdad shoes factory ( Bata previously )2. kufa factory ( sporty shoes )3. Bags factory 4. Leather clothes factory And this by forming models to Dynamic Programming and it’s : 1. forward algorithm without disability 2. forward algorithm with disability 3. backward algorithm allow disabilityIt’s developing by the researcher to apply it in the multiple outputting and solve them and taking the results through a computer program written by the researcher for every model in Visual Basic Language.

استعمال بعض تصاميم التجارب العاملية والعاملية المتداخلة بالقياسات المكررة على مرض الثلاسيميا في محافظة واسط == Use Some Factorial Design of Experiments And Nested - Factorial By Repeated Measurements On Thalassemia In Wasit Governorate

Author name: حيدر رائد طالب
Supervisor name: قيـس سبع خماس
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: انصب هدف الرسالة في امرين على درجة من الاهمية وهما اولا دراسة تحليلية لطبيعة التجارب بالقياسات المكررة لعدة تصاميم والتركيز على التجارب العاملية والعاملية المتداخلة وبناء النماذج الرياضية الخطية لهذه التجارب الذي يعتمد علية التحليل. لقد تم استعمال الط | Focused message in a two objective on the degree of importance and them first analytical Study to the nature of repeated measurements experiments for several designs and focus on the Nested - Factor Experiments and build linear mathematical models for these experiments upon which the analysis. It has been used several methods parametric to analysis these types of designs. which are difficult to analyze in sometimes because of the not provide conditions analysis of variance for repeated measurements experiments. The second objective of the message is application this kind of experience in the medical sector by studying a particular phenomenon characterized by a repeated measurements represented Thalassemia in Wasit province. Where he was studying three types of experiments the existence of a repeated measurements It is experiments with a one factor and have a repeated measurements on the same element, Factorial Experiment qxp repeated measurements on one factor, and Nested - Factorial experiment repeated measurements on one factor. As well as the use of methods of transfer to ranks (Rank Transformation) as one of the solutions that have made conditions analysis of variance to experiments measurements repeated of (distribution Normal random and independent for experimental error, homogeneity of variances, the lack of correlation between the averages and variances, spherical). Satisfactory because the transfer to ranks makes the data on the most homogeneous and normal, although we have identified a condition analysis of variance exclusively for the purpose of comparison by the value of the P - Value. The data can be described about Thalassemia in Wasit as follows : were assessed Standards quantities of iron (Fe) in the letter, groups this data classified into two groups, the first group included 20 patients (10 males, 10 females) and who have been subjected to the first chemotherapy (axja) by mouth for four treatment cycles (treatments) of each period lasts 30 days , and the second group included 20 patients (10 males, 10 females) who were exposed to second chemotherapy (Desferal) by injection into the skin or muscle of four treatment cycles (treatments), where each treatment cycle lasts 30 days. the most important conclusions that have been reached is that the Data Transformation by ranks led to the provision of analysis of variance conditions for experiments repeated measurements distribution the normal errors and homogeneity of variances and correlation between mean and variance, as well as a spherical condition. Through the four applications we believe that giving the first dose of the drug to patients has led to high amounts of iron to patients over time and this type of treatment is used when high amounts of iron ratio. As well as when you give the second dose of the drug to patients has led to high amounts of iron to patients over time, but at rates lower than the first treatment and this type of treatment is used when a weak proportion of iron in the blood of the patient.

مقارنة بين طرائق تقدير انحدار الحرف العامة في معالجة مشكلة التعدد الخطي شبه التام مع تطبيق عملي == A Comparisons Among The Generalized Ridge Regression Methods of Estimators Under Multicollinearity Problem With A Praxis

Author name: حنين مراد يوسف الصالحي
Supervisor name: سجى محمد حسين الهاشمي
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: يلقى موضوع خرق احد فروض الانحدار اهتماما واسعا وواضحا في معظم الدراسات لذلك تنبع اهمية هذا البحث من خلال الكشف عن احد هذه الفروض ومعالجتها والمتمثلة بـ وجود علاقة خطية بين اثنين او اكثر من المتغيرات التوضيحية والتي تدعى بمشكلة التعدد الخطي (Multicollinea | The violation of regression assumptions is one of the interesting topics in many fields. This thesis deals with multicollinearity problem by using some of generalized ridge regression methods (GRR, MJR, GJR, GL, AUGRR, and AUGL) as well as our proposed method (Almost unbiased Generalized Jackknife Ridge) (AUGJR). In addition, these methods are compared with parameter (k) in ridge and parameter (Liu D). These methods are evaluated based on the mean squared error (MSE) to obtain the best method of these methods with the suitable parameter.To evaluate these methods, we use simulation studies by using the R statistical program. Five variables are simulated with different sample sizes (n=15,20,60,300), different variances (0.16,0.13,0.18) and different correlation coefficients (r=0.16,0.13 and 0.18) with (s=10 and 2). The results show that AUGL, AUGJR and AUGRR are the best methods in terms of the MSE. The differences are very small among them. The methods are also evaluated based on real data example (Rail transport for the passengers and cargo), which is obtained from Iraqi Ministry of Planning.We first detected the problem of multicollinearity by using the Variance Inflation Factor (VIF) and Condition Index (CI). Then, we build a model of revenue for transportation after they have been estimating its features at the best methods.

افضل طرائق المعاينة في تقدير اعداد النخيل في محافظة البصرة == Optimum Sampling To Estimate Date Palm In Basrah Governorate

Author name: حنان سعيد مالك الراوي
Supervisor name: رفعت لازم مشعل الخميسي | عدنان شهاب حمد
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: مما لاشك فيه ان لكل اسلوب من اساليب المعاينة مزايا ومبررات في استخدامه، وغالبا ماترتبط عملية اختيار اسلوب المعاينة بجانبين اساسيين، اولهما معيار التجانس بين المفردات سواء على المستوى الكلي ام على مستوى اجزاء(او مجاميع) من المجتمع، وثانيهما الامكانات المتا | There is no doubt that each technique of sampling techniques has advantages and reason for using it, and mostly the correlation of choosing sampling technique with a essential two sides, first of them is the standard of homogenous between units as for all population, and the second one is the abilities that are available to fulfills survey. And in using Stratified Random Sampling Technique in evaluating the suitable population to apply an important role to get a high efficiency estimator to compare with other Sampling design. As the target of this searching is to get the best ways that increase the accurate estimation of the Date Palms number in Basrah governorate and in using different kind of sampling estimator, the comparison has been done between the mean variance of Simple Random Sampling and the mean variance of the Stratified Random Sampling, and it is clear in the comparative results hat using Stratified Random Sampling give the best estimation. The determination of strata boundaries (strata formation) have interested role in obtaining efficient estimators, several strategies of strata formation were constructed, it is proved that the approximated frequency strategy at ?= ½ is the most efficient, researchers discussed developing this strategy through using different values of (?), or different sample allocations. In this searching three approximately frequency had been applied , and to divide the population into strata and point out the optimum limit strata, and the sample allocation has been determined by using Neyman distribution. And it is clear in the result that using the approximated frequency is the nearest and efficient to estimate the Date Palms number in Basrah governorate, by counting the Stratification mean variance and the stratification mean for the three approximated frequency. And the reason to know wither the Stratified Random Sampling is efficient and better than the Simple Random Sampling in evaluating the Date Palms number the experiment of the hypothesis between two population has been used, the results of that experiment show the difference between the two means that lead to reject the Null hypothesis and to accept the Alternative hypothesis, according to this the search recommended to use the Stratified Random Sampling according to the new divided stratification by using frequency, taking into consideration using Neyman distribution o determine sample size and sample allocation

التحليل الاحصائي لتجارب القياسات المكررة للبيانات المصنفة == The Statistical Analysis For Experimental The Categorical Data of Repeated Measurement

Author name: حلا كاظم عبيد الصبيحاوي
Supervisor name: سجى محمد حسين الهاشمي
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: حيث تم استعمال اختبار (Cochran, Mc Nemar, Ireland & Kullback, Stuart, Bhapkar, Ireland & Ku & Kullback) على بيانات ذات معالجتين وكل معالجة بمستويين المتمثلة ببيانات مرض ضغط الدم ولدوائين وكل دواء بمستويين (ملائم وغير ملائم) ومن خلال الجانب التطبيقي تم الو | In this dissertation the study have concentrated on the use of repeated measurements tests of catcorigal data, where we used (Cochran, Mc Nemar, Ireland & Kullback, Stuart, Bhapkar, Ireland & Ku & Kullback) tests on two treatments data, and every treatments with two levels which represent raised blood pressure data, and for two medications, each medication with two levels (appropriate and inappropriate), through the practical aspect, we concluded that the ratio of response for the two medication are the same. Also we used (Ireland & Ku & Kullback, Bhapkar, Stuart) tests on data with two treatments, each treatment has more than two levels that represent data of fifth grade (High school) for Arabic text book through years (2001 - 2004) in sumer high school, in which the first treatment represents the students grades in mid term exam, and the second treatment represented the student grades in final exam, through the practical aspect we gained an equivalent results in the previously mentioned methods (in which the students levels in mid term exam equivalent to that in final exam). We also used (Ireland & Kullback, Cochran) tests and weighted least squares (WLS) tests on three treatments data in which every treatment has two levels that represents data of student in the same grade, and in the same years for English text book in which the first treatment represents the first term average, and the second treatment represents the student's grade in mid year, and the third treatment represents the average of second term. And for two levels (Pass and failed), through the applicative of these test on these data we concluded that the level of any given student in first term is equal to the level in mid year and it's also equal to that in second term.

مقارنة طرائق تقدير دالة البقاء لتوزيع لوماكس باستخدام عينات مراقبة من النوع الثاني

Author name: حلا سلمان فرحان
Supervisor name: صباح هادي عبود الجاسم
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: في هذه الرسالة تم تقدير دالة البقاء لتوزيع لوماكس اخذين بنظر الاعتبار وجود عينات مراقبة((Censored Data من النوع الثاني في حالة توافر معلومات اولية عن المعلمات بشكل دالة احتمالية اولية مشتركة لكل من معلمتي الشكل والقياس,حيث تم افتراضها حسب اسلوب الباحث(Jef | In this study have been estimated the survival function to Lomax distribution considering there was censored data (second Type) just in case if a primitive information were available about the indications as mutual primitive probability function for both : indications form & measure which assumed in order to method of the searcher (Jeffry) and also squared error loss function). So measured estimated pez S*(t) for survival function S (t) is the conditional expectation function S*(t) =E[S (t)/X].It has been used approximated methods to measure them because It is hard : to measure the complementary of numerator and denominator in a mathematics form by using Bayes method. One of these methods is the method of the searcher ( Lindley) while the other method was return to ( Tierrney and Kadon).In addition to methods formerly to estimate the survival function; the searcher has used the Shrinkage method. While she used the maximum likelihood method as a usual method for those which did not depend on the primitive information because the estimated thing had fixed quality.So, all this to make the comparison between these methods and the oldest one through simulation style by Mont - Carlo to get new estimation which carried the wanted qualities in the perfect estimated to get specific results : to choose the suitable estimation method.The searcher hade made the bayes (lomax distribution survival function) as the lindley manner was the best among the other manners to estimate lomax distribution survival function ,on general ;while the manner of the maximum likelihood method was the best manner among to other estimated manners for tiny simple size on private.

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

Author name: حسنين حامد احمد الطائي
Supervisor name: مروان عبد الحميد عاشور
General topic: Administration and Economics
Specific topic: Operations Research
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: 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.

استعمال خوارزمية البحث المتناغم المركبة لحل مسالة التخصيص التربيعية مع تطبيق عملي == Using Combinatorial Harmony Search Algorithm For Solving Quadratic Assignment Problems With Practical Application

Author name: حسن عبد الستار ابراهيم
Supervisor name: عبد المنعم كاظم حمادي الشكري
General topic: Administration and Economics
Specific topic: Operations Research
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: يتضمن هذا البحث ثلاث مراحل اساسية المرحلة الاولى تضمنت دراسة موسعة لمسالة التخصيص التربيعية (Quadratic Assignment Problem) من حيث الصيغ وطرق الحل والحدود الدنيا لدالة الهدف وبعض التطبيقات المهمة للمسالة والمرحلة الثانية تتضمن بناء خوارزمية لحل المسالة , ا | This research includes three Basic phases the first phase included an extensive study of the Quadratic Assignment Problem (QAP) in the formulas and methods of solution and Lower Bound of objective function and some important applications of the Problem and the second phase includes construction of algorithm for solving the Problem, used Harmony Search algorithm in this research but added the improvement Procedures to increase the Performance of algorithm and speed up access to the optimal solution of the problem, The algorithm consists of two phases, the first phase will improve all the existing solutions in the Harmony Memory use some improvement measures is the property of Crossover used in genetic algorithm and also guided search to reduce the objective function, the second phase will depend on the Procedures of the Harmony search algorithm (HS) but using a new Improvise, The algorithm has proven its efficiency in solving the problem is resolved (15) standard problem from the special library of Quadratic Assignment Problem (QAPLIB), and compare the results with the local search algorithm (LS), Tabu search (TS), Simulated annealing (SA) after solving each problem (25) times and record the results of the algorithm shown open her with total access to the optimal solution (282) of the total (375) repetition of the test as the total reached the local search algorithm (2) Simulated annealing algorithm (117) and Tabu search algorithm is (174). The third phase of the research included the use of the (QAP) in the process of designing websites towers networks of the Ministry of Oil to connect the gas stations in Baghdad province to determine the main towers of the project where the use of the Combinational Harmony search algorithm in resolving the Problem after resolving the problem was determine the location of towers , sites first tower area (Yarmouk) as the second tower (Sadr City) and the third tower in the area (Karada) and fourth in the Tower (Adhamiya) and then use the Generalized Assignment model in distribution subsidiary turrets to The main tower and the new design of the towers the effectiveness of Quadratic Assignment problem in organizing sites.

مقارنة فترة الثقة مع الفترة البيزية للتركيبة الخطية لمتوسطات عامل التداخل مع تـطبيق عملي == A Comparison of Confidence Interval With Bayesian Interval For The Linear Compination of Nest Factor Means (With Application)

Author name: حسام موفق صبري الدليمي
Supervisor name: اموري هادي كاظم الحسناوي
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: تعد دراسات المقارنة بين طرق تقدير المعلمات من الدراسات المهمة التي تاخذ حيزا واسعا في البحوث الاحصائية، لذلك تهدف هذه الدراسة الى اجراء مقارنة من خلال الفترات بين فترة الثقة والفترة البيزية للتركيبة الخطية لمتوسطات عامل التداخل في تصميم متداخل متزن لمرح | A Comparison studies among parameters estimation approaches are important studies that take a large space in statistical searches. So that the purpose of this study is to make a comparison through the intervals between the confidence interval and the Bayesian interval for linear combination of nest factor means in a two stage balanced nested design.The confidence interval was found by using an advance approach in inference called (Mixed Inference), and the Bayesian interval was found by using another approach in inference called (Bayesian Inference), then a comparison was happened between the two intervals (obviously the two kinds of inference).We apply this comparison on a real data experiment represent weights of vetch planet in (1998), and by using simulation. The results of the real data experiment and simulation shows an important conclusion which said that the confidence interval for linear combination of nest factor means is better than the Bayesian interval of the same linear combination for any suggestion confidence coefficient.Finally, An assumption study established to know the causes that leads to that important conclusion

تحليل التباين متعدد المتغيرات لتصميم القطع المنشقة - المنشقة == Multivariate Analysis of Varaince For Split - Split Plot Design

Author name: حسام عبد الرزاق رشيد البكري
Supervisor name: ظافر حسين رشيد النجار
General topic: Administration and Economics
Specific topic: Statistics
Degree: Master
University: University of Baghdad - Faculty Of Administration And Economics - Department Of Statistics
Language: Arabic
University location: Baghdad
First pages:
Abstract: This research work is a study of multivariate analysis of variance model (MANOVA) for the design of split - split plot to a complete randomized block. As it is an important method for determining whether the response variables are influenced with each other or in other words whether the correlation between the variables of a force such that it influence the decision taken concerning the applied hypothesis. When we don’t ignore the relationships which are created between the responses variables lead us to generalize the tests in the univariate analyses about the means of normal population to be changed to tests involving mean vectors responses taken from multivariate normal population. Ignoring the existing relationships between variables lead us to untrue conclusions, so in doing the (MANOVA) gives us a full picture of the experimental factors and their interaction in the experiment as a whole. The concentration on doing the (MANOVA) should not be at the expense of the study of the univariate analysis. So the research work involves the problem of heterogeneous in sub - sub plot variances, which is considered one of the important problems put forward by other researchers which may limit his work in special procedure. We are interested in solving this problem by using a univariate analysis procedure after splitting the error of sub - sub plot and then finding the standard deviation used in comparison testing between about the third factor (c). Then comparing them with the standard deviation used, if we assume the existence of homogeneity in variances of sub - sub plot.
1 ... 8 9 10 11 12 ... 22