Preferred Language
Articles
/
jeasiq-1409
مقارنة طرائق تقدير معلمات توزيع كاما ذي المعلمتين في حالة البيانات المفقودة باستخدام المحاكاة
...Show More Authors

The estimation of the parameters of Two Parameters Gamma Distribution in case of missing data has been made by using two important methods: the Maximum Likelihood Method and the Shrinkage Method. The former one consists of three methods to solve the MLE non-linear equation by which the estimators of the maximum likelihood can be obtained: Newton-Raphson, Thom and Sinha methods. Thom and Sinha methods are developed by the researcher to be suitable in case of missing data. Furthermore, the Bowman, Shenton and Lam Method, which depends on the Three Parameters Gamma Distribution to get the maximum likelihood estimators, has been developed. A comparison has been made between the methods in the experimental aspect to find the best method through simulation by using the Monte Carlo Method. Several experimentations have been made by using the important statistical measure: Mean Square Error (MSE).

 

Crossref
View Publication Preview PDF
Quick Preview PDF
Publication Date
Tue Mar 03 2009
Journal Name
Journal Of Economics And Administrative Sciences
Comparison of repetitive estimation methodsSelf-data
...Show More Authors

In this study, we review the ARIMA (p, d, q), the EWMA and the DLM (dynamic linear moodelling) procedures in brief in order to accomdate the ac(autocorrelation)  structure of data .We consider the recursive estimation and prediction algorithms based on Bayes and KF (Kalman filtering) techniques for correlated observations.We investigate the effect on the MSE of  these procedures and compare them using generated data.

View Publication Preview PDF
Crossref
Publication Date
Fri Jul 17 2026
Journal Name
Tikrit University Journal For Rights
مصاريف الخصومة "دراسة مقارنة"
...Show More Authors

View Publication
Publication Date
Fri Feb 08 2019
Journal Name
Iraqi Journal Of Laser
Random Number Generation for Quantum Key Distribution Systems Based on Shot-Noise Fluctuations in a P-I-N Photodiode
...Show More Authors

A simple setup of random number generator is proposed. The random number generation is based on the shot-noise fluctuations in a p-i-n photodiode. These fluctuations that are defined as shot noise are based on a stationary random process whose statistical properties reflect Poisson statistics associated with photon streams. It has its origin in the quantum nature of light and it is related to vacuum fluctuations. Two photodiodes were used and their shot noise fluctuations were subtracted. The difference was applied to a comparator to obtain the random sequence.

View Publication Preview PDF
Publication Date
Thu Dec 01 2016
Journal Name
Journal Of Economics And Administrative Sciences
Organizational Ethnography and its Reflection in the Resonant LeadershipCase study at the University of Kufa
...Show More Authors

ABSTRACT

The purpose of this research is to investigate the relationship between organizational ethnography and resonant leadership in the University of Kufa, importance of research includes rare of studies that investigated the relationship between organizational ethnography and resonant leadership. Moreover, it comes as an attempt to reduce or bridge the knowledge gap between the variables of the research. As well as try to put the right foundations and appropriate for industry leaders of various Iraqi organizations aimed at profit or service. Based on the random sampling, 450 questionnaires were distributed to employees at the University of Kufa. Only 392 questionnaires were returned. Out of which 104 questionnaires we

... Show More
View Publication Preview PDF
Crossref
Publication Date
Sat Dec 01 2018
Journal Name
Al-khwarizmi Engineering Journal
Investigation of Load and Pressure Distribution on Wing with Wake Rollup for Low Speed Aircraft
...Show More Authors

The presented work shows a preliminary analytic method for estimation of load and pressure distributions on low speed wings with flow separation and wake rollup phenomena’s. A higher order vortex panel method is coupled with the numerical lifting line theory by means of iterative procedure including models of separation and wake rollup. The computer programs are written in FORTRAN which are stable and efficient.

      The capability of the present method is investigated through a number of test cases with different types of wing sections (NACA 0012 and GA(W)-1) for different aspect ratios and angles of attack, the results include the lift and drag curves, lift and pressure distributions along the wing s

... Show More
View Publication Preview PDF
Publication Date
Sun Jan 01 2006
Journal Name
Journal Of Educational And Psychological Researches
المسرحية بين النقل التلفزيوني والتسجيل في الأستديو (دراسة مقارنة)
...Show More Authors

اهمية البحث والحاجة اليه :

            في بداية ظهور التلفزيون كانت البرامج المقدمة تعتمد على المنوعات والمسرحيات المنقولة من المسرح . وقد استفاد التلفزيون من الفنون التي سبقته مثل المسرح فنرى ان :

" محطات التلفزيون بادرت بتسجيل المسرحيات المتعددة لتملأ بها ساعات الارسال " [1]

            وكذلك

... Show More
View Publication Preview PDF
Publication Date
Wed Mar 20 2019
Journal Name
Al-khwarizmi Engineering Journal
Design and Simulation of Closed Loop Proportional Integral (PI) Controlled Boost Converter and 3-phase Inverter for Photovoltaic (PV) Applications
...Show More Authors

This research deals with the design and simulation of a solar power system consisting of a KC200GT solar panel, a closed loop boost converter and a three phase inverter by using Matlab / Simulink. The mathematical equations of the solar panel design are presented. The electrical characteristics of the panel are tested at the values ​​of 1000  for light radiation and 25 °C for temperature environment. The Proportional Integral (PI) controller is connected   as feedback with the Boost converter to obtain a stable output voltage by reducing the oscillations in the voltage to charge a battery connected to the output of the converter. Two methods (Particle Swarm Optimization (PSO) and Zeigler- Nichols) are used for tuning

... Show More
View Publication Preview PDF
Crossref (6)
Crossref
Publication Date
Sun Jun 01 2008
Journal Name
Journal Of Economics And Administrative Sciences
الثغرات التشريعية والمشاكل الفنية في تنفيذ الأمر الخاص بالاستقطاع المباشر لضريبة الدخل
...Show More Authors

تزايد اهتمام الحكومات باختلاف أنظمة الحكم فيها والأفكار السياسية التي تؤمن بها، بالضرائب كأحد أدوات السياسة المالية، تسعى إلى أن تحقق من خلالها أهداف اقتصادية واجتماعية وسياسية فضلا" عن الأهداف المالية، إذ إن السياسة الضريبية تصاغ أهدافها باتساق وانسجام مع أهداف السياسة الاقتصادية بشكل عام، و إنما كانت الضريبة عام، ولما كانت الضريبة على هذا القدر من الأهمية فانه لم يكن مستبعدا" أن تحظى بعناية مشرعي ا

... Show More
View Publication Preview PDF
Crossref
Publication Date
Wed Sep 01 2010
Journal Name
Journal Of Economics And Administrative Sciences
المحاسبة الإدارية الشاملة حقيقة التطور في ظل التقدم العلمي ومفهوم الذكاء الاصطناعي
...Show More Authors

خضعت المحاسبة الإدارية إلى هيمنة المحاسبة المالية عليها اثر ظهور القوائم المالية المدققة في بدايات القرن الماضي الناتجة من ظهور المنظمات المنظمة للمهنة وما رافق من إلزام الشركات بإعداد التقارير المالية من الحسابات المالية وفقاً للمبادئ المحاسبية المقبولة قبولاً عاماً والتي أثرت في قيمة المعلومات المقدمة من قبل المحاسبة الإدارية مما أدى إلى إن تصبح تلك المعلومات غير ملائمة للاستخدام الإداري وهو ما ا

... Show More
View Publication Preview PDF
Crossref
Publication Date
Tue Jun 01 2010
Journal Name
Journal Of Economics And Administrative Sciences
قياس وتحليل الصدمات النقدية في الاقتصاد العراقي للفترة 1980-2005 دراسة قياسية
...Show More Authors

تعرض الاقتصاد العراقي إلى صدمات نقدية شديدة بسبب الظروف السياسية والاقتصادية غير المستقرة والمتمثلة بشكل أساسي لخوض العراق حرب طويلة الأمد مع إيران في الثمانينات وحربين مدمرتين مع الولايات المتحدة الأمريكية فضلاً عن فرض الحصار الاقتصادي طيلة ثلاثة عشر عاما ً .

وتهدف هذه الدراسة إلى قياس وتحليل الصدمات النقدية التي تعرض لها الاقتصاد العراقي في فترة الثمانينات والتسعينات وبداية هذا القر

... Show More
View Publication Preview PDF
Crossref (1)
Crossref