Preferred Language
Articles
/
jcofarts-1026
طريقة عمل قالب رملي معالج مع مادة الرزن لإنتاج مصبوبات برونزية
...Show More Authors
أن استخدام طريقة الشمع المفقود و الصب بالرمل كان ولا يزال ، قديماُ و تقنياته قديمة وغير مطورة لذا تم التركيز على طريقة الصب بالرمل الذي أعتاد الحرفيون ، غالباً على أستخدامه لسهولة عمله وتدني الكلفته ، ولكن تبقى هذه القوالب محدودة الإمكانيات و كفاءتها محدودة و تنهدم بسهولة ولا يمكن نقلها أو تحريكها من مكان لآخر .ولكن باستخدام مادة البولستر رزن كرابط مع رمل المقالبة هو العنصر الجديد الذي سيحسن كثيراً من أداء هذه القوالب ويمنح الرمل المعزز بالرزن قوة عالية إذ يمكن نقله و تحريكه من دون أن ينهدم و كذلك تحسين سطح المسبوكة البرونزية وكفاءة القالب ، الذي هو موضوع بحثنا هذا
 
View Publication Preview PDF
Quick Preview PDF
Publication Date
Fri Feb 08 2019
Journal Name
Journal Of The College Of Education For Women
علاقة عمل المرأة بالترابط الأُسري
...Show More Authors

The significance of this research lies in revealing the actual role of the range of
the effect of women's participation in family life. Both the historic and the
conclusive curriculum were used. The researcher was able to achieve several
results; one of the important of them is the existence of the obstacles that working
women face in life, though they do not stop the woman and her work.

View Publication Preview PDF
Publication Date
Sun Mar 12 2017
Journal Name
Al-academy
the director and the technique of theatrical extemporization
...Show More Authors

Extemporization is the ability of the actor to reflect his internal being. It gives a sort of confidence and an ability to show the personal countenance of the role away from tension and rigidity. By extemporization, it is possible to deal with and criticize the real living life so it is an intellectual, emotional, sensual, and perceptive process connected with the psychological energy and the emotional memory and all this goes under the control of the director and his instigations and instructions depending on what the text involves of intellectual, social and psychological motivators so it primarily depends on talent, chance and discussion. The research involves four chapters; the first contains the problem

... Show More
View Publication Preview PDF
Publication Date
Mon May 01 2006
Journal Name
أثر استعمال طريقة التعلم التعاوني في تحصيل طلاب الصف الخامس الأدبي في مادة قــواعــد اللغــة العربيـــة
أثر استعمال طريقة التعلم التعاوني في تحصيل طلاب الصف الخامس الأدبي في مادة قــواعــد اللغــة العربيـــة
...Show More Authors

Publication Date
Mon Dec 30 2002
Journal Name
Iraqi Journal Of Chemical And Petroleum Engineering
استخدام نفايات الالمنيوم كمرسب مساعد مع الشب في محطات التصفية
...Show More Authors

View Publication Preview PDF
Publication Date
Fri Apr 01 2016
Journal Name
Journal Of Economics And Administrative Sciences
التنبؤ بقيم السلاسل الزمنية بأستعمال أنموذج (ARMAX) مع تطبيق عملي
...Show More Authors

Abstract :

          Researchers have great interest in studying the black box models this thesis has been focused in the study one of the black box models , a ARMAX model which is one of the important models and can be accessed through a number of special cases which models (AR , MA , ARMA, ARX) , which combines method of the time series that depend on historical data and and regression method as explanatory variables addition to that past errors , ARMAX model importance has appeared in many areas of application that direct contact with our daily lives , it consists of constructing ARMAX model several traditional stages of the process , a iden

... Show More
View Publication Preview PDF
Crossref
Publication Date
Tue Dec 02 2025
Journal Name
Political Sciences Journal
علاقة الحكومة المركزية مع حكومة إقليم كردستان بعد انتخابات 2010
...Show More Authors

View Publication
Publication Date
Wed Dec 18 2019
Journal Name
Baghdad Science Journal
A Modified Approach by Using Prediction to Build a Best Threshold in ARX Model with Practical Application
...Show More Authors

The proposal of nonlinear models is one of the most important methods in time series analysis, which has a wide potential for predicting various phenomena, including physical, engineering and economic, by studying the characteristics of random disturbances in order to arrive at accurate predictions.

In this, the autoregressive model with exogenous variable was built using a threshold as the first method, using two proposed approaches that were used to determine the best cutting point of [the predictability forward (forecasting) and the predictability in the time series (prediction), through the threshold point indicator]. B-J seasonal models are used as a second method based on the principle of the two proposed approaches in dete

... Show More
View Publication Preview PDF
Scopus (1)
Scopus Clarivate Crossref
Publication Date
Mon Jun 22 2020
Journal Name
Baghdad Science Journal
Splitting the One-Dimensional Wave Equation. Part I: Solving by Finite-Difference Method and Separation Variables
...Show More Authors

In this study, an unknown force function dependent on the space in the wave equation is investigated. Numerically wave equation splitting in two parts, part one using the finite-difference method (FDM). Part two using separating variables method. This is the continuation and changing technique for solving inverse problem part in (1,2). Instead, the boundary element method (BEM) in (1,2), the finite-difference method (FDM) has applied. Boundary data are in the role of overdetermination data. The second part of the problem is inverse and ill-posed, since small errors in the extra boundary data cause errors in the force solution. Zeroth order of Tikhonov regularization, and several parameters of regularization are employed to decrease error

... Show More
View Publication Preview PDF
Scopus (4)
Crossref (1)
Scopus Clarivate Crossref
Publication Date
Sat Jun 01 2013
Journal Name
Journal Of Economics And Administrative Sciences
Comparison Ridge regression method with some classical methods to estimate the parameters of Lomax distribution by simulation
...Show More Authors

Abstract

In this research provide theoretical aspects of one of the most important statistical distributions which it is Lomax, which has many applications in several areas, set of estimation methods was used(MLE,LSE,GWPM) and compare with (RRE) estimation method ,in order to find out best estimation method set of simulation experiment (36) with many replications  in order  to get mean square error and used it to make compare , simulation experiment  contrast with (estimation method, sample size ,value of location and shape parameter) results show that estimation method effected by simulation experiment factors and ability of using other estimation methods such as(Shrinkage, jackknif

... Show More
View Publication Preview PDF
Crossref
Publication Date
Fri Jan 01 2021
Journal Name
Journal Of Economics And Administrative Sciences
Comparison Between Maximum Likelihood and Bayesian Methods For Estimating The Gamma Regression With Practical Application
...Show More Authors

In this paper, we will illustrate a gamma regression model assuming that the dependent variable (Y) is a gamma distribution and that it's mean ( ) is related through a linear predictor with link function which is identity link function g(μ) = μ. It also contains the shape parameter which is not constant and depends on the linear predictor and with link function which is the log link and we will estimate the parameters of gamma regression by using two estimation methods which are The Maximum Likelihood and the Bayesian and a comparison between these methods by using the standard comparison of average squares of error (MSE), where the two methods were applied to real da

... Show More
View Publication Preview PDF
Crossref