Comparative clinical evaluation of ketotifen and montelukast sodium in asthmatic Iraqi patients
(8)
(3)
Publication Date
Mon Jul 01 2013
Journal Name
Political Sciences Journal
Towards Promoting Political Participation of Female - University Students - Field Study on Al-Quds Open University Female - Students - Rafah
نحو تعزيز المشاركة السياسية للطالبات الجامعيات الفلسطينيات
Publication Date
Sun Oct 15 2017
Journal Name
Research Journal Of Applied Sciences, Engineering And Technology
Publication Date
Mon Feb 01 2021
Journal Name
Engenharia Agrícola
(1)
(1)
Publication Date
Wed Jan 01 2020
Journal Name
Journal Of Biotech Research
(2)
Publication Date
Sun Jan 01 2023
Journal Name
Technologies And Materials For Renewable Energy, Environment And Sustainability: Tmrees22fr
Publication Date
Sun Oct 26 2025
Journal Name
Kufa Journal Of Arts
Publication Date
Tue May 02 2023
Journal Name
Social Science Journal
Publication Date
Fri Feb 01 2019
Journal Name
Journal Of Economics And Administrative Sciences
A Comparison of Parameters Estimation Methods for the Negative Binomial Regression Model under Multicollinearity Problem by Using Simulation
/ مقدر الامكان الاعظم
مقدر انحدار حرف
مقدر ليو
أنموذج انحدار ثنائي الحدين السالب
التعدد الخطي.
Maximum Likelihood Estimator
Ridge Regression Estimator
Liu Estimator
Negative Binomial Regression Model
Multicollinearity Problem.
This study discussed a biased estimator of the Negative Binomial Regression model known as (Liu Estimator), This estimate was used to reduce variance and overcome the problem Multicollinearity between explanatory variables, Some estimates were used such as Ridge Regression and Maximum Likelihood Estimators, This research aims at the theoretical comparisons between the new estimator (Liu Estimator) and the estimators
Publication Date
Sun Mar 07 2010
Journal Name
Baghdad Science Journal
Synthesis of New Heterocyclic Derivatives from 4-(3, 5-Dimethyl-1-phenyl-1H-pyrazol-4-ylazo)- benzoic acid
"Azo compound
Pyrazol derivatives
active methylene compound"
In this work pyrazolin derivatives were prepared from the diazonium chloride salt of 4-aminobenzoic acid. Azo compounds were prepared from the reaction of an ethanolic solution of sodium acetate and calculated amount of active methylene compound namely, acetyl acetone to obtain the corresponding hydrazono derivative (1). Cyclocondensation reaction of compounds (1) with hydrazine hydrate and phenyl hydrazine in boiling ethanol affording the corresponding pyrazoline-5-one derivatives of 4-aminobenzoic acid (2,3). Then compound (3) was reacted with thionyl chloride to give the corresponding acid chloride derivative(4), followed by conversion into the corresponding acid hydrazide derivative (5) carboxylic acid thiosemicarbazide (11), esters
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Publication Date
Sun Jul 25 2021
Journal Name
Natural Resources Research
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