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bsj-5159
Variable Selection Using aModified Gibbs Sampler Algorithm with Application on Rock Strength Dataset
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Variable selection is an essential and necessary task in the statistical modeling field. Several studies have triedto develop and standardize the process of variable selection, but it isdifficultto do so. The first question a researcher needs to ask himself/herself what are the most significant variables that should be used to describe a given dataset’s response. In thispaper, a new method for variable selection using Gibbs sampler techniqueshas beendeveloped.First, the model is defined, and the posterior distributions for all the parameters are derived.The new variable selection methodis tested usingfour simulation datasets. The new approachiscompared with some existingtechniques: Ordinary Least Squared (OLS), Least Absolute Shrinkage and Selection Operator (Lasso), and Tikhonov Regularization (Ridge). The simulation studiesshow that the performance of our method is better than the othersaccording to the error and the time complexity. Thesemethodsare applied to a real dataset, which is called Rock StrengthDataset.The new approach implemented using the Gibbs sampler is more powerful and effective than other approaches.All the statistical computations conducted for this paper are done using R version 4.0.3 on a single processor computer.

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Publication Date
Tue Feb 14 2023
Journal Name
Journal Of Educational And Psychological Researches
Negotiation Behavior and Its Relationship to Some Variables of Administrative Teachers
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Abstract

The current research aims to identify the negotiation behavior of administrative teachers, as well as to identify the significance of the differences in negotiation behavior according to the variables (gender, scientific title, length of service). After confirming the psychometric characteristics of (20) items, the researchers applied the scale to (400) male and female administrative teaching staff who were randomly selected from the University of Baghdad for the academic year 2021/2022. The results showed the following the research sample has a negotiating behavior. There are no statistically significant differences between gender, scientific title, and length of service in the means of negotiating beha

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Publication Date
Sun Jul 03 2016
Journal Name
Journal Of Educational And Psychological Researches
الذكاء المكاني وعلاقته ببعض المتغيرات لدى طلبة الجامعة
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The great scientific evolution and the expansion of the demands of life, especially in the field of architectural design make human's need increased to use his abilities and all possibilities in active way to have a main role in this progress. To achieve his role in this progression which is can not be achieved and accomplished only by depending on  the mental capacity including intelligence spatial / visual, which is one of the branches of the theory of multiple intelligences. This theory is one of the most important theories which we strongly need it to reveal this type of intelligence in order to know the teachers on learners' abilities to put appropriate methods to deal with them.of this current research as follows:

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Publication Date
Mon Oct 06 2014
Journal Name
Journal Of Educational And Psychological Researches
إدارة الانفعالات وعلاقتها ببعض المتغيرات لدى المرشدين التربويين
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Current research aimed at measurement of management of emotional among counselors and  knowledge of emotions management according to the variables of sex and length of service with counselors.

The Scale applied to a sample of basic research, amounting to (300) counselors.

1- That counselors have administration emotional.

2- There are no differences in the management of emotional statistically significant according to the variable (gender).

3- statistically significant differences according to the variable (length of service) in the management

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Publication Date
Sun Jan 04 2015
Journal Name
Journal Of Educational And Psychological Researches
المشكلات النفسية لدى اطفال الرياض وعلاقتها ببعض المتغيرات
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When the enrollment of children in Riyadh, facing many of the psychological problems that appear in their daily lives through their behavior and their actions with their peers and their teachers in kindergarten, often result in psychological problems from which they suffer to do things socially unacceptable impact on their relationship with interactive with others, Vchksah child depends on the quality of Education and the treatment they received from all of the family as an incubator, his first, and kindergarten as an environment second to raise him without that overlook about his relationship with his comrades grade and the combination of these factors is one of the most important reasons promising in effect on the child's condi

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Publication Date
Tue Feb 05 2019
Journal Name
Journal Of The College Of Education For Women
Leadership qualities among kindergarten children and its relationship to some variables
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There is no doubt that leadership is a social phenomenon , and human activity does not take place , but remained in the family cohesive have a common goal Alaho instil confidence in the same of her sons to be better , and the importance of this subject Arta researchers to identify the extent to which children in this phenomenon and to identify the causes and extent of its spread in the community , has been directing an open question (Appendix 1) to a group of kindergarten teachers , to learn about the characteristics of leadership that can be enjoyed by kindergarten children . The current research aims to:
1. Detect levels of leadership qualities among kindergarten children in the light of the characteristics of leadership skills
2

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Publication Date
Sun Jan 01 2006
Journal Name
Journal Of Educational And Psychological Researches
التحمل النفسي لدى المرشدين التربويين وعلاقته ببعض المتغيرات
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إستأثر مفهوم قوة التحمل النفسي (Psychological Hardiness)      رغم حداثته نسبياً بأهتمام العديد من الباحثين والدارسين . وحاولت الدراسات إبراز دوره المهم والفاعل في منع حدوث التأثيرات السلبية المتوقعة التي تحدثها ظروف الحياة الضاغطة على قابلية الفرد بصورة عامة ولا زال الاهتمام مستمراً في التحقق من هذا الدور . وتحاول الدراسة الحالية أن تلقي مزيداً من الضوء على هذا المفهوم وطبيعته مما يز

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Publication Date
Sun Feb 03 2019
Journal Name
Journal Of The College Of Education For Women
The relationship between the family violence and variables
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Publication Date
Sun Nov 19 2017
Journal Name
Iraqi Journal Of Laser
Effects of Diode Laser 940 nm with and without 5 % Sodium Fluoride White Varnish with Tri-calcium Phosphate on Dentin Permeability (In vitro study)
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It is found that hypersensitive teeth have a larger number and wider patent tubules than those of non-sensitive teeth. Objective: The aim of this study is to compare between the effects of diode laser at different power densities, with and without sodium fluoride on the sealing of exposed dentinal tubules and dentin permeability. Materials and methods: 118 teeth were used. Samples were divided into three major groups. The first consisted of 100 teeth used for permeability test. The second consisted of 16 teeth for measuring external surface temperature elevation while irradiation. The third, in turn, consisted of one pair of teeth observed under SEM for dentine surface morphology analysis. Results: For dentin permeability measurement, th

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Publication Date
Sat Dec 01 2018
Journal Name
Al-khwarizmi Engineering Journal
Biodegradation of Diesel Contaminated Soil Using Single Bacterial Strains and a Mixed Bacterial Consortium
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This study was conducted to assess the hydrocarbon degradation abilities of Sphingomonas paucimobilis, Pentoae species, Staphylococcus aureus, and Enterobacter cloacae, which isolated from diesel contaminated soil samples. Single strains and mixed bacterial consortia have been investigated their ability to degrade 1.0 % (v/v) of diesel oil in Bushnell- Haas medium as sole.carbon.and.energy.source. At temperature 30C, the individual.bacterial.isolates exhibited low growth and low degradation.than did the.mixed. bacterial.culture. After 28 days.of incubation the.combination.of four isolates degraded.an upper limit.of diesel  88.4%. This was. continued.by 85.1% by S. paucimobilis, 84 % by Pentoae sp., 79% by S.aureus, and

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Publication Date
Fri Sep 30 2022
Journal Name
Journal Of Economics And Administrative Sciences
Distinguishing Shapes of Breast Cancer Masses in Ultrasound Images by Using Logistic Regression Model
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The last few years witnessed great and increasing use in the field of medical image analysis. These tools helped the Radiologists and Doctors to consult while making a particular diagnosis. In this study, we used the relationship between statistical measurements, computer vision, and medical images, along with a logistic regression model to extract breast cancer imaging features. These features were used to tell the difference between the shape of a mass (Fibroid vs. Fatty) by looking at the regions of interest (ROI) of the mass. The final fit of the logistic regression model showed that the most important variables that clearly affect breast cancer shape images are Skewness, Kurtosis, Center of mass, and Angle, with an AUCROC of

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