Play constitutes a significant means for children to figure out the world around. Play helps children to have a healthy brain that increase their creativity via developing emotional, cognitive, physical strength. Thus, the current research aims to identify the role of play in psychological development of children. The findings of study revealed that play develops children’s cognitive, emotional abilities and enhances their self-confidence. Play forms a major approach for learning that promotes children to get rid of stress. Additionally, it supports language development of children

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This study deals with the subject of violence, but from another perspective, it has not been emphasized in contemporary studies of violence in Arabic and raqi universities, which is the structural or institutional aspect of violence. Traditional studies have focused their analysis of violence on the direct side the violence, The other side of the violence is the hidden violence, which is characterized by a lack of clarity of the underlying factors and its effects are not arises, which makes it the most serious violence, which requires a deep research into the social, political, economic, cultural and psychological structure of society (individuals and institutions). This study was based on the theory of the Norwegian scientist (J

The research deals with Environmental Management and how to develop its programs with the use of Knowledge Management, the environmental programs that integrate with processes can add strategic value to business through improving rates of resource utilization , efficiencies , reduce waste, use risk management, cut costs, avoid fines and reduce insurance. All these activities and processes can improve it through knowledge management, the optimal usage for all organizations information , employ it in high value and share it among all organizations members who involves in modify its strategy . Choosing suitable environmental management information system, develop it and modify it with organization processes, can greatly serve the en

The impact of a Schiff base namely 2-((thiophen-2-ylmethylene)amino)benzenethiol  to corrode mild steel in 1 M HCl  resolved was evaluated using different weight loss technique and scanning electron microscopy (SEM).different weight measurements to expand that the 2-((thiophen-2-ylmethylene) amino) benzenethiol  inhibits  the corrosion of mild steel through adsorbing  of  top for mild steel and block the active locality. The inhibitive impacts of 2-((thiophen-2-ylmethylene)amino)benzenethiol  increase with increasing concentration and decrease with increasing temperature. SEM to checking revealed that the alloy surface was quite unaffected and formed protective film on its surface. The investigated

تعتمد فرضية البحث على وجود ظاهرة عامة في إعمال المقاولات لدى المقاولين وهي
تجاوز الكلف الحقيقية المصروفة خلال مرحلة التنفيذ عن الكلف التخمينية للمقاولات الإنشائية
في مرحلة تقديم العطاء مما يسبب العجز المالي والمشاكل الاقتصادية للمقاولين.تبنى البحث
دورة حياة بناء النظام التي تمر بمراحل مختلفة هي تحديد المشكلة وتحليلها وتصميم النظام
الإداري المقترح.ولانجاز ذلك تم دراسة النظم العالمية والمحلية المع

In this paper we will explain ,how use Bayesian procedure in analysis multiple linear regression model with missing data in variables X's  as the new method suggest , and explain some of missing  Patterns under missing mechanism , missing complete at random MCAR and compare Bayesian estimator with complete case estimator by use  simulation procedure .           

المقدمة

تعد السياحة احد مستلزمات الحضارة الحديثة لما تفرزه من آثار ايجابية ودور متميز في دعم الاقتصاد الوطني وتقليل نسبة البطالة وتنشيط الحركة التجارية بين البلدان، اذ لا يمكن ان نتصور وجود بلد متحضر بلا فنادق ولا سياحة وتقديم مختلف السلع والخدمات سياحية التي يمكن ان تسبع الحاجات والرغبات واذواق السياح من خلال  وجود منشآت سياحية تعكس النمط السياحي القائم على اختلاف انواعه

جديرة تلك المجلة العريقة (Journal of management history) لما تقوم به من دور متميز في تأصيل الفكر الاداري وتنسيب الموضوعات لأصحابها الحقيقيين. فالمجلد (12)، العدد (3) لعام (2006) من هذه المجلة حمل مراجعة تاريخية كبيرة لعنوان عميق هو
(The emergence of job satisfaction in organization behavior A historical overview of the dawn of jop attitudes research)، للباحث (Thomas A. Wright) الاستاذ في قسم العلوم الادارية بجامعة نيف