This research is an attempt to study and evaluate the maintenance function at Factory 7 - The State General Company for Leather Industries, and to design a computerized preventive maintenance system to design and to analyze preventive  maintenance.  To accomplish the objectives of this research, data were gathered and analyzed according to the reliability engineering criteria for the period 2/1– 30/6/2005, then a preventive maintenance plan was designed for each machine of the sample study using the computerized system designed in this research. A Monte Carlo Simulation methodology was used for the purpose of evaluating the performance of the preventive maintenance plan of each machine for one year. The simulation res

Yehuda Steinberg is a Russian writer who drew his culture and education from Eastern Europe's neighborhood and village atmosphere, especially in Russia. He spent his life traveling between the forests and mountains of Besravia, Where the scenic landscape affected him greatly. It is evident clearly in most of his stories when he describes the mountain, alleys, lake, and forest. Most readers think for the first time that these stories are nothing but programs to describe nature. Steinberg attempted to link the surroundings with his political and literary tendency. Even though he had never been to Palestine, it was observed that he glorified Palestine in some of the chapters and paragraphs of his stories. It was a predominant phenomeno

اتجهت دول العالم الى تسخير جميع الإمكانيات والخبرات والعلوم من اجل الوصول الى مستويات متقدمة في الرياضات المختلفة ويهدف التدريب الرياضي إلى إعداد اللاعبين إعدادا جيدا تكمن مشكلة البحث من خلال خبرة الباحثتان الميدانية ومتابعة تدريبات لاعبي المدرسة التخصصية كرة اليد فقد لوحظ هناك ضعف واضح في الأداء المهاري ولابد من تطوير أوجه الضعف لتحقيق مستوى انجاز افضل . ويهدف البحث اعداد تمرينات خاصة بأستخدام جهاز ا

الحمد لله ، والصلاة والسلام على سيدنا محمد رسول الله ، وعلى آله وأصحابه ومن والاه.

 أما بعد:

فقد تبارى العلماء لخدمة ديننا الحنيف، توثيقاً، وتحليلاً، ودراسة، مضافاً للتعريف بالأعلام الذين أسهموا في إرساء معالم الدعوة الإسلامية، وقد تباينت أساليب علمائنا الأفذاذ، فلكل كان منهجه وطريقته، مقصدهم في هذا، حبهم لهذا الدين، والذبّ عن العقيدة، ومن هؤلاء الجهابذة، العلامة عبد الله بن ابراهيم الميرغني ا