يعد الهواء من الضروريات لعيش الانسان وكلما كان الهواء نقياً كلما كانت صحة الانسان جيدة، وفي الآونة الاخيرة اصبح الهواء يتأثر بالملوثات وهنالك عدة متغيرات تؤثر في نقاوة الهواء واصبح الهواء يؤثر على صحة الانسان لما يحمله من ملوثات توثر على جسم الانسان وصحته. ولمعرفة مدى تلوث الهواء في كل مناطق الارض تم بناء مؤشر لمعرف تلوث الهواء بالاعتماد على عدة متغيرات يسمى بمعامل تأثير الهواء. ولبيان اكثر المتغيرات تأثيرا على هذا المعامل تم بناء انموذج انحدار وبما ان معامل تأثير الهواء غير دقيق فتم استعمال انموذج انحدار ضبابي معلمات والمتغير المعتمد ام المتغيرات التوضيحية فكانت جازمة. وفي بحثنا هذا تم بناء انموذج انحدار ضبابي لتلوث الهواء العراق، وتم تقدير معلمات الانموذج للوصول الى العوامل التي لها تأثير اكبر في تلوث الهواء في العراق بعد ان تم جمع البيانات من وزارة البيئة العراقية عن معامل تأثير جودة الهواء (AQI) والذي يعتبر معيارا اساسيا لقياس تلوث الهواء وهل هو جيد او مقبول او سيئ للأشخاص الحساسين ام خطير من خلال ستة عوامل تمثل المتغيرات التوضيحية هي (co2,o3,so2,pm10.pm2.5,NO2) والتي بياناتها غير ضبابية. تم قياسها في الجو عن طريق استخدام محطات تقوم بقياسها منتشرة في المحافظات كافة وتم اخذ البيانات لشهر كامل عن طريق اخذ ثلاث قراءات في اليوم الواحد ولجميع المحافظات كل 8 ساعات وتم اختبار البيانات للتأكد من مشكلة التعدد الخطي وتبين وجود المشكلة وتم استخدام انحدار الحرف الضبابي لتقدير معلمات الانموذج وتبين ان انموذج انحدار الحرف الضبابي يعطي تقديرات افضل دقة. ومن خلال المقارنة مع جدول المعايير نجد ان كل محافظات العراق خارج نطاق المديات التي لا تؤثر على صحة الانسان.
المستخلص يوسف حاييم برينر الأديب اليهودي من افراد الهجرة اليهودية الثانية الى فلسطين, أغنى الأدب العبري بالكثير من النتاجات التي عالجت مواضيع مهمة في المجتمع اليهودي في فلسطين. روايته (منذ البداية) والتي صدرت بعد وفاته, عالجت مواضيع مجتمعية مهمة تخص اليهود المهاجرين في موجة الهجرة الثانية. وكانت تلك المواضيع تعنى بمعاناتهم وعلاقاتهم فيما بينهم. كذلك ركز برينر في روايته هذه على أستخدام الأسماء التق
... Show MoreSearch procedures on the treatment research has tended include what cam followers Astaratejaat available to the business organizations to achieve competitive advantage and continued benefits of the form in which the organization can maintain its success in the race competitive and increase production efficiency.
The objectives of the study , the study came with the number of goals and the most important one the knowledge of the relationship and the influence between the variables of the study and review of the latest literature frameworks intellectual and philosophical to the variables of the study and come up with recommendations that could help the organization improve its performance .
... Show MoreThe liability limit liability limit and reinsurance re factors insurance are important in influencing the achievement of company's competitive goals and achieve success and excellence in the market and because the limit of liability and reinsurance aimed to increase output with the stability of inputs leading to increased insurance business and increase profits. The study was based on two variables presidents interact with each other to form the intellectual and philosophical framework has two ( the limit of liability and reinsurance ) . The study was launched from a problem expressed by a number of targeted questions answered from the elucidation of theoretical philosophy and intellectual goals of these variables and highlight the impor
... Show MoreThe research illustrated that the theory of constraints is "A group of concepts and basics that aim at helping the management in order to determine the difficulties and how to overcome these difficulties through determining the necessary change and how these change can be done efficiently and effectively ".
The research showed that the theory of constraint including its tools calls for magnifying throughput, constricting the product cycle , determining the optimal production mix , utilization of scare resources and canceling the idle time , that achieving throughput increasing then increasing profit .
Moreov
... Show MoreThis 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
... Show MoreTotal resistance training (TRX) is a new technique for resistance training using body weight, and gives the body movement at more than one angle compared to regular dumbbell training or weight training, in addition to reducing the risk of injury, developing strength, balance, and flexibility. It has an effective effect in developing functional muscle balance and can be combined with... Basic exercises to increase their effectiveness, and the two researchers noticed, after reviewing previous studies and following the game, that they noticed the lack of use of TRX exercises among the teams, and this was confirmed after the personal appetizers that the two researchers conducted with the volleyball coaches, which does not allow diversification
... Show MoreReliability has an important role in both the industrial and engineering applications. So the need for Reliability Tests appeared are series of tests a discover out of factors that appear through the test, knowledge limit of fit a specifics production addition for getting on goodness of production.
Therefore, the need for research to test for censor data from ( Type II ) for exponential distribution with one parameter and that test it’s (Reliability Growth) includes three curves are Idealized Growth curve estimation parameters and reliability with maximum likelihood method, Duane Growth curve takes estimation parameters and reliability with least squares method, Exponential Reliability Growth Cur
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