Competitive swimming is a highly researched area and technological developments have aided advances in the understanding of the biomechanical principles that underpin these elements and govern propulsion. Moreover, those working in the sports field especially in swimming are interested in studying, analyzing, evaluating and developing motor skills by diagnosing the strengths and weaknesses of the skill, and accordingly, coaches and specialists correct these errors. The researchers chose this (Butterfly swimming) and the (arm length) is an important variable because the success of the stroke is greatly dependent on the propulsion generated from the arm pull, and swimmers with a longer arm span have a mechanical advantage with the resulting force being greater than those with a shorter arm span are. The descriptive method was used in a comparative manner, and the research sample was chosen intentionally are (3) swimmers from the advanced category in the (50 m) The Second International Scientific Conference of the Arab Society for Biomechanics in Sports butterfly swimming. This study took one month to filming the swimmers and take (8) kinematic variables were determined, it was identified that there is a significant relationship between the following variables (maximum time for strike, maximum time for arm (recovery phase), total of arm strikes and rate length for Strike). Moreover, the conclusion was Based on the presented data, butterfly swimming performance was depend on (upper limps) in general, the (Arm length) in particular, and more on technical variables (mainly motor coordination .)
Summery Abu Nawas poem won a great interest on the part of learners of Arabic literature.Studied in many ways ,trying to explore it’s the meanings ,purpose and psychological part of him. I have found that poem of Abu Nawas was divided into two parts ,one is the opposite of the other. Prostitution and asceticism. I tried to elucidate the factors control of the poem and then factors interestingness then studied patterns of censors .I found from them Calipha , poets and critics who then no one in the amount of influence in poetry by immorality to prosecution and faithful representation of reality ,but the poet can skillfully evade censorship that choking him in various ways such as satire cynism and transcendence it is able to so through the
... Show Moreفعالية القفز بالعصا واحده من الفعاليات المميزة بألعاب القوى، وهي تتطلب قدرات بدنية وقابليات حركية خاصة والتي تعتمد بشكل فعَال ومؤثر على النواحي البايوميكانيكية سواء أثناء الركضة التقريبية أو مرحلة الأرتقاء وصولاً الى الأنجاز المتحقق.وتبرز أهمية الدراسة من خلال تتبع المسار الحركي للقافز من خلال تحليل بعض المؤشرات البايوميكانيكية لمرحلتي الأقتراب والارتقاء واللتان تعتبران من اهم المراحل الفنية المؤث
... Show Moreيعد ( التحريض) من الوظائف المهمة التي يضطلع بها المسرح لدى جميع الشعوب التي لاتجد فضاءاً متكاملا للتفكير الحر، لابل هو حتى لدى الشعوب التي تتمتع أو تدعي التمتع بفضاء واسع للحرية والديمقراطية ولعل هذه الوظيفة ليست صنيعة مسرح الآن وإنما هي امتداد لعصور مسرحية موغلة في القدم، إلا إن مايميز هذه الوظيفة هو المظهر الذي تبدو فيه ، إذ إنها محكومة بطبيعة الحياة الاجتماعية والسياسية وبطبيعة المجتمع نفسه من حيث فاعلية
... Show Moreتنطلق مشكلة البحث الحالي من دراسة ماهية العلاقة المتغيرة ما بين الادراك كونه العملية التي تسهم بقسط كبير في تعرف مكونات البيئة المحيطة بنا ومعطياتها وكيفية التكيف معها وبين التذوق الفني والحكم الجمالي اللذين يعتمدان اساساً في نشؤوهما على عملية ادراك المعطيات الحسية للوسيط المادي المتمثل بالعمل الفني فالتذوق الفني والحكم الجمالي يتأثران بالمستوى الادراكي والخبرات المعرفية وتراكمها للافراد, لذلك تظهر أخ
... Show MoreIn this paper we suggest new method to estimate the missing data in bivariate normal distribution and compare it with Single Imputation method (Unconditional mean and Conditional mean) by using simulation.
يعتبر التلوث احد المشكلات المهمة التي تواجه البشرية في الوقت الحاضر نتيجة للنشاط الإنساني المتزايد في مجالات الحياة المختلفة وتوجد أنواع مختلفة من اشكال التلوث، ويعتبر تلوث الهواء احد مظاهر التلوث خطورة، لذلك اجريت بحثا باستعمال انموذج الانحدار اللوجستي حيث يعتبر من النماذج الكفؤة والملائمة في عملية تحليل البيانات الوصفية ثنائية الاستجابة، وانموذج بروبت الذي يشبه أنموذج اللوجستي الثنائي في طبيعة ا
... Show MoreThe no parity problem causes determining is the most interesting case by doctors and researchers in this filed, because it helps them to pre-discovering of it, from this point the important of this paper is came, which tries to determine the priority causes and its fluency, thus it helps doctors and researchers to determine the problem and it’s fluency of increase or decrease the active sperm which fluencies of peregrinating. We use the censored regression (Tobit) model to analyze the data that contains 150 observations may by useful to whom it concern.
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Background: Tooth wear is one of the most common problems in the older dentate population which results from the interaction of three processes (attrition, abrasion and erosion) and it affects all societies, different age groups, and all cultures. This study was achieved to evaluate the prevalence and distribution of tooth wear among institutionalized residents in Baghdad city\ Iraq. Subjects and Methods: This survey was accomplished on four private and one governmental institution in Baghdad city. One-hundred twenty three (61 males, 62 females) aged 50-89 years were participated in this study. The diagnosis and recording of tooth wear were according to criteria of Smith and Knight. Results: The prevalence of tooth wear was 100% with a mean
... Show Moreكلية الفنون الجميلة بين تقادم المعرفة وعصر التحديات
الموسيقى العربية ترفيه ام ثقافة بين الماضي والحاضر