A simulation study is used to examine the robustness of some estimators on a multiple linear regression model with problems of multicollinearity and non-normal errors, the Ordinary least Squares (LS) ,Ridge Regression, Ridge Least Absolute Value (RLAV), Weighted Ridge (WRID), MM and a robust ridge regression estimator MM estimator, which denoted as RMM this is the modification of the Ridge regression by incorporating robust MM estimator . finialy, we show that RMM is the best among the other estimators
This Book is intended to be textbook studied for undergraduate course in multivariate analysis. This book is designed to be used in semester system. In order to achieve the goals of the book, it is divided into the following chapters (as done in the first edition 2019). Chapter One introduces matrix algebra. Chapter Two devotes to Linear Equation System Solution with quadratic forms, Characteristic roots & vectors. Chapter Three discusses Partitioned Matrices and how to get Inverse, Jacobi and Hessian matrices. Chapter Four deals with Multivariate Normal Distribution (MVN). Chapter Five concern with Joint, Marginal and Conditional Normal Distribution, independency and correlations. While the revised new chapters have been added (as the curr
... Show MoreThis Book is intended to be textbook studied for undergraduate course in multivariate analysis. This book is designed to be used in semester system. In order to achieve the goals of the book, it is divided into the following chapters (as done in the first edition 2019). Chapter One introduces matrix algebra. Chapter Two devotes to Linear Equation System Solution with quadratic forms, Characteristic roots & vectors. Chapter Three discusses Partitioned Matrices and how to get Inverse, Jacobi and Hessian matrices. Chapter Four deals with Multivariate Normal Distribution (MVN). Chapter Five concern with Joint, Marginal and Conditional Normal Distribution, independency and correlations. While the revised new chapters have been added (as the curr
... Show Moreأهميـــة البحــث :
تعد مشكلة المخدرات من اهم واخطر المشكلات التي تواجه العالم في وقتنا الحاضر بل ومختلف المجتمعات وصانعي السياسة ومتخذي القرار .
تتجلى خطورة هذه الآفة الخطيرة والفتاكة في ازدياد ظاهرة تعاطيها وانتشارها في العالم بشكل عام والمجتمعات العربية والاسلامية بشكل خاص في ظل الظروف التي يواجهها الافراد في مجتمعاتنا من ضغوط امنية واقتصادية واجتماعية جعلت بعض ال
... Show Moreيركز البحث على قصائد ماكسيمس للشاعر جارلس اولسن.تعتبر هذه القصائد ابداع غير تقليدي ونادر حيث استطاع الشاعر من خلالها ان ياخذ القارىء في عمليه مستمرة لشخصية واحدة في مكان واحد وهو جلوسستر.ان قصائد ماكسيمس مقسمة الى ثلاث مجلدات تقرأ كقصيدة واحدة . تقرأ هذه السلسلة من القصائد بسياق شخصي وسياسي ووجداني. تركز الدراسة على فكرة الوقت والمكان حيث تظهر القصائد بانوراما من المناظر الطبيعية والاشخاص والنماذج بصوره مس
... Show Moreان للإسماعيلية اهمية كبيرة في التاريخ الاسلامي والفكر السياسي الاسلامي , لما شغلته من حيزٍ كبيرٍ من حيث التنظير و الكتابة و من حيث التطبيق و الممارسة للسلطة السياسية من خلال اقامة دولتهم المنشودة في مصر (الدولة الفاطمية ) , اذ جعلت لنفسها فكراً خاصاً بها وحاولت ان تنشره في بلدان مختلفة من العالم الاسلامي واليوم حضورهم موجود وفاعل ولكن يكتفه الغموض و السرية . وان اهم ما ميز فكرهم السياسي هو اعتمادهم على التأويل ا
... Show MoreThe relation ship between Syria and Lebanon is a distinguished one
because of the cultural social geographic and historical common factors. So
that, Syria considers that Lebanon has a stratieyical depth for it, especially its
conflict with (Israel) does end and parts of its lands still under the occupation
of the Zionist thus, any conflict in Lebanon between parties and ethnics
groups could be considered an important influence on the bases of the Syrian
policy. Moreover the issue of Palestine which is considered the central issue
for Syria and Arab as whole. In addition to some of the political movements
that happened in the region itself. It could be said that Syrian interference in
Lebanon has a positive infl
يرجع تاريخ الاصلاحات الادارية إلى سبعينات القرن الماضي ،ولاسيما الندوة التي عقدت لبحث العوامل المؤثرة في انخفاض الانتاجية عام 1976، وعملية ترشيق الاجهزة الادارية للدولة عام 1987.
ان بحثنا الموسوم (نظام المعلومات المحاسبية ودوره في عملية اتخاذ القرارات) يتم عرضه في فرعين مترابطين، هما:
- المحاسبة نظام معلومات.
- الادارة صانعة للقرار.<
Despite the growing interest in the subject of the environment and environmental pollution and the increasing of scientific studies to measure the environmental cost, but it still suffers shortcomings and incompleteness due to the difficulties facing the process of measuring of these costs , Due to lack of the possibility of determining the monetary value to it.
The research began trying to develop solutions to the problem of the research , which is the actual measuring nothingness of environmental pollution for research sample plant and It’s comparison to local and international environmental pollution standards , for the purpose of adoption in the imposi
... Show MoreThere is no doubt that the narrative form is a mixture of many elements that it
becomes so hard to differentiate between them. Thus, to differentiate between those
elements we must understand the job of every element; and that is the structure of narrative
form in the artistic frame of the old Arabic poem.
Poetry, as the readers confirm, is strongly related to a lot of arts. The rhetorical
form is related to the art of drawing and photography, the rhythm- the core of poetry- is
related to music, its structure to the art of architecture, its tension to drama as it consist of
internal conflict between its elements and ingredients, and the poetry has a narrative
element which relates it to the art of narration and it
كشفت دراسات ما بعد البنيوية والتطور الحاصل في الدراسات النقدية عن مقدار التداخل بين النصوص في انتاج الظواهر الادبية ، وخير ما يكشف هذا التداخل هو المنهج الذي يركز على دراسة التناص ولاسيما في النصوص التي تتشكل على وفق التناص الواعي الذي الذي يتألف من مجموعة نصوص ادبية يتفاعل فيها نص الكاتب مع نصوص اخرى.