The development in manufacturing computers from both (Hardware and Software) sides, make complicated robust estimators became computable and gave us new way of dealing with the data, when classical discriminant methods failed in achieving its optimal properties especially when data contains a percentage of outliers. Thus, the inability to have the minimum probability of misclassification. The research aim to compare robust estimators which are resistant to outlier influence like robust H estimator, robust S estimator and robust MCD estimator, also robustify misclassification probability with showing outlier influence on the percentage of misclassification when using classical methods. ,the other

Discriminant between groups is one of the common procedures because of its ability to analyze many practical phenomena, and there are several methods can be used for this purpose, such as linear and quadratic discriminant functions. recently, neural networks is used as a tool to distinguish between groups.

In this paper the simulation is used to compare neural networks and classical method for classify observations to group that is belong to, in case of some variables that don’t follow the normal distribution. we use the proportion of number of misclassification observations to the all observations as a criterion of comparison.  

In linear regression, an outlier is an observation with large residual.  In other words, it is an observation whose dependent-variable value is unusual given its values on the predictor variables. An outlier observation may indicate a data entry error or other problem.

An observation with an extreme value on a predictor variable is a point with high leverage. Leverage is a measure of how far an independent variable deviates from its mean. These leverage points can have an effect on the estimate of regression coefficients.

Robust estimation for regression parameters deals with cases that have very high leverage, and cases that are outliers. Robust estimation is essentially a

Abstract:-

            The approach maintenance and replacement one of techniques of operations research whom cares of the failure experienced by a lot of production lines which consist of a set of machines and equipment, which in turn exposed to the failure or work stoppages over the lifetime, which requires reducing the working time of these machines or equipment below what can or conuct  maintenance process once in a while or a replacement for one part of the machine or replace one of the machines in production lines. In this research is the study of the failure s that occur in some parts of one of the machines for the General Company for Vege

The purpose of this research is to identify the E-signing and its concept.

Due to the increasing role and importance of the E-trade in may countries, as it provide many advantages over the traditional trade. We have to deal with may E-trade aspects and tools in which the E-signing is the most important. In this research we will deal: first with the article approach- E-signing definition, Digital signing, its mechanism, requirements, types and features. Second: the practical approach: It has been implemented according to a questionnaire contain many questions some of them are comma, other an specialized in research hypothesis and some concern the obstacles faced the application of E-signing. The questionnaires been distillated to

In this research, a Co-polymer (Styrene / Allyl-2.3.4.6-tetra-O-acetyl-β-D-glucopyranoside) was synthesized from glucose in four steps using Addition Polymerization according to the radical mechanism using Benzoyl Peroxide (BP) as initiator. Initially, Allyl-2.3.4.6-tetra-O-acetyl-β-D-glucopyranoside monomer was prepared in three steps and the reaction was followed by (HPLC, FT-IR, TLC), in the fourth step the monomer was polymerized with Styrene and the structure was determined by FT-IR and NMR spectroscopy. The reaction conditions (temperature, reaction time, material ratios) were also studied to obtain the highest yield, the relative, specific and reduced viscosity of the prepared polymer was determined, from which the viscosity ave

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   للنصارى شعائر يجب القيام بها عندهم , إذ لا يصح التخلي عنها, ويقولون فيها أنها فرائض مقدسة وضعها المسيح (u) , وهي أعمال جليلة تشير إلى بركات روحية حسب زعمهم .

والعقيدة هي أول ما يطلب من المؤمن وعليها ينبني الدين وهي أول الأمر وأساس العمل، وكل ما سواها من الأعمال مبني عليه وتابع لها لذلك فإن صلاح الأعمال رهين بحسن

يعد مصطلح مابعد الحداثة من أهم المصطلحات التي شاعت في الخمسينيات ,وقد اختلفوا في تحديد مصدر هذا المصطلح ,فهناك من ينسب مفردة هذا المصطلح الى (ارنولد تويبني ) في العام 1954,وهناك من يربطها بالناقد الامريكي (تشارلس أولسن )في الخمسينيات ,وهناك من يحيلها الى ناقد الثقافة (ليزلي فيدلر) , في العام 1965,بيد أن البحث افضى الى اكتشاف استخدامها قبل هذه التواريخ ,فقد استخدم (جون واتكنز تشابمان ) مصطلح الرسم مابعد الحداثي في الع