The presentwork is a theoretical study in the field of charged particle optics. It concentrates on the design of electrostatic enzil lens for focusing charge particles beams, using inverse method in designingthe electrostatic lens. The paraxial ray equation was solved to obtain the trajectory of the particles, the optical properties such as the focal length and spherical and chromatic aberration coefficients were determined. The shape of the electrode of the electrostatic lens were determined by solving poison equation and the results showed low values of spherical and chromatic aberrations, which are considered as good criteria for good design.
The aim of this paper is to construct cyclic subgroups of the projective general linear group over from the companion matrix, and then form caps of various degrees in . Geometric properties of these caps as secant distributions and index distributions are given and determined if they are complete. Also, partitioned of into disjoint lines is discussed.
The purchase of a home and access to housing is one of the most important requirements for the life of the individual and the stability of living and the development of the prices of houses in general and in Baghdad in particular affected by several factors, including the basic area of the house, the age of the house, the neighborhood in which the housing is available and the basic services, Where the statistical model SSM model was used to model house prices over a period of time from 2000 to 2018 and forecast until 2025 The research is concerned with enhancing the importance of this model and describing it as a standard and important compared to the models used in the analysis of time series after obtaining the
... Show MoreLet f and g be a self – maps of a rational exterior space . A natural number m is called a minimal coincidence period of maps f and g if f^m and g^m have a coincidence point which is not coincidence by any earlier iterates. This paper presents a complete description of the set of algebraic coincidence periods for self - maps of a rational exterior space which has rank 2 .
The aim of the research is to design educational software based on Web Quests and to measure its effectiveness in developing information search skills of students at the Department of Educational and Psychological Sciences. The research is experimental in nature using pre-post measurement. The research sample consisted of (91) male and female students from the second grade in the Department of Educational and Psychological Sciences, they were divided into two equal groups; the experimental group consisted of (47) students who adopted the educational software as a studying method, and the control group consisted of (44) students who follow the traditional method. The researchers prepared a list of skills for searching information and they
... Show MoreThis research tackles the semantic function of colors in the poetry of Gada Al Samman, in the introduction the research explores the difference in the semantic colors for people and the function of these colors in arising the feelings for the human spirit and its influence on that spirit. The research tackles the poems of this poetess that are full of symbolic colors that convey positive and negative meanings related to the poetess herself. In addition the research shows the functions of colors in her poetry through the compatibility of colors by employing colors in her poetry in terms of compatibility with the vision of community to denote colors. Beside using the function of colors contrast by employing the colors in different meaning
... Show Morewealth which has, as well as the factors which entered the national consciousness of thousands of the continent 2. has not been possible to continue the national resistance in Namibia means spontaneous first and in light of the factors of national awareness of the new has taken sweeping the continent during the interwar period in the thirties and forties of the last century, marked by the return of a lot of educated Africans who have received their education in the countries of Western Europe, where traders who looktoa life of freedomenjoyed bythe people ofWaldo.. As well as awareness of labor represented by the working class and the work of strikes and mass anti-exploitation, which was subjected to factor in the region in wages and lack
... Show MoreThe role of kindergarten in the development of moral values of children" The child moral education in institutions of basic education considered as the priority of values and social goals of methodical education , and consideringto how the child be in the kindergarten of susceptibility to absorb and configuration and modification of experiences, thus the kindergartens are important because of their influence in the formation of his character through reincarnation of the personality of those who manage education and try to imitate their values and attitudes and standards of right and wrong. This is also happen through his exercise of educational activities until he has moral insight which enables him to distinguish between good and evil b
... Show MoreThe Maghreb Did not know modern problem more complex and dangerous than the problem of Western Sahara, which is the first obstacle in front of building Arab Maghreb, did not enter Post-independence governments in attrition mutual since liberation wars until today, as happened with this problem between Morocco and Algeria supporting the Polisario Front separatist and did not know the end after so, this research focused on the show dimensional geopolitical to this problem and reveal the role of regional and international behind its continuation and the latest developments after the revolutions Arab Spring and its impact on the problem and the end of UN mission new to the Sahara and results.
The sunna has the great effect in building the Islamic civilization, and the formulation of the Islamic thinking. It worked at spreading of soicinces at every district of Islam. The purified sunna represent one of the main monuments of Islam after Quran in clarifying the basics of the human intercommunication, and the divine reality. It comes as an explanation to the myertious accounts in the shariaa and sunna that it has begun to form an intellectual depth of the Mulsims' life. The importance ofsunna is it is the second source of legislation in Islamic after the holt Quran. It comes only to affirm what have been mentioned already in theHoly Quran, or clarifying what is not clear in the Quran.
Discourse markers are expressions used to connect sentences to what comes before or after and indicate a speaker's attitude to what he is saying.As linguistic items, they have important functions in discourses of various styles or registers. And being connective elements, discourse markers relate sentences, clauses and paragraphs to each other. "One of the most prominent function of discourse markers, however, is to signal the kinds of relations a speaker perceives between different parts of the discourse". (Lenk 1997: 2) Through political discourse, different types of discourse markers are used. This paper deals with the importance and functions of discourse markers and tries to shed light on the kinds of discourse markers used in polit
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