Predicting the visibility of the lunar crescent drew great attention during the Middle Ages, especially among Muslims, because the dates of religious practices in Islam and calendars, in addition to being aware of the motion of the moon in its orbit, are based on the lunar month.

 This paper aims to study the development of crescent visibility criteria from ancient times through the medieval period to the modern update. Some basics and astronomical terms related to crescent visibility are presented and then a comprehensive view of crescent visibility criteria is examined by surveying about 54 published research papers related to the issue of crescent visibility. Each research paper is summarized, classified, and the re

 The general approach of this research is to assume that the small nonlinearity can be separated from the linear part of the equation of motion. The effect of the dynamic fluid force on the pump structure system is considered vibrates at its natural frequency but the amplitude is determined by the initial conditions. If the motion of the system tends to increase the energy of the pump structure system, the vibration amplitude will increase and the pump structure system is considered to be unstable. A suitable MATLAB program was used to predict the stability conditions of the pump structure vibration. The present research focuses on fluid pump problems, namely, the role played by damping coefficient C, damping factor

In this research work an attempt has been made to investigate about the Robustness of the Bayesian Information criterion to estimate the order of the autoregressive process when the error of this model,  Submits to a specific distributions and different cases of the time series on various size of samples by using the simulation,  This criterion has been studied by depending on ten distributions, they are (Normal, log-Normal, continues uniform, Gamma , Exponential, Gamble, Cauchy, Poisson, Binomial, Discrete uniform) distributions, and then it has been reached to many collection and recommendations related to this object , when the series residual variable is subject to each  ( Poisson , Binomial , Exponential , Dis

Because asceticism has a great impact on educating the human soul properly, according to what was mentioned in the Book and the Sunnah of the Prophet, and keeping it away from vices and what is devolving into it, and this world and its adornments keep the Muslim away from virtues and work with them in order to reach the Hereafter in which is the eternal bliss that God, peace be upon him, has prepared for the obedient. The two pious obedient ones. And because of the impact of this topic on the Islamic community and adorn it with good qualities. Likewise, I saw many Muslims who do not prefer the life of this world over the hereafter, and they began to fight over the world and enjoy its adornments, and they took pride in money, building, an

Extemporization is the ability of the actor to reflect his internal being. It gives a sort of confidence and an ability to show the personal countenance of the role away from tension and rigidity. By extemporization, it is possible to deal with and criticize the real living life so it is an intellectual, emotional, sensual, and perceptive process connected with the psychological energy and the emotional memory and all this goes under the control of the director and his instigations and instructions depending on what the text involves of intellectual, social and psychological motivators so it primarily depends on talent, chance and discussion. The research involves four chapters; the first contains the problem

The sports sponsorship contract is one of the most important contracts concluded by sports institutions in order to obtain sufficient funding for the performance of its activities. Contract and its development.

This study dealt with the legal nature of the sports sponsorship contract by examining the extent to which some of the provisions of the named contracts apply to it, and then applying the provisions of which one will apply to it, by dealing with the contracts on the benefit such as the licensing contract, the deposit contract, and the contracts on work such as the work contract and the contracting contract.

اذا تم العقد بين الاستشاري وعميله مستكملا لأركانه وشروطه، افاد حكمه، أي الزم طرفيه بالتزامات معينة تجسد هذا الحكم ولا سبيل للتنصل من هذه الالتزامات او تعديلها الا اذا اتفق الطرفان على ذلك، فللعقد قوته الملزمة للطرفين التي تتجسد في جزاء الاخلال به ( المسؤولية العقدية )، وحيث ان القواعد العامة للمسؤولية العقدية ليست من النظام العام، يجوز عندئذ الاتفاق على تعديلها في حدود النظام العام والاداب¹. لذلك وللت

the banks are one of the public services that must be available in the city to ensure easy financial dealings between citizens and state departments and between the state departments with each other and between the citizens themselves and to ensure easy access to it, so it is very important to choose the best location for the bank, which can serve the largest number of The population achieves easy access. Due to the difficulty of obtaining accurate information dealing with the exact coordinates and according to the country's specific projection, the researcher will resort to the default work using some of the files available in the arcview program

 The experiment was carried out in the field of botanical garden belonging to the Department of Biology Sciences, College of Education for Pure Science -Ibn AL-Haitham ,Baghdad University. for the growing season. 2014 -2013 to study the effect of the electromagnetic field which included five different intensities (0,5,10,15,20) MT and three periods of time, namely, (1,2,3) an hour and their interaction on  some of the morphological characteristics of the safflower plant . designed experiment by Randomized Complete Block Design (RCBD) and three replicates per treatment, compared to the average using  less significant difference at the level of probability (0.05) , the results showed the following:- 1-Exposing seeds to diffe

يمثل الفهم الصحيح لادوار وأشكال الادارات العامة في سعيها لإنجاز الأهداف تلبية للاحتياجات المجتمعية عبر مؤسساتها العامة ، بعداً إستراتيجياً في الأداء الفعال والكفء لهذه الادارات ، وقد كان للتطورات الحاصلة في البيئة الخارجية دوراً مؤثرا أسهم في دفع العديد من الدول لإعادة النظر في أجهزتها الإدارية العامة لتحسين مقدرتها على مواجهة التغيرات المتسارعة والتوجه نحو اعتماد مداخل واستراتيجيات إبداعية حديثة في الع