In this paper, compared eight methods for generating the initial value and the impact of these methods to estimate the parameter of a autoregressive model, as was the use of three of the most popular methods to estimate the model and the most commonly used by researchers MLL method, Barg method  and the least squares method and that using the method of simulation model  first order autoregressive through the design of a number of simulation experiments and the different sizes of the samples.

A paraffin wax and copper foam matrix were used as a thermal energy storage material in the double passes air solar chimney (SC) collector to get ventilation effect through daytime and after sunset. Air SC collector was installed in the south wall of an insulated test room and tested with different working angles (30^o, 45^o and 60^o). Different SC types were used; single pass, double passes flat plate collector and double pass thermal energy storage box collector (TESB). A computational model based on the finite volume method for transient tw dimensional domains was carried out to describe the heat transfer and storage in the thermal energy storage material of collector. Also, equivalent specific heat metho

The formula of Ijarah and Ijarah ending with ownership is one of the investment formulas in Islamic banks, so this research has shed light on it in order to benefit from the experiences of the research sample banks, This research aims to find a reliable way for Iraqi Islamic banks, namely (leasing and leasing ending with ownership) in order to invest their money without usurious interests, The problem of the research emerges through the lack of awareness of the Iraqi Islamic banks to work with different Islamic financing formulas and their inability to invest their money through the adoption of their administrations for different formulas, including the leasing, and this is reflected in the decrease and fluctuation of its profits, Theref

Were arranged this study on two sections, which included first section comparison between markets proposed through the use of transport models and the use of the program QSB for less costs , dependant the optimal solution  to chose the suggested market  to locate new market that achieve lower costs in the transport of goods from factories (ALRasheed ,ALAmeen , AlMaamun ) to points of sale, but the second part has included comparison of all methods of transport (The least cost method ,Vogels method , Results Approximations method , Total method) depending on the agenda of transport, which includes the market proposed selected from the first section and choose the way in which check the solution first best suited in terms

The research entitled (Image of the Religious Coup in Spain in the Middle Ages) aims to shed light on the prevailing image of the religious coup in Spain during the Middle Aga

تميز الشعر الاندلسي بمجموعة من القيم الجمالية ، تبرز الجمال والقبيح والتراجيدي ، وعبر عن هذه القيم من خلال نظام بنائي جمالي  مميز انسجم وطبيعة تلك القيم

والتراجيديا تتمثل بحالتين ، تتمثل الاولى بتجسيد الموت او البعد وماتبرزه من مآسٍ وحزن والم عند وقوع الحاله فيجسد الشاعر مشاعره واحاسيسه بالرثاء وذكرى الفقيد ويكثر من الشكوى ومايرافقها من حنين ودموع.

وبتنوع مواقف الحزن يبر

        The scholars  are differed  about  the beginning of   feudal,some  says that it has been known  already in  the  oldest   Babylonic  period . while others   think   that has been of the Fourth  Century .some   scholars . believe that it has  began in the  time  of  the caliph al-mutwakil   (232-247 A.H) who made  anew social class from  the  military to support  him The orientlists   wrote  about the differences  between  the feudal  in Islamic  period   and The feudal in Europe

We, at the end of the discussio about Sincere love, are discussing the
idea o platonic spinning i Dr.Ahmad Muhammed AL_Hofi in His book)