A total of 48 experiments were conducted to investigate the impact of slit weir dimensions and locations on the maximum scour depth and scour area created upstream. The slit weir model was a 110 mm slit opening, and it was installed at the end of the working section in a laboratory flume. The flume was 10.0 m long, 30 cm wide, 30 cm deep, and almost middle. It includes a 2 m working section with a mobile bed with 110 mm in thickness. In the mobile bed, two types of nonuniform sand (with a geometric standard deviation of 1.58 and 1.6) were tested separately. The weir dimensions and location were changed with flow rates. Then dimensions of the slit weir were changed from 60 x 110 mm to 60 x 70 mm (width x height), while th

This work describes the effect of temperature on the phase transformation of titanium dioxide (TiO2) prepared using metal organic precursors as starting materials. X-ray diffraction (XRD) was used to investigate the structural properties of TiO2 gels calcined at different temperatures (300, 500, 700) ?C. the results showed that the samples have typical peaks of TiO2 polycrystalline brookite nanopowders after calcined at (300 ?C), which confirmed by (111), (121), (200), (012), (131), (220), (040), (231), (132) and (232) diffraction peaks. Also, XRD diffraction spectra showed the presence of crystallites of anatase with low proportion of rutile phase where calcined at (500 ?C), while rutile phase domains at (700 ?C). The crystallite size of

Corrosion experiments were carried out to investigate the effect of several operating parameters on the corrosion rate and corrosion potential of carbon steel in turbulent flow conditions in the absence and presence of sodium benzoate inhibitor using electrochemical polarization technique. These parameters were rotational velocity (0 - 1.57 m/s), temperature (30oC – 50oC), and time. The effect of these parameters on the corrosion rate and inhibition efficiency were investigated and discussed. It was found that the corrosion rate represented by limiting current increases considerably with increasing velocity and temperature and that it decreased with time due to the formation of corrosion product layer. The corrosion potential shifted t

A condense study was done to compare between the ordinary estimators. In particular the maximum likelihood estimator and the robust estimator, to estimate the parameters of the mixed model of order one, namely ARMA(1,1) model.

Simulation study was done for a varieties the model.  using: small, moderate and large sample sizes, were some new results were obtained. MAPE was used as a statistical criterion for comparison.

Man derives his sense of his humanity through contact with others, he needs them to enhance the continued existence and enter into personal relationships in order to enrich his being, it says Murray (in the presence of necessary physical and social cultural center and it cannot be in isolation).

      And equal to deprive an individual of talking with others and participation in the life stripped of his humanity, nor has achieved a sense of satisfaction, security, love and friendship, but through belonging to the group, which lies in the psychological composition.

      The most important

استهدف البحث التعرف على مستوى أزمة الهوية لدى طلبة المرحلة الإعدادية للسنة الدراسية              (2010-2011) والتعرف على دلالة الفروق الإحصائية في أزمة الهوية تبعا للمتغيرات الآتية :-

أ –المرحلة الدراسية (الصف الرابع – الصف السادس) .                                        &nbs

على الرغم من التقدم العلمي والتكنولوجي للمعلومات فما زالت الذاكرة تقوم بالدور الاساس بغض النظر عن الامكانيات العلمية في العصر الحديث من حيث ان الكثير من مفرادات الثقافة الانسانية ينقل من جيل الى اخر بواستطتها, ومن الصعب تصور حياة نفسية مقصورة على الحافز فقط, اننا لو اقتصرنا على الحافز لكان التفكير غير ممكن لان الذاكرة هي التي تصل الحافز بالماضي وابسط صورها هي الذاكرة الاولية . فلولا الذاكرة لما تكونت ال

يهدف البحث الحالي التعرف على مهارات النجاح الاكاديمي لدى طلبة الجامعة، وكذلك التعرف على دلالة الفروق على وفق الجنس ) ذكور ، أناث ( والتخصص ) علمي ، انساني( ولذلك قامت الباحثة بتبني وترجمة مقياس مهارات النجاح لدينيس Dennis,2262 ، يتكون المقياس من) 12 ( فقرة ومن ) 5( مهارات )مهارة التركيز التواصل التنظيم وإدارة الوقت تحديد الأهداف والتحفيز الاستعداد للاختبارات(، وقد تم التأكد من - - - - خصائصة السايكومترية، تم تطبيق المقياس

The difficulties of language acquisition of the first signs and indicators that are observed in a student who lacks the development of mental knowledge, so are the problems of the language of most problems and deepest because any deficiency in the development of these capabilities affect negatively on the level of intelligence of the students, a student who is characterized by the use of language is reflected positively on the intelligence of language, where (owned by rhetorical) any use of language to persuade others of certain conduct, and capacity to address the construction of linguistic and scientific use to rhetoric or statement, as he earns the student the ability of language to help him fluency of speech with all the clar

The present study aimed to:

1 - To identify the leisure time activities among young people university .

2 - To identify statistically significant differences in leisure time activities among the students of the university depending on the variable.

Gender (male , female ) and the study sample consisted of (152) students from the University of Baghdad College of Education, Ibn al-Haytham was randomly selected by (67) of the males and(85) females and dish them a measure of leisure-time activities that the researcher has ever built and achieved sincerity and firmness , sell statistical treatment showed results that the nature of the activities, leisure time importance in the exercise on according to type males or fem