صفوان سلمان قسام, أديب زيد عقيل

كلية الآداب والعلوم الانسانية-جامعة دمشق · سوريا

Abdelmalrk Khezzar, Radouane Bousseksou

كلية العلوم الهندسية-جامعة الاخوة منتورى - قسنطينة 1 · الجزائر

جابر عبدالله جابر, سوسن كمال ثامر

كلية العلوم-جامعة النهرين · العراق

With the explosion of multimedia data (videos, audios, images, and Web pages), people have no time to look at this huge data, and human attention has become a precious resource. So, a way must be found to automatically analyze, classify, summarize, discover and characterize trends in it, and to automatically flag anomalies. Many researchers have felt the need for data mining methods to deal with this amount of data. The Multimedia Mining work includes various kinds of data like video, audio, image, etc. This work includes a set of fields, which process huge information, like clustering, recognition, classification, etc. Video Mining is the most important kind of mining because the video became a popular easy way to deliver a message or an idea like the video chat, movies, advertisements and also a way for protection like in surveillance videos and a lot of other uses that the world is full of. In this research, a Video Retrieval System (VRS) was implemented. This system has two phases: enrollment phase and query-matching phase. The enrollment phase constructs the videos' database. This database contains different classes that clustered according to their textural (Run Length) or shape (Moment Invariant) features with different color models (HSL or YCbCr).The clustering process is accomplished using K-means clustering algorithm. While, query-matching phase used for retrieving videos which are similar to an input one. Before extracting features, the input video is cut into several shots depending on the difference between successive frames histograms, then calculating the features to a chosen shot to retrieve the similar shots from the videos' database. The performance of the system was computed using recall and precision measures. In VRS, an encouraged good result was obtained.

بوزة كاهنة, صفية إفروفة

كلية العلوم الانسانية والاجتماعية-جامعة مولود معمري - تيزي وزو · الجزائر

هدفت هذه الدراسة إلى الكشف على" المرافقة النفسية المقدمة من طرف مستشار التوجيه والإرشاد المدرسي للتلاميذ المقبلين على شهادة البكالوريا" ومعرفة ما إذا هناك فروق في الدرجة الكلية لمقياس المرافقة النفسية بين المعيدين وغير المعيدين لشهادة البكالوريا ". تكونت عينة الدراسة من (100)تلميذ وتلميذة (37ذكور و 63اناث)، ولغرض جمع بيانات الدراسة إستخدم مقياس المرافقة النفسية المعد من طرف الباحثة الملياني شريفة (2019) بعد التأكد من خصائصه السيكومترية، اعتمد فيها المنهج الوصفي ، حيث اسفرت الدراسة على النتائج التالية:مستوى المرافقة النفسية التي يقدمها مستشار التوجيه والإرشاد المدرسي للتلاميذ المقبلين على إمتحان شهادة البكالوريا متوسطلا توجد فروق ذات دلالة إحصائية في الدرجة الكلية لمقياس المرافقة النفسية بين المعيدين والغير معيدين لإمتحان البكالوريا.لا توجد فروق ذات دلالة إحصائية في الدرجة الكلية لمقياس المرافقة النفسية لدى أفراد العينة تبعا لمتغير الجنس.

عمار عبدالهادي مهدي

الجامعة التكنولوجية · العراق

وحيد بن سونة, ابو بكر الصديق بوخليفة, نور الدين زابشي

معهد التربية البدنية والرياضية-جامعة عبد الحميد بن باديس مستغانم · الجزائر

أحمد وليد حسين الشبلي, عبد الكريم جليل كاظم

كلية الهندسة-جامعة بابل · العراق

Despite the increasing demand for the application of three-dimensional extrusion of various shaped sections through the convergent dies, so far little work has been done using a general systematic analysis to predict the total extrusion pressure as well as the induced stresses in the extrusion process throughout the polynomial streamlined dies. This research is divided into three parts: The first part: Theoretical Consideration In this part, a general analysis using the three-dimensional upper-bound method based on deriving a continuous velocity field has been carried out. By using the proposed method, the velocity and strain rate components at any point in the deformation zone can be obtained analytically. The strain hardening phenomenon in the extruded products was taken into consideration. Extrusion through mathematically contoured dies plays a critical role in the improvement of surface integrity of extruded products, so a general die surface contour using a blending function and trigonometric relationships was proposed. Third- and fifth-degree polynomial streamline functions of the die were assumed in this study in order to determine which of them gives better results. Based on the above analytical analysis, special dies were designed for different shaped sections such as circular, polygonal, and rhomboidal sections, and then the upper-bound solutions based on load were determined for each section. The effects of the friction factor in the range (0-1), shape complexity, percentage of area reduction in the range (10-90)%, and relative die length in the range (0.5-4) on the total relative extrusion pressure were found and discussed. It was concluded from the analytical results that the streamlined extrusion dies designed based on the third-degree polynomial profile are superior to the dies designed based on the fifth-degree polynomial equation. The analytical results obtained in this study were compared with the analytical results of other researchers and found to be in good agreement.

دراوسي مسعود , عامر عميريو

كلية العلوم الاقتصدية وعلوم التسيير‎-جامعة سعد دحلب - البليدة-جامعة سعد دحلب - البليدة · الجزائر

Safiya Said Alsiyabia , Syed Bashir Ahmad

كلية الاداب والعلوم الاجتماعية-جامعة السلطان قابوس · عمان

لبنى العزاوي

الجامعة التكنولوجية · العراق