زاد الاهتمام بالأطفال ذوي اضطراب الانتباه المصحوب بالنشاط الزائد نظراً لانتشاره بين الأطفال في عمر المرحلة الابتدائية حيث تراوحت نسبته ما بين  3% إلى 20%  ومعظمهم من الذكور ، وأن انتشاره يقع في مختلف الطبقات الاجتماعية بالنسبة لعوائل هؤلاء الأطفال كما أن المشكلات المتعلقة به لا تنتهي بانتهاء مرحلة الطفولة ، وغالباً ما تمتد إلى مرحلة المراهقة حيث توصل ويز و هتكمانWeiss&Hechtman,1989  إلى أن هناك علامات م

This research considers a proposed mechanism relying on frictional interactions between the grasped object and the gripper, thus attaining a case of self-locking condition for a tendon type robotic gripper. A mathematical model was derived for this proposed mechanism, upon which a special purpose apparatus was fabricated and tested. Both results, theoretically and experimentally, are in good agreement, showing that the weight of the grasped object played a major role in attaining the self-locking condition.

There is a great deal of systems dealing with image processing that are being used and developed on a daily basis. Those systems need the deployment of some basic operations such as detecting the Regions of Interest and matching those regions, in addition to the description of their properties. Those operations play a significant role in decision making which is necessary for the next operations depending on the assigned task. In order to accomplish those tasks, various algorithms have been introduced throughout years. One of the most popular algorithms is the Scale Invariant Feature Transform (SIFT). The efficiency of this algorithm is its performance in the process of detection and property description, and that is due to the fact that

In order to select the optimal tracking of fast time variation of multipath fast time variation Rayleigh fading channel, this paper focuses on the recursive least-squares (RLS) and Extended recursive least-squares (E-RLS) algorithms and reaches the conclusion that E-RLS is more feasible according to the comparison output of the simulation program from tracking performance and mean square error over five fast time variation of Rayleigh fading channels and more than one time (send/receive) reach to 100 times to make sure from efficiency of these algorithms.