يمر العالم بمرحلة انتقالية تموج بتحولات جذرية عميقة وشاملة في كافة المجالات، مرحلة تنكسر فيھا القيود وتلغى الحدود وتنفتح الأسواق ، وتشتعل المنافسة، ويتعاظم دور التكنولوجيا الحديثة التي تلعب دوراً رئيسا ً في إحداث ھذه التحولات وأھمھا التحول من الأساليب التقليدية في الإدارة إلى الأساليب الإلكترونية، وبات مصطلح الحكومة الإلكترونية ھو عنصر تميز المؤسسات والهيئات والدول. يسعى هذا البحت إلى إتاحة المحتوى العلمي للإدارة الإلكترونية وذلك من خلال سرد لمحة تاريخية عنها ومميزاتها وسبيل الإستفادة منها بجميع المجالات وخاصة بمجال التعليم والتطرق الي جامعة طرابلس كحالة دراسية.
وائل صالح محمد أبوغريس, عطية محمود البحباح, محمد أحمد مغيدر(6-2022)

Abstract Most of the controllers used in industries are of PID type, this is because they have simple structure and their usage is well known among industrial specialists. The tuning of controllers is the crucial issue in the overall control loop design in order to obtain a satisfactory performance response. Over the past decades many tuning techniques were developed to adjust the controller parameters. Most of these techniques have the disadvantages of giving a combination of heavy oscillatory response, large overshoot, and long settling and rise time. This work presents a fuzzy logic-PID scheme, the basic concept behind this scheme is to combine the conventional PID controller with the use of fuzzy logic concept. The PID controller regulates the process, while the fuzzy logic part adjusts the proportional gain of the controller. This scheme will be used to overcome the previous disadvantages and to improve the performance of the conventional controller. The effectiveness of fuzzy logic-PID scheme has been analyzed through computer simulation using MATLAB. The results have been compared with those of Ziegler-Nichols, Chien-Hrones-Reswick, Cohen-Coon, Optimum PID controller and a PID with constant and variable weighting factor. This comparison has shown a considerable improvement in the performance of the transient response for different simulated processes
علي عبدالرحمن بن عاشور (2008)

AbstractThis paper examines the process of sending an image over wireless mobile Channels with errors while maintaining bandwidth, transmission speed and image quality. With the tremendous development in networks, new wireless channels have been opened that threaten the security of data transmitted through networks and communication channels, and from this emerged Encryption techniques to increase the security of the transmitted data, and since the digital image compression algorithm is a process to reassemble the parts of the image so that it takes less space, but this increases the impact of the error extension in sending compressed digital images and greatly reduces the quality of the received image. This prompts us in this paper to study the performance of HQAM technology for the purpose of transmitting image data over wireless communication channels containing errors. In this paper, image quality performance has been evaluated by the BER, SNR, PSNR, SSIM, and Correlation evaluation criteria. The simulated results show that there is an improvement in the image quality received using the proposed technique.
wael saleh mohamed abughres, , , Ashrf Alzrouk Almagdob1, Ahmed B. Abdurrhman, Ibrahim A.Nasir, (9-2020)