للكاتب : Ashraf Farah Aswan-Faculty of Engineering, South Valley University, EGYPT ABSTRACT Tropospheric delay is the second major source of error after the ionospheric delay for satellite navigation systems. The transmitted signal could face a delay caused by the troposphere of over 2m at zenith and 20m at lower satellite elevation angles of 10 degrees and below. Positioning errors of …

للكاتب : Ashraf Farah Aswan-Faculty of Engineering-South Valley University-EGYPT ABSTRACT Global Navigation Satellite Systems (GNSS) have an endless number of applications in industry, science, military, transportation and recreation & sports. Two systems are currently in operation namely GPS (the USA Global Positioning System) and GLONASS (the Russian GLObal NAvigation Satellite System), and a third is planned, the European satellite navigation …

للكاتبين : Wafaa M. Shalash, Fatma E. Z. Abouchadi Department of Electronics and Communications Engineering, Faculty of Engineering, Mansoura University, Egypt. ABSTRACTThis paper presents an improved fingerprint verification system by involving an improved fingerprint enhancement stage using a combination of Inverse filtering and Gabor filtering algorithms with dynamic block size in order to improve image quality in the enhancement stage. …

للكاتبين : Kun Liu1, Amr Youssef2 , and Walaa Hamouda1 1 Department of Electrical and Computer Engineering 2Concordia Institute for Information Systems Engineering Concordia University Montreal, Quebec, HEG 1M8, Canadae ABSTRACT:- Several recently proposed directional MAC proto-cols for mobile ad hoc networks incorporate the positions of the destination stations, as well as the interfering ones, in the beamforming process at …

للكاتبين : Nasser H-Ali , Ashor _Alsellami Computer Engineering Department-Faculty of Eng -.Al-fateh University ABSTRACT In the past few years high-speed data transmission over dialed telephone connection or over leased lines has growth rapidly. In this paper a versatile, high speed structure modem was designed .It permits the implementation of several modulation formats with various speed options from the common …

للكاتبين : A.Y. HAIKAL, M.S.M. KSASY , S . F . SARAYA, F . F . AREED Computers & Systems Dept., Faculty of Engineering, Mansoura University   ABSTRACT: – The work proposed in this paper concerns an effective genetic algorithm that works on two levels, neuron-level and blue prints networks-level. The present algorithm differs from standard evolutionary algorithms in that …

للكاتبين : Amal Algammal & Mohamed El-Sharkawi Faculty of Computers and Information – Information Systems Department Cairo University- Cairo – Egypt ABSTRACT: The last several years have seen a great interest in web services paradigm especially in ecommerce, science and telecommunications contexts. The web services paradigm allows rich, flexible, and dynamic interoperation of distributed and heterogeneous web-resident services. The web …

للكاتبين : REZEG K. 1, LASKRI M. T. 2 1Department of computer science Mohamed KHIDER University Biskra BP 145, 07000 Biskra, 2Department of computer science BADJI Mokhtar University Annaba BP 12, 23000 Annaba, ABSTRACT The automatic translation of the human origin texts is a complex strong implementation called to apprehend the open universe textual without any constraints towards nature or …

للكاتبين : Okba Kazar, Mohamed.N Meadi, Amar Nadji Computer science department, Biskra University, 07000, Algeria, ABSTRACT The human face recognition is complex and important problem used in very differents area. This work validates an approach of faces recognition with a reduced time; what we call it "face recognition in real time ". This approach is based on very powerful, very …

للكاتبين : Mohamed. A. Ahmed, M.A Ashour 1, and Hamdy. M. Kelash 2. 1 Dept of Systems and engineering, NCRRT, Atomic Energy Authority. 2Dept. of Computer Science and Engineering Menoufiya University, Faculty of Electronic Engineering, Egypt. ABSTRACT This paper presents a new architecture of S-box based on Multi-path Interconnection Network (MIN), and then implements it on FPGA platform. The proposed …