Scientific and Technical Bulletin, Series: Electrotechnics, Electronics, Automatic Control and Computer Science

The Electrotechnics, Electronics, Automatic Control and Computer Science series of the Scientifical and Technical Bulletin of the "Aurel Vlaicu" University of Arad will devote itself to the dissemination of the original research results, technical advances and new items in Electrical and Computers Engineering and in Knowledge Engineering.

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Honorary Editor:

Lotfi A. Zadeh - University of California, Berkeley (USA)

Editor-in-Chief;

Valentina E. Bălaş - "Aurel Vlaicu" University of Arad (Romania)

Associate Editors:

Lakhmi C. Jain, University of Canberra, (Australia)
Michio Sugeno, Tokyo Institute of Technology, (Japan)
Anca Ralescu – University of Cincinatti (USA)
Dan Ralescu – University of Cincinatti (USA)
Tsung-Chih Lin - Feng Chia University Taichung, (Taiwan) 
Rajeeb Dey, National Institute of Technology, Silchar, Assam, (India)
Seshadhri Srinivasan  - Berkeley Education Alliance for Research in Singapore (BEARS), (Singapore)
Sanjiban Sekhar Roy - VIT University, Vellore, (India)
Modi Bhuvan - AT&T, (USA)
Nilanjan Dey – Techno India College of Technology, (India)
Shahabodin Shamshirband, Ton Duc Thang University, Ho Chi Minh City, (Vietnam)
Camelia Pintea, Technical University Cluj-Napoca, (Romania)
Ali Reza Khanteymoori, University of Zanjan, (Iran)


Editorial Board:


Mohammad Pourmahmood Aghababa - Urmia University of Technology (Iran)
Ahmad Taher Azar - Benha University (Egypt)
Jair Minoro Abe - Instituto de Ciências Exatas e Tecnologia, São Paulo (Brazil)
Amira Ashour – Tanta University (Egypt)
Preeti Bajaj - G. H. Raisoni College of Engineering, Nagpur (India)
Marius M. Bălaş - "Aurel Vlaicu" University of Arad (Romania)
Dana Bălaş Timar - "Aurel Vlaicu" University of Arad (Romania)
Mokhtar Beldjehem - St. Anne's University (Canada)
Nicolae Budişan - Politehnica University of Timişoara (Romania)
Cornel Barna - Contact Plus SRL Arad (Romania)
Pamela McCauley Bush - University of Central Florida (USA)
Marius Buzera - Technical College "Gheorghe Magheru" Tg. Jiu (Romania)
Amlan Chakrabarti – University of Calcutta (India)
Mircea Ciugudean - Politehnica University of Timişoara (Romania)
Mihaela Costin - Romanian Academy, Computer Science Institute, Iaşi (Romania)
Radu Dogaru - Politehnica University of Bucharest (Romania)
Toma L. Dragomir - Politehnica University of Timişoara (Romania)
Ioan Dzitac - "Aurel Vlaicu" University of Arad (Romania)
Simona Dzitac - University of Oradea (Romania)
Florin Filip - Romanian Academy (Romania)
Voicu Groza - University of Ottawa (Canada)
Ankur Gupta – MIET Jammu (India)
Hacene Habbi - University of Boumerdès (Algier)
Chihab Hanachi - IRIT Laboratory, University Toulouse (France)
Jude Hemanth - Karunya University , Tamilnadu (India)
Jan Jantzen - Technical University of Denmark, Kongens Lyngby (Denmark)
Laszlo T. Koczy - University of T. E., Budapest and S. I. University Győr (Hungary)
Ioan Emeric Köles - "Aurel Vlaicu" University of Arad (Romania)
Veljko Milutinovic - University of Belgrade (Serbia)
Corina Mnerie - "Aurel Vlaicu" University of Arad (Romania)
Valentin Muller - "Aurel Vlaicu" University of Arad (Romania)
Kazumi Nakamatsu - University of Hyogo (Japan)
Viorel Nicolau - Dunărea de Jos University of Galaţi (Romania)
Stephan Olariu - Old Dominion University, Norfolk (USA)
Emil Petriu - University of Ottawa (Canada)
Daniela E. Popescu - University of Oradea (Romania)
Dumitru Popescu - Politehnica University of Bucharest (Romania)
Nicolae Popescu-Bodorin - "Aurel Vlaicu" University of Arad (Romania)
Octavian Proştean - Politehnica University of Timişoara (Romania)
Ali Asghar Rahmani Hosseinabadi - Islamic Azad University, Amol (Iran)
Haroon Rasheed – Bahria University, Karachi (Pakistan)
Sahondranirina Ravonialimanana - Universite de Fianarantsoa (Madagascar)
Mehdi Roopaei - University of Texas at San Antonio (USA)
Binoy Krishna Roy – National Institute of Technology, Silchar, Assam (India)
Imre Rudas – Obuda University Budapest (Hungary)
Rudolf Seising - Friedrich-Schiller-University Jena, Germany
Fuqian Shi - Zhejiang University (China)
Kostas Sirlantzis - University of Kent (UK)
Tiberiu Spircu - "Carol Davila" University of Medicine and Pharmacy, Bucharest (Romania)
Horia Nicolai Teodorescu - "Gheorghe Asachi" Technical University Iaşi (Romania)
Annamaria Varkoniy-Koczy – Obuda University Budapest (Hungary)
Pandian Vasant - Petronas University of Technology (Malaysia)
Mircea Vlăduţiu - Politehnica University of Timişoara (Romania)
Djuro G. Zrilic - New Mexico Highlands University (USA)

Editorial Manager


Noemi Clara Rohatinovici - "Aurel Vlaicu" University of Arad (Romania)


Vol 5, No 4 (2008): Scientific and Technical Bulletin

Full Issue

View or download the full issue Vol 5, No 4 (2008)

Table of Contents

Articles

Valentina Emilia BĂLAŞ, Marius BĂLAȘ
7 - 14
Marius BĂLAȘ, Valentina BĂLAȘ
15 - 26
Cornel BARNA
27 - 34
Marius BUZERA, Lucian GAL, Zorela REBEDEA
35 - 44
Solo RANDRIAMAHALEO, RAFILIPOJAONA ., Sahondra RAVONIALIMANANA
45 - 58