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The International Journal on Advances in Software is published by IARIA. ISSN: 1942-2628 journals site: http://www.iariajournals.org contact: [email protected] Responsibility for the contents rests upon the authors and not upon IARIA, nor on IARIA volunteers, staff, or contractors. IARIA is the owner of the publication and of editorial aspects. IARIA reserves the right to update the content for quality improvements. Abstracting is permitted with credit to the source. Libraries are permitted to photocopy or print, providing the reference is mentioned and that the resulting material is made available at no cost. Reference should mention: International Journal on Advances in Software, issn 1942-2628 vol. 5, no. 1 & 2, year 2012, http://www.iariajournals.org/software/ The copyright for each included paper belongs to the authors. Republishing of same material, by authors or persons or organizations, is not allowed. Reprint rights can be granted by IARIA or by the authors, and must include proper reference. Reference to an article in the journal is as follows: <Author list>, “<Article title>” International Journal on Advances in Software, issn 1942-2628 vol. 5, no. 1 & 2, year 2012,<start page>:<end page> , http://www.iariajournals.org/software/ IARIA journals are made available for free, proving the appropriate references are made when their content is used. Sponsored by IARIA www.iaria.org Copyright © 2012 IARIA International Journal on Advances in Software Volume 5, Number 1 & 2, 2012 Editor-in-Chief Jon G. Hall, The Open University - Milton Keynes, UK Editorial Advisory Board Hermann Kaindl, TU-Wien, Austria Herwig Mannaert, University of Antwerp, Belgium Editorial Board Witold Abramowicz, The Poznan University of Economics, Poland Abdelkader Adla, University of Oran, Algeria Syed Nadeem Ahsan, Technical University Graz, Austria / Iqra University, Pakistan Marc Aiguier, École Centrale Paris, France Rajendra Akerkar, Western Norway Research Institute, Norway Zaher Al Aghbari, University of Sharjah, UAE Riccardo Albertoni, Istituto per la Matematica Applicata e Tecnologie Informatiche “Enrico Magenes” Consiglio Nazionale delle Ricerche, (IMATI-CNR), Italy / Universidad Politécnica de Madrid, Spain Ahmed Al-Moayed, Hochschule Furtwangen University, Germany Giner Alor Hernández, Instituto Tecnológico de Orizaba, México Zakarya Alzamil, King Saud University, Saudi Arabia Frederic Amblard, IRIT - Université Toulouse 1, France Vincenzo Ambriola , Università di Pisa, Italy Renato Amorim, University of London, UK Andreas S. Andreou, Cyprus University of Technology - Limassol, Cyprus Annalisa Appice, Università degli Studi di Bari Aldo Moro, Italy Philip Azariadis, University of the Aegean, Greece Thierry Badard, Université Laval, Canada Muneera Bano, International Islamic University - Islamabad, Pakistan Fabian Barbato, Technology University ORT, Montevideo, Uruguay Barbara Rita Barricelli, Università degli Studi di Milano, Italy Gabriele Bavota, University of Salerno, Italy Grigorios N. Beligiannis, University of Western Greece, Greece Noureddine Belkhatir, University of Grenoble, France Imen Ben Lahmar, Institut Telecom SudParis, France Jorge Bernardino, ISEC - Institute Polytechnic of Coimbra, Portugal Rudolf Berrendorf, Bonn-Rhein-Sieg University of Applied Sciences - Sankt Augustin, Germany Ateet Bhalla, NRI Institute of Information Science and Technology, Bhopal, India Ling Bian, University at Buffalo, USA Kenneth Duncan Boness, University of Reading, England Pierre Borne, Ecole Centrale de Lille, France Farid Bourennani, University of Ontario Institute of Technology (UOIT), Canada Narhimene Boustia, Saad Dahlab University - Blida, Algeria Hongyu Pei Breivold, ABB Corporate Research, Sweden Carsten Brockmann, Universität Potsdam, Germany Mikey Browne, IBM, USA Antonio Bucchiarone, Fondazione Bruno Kessler, Italy Georg Buchgeher, Software Competence Center Hagenberg GmbH, Austria Dumitru Burdescu, University of Craiova, Romania Martine Cadot, University of Nancy / LORIA, France Isabel Candal-Vicente, Universidad del Este, Puerto Rico Juan-Vicente Capella-Hernández, Universitat Politècnica de València, Spain Jose Carlos Metrolho, Polytechnic Institute of Castelo Branco, Portugal Alain Casali, Aix-Marseille University, France Alexandra Suzana Cernian, University POLITEHNICA of Bucharest, Romania Yaser Chaaban, Leibniz University of Hanover, Germany Savvas A. Chatzichristofis, Democritus University of Thrace, Greece Antonin Chazalet, Orange, France Jiann-Liang Chen, National Dong Hwa University, China Shiping Chen, CSIRO ICT Centre, Australia Wen-Shiung Chen, National Chi Nan University, Taiwan Zhe Chen, College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, China PR Po-Hsun Cheng, National Kaohsiung Normal University, Taiwan Yoonsik Cheon, The University of Texas at El Paso, USA Lau Cheuk Lung, INE/UFSC, Brazil Robert Chew, Lien Centre for Social Innovation, Singapore Andrew Connor, Auckland University of Technology, New Zealand Rebeca Cortázar, University of Deusto, Spain Noël Crespi, Institut Telecom, Telecom SudParis, France Carlos E. Cuesta, Rey Juan Carlos University, Spain Duilio Curcio, University of Calabria, Italy Mirela Danubianu, "Stefan cel Mare" University of Suceava, Romania Paulo Asterio de Castro Guerra, Tapijara Programação de Sistemas Ltda. - Lambari, Brazil Cláudio de Souza Baptista, University of Campina Grande, Brazil Maria del Pilar Angeles, Universidad Nacional Autonónoma de México, México Rafael del Vado Vírseda, Universidad Complutense de Madrid, Spain Giovanni Denaro, University of Milano-Bicocca, Italy Hepu Deng, RMIT University, Australia Nirmit Desai, IBM Research, India Vincenzo Deufemia, Università di Salerno, Italy Leandro Dias da Silva, Universidade Federal de Alagoas, Brazil Javier Diaz, Indiana University, USA Nicholas John Dingle, University of Manchester, UK Roland Dodd, CQUniversity, Australia Aijuan Dong, Hood College, USA Suzana Dragicevic, Simon Fraser University- Burnaby, Canada Cédric du Mouza, CNAM, France Ann Dunkin, Palo Alto Unified School District, USA Jana Dvorakova, Comenius University, Slovakia Hans-Dieter Ehrich, Technische Universität Braunschweig, Germany Jorge Ejarque, Barcelona Supercomputing Center, Spain Atilla Elçi, Süleyman Demirel University, Turkey Khaled El-Fakih, American University of Sharjah, UAE Gledson Elias, Federal University of Paraíba, Brazil Sameh Elnikety, Microsoft Research, USA Fausto Fasano, University of Molise, Italy Michael Felderer, University of Innsbruck, Austria João M. Fernandes, Universidade de Minho, Portugal Luis Fernandez-Sanz, University of de Alcala, Spain Felipe Ferraz, C.E.S.A.R, Brazil Adina Magda Florea, University "Politehnica" of Bucharest, Romania Wolfgang Fohl, Hamburg Universiy, Germany Simon Fong, University of Macau, Macau SAR Gianluca Franchino, Scuola Superiore Sant'Anna, Pisa, Italy Naoki Fukuta, Shizuoka University, Japan Martin Gaedke, Chemnitz University of Technology, Germany Félix J. García Clemente, University of Murcia, Spain José García-Fanjul, University of Oviedo, Spain Felipe Garcia-Sanchez, Universidad Politecnica de Cartagena (UPCT), Spain Michael Gebhart, Gebhart Quality Analysis (QA) 82, Germany Tejas R. Gandhi, Virtua Health-Marlton, USA Andrea Giachetti, Università degli Studi di Verona, Italy Robert L. Glass, Griffith University, Australia Afzal Godil, National Institute of Standards and Technology, USA Luis Gomes, Universidade Nova Lisboa, Portugal Diego Gonzalez Aguilera, University of Salamanca - Avila, Spain Pascual Gonzalez, University of Castilla-La Mancha, Spain Björn Gottfried, University of Bremen, Germany Victor Govindaswamy, Texas A&M University, USA Gregor Grambow, Aalen University, Germany Carlos Granell, European Commission / Joint Research Centre, Italy Christoph Grimm. TU Wien, Austria Michael Grottke, University of Erlangen-Nuernberg, Germany Vic Grout, Glyndwr University, UK Ensar Gul, Marmara University, Turkey Richard Gunstone, Bournemouth University, UK Zhensheng Guo, Siemens AG, Germany Phuong H. Ha, University of Tromso, Norway Ismail Hababeh, German Jordanian University, Jordan Herman Hartmann, University of Groningen, The Netherlands Jameleddine Hassine, King Fahd University of Petroleum & Mineral (KFUPM), Saudi Arabia Tzung-Pei Hong, National University of Kaohsiung, Taiwan Peizhao Hu, NICTA, Australia Chih-Cheng Hung, Southern Polytechnic State University, USA Edward Hung, Hong Kong Polytechnic University, Hong Kong Noraini Ibrahim, Universiti Teknologi Malaysia, Malaysia Anca Daniela Ionita, University "POLITEHNICA" of Bucharest, Romania Chris Ireland, Open University, UK Kyoko Iwasawa, Takushoku University - Tokyo, Japan Mehrshid Javanbakht, Azad University - Tehran, Iran Wassim Jaziri, ISIM Sfax, Tunisia Dayang Norhayati Abang Jawawi, Universiti Teknologi Malaysia (UTM), Malaysia Jinyuan Jia, Tongji University. Shanghai, China Maria Joao Ferreira, Universidade Portucalense, Portugal Ahmed Kamel, Concordia College, Moorhead, Minnesota, USA Teemu Kanstrén, VTT Technical Research Centre of Finland, Finland Nittaya Kerdprasop, Suranaree University of Technology, Thailand Ayad ali Keshlaf, Newcastle University, UK Nhien An Le Khac, University College Dublin, Ireland Sadegh Kharazmi, RMIT University - Melbourne, Australia Kyoung-Sook Kim, National Institute of Information and Communications Technology, Japan Youngjae Kim, Oak Ridge National Laboratory, USA Roger "Buzz" King, University of Colorado at Boulder, USA Cornel Klein, Siemens AG, Germany