Informatics Engineering and Information Science International Conference, ICIEIS 2011, Kuala Lumpur, Malaysia, November 14-16, 2011, Proceedings, Part IV - Abd Manaf, Azizah; Sahibuddin, Shamsul; Ahmad, Rabiah; Mohd Daud, Salwani; El-Qawasmeh, Eyas (Springer Berlin Heidelberg : Imprint: Springer, 2011)