The papers in this publication comprise the proceedings of Indonesian Students' Scientific Meeting (ISSM) 2008. They reflect the authors’ opinions and the contents are reproduced without change. Each author is responsible for the content of his/her own paper. All opinions expressed in the papers are those of the authors and are not binding to the ISSM 2008 Organizing Committee. Moreover, their inclusion in this publication does not necessarily constitute endorsement by the ISSM 2008 Organizing Committee. The ISSM 2008 Organizing Committee accepts no liability related to any material used in the papers in this proceeding.