Includes bibliographic references and indexes.

Pt. 1. Informational Systems and Information Technologies (ISIT) Workshop. Authentication Authorization Accounting (AAA) Workshop. Virtual Reality in Scientific Applications and Learning (VRSAL 2005) Workshop. Pattern Recognition and Ubiquitous Computing Workshop -- Pt. 2. Approaches or Methods of Security Engineering Workshop. Information Security and Hiding (ISH 2005) Workshop. Modeling of Location Management in Mobile Information Systems Workshop. Intelligent Multimedia Services and Synchronization in Mobile Multimedia Networks Workshop. Ubiquitous Web Systems and Intelligence Workshop. Modelling Complex Systems Workshop -- Pt. 3. Grid Computing and Peer-to-Peer (P2P) Systems Workshop. Spatial Analysis and Gis: Local or Global? Workshop. Computer Graphics and Rendering Workshop. Data Mining and Bioinformatics Workshop. Parallel and Distributed Computing Workshop. Symbolic Computation, SC 2005 Workshop. Specific Aspects of Computational Physics for Modeling Suddenly-Emerging Phenomena Workshop. Internet Communications Security (WICS) Workshop. Component Based Software Engineering and Software Process Model Workshop. Computer Graphics and Geometric Modeling (TSCG 2005) Workshop. Methodology of Information Engineering Workshop -- Pt. 4. Information and Communication Technology (ICT) Education Workshop. Digital Device for Ubiquitous Computing Workshop. Optimization: Theories and Applications (OTA) 2005 Workshop. General tracks.

The four-volume set LNCS 3480-3483 constitutes the refereed proceedings of the International Conference on Computational Science and Its Applications, ICCSA 2005, held in Singapore in May 2005.The four volumes present a total of 540 papers selected from around 2700 submissions. The papers span the whole range of computational science, comprising advanced applications in virtually all sciences making use of computational techniques as well as foundations, techniques, and methodologies from computer science and mathematics, such as high performance computing and communication, networking, optimization, information systems and technologies, scientific visualization, graphics, image processing, data analysis, simulation and modelling, software systems, algorithms, security, multimedia etc.