Visualization in scientific computing is getting more and more attention from many people. Especially in relation with the fast increase of com­ puting power, graphic tools are required in many cases for interpreting and presenting the results of various simulations, or for analyzing physical phenomena. The Eurographics Working Group on Visualization in Scientific Com­ puting has therefore organized a first workshop at Electricite de France (Clamart) in cooperation with ONERA (Chatillon). A wide range of pa­ pers were selected in order to cover most of the topics of interest for the members of the group, for this first edition, and 26 of them were presented in two days. Subsequently 18 papers were selected for this volume. 1'he presentations were organized in eight small sessions, in addition to discussions in small subgroups. The first two sessions were dedicated to the specific needs for visualization in computational sciences: the need for graphics support in large computing centres and high performance net­ works, needs of research and education in universities and academic cen­ tres, and the need for effective and efficient ways of integrating numerical computations or experimental data and graphics. Three of those papers are in Part I of this book. The third session discussed the importance and difficulties of using stan­ dards in visualization software, and was related to the fourth session where some reference models and distributed graphics systems were discussed. Part II has five papers from these sessions.

I General Requirements.- 1 Scientific Visualization in a Supercomputer Network.- 2 Visualization Services in Large Scientific Computing Centres.- 3 The Visualisation of Numerical Computation.- II Formal Models, Standards and Distributed Graphics.- 4 Performance Evaluation of Portable Graphics Software and Hardware for Scientific Visualization.- 5 Visualization of Scientific Data for High Energy Physics: Basic Architecture and a Case Study.- 6 The IRIDIUM Project: Post-Processing and Distributed Graphics.- 7 Towards a Reference Model for Scientific Visualization Systems.- 8 Interactive Scientific Visualisation: A Position Paper.- III Applications.- 9 HIGHEND - A Visualisation System for 3D Data with Special Support for Postprocessing of Fluid Dynamics Data.- 10 Supercomputing Visualization Systems for Scientific Data Analysis and Their Applications to Meteorology.- IV Rendering Techniques.- 11 Rendering Lines on Curved Surfaces.- 12 Interactive 3D Display of Simulated Sedimentary Basins.- 13 Visualization of 3D Scalar Fields Using Ray Casting.- 14 Volume Rendering and Data Feature Enhancement.- 15 Visualization of 3D Empirical Data: The Voxel Processor.- 16 Spatial Editing for Interactive Inspection of Voxel Models.- V Interaction.- 17 The Rotating Cube: Interactive Specification of Viewing for Volume Visualization.- 18 Chameleon: A Holistic Approach to Visualisation.- Colour Plates (see list on p. XII).- List of Authors.