With warm-hearted and friendly promotion by our Japanese friends Prof. - sushi Ohori, Prof. Tetsuo Ida, and Prof. Zhenjiang Hu, and other distinguished professors and scholars from countries and regions such as Japan, South Korea, Singapore, and Taiwan, the 1st Asian Symposium on Programming Languages andSystems(APLAS2003)tookplaceinBeijing.Wereceived76papers, among which 24 were selected for the proceedings after serious evaluation, which fully demonstrates the high quality of the collected papers. I hereby, on behalf of the Program Committee and the Organization Committee of the symposium, would like to extend the warmest welcome and hearty thanks to all colleagues who attended the symposium, all scholars who generously contributed their papers, and all those who were actively dedicated to the organization of this symposium. Over the past decade, the Asian economy has undergone rapid development. Keeping pace with this accelerated economic growth, Asia has made great he- way in software, integrated circuits, mobile communication and the Internet. All this has laid a ?rm material foundation for undertaking theoretical research on computer science and programming languages. Therefore, to meet the incr- sing demands of the IT market, great opportunities and challenges in advanced research in these ?elds. I strongly believe that in the coming future, with the persistent e?orts of our colleagues, the Asian software industry and research on computer science will be important players in the world economy, on an equal footing with their counterparts in the United States and Europe

This volume contains the proceedings of the Fourth Asian Computing Science Conference (ASIAN98), held December 8{10, 1998, in Manila, the Philippines. The previous three ASIAN conferences were also published as Lecture Notes in Computer Science, Volumes 1023 (Bangkok, 1995), 1179 (Singapore, 1996), and 1345 (Kathmandu, 1997). Initiated in 1995 by the Asian Institute of Technology in partnership with INRIAandUNU, the ASIANconferenceseriesaimsatprovidingaforuminAsia fortheexchangeofthemostrecentresearchideasandresultsincomputerscience andinformationtechnology.Whileeachyearfeaturesseveralemphasizedthemes, the 1998 conference focuses on the research areas of (1) formal reasoning and veri cation, (2) programminglanguages, (3) dataand knowledgerepresentation, and (4) networking and Web computing. There were 43 submissions to the conference, out of which 17 were chosen for presentation and inclusion in this proceedings. The papers were submitted fromAustralia, Brazil, China, France, Germany, India, Italy, Japan, Korea, New Zealand, the Philippines, Russia, Singapore, Spain, Switzerland, Taiwan, Th- land, the United Kindom, and the United States of America. The program c- mittee meeting was held virtually over the Internet. The selection was nalized after a fteen-day period of lively discussion. Each paper was carefully reviewed and received at least three reports. In addition to 17 highly selective papers, this year's conference also features a keynotespeechby Jeannette M.Wing (CarnegieMellonUniversity)onFormal Methods: Past, Present, andFuture, twoinvitedtalksbySusumuHayashi(Kobe University) on Testing Proofs by Examples and Claude Kirchner (INRIA) on The RewritingCalculus as a Semantics ofELAN, and two tutorials by Tomasz Janowski(UNU/IIST)onSemanticsandLogicforProvableFault-Tolerance and R.K. Shyamasundar (TIFR) onMobile Computation: Calculus and

This book constitutes the thoroughly refereed post-workshop proceedings of the Second International Workshop on Types in Compilation, TIC '98, held in Kyoto, Japan in March 1998.
The book presents 13 revised full papers carefully selected during an iterated reviewing process together with three invited papers. The papers are organized in topical sections on typed intermediate languages, program analyses, program transformations and code generation, memory management, partial evaluation and run-time code generation, and distributed computing.

The Fourth International Workshop on Database Programming Languages - Object Models and Languages (DBPL-4) took place in Manhattan, New York City, 30 August-1 September 1993. The areas of interest and the format of DBPL-4 focused on the integration of programming languages, object models, type systems and database systems. As in the previous DBPL workshops, the setting was informal, allowing the participants to actively discuss and argue about the ideas presented in the talks. The comments and remarks made by the participants during and after the presentations were taken into account in the preparation of the final versions of the papers. The result, we believe, is a set of excellent papers. The DBPL sequence is closely related to the sequence of International Workshops on Persistent Object Systems (POS), first started in 1985. While the DBPL workshops focus on language and model issues, the POS workshops have focused on implementation issues; thus the two sequences complement each other. Many researchers participate in both workshop series. The eight sessions of the technical program of DBPL-4 were as follows: 1. Bulk types and their query languages (two sessions). 2. Object models and languages. 3. Data types with order. 4. Mechanisms to support persistence, reflection, and extensibility. 5. Query optimization and integrity constraints. 6. Logic-based models. 7. Implementation and performance issues.