Software is the essential enabler for the new economy and science. It creates new markets and new directions for a more reliable, flexible, and robust society. It empowers the exploration of our world in ever more depth. However, software often falls short behind our expectations. Current software methodologies, tools, and techniques remain expensive and not yet reliable for a highly changeable and evolutionary market. Many approaches have been proven only as case-by-case oriented methods.

This book presents a number of new trends and theories in the direction in which we believe software science and engineering may develop to transform the role of software and science in tomorrow's information society.

This book is an attempt to capture the essence of a new state of art in software science and its supporting technology. The book also aims at identifying the challenges such a technology has to master. It contains papers accepted at the Fifth International Conference on New Trends in software Methodology Tools, and Techniques, V, (SoMeT_06) held in Quebec, Canada, from 25th to 27th October 2006, (url: www.somet.soft.iwate-pu.ac.jp/somet_06). This workshop had brought together researchers and practitioners to share their original research results and practical development experiences in software science, and its related new challenging technology.

One of the important issues addressed in this book is software security tools and techniques. Another example we challenge in this conference is, Lyee methodology as a new Japanese emerged software methodology that has been patented in several countries in Europe, Asia, and America. But it is still in its early stage of emerging as a new software style. This book and the series it continues will also contribute to elaborate on such new trends and related academic research studies and development.

A major goal of this book was to gather scholars from the international research community to discuss and share research experiences on new software methodologies, and formal techniques. The book also investigated other comparable theories and practices in software science, including emerging technologies, from their computational foundations in terms of models, methodologies, and tools. These are essential for developing a variety of information systems research projects and to assess the practical impact on real-world software problems.

For an outline of the past series of related events that contributed to this publication are SoMeT_02 that was held October 3–5, 2002, in Sorbonne, Paris, France. SoMeT_03 was held in Stockholm, Sweden, SoMeT_04 held in Leipzig, Germany, SoMeT_05 held in Tokyo, Japan and this publication covers SoMeT_06; held in Quebec, Canada. These events, also initiate the forthcoming SoMeT_07, to be organized in Rome, Italy in November 2007, (url: www.somet.soft.iwate-pu.ac.jp/somet_07/).

This book participates to provide an opportunity for exchanging ideas and experiences in the field of software technology opening up new avenues for software development, methodologies, tools, and techniques, especially, software security and program coding diagnosis and related software maintenance techniques aspects.

The Lyee framework for example, captures the essence of the innovations, controversies, challenges and possible solutions of the software industry. This world wide patented software approach was born and enriched from experience, and it is time, and again through SoMeT_06 to try to let it stimulate the academic research on software engineering attempting to close the gap so far existed between theory and practice. We believe that this book creates an opportunity for us in the software science community to think about where we are today and where we are going.

The book is a collection of 28 carefully reviewed best-selected papers by the reviewing committee.

This book covers the following areas:

• Software engineering aspects on software security, programs diagnosis and maintenance

• Static and dynamic analysis on Lyee-oriented software performance model

• Software security aspects on Java mobile code, and networking

• Practical artefact on software security, software validation and diagnosis

• Software optimization and formal methods

• Requirement engineering and requirement elicitation

• Software methodologies and Lyee oriented software techniques

• Automatic software generation, reuse, and legacy systems

• Software quality and process assessment

• Intelligent software systems and evolution

• End-user requirement engineering and programming environment

• Ontology and philosophical aspects on software engineering

• Business software models and other kinds of software application models, based on Lyee theory

All papers published in this book are carefully reviewed selected by the SOMET international reviewing committee. Each paper has been reviewed by three and up to four reviewers and has been revised based on the review reports. The papers were reviewed on the basis of technical soundness, relevance, originality, significance, and clarity.

This book outcome is also a collective effort from all the Lyee International project collaborators and industrial supporters. We also, gratefully thank Iwate Prefectural University, University of Laval, Catena Co., ISD, Ltd, SANGIKYO co., and others for their overwhelming support, on this work. We specially, are thankful to the review committee and others who participated in the review of all submitted papers and thanks also for the hot discussion we have had on the reviews evaluation meetings that selected those contributed in book.

This outcome is another milestone in mastering new challenges on software and its new promising technology, within SoMeT's consecutive events. Also, it gives the reader new insights, inspiration and concrete material to elaborate and study this new technology.

Also, at last and not least, we would like to thank and acknowledge the support of the University of Leipzig, Telematik and e-Business group for allowing us to use the Paperdyne System as a conference-supporting tool during all the phases on review transactions.

The Editors