Contracts Scenarios And Prototypes

What is this Book About? At the beginning of the 21st century, computer systems—and especially so- ware—play an important role in our society. Software is contained in virtually every technical device that we use in everyday life (e.g., cellular phones and cars). Furthermore, computers and their software are used for leisure purposes at home (the Internet and computer games), at the office (e.g., writing letters and order processing), and for more complicated tasks such as controlling steel plants or insuring flight safety. Therefore, the quality of software (e.g., its correctness, re- ability, and efficiency) has become important not only in the context of critical systems (e.g., nuclear power plants) but also for our entire society, from business to leisure. Software engineering is the practical application of scientific knowledge for the economical production and use of high-quality software [Pomberger96]. The discipline aims at developing methods, techniques, tools, and standards to fulfill these aims. The number of methods and tools available to the software engineer nowadays is overwhelming; nevertheless, many software projects fail—that is, do not meet their schedules, are over budget, do not meet the user needs, or simply have considerable quality defects. The numerous possible explanations for this situation include poor project management, unsuitable methods and tools used in the project, and poorly developed skills of the participating software engineers.

The TOOLS EE (Technology of Object-Oriented Languages and Systems Eastern Europe) conference series combines the experience with object technology and its applications in industrial environments, with an academically-oriented vision. They offer a meeting place for Eastern European experts and practitioners, and their colleagues from all over the world. Technology of Object-Oriented Languages, Systems and Architectures is a compilation of contributing papers presented at TOOLS Eastern Europe 2000 and 2002, respectively, second and third conference in this series. Both conferences were held in Eastern Europe, more specifically in Sofia, Bulgaria. Technology of Object-Oriented Languages, Systems and Architectures is designed to meet the needs of a professional audience composed of in computer science and engineering.

Cyber-physical systems (CPSs) consist of software-controlled computing devices communicating with each other and interacting with the physical world through sensors and actuators. Because most of the functionality of a CPS is implemented in software, the software is of crucial importance for the safety and security of the CPS. This book presents principle-based engineering for the development and operation of dependable software. The knowledge in this book addresses organizations that want to strengthen their methodologies to build safe and secure software for mission-critical cyber-physical systems. The book: • Presents a successful strategy for the management of vulnerabilities, threats, and failures in mission-critical cyber-physical systems; • Offers deep practical insight into principle-based software development (62 principles are introduced and cataloged into five categories: Business & organization, general principles, safety, security, and risk management principles); • Provides direct guidance on architecting and operating dependable cyber-physical systems for software managers and architects.

This book presents a process for problem resolution, policy crafting, and decision making based on the use of modeling and simulation. Detailed descriptions of the methods by which Visual SLAM and AweSim, version 3, support this process are presented. The text is organized into four parts: Introduction to Simulation, Visual SLAM Network Modeling and AweSim, Simulation Analysis, and Visual SLAM Discrete, Continuous and Combined Modeling.

Falco Jaekel develops a reference architecture for cloud logistics systems. The reference architecture shows how to apply the principles and concepts of cloud computing (e.g. virtualization, service-orientation) to logistics system design and thus how to deliver certain physical logistics capabilities such as transport and storage with the essential cloud characteristics (e.g. on-demand, rapid elasticity, pay-per-use). Within certain scenarios, this innovative mode of delivery can reconcile logistics efficiency with effectiveness and thus may enable firms to achieve competitive advantage in dynamic environments.

This volume includes the papers accepted for the First International Conference on Electronic Commerce and Web Technologies, which was held in Greenwich, UK, on September 4-6, 2000. The conference is the first of a series of planned conferences on these topics with the goal to bring together researchers from academia, practitioners and commercial developers from industry, and users to assess current methodologies and explore new ideas in e-commerce and web technology. The conference attracted 120 papers from all over the world and each paper was reviewed by at least three program committee members for its merit. The program committee finally selected 42 papers for presentation and inclusion in these conference proceedings. The conference program consisted of 14 technical sessions and two invited talks spread over three days. The regular sessions covered topics such as web application design, intellectual property rights, security and fairness, distributed organizations, web usage analysis, modelling of web applications, electronic commerce success factors, electronic markets, XML, web mining, electronic negotiation, integrity and performance, facilitating electronic commerce, and mobile electronic commerce. There were two invited addresses at the conference. The first was by Anthony Finkelstein, University College London, UK on "A Foolish Consistency: Technical Challenges in Consistency Management". This was a common address to the DEXA, the DaWaK and the EC-Web attendees. The second talk was by Paul Timmers, European Commission, Information Technologies Directorate on "The Role of Technology for the e-Economy".