Bøger af Alexander Romanovsky

As software systems become ubiquitous, the issues of dependability become more and more crucial. Given that solutions to these issues must be considered from the very beginning of the design process, it is reasonable that dependability is addressed at the architectural level. This book was born of an effort to bring together the research communities of software architectures and dependability.This state-of-the-art survey contains 18 expanded and peer-reviewed papers based on the carefully selected contributions to the Workshop on Architecting Dependable Systems (WADS 2006), organized at the 2006 International Conference on Dependable Systems and Networks (DSN 2006), held in Philadelphia, PA, USA, in June 2006. It also contains a number of invited papers written by recognized experts in the area. The papers are organized in topical sections on architectural description languages, architectural components and patterns, architecting distributed systems, and architectural assurances for dependability.

Many software systems have reached a level of complication, mainly because of their size, heterogeneity and distribution, which results in faults appearing that cannot be traced back easily to the code. Some of these "e;faults"e; could also be unexpected program behavior that appears as a result of interactions between different parts of the program; this is commonly known as complexity. New methods, approaches, tools and techniques are needed to cope with the increasing complexity in software systems; amongst them, fault-tolerance techniques and formal methods, supported by the corresponding tools, are promising solutions. This book brings together papers focusing on the application of rigorous design techniques to the development of fault-tolerant, software-based systems.This volume is an outcome of the REFT 2005 Workshop on Rigorous Engineering of Fault-Tolerant Systems held in conjunction with the Formal Methods 2005 conference at Newcastle upon Tyne, UK, in July 2005. The authors of the best workshop papers were asked to enhance and expand their work and a number of well-established researchers working in the area contributed invited chapters. From the 19 refereed and revised papers presented, 12 are versions reworked from the workshop; 9 of them are totally new. The book is rounded off by two provocatively different position on the role of programming languages.

Modern software systems are becoming more complex in many ways and are having to cope with a growing number of abnormal situations which, in turn, are increasingly complex to handle. Exception handling is an essential part of software and system architectures and a crucial element in the tool-set that enables the building of resilient, robust and safe software systems. Two ECOOP workshops on exception handling were held in 2003 and 2005. This book is primarily an outcome of these two events - several workshop participants as well as a number of other leading researchers in the field were invited to contribute a chapter each.This book is composed of five parts; the first four deal with topics related to exception handling in the context of programming languages, concurrency and operating systems, pervasive computing systems, and requirements and specifications. The last part focuses on case studies, experimentation and qualitative comparisons. The 16 coherently written chapters by leading researchers competently address a wide range of issues in exception handling.

As software systems become ubiquitous, the issues of dependability become more and more crucial. Given that solutions to these issues must be considered from the very beginning of the design process, it is reasonable that dependability is addressed at the architectural level. This book comes as a result of an effort to bring together the research communities of software architectures and dependability.This state-of-the-art survey contains 16 carefully selected papers originating from the Twin Workshops on Architecting Dependable Systems (WADS 2004) accomplished as part of the International Conference on Software Engineering (ICSE 2004) in Edinburgh, UK and of the International Conference on Dependable Systems and Networks (DSN 2004) in Florence, Italy. The papers are organised in topical sections on architectures for dependable services, monitoring and reconfiguration in software architectures, dependability support for software architectures, architectural evaluation, and architectural abstractions for dependability.

FIDJI 2004 was an international forum for researchers and practitioners int- estedinthe advancesin,andapplicationsof,softwareengineeringfordistributed application development. Concerning the technologies, the workshop focused on "e;Java-related"e; technologies. It was an opportunity to present and observe the latest research, results, and ideas in these areas. Allpaperssubmittedtothisworkshopwerereviewedbyatleasttwomembers of the International Program Committee. Acceptance was based primarily on originality and contribution. We selected, for these post-workshop proceedings, 11 papers amongst 22 submitted, a tutorial and two keynotes. FIDJI2004aimedatpromotingascienti?capproachtosoftwareengineering. The scope of the workshop included the following topics: - design of distributed applications - development methodologies for software and system engineering - UML-based development methodologies - development of reliable and secure distributed systems - component-based development methodologies - dependability support during system life cycle - fault tolerance re?nement, evolution and decomposition - atomicity and exception handling in system development - software architectures, frameworks and design patterns for developing d- tributed systems - integration of formal techniques in the development process - formal analysis and grounding of modelling notation and techniques (e. g. , UML, metamodelling) - supporting the security and dependability requirements of distributed app- cations in the development process - distributed software inspection - refactoring methods - industrial and academic case studies - development and analysis tools The organization of such a workshop represents an important amount of work.

As software systems become ubiquitous, the issues of dependability become more and more critical. Given that solutions to these issues must be taken into account from the very beginning of the design process, it is appropriate that dependability is addressed at the architectural level. This book results from an effort to bring together the research communities of software architectures and dependability. Inspired by the ICSE 2003 Workshop on Software Architectures for Dependable Systems, the book focuses on topics relevant to improving the state of the art in architecting dependable systems. The 15 thoroughly reviewed papers originate partly from the workshop; others were solicited in order to achieve complete coverage of all relevant aspects. The papers are organized into topical sections on architectures for dependability, fault-tolerance in software architectures, dependability analysis in software architectures, and industrial experience.

Modern software systems are becoming more complex in many ways and have to cope with a growing number of abnormal situations which, in turn, are increasingly complex to handle. The most general way of dealing with these problems is by incorporating exception handling techniques in software design. In the past, various exception handling models and techniques have been proposed and many of them are part of practical languages and software composition technologies.This book is composed of five parts, which deal with topics related to exception handling in the context of programming language models, design methodologies, concurrent and distributed systems, applications and experiences, and large-scale systems such as database and workflow process mangagement systems. The 17 coherently written chapters by leading researchers competently address a wide range of issues in exception handling.