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A cutting-edge survey of formal methods directed specifically at dealing with the deep mathematical problems engendered by the study of developing systems, in particular dealing with developing phase spaces, changing components, structures and functionalities, and the problem of emergence. Several papers deal with the modelling of particular experimental situations in population biology, economics and plant and muscle developments in addition to purely theoretical approaches. Novel approaches include differential inclusions and viability theory, growth tensors, archetypal dynamics, ensembles with variable structures, and complex system models. The papers represent the work of theoreticians and experimental biologists, psychologists and economists. The areas covered embrace complex systems, the development of artificial life, mathematics, computer science, biology and psychology.
th The 20 anniversary of the IFIP WG6. 1 Joint International Conference on Fonna! Methods for Distributed Systems and Communication Protocols (FORTE XIII / PSTV XX) was celebrated by the year 2000 edition of the Conference, which was held for the first time in Italy, at Pisa, October 10-13, 2000. In devising the subtitle for this special edition --'Fonna! Methods Implementation Under Test' --we wanted to convey two main concepts that, in our opinion, are reflected in the contents of this book. First, the early, pioneering phases in the development of Formal Methods (FM's), with their conflicts between evangelistic and agnostic attitudes, with their over optimistic applications to toy examples and over-skeptical views about scalability to industrial cases, with their misconceptions and myths . . . , all this is essentially over. Many FM's have successfully reached their maturity, having been 'implemented' into concrete development practice: a number of papers in this book report about successful experiences in specifYing and verifYing real distributed systems and protocols. Second, one of the several myths about FM's - the fact that their adoption would eventually eliminate the need for testing - is still quite far from becoming a reality, and, again, this book indicates that testing theory and applications are still remarkably healthy. A total of 63 papers have been submitted to FORTEIPSTV 2000, out of which the Programme Committee has selected 22 for presentation at the Conference and inclusion in the Proceedings.
In software engineering there is a growing need for formalization as a basis for developing powerful computer assisted methods. This volume contains seven extensive lectures prepared for a series of IFIP seminars on the Formal Description of Programming Concepts. The authors are experts in their fields and have contributed substantially to the state of the art in numerous publications. The lectures cover a wide range in the theoretical foundations of programming and give an up-to-date account of the semantic models and the related tools which have been developed in order to allow a rigorous discussion of the problems met in the construction of correct programs. In particular, methods for the specification and transformation of programs are considered in detail. One lecture is devoted to the formalization of concurrency and distributed systems and reflects their great importance in programming. Further topics are the verification of programs and the use of sophisticated type systems in programming. This compendium on the theoretical foundations of programming is also suitable as a textbook for special seminars on different aspects of this broad subject.
This book is the combined proceedings of the latest IFIP Formal Description Techniques (FDTs) and Protocol Specification, Testing and Verification (PSTV) series. It addresses FDTs applicable to communication protocols and distributed systems, with special emphasis on standardised FDTs. It features state-of-the-art in theory, application, tools and industrialisation of formal description.
This book is based upon work done under the project "Correct Software through Formal Methods" supported by the German Ministry of Research and Technology. As a case-study report on the practice of formal software development, this book systematically presents and compares 18 different approaches to the control of a real-world production cell. Mathematically precise, formal methods play an increasingly important role in software development, particularly in areas where failure of software would result in injury to people or, at best, significant loss of money. By analyzing the benefits and explaining the use and limitations of formal methods on a sample basis, this book provides a roadmap for the selection and application of appropriate approaches and thus helps in putting formal methods into industrial use.
This book presents the latest research in formal techniques for distributed systems, including material on theory, applications, tools and industrial usage of formal techniques.
Formal Description Techniques and Protocol Specification, Testing and Verification addresses formal description techniques (FDTs) applicable to distributed systems and communication protocols. It aims to present the state of the art in theory, application, tools and industrialization of FDTs. Among the important features presented are: FDT-based system and protocol engineering; FDT-application to distributed systems; Protocol engineering; Practical experience and case studies. Formal Description Techniques and Protocol Specification, Testing and Verification comprises the proceedings of the Joint International Conference on Formal Description Techniques for Distributed Systems and Communication Protocols and Protocol Specification, Testing and Verification, sponsored by the International Federation for Information Processing, held in November 1998, Paris, France. Formal Description Techniques and Protocol Specification, Testing and Verification is suitable as a secondary text for a graduate-level course on Distributed Systems or Communications, and as a reference for researchers and practitioners in industry.
In this deeply probing, intellectually challenging work, Dr. JaanValsiner lays the groundwork for a dynamic new cultural-historicalapproach to developmental psychology. He begins by deconstructingtraditional developmental theory, exposing the conceptual confusionand epistemological blind spots that he believes continue toundermine the scientific validity of its methodologies. Hedescribes the ways in which embedded cultural biases shapeinterventional goals and influence both the direction researchtakes and the ways in which research data are interpreted. And hesuggests ways in which researchers and clinicians can become moreaware of and transcend those biases. Dr. Valsiner then develops a hierarchical, systemic model thatportrays development as an open-ended, dialectical process. Centralto Valsiner's approach is the premise that, since each child isunique--as are his or her life conditions--deviations in functionor the rate of development from a prescribed norm are just aslikely to be constructive adaptations to changing environmentalpressures as symptoms of psychological disorder. Drawing uponsources as varied as linguistic philosophy, structuralanthropology, thermodynamics, and systems theory, as well as thework of many of the leading figures in twentieth-centurydevelopmental theory, Valsiner argues convincingly for an approachto developmental psychology mature enough to recognize thedifference between healthy variability and dysfunction. In later chapters the focus shifts from development in the abstractto the everyday challenges encountered by the developing child.Case histories illustrate the subtle interplay of cultural,physiological, and psychological factors in shaping childhoodbehavior. Called an "intellectual tour de force" by the Bulletin of theMenninger Clinic, Culture and the Development of Children's Actionis important reading for developmental psychologists, childpsychologists, and all child clinicians. "Of course, no science progresses in a linear fashion. It movesinterdependently with the society in which it is embedded, makinguse of the narrative forms in describing itself to its insiders andoutsiders. The rhetoric of scientists about their science istherefore necessarily inconsistent. Sciences are both socialinstitutions within a society and social organizations that attemptto build universal knowledge. It is a complicated task forpsychology to be both knowledge-constructing and self-reflexive atthe same time. Nevertheless, it is the latter kind of reflexivitythat guides the actual construction of knowledge." -- JaanValsiner "[This book] is a fascinating and important work that challengesmuch of contemporary developmental psychology. The Second Editionhas changed in a number of respects, and much new material has beenadded, but at root, Valsiner grapples with the question 'how shallwe understand development?' He continues to struggle also with whathe describes rather vividly as the 'epistemological windmills ofpsychology.' His challenge is summed up succinctly in two linesfrom a poem by T. S. Eliot: * Where is the wisdom we have lost in knowledge? * Where is the knowledge we have lost in information?" -- -- fromthe Foreword by Kevin Connolly
The SEDOS (Software Environment for the Design of Open Distributed Systems) project was supported by the Commission of the European Communities under the ESPRIT Programme. It was divided into two main tasks, related respectively to the two ISO formal description techniques Estelle and LOTOS, which became international standards in September 1988. This book presents the work related to LOTOS. It includes a tutorial on LOTOS, a number of specifications, in particular a specification of the OSI session layer. Results in verification theory and descriptions of supporting software tools are given.