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Specification and Verification of Concurrent Systems
AvCharles Rattray
Häftad, Engelska, 1990
566 kr
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This volume contains papers presented at the BCS-FACS Workshop on Specification and Verification of Concurrent Systems held on 6-8 July 1988, at the University of Stirling, Scotland. Specification and verification techniques are playing an increasingly important role in the design and production of practical concurrent systems. The wider application of these techniques serves to identify difficult problems that require new approaches to their solution and further developments in specification and verification. The Workshop aimed to capture this interplay by providing a forum for the exchange of the experience of academic and industrial experts in the field. Presentations included: surveys, original research, practical experi ence with methods, tools and environments in the following or related areas: Object-oriented, process, data and logic based models and specifi cation methods for concurrent systems Verification of concurrent systems Tools and environments for the analysis of concurrent systems Applications of specification languages to practical concurrent system design and development. We should like to thank the invited speakers and all the authors of the papers whose work contributed to making the Workshop such a success. We were particularly pleased with the international response to our call for papers. Invited Speakers Pierre America Philips Research Laboratories University of Warwick Professor M. Joseph David Freestone British Telecom Organising Committee Charles Rattray Dr Muffy Thomas Dr Simon Jones Dr John Cooke Professor Ken Turner Derek Coleman Maurice Naftalin Dr Peter Scharbach vi Preface We would like to aeknowledge the finaneial eontribution made by SD-Sysems Designers pie, Camberley, Surrey.
AI and Cognitive Science ’89
Dublin City University 14–15 September 1989
AvAlan Smeaton,Gabriel McDermott
Häftad, Engelska, 1990
566 kr
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This volume contains the texts of papers presented at the Second Irish Conference on Artificial Intelligence and Cognitive Science, held at Dublin City University in September 1989. This Conference has now become the major annual forum in Ireland for the presentation and discussion of current research work in the multi-disciplinary area of Artificial Intelligence. Papers in this volume have been divided into seven sections which vary in their subject matter. Image processing, human-computer interaction, planning, applications and theory of expert systems, learn ing, speech, and natural language processing and semantics repre sents as broad a spectrum of AI and AI-related topics as can be found in current AI research. This harmonises quite well with the aims and scope of the AICS'89 conference which were to provide a forum for industry and academic research to discuss AI and AI-related topics and we were delighted that such a broad coverage of topics was achieved. Despite the broad nature, however, none of the papers are primarily review articles; each paper presents new research results within its own specific area.
Functional Programming
Proceedings of the 1989 Glasgow Workshop 21–23 August 1989, Fraserburgh, Scotland
AvKei Davis,John Hughes
Häftad, Engelska, 1990
566 kr
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Functional Programming is a relatively new area of computer science. These proceedings contain 25 papers representing an excellent snapshot of the current state of functional programming and are written by the leading computer scientists in this aera. In some universities, a functional programming language is used as the introductory teaching language and computer architectures are being designed and investigated to support functional languages.
Semantics for Concurrency
Proceedings of the International BCS-FACS Workshop, Sponsored by Logic for IT (S.E.R.C.), 23–25 July 1990, University of Leicester, UK
AvMarta Z. Kwiatkowska,Michael W. Shieldsm. fl.
Häftad, Engelska, 1990
566 kr
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The semantics of concurrent systems is one of the most vigorous areas of research in theoretical computer science, but suffers from disagree ment due to different, and often incompatible, attitudes towards abstracting non-sequential behaviour. When confronted with process algebras, which give rise to very elegant, highly abstract and com positional models, traditionally based on the interleaving abstraction, some argue that the wealth of contribution they have made is partially offset by the difficulty in dealing with topics such as faimess. On the other hand, the non-interleaving approaches, based on causality, although easing problems with fairness and confusion, still lack struc ture, compositionality, and the elegance of the interleaving counter parts. Since both these approaches have undoubtedly provided important contributions towards understanding of concurrent systems, one should concentrate on what they have in common, rather than the way they differ. The Intemational Workshop on Semantics for Concurrency held at the University of Leicester on 23-25 July 1990 was organised to help overcome this problem. Its main objective was not to be divisive, but rather to encourage discussions leading towards the identification of the positive objective features of the main approaches, in the hope of furthering common understanding. The Workshop met with an excel lent response, and attracted contributions from all over the world. The result was an interesting and varied programme, which was a combi nation of invited and refereed papers. The invited speakers were: Prof. dr. E. Best (Hildesheim University) Prof. dr. A.
Persistent Object Systems
Proceedings of the Third International Workshop 10–13 January 1989, Newcastle, Australia
AvJohn Rosenberg,David Koch
Häftad, Engelska, 1990
566 kr
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Persistent object systems are systems which support the creation and manipulation of objects in a uniform manner, regardless of how long they persist. This is in direct contrast with conventional systems where temporary objects are created and manipulated using one mechanism (typically programming language data structures) and permanent objects are maintained using a different mechanism (usually a filestore). The unification of temporary and permanent objects yields systems which are smaller and more efficient than conventional systems and which provide a powerful and flexible platform for the development of large, data intensive applications. This volume presents the proceedings of a workshop at which latest research in this area was discussed. The papers are grouped into sections on the following topics: type systems and persistence, persistent programming languages, implementing persistence, object stores, measurement of persistent systems, transactions and persistence, and persistent machines.
Z User Workshop
Proceedings of the Fourth Annual Z User Meeting Oxford, 15 December 1989
AvJohn E. Nicholls
Häftad, Engelska, 1990
566 kr
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The mathematical concepts and notational conventions we know of as Z were first proposed around 1981. Its origins were in line with the objectives of the PRG - to establish a mathematical basis for program ming concepts and to verify the work by case studies with industry. Hence among early Z users some were from academic circles, with interests in the mathematical basis of programming; others came from industry and were involved with pilot projects and case studies linked with the Programming Research Group. Four years ago we had the first Z User Meeting, a fairly modest affair with representatives more or less equally divided between academia and industry. At the first meeting there were, as in this meeting, a variety of technical papers, reports of work in progress and discussions. A number of people from industry came along, either because they had begun to use Z or were curious about the new direction. In the discussion sessions at the end of the meeting, there were calls from attendees for the establishment of a more stable base for the notation, including work on its documentation and standards. Many of these requests have now been satisfied and the notation is now being proposed for standards development.
Formal Methods for Trustworthy Computer Systems (FM89)
Report from FM89: A Workshop on the Assessment of Formal Methods for Trustworthy Computer Systems 23–27 July 1989, Halifax, Canada
AvDan Craigen
Häftad, Engelska, 1990
566 kr
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The 1989 Workshop on the Assessment of Formal Methods for Trustworthy Com puter Systems (FM89} was an invitational workshop that brought together repre sentatives from the research, commercial and governmental spheres of Canada, the United Kingdom, and the United States. The workshop was held in Halifax, Nova Scotia, Canada, from July 23 through July 27, 1989. This document reports the activities, observations, recommendations and conclusions resulting. from FM89. 1. 1 Purpose of Workshop The primary purpose for holding FM89 was to assess the role of formal methods in the development and fielding of trustworthy critical systems. The need for this assessment was predicated upon four observations: 1. Critical systems are increasingly being controlled by computer systems; 2. Existing techniques for developing, assuring and certifying computer-based critical systems are inadequate; 3. Formal methods have the potential for playing the same role in the devel opment of computer-based systems as applied mathematics does for other engineering disciplines; and 4. Formal methods have had limited impact on the development of comput- based systems and supporting technologies. · The goal of the workshop was to complete the following tasks: 1. Assess the problems retarding the development of trustworthy critical systems; 2. Determine the (potential) impact of applying formal methods techniques to the development of trustworthy critical systems; 3. Determine the research and development required to facilitate a broader ap plication of formal methods techniques; 4.
Security and Persistence
Proceedings of the International Workshop on Computer Architectures to Support Security and Persistence of Information 8–11 May 1990, Bremen, West Germany
AvJohn Rosenberg,J.Leslie Keedy
Häftad, Engelska, 1990
566 kr
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During a short visit to Bremen in December 1989 John Rosenberg had several discussions with me about computer architecture. Although we had previously worked together for more than a decade in Australia we had not seen each other for over a year, following my move to Bremen in 1988. Meanwhile John was spending a year on study leave at the University of St. Andrews in Scotland with Professor Ron Morrison and his persistent programming research group. From our conversations it was quite clear that John was having a most fruitful time in St. Andrews and was gaining valuable new insights into the world of persistent programming. He was very keen to explore the significance of these insights for the MONADS Project, which we had been jOintly directing since the early 1980s. MONADS was not about persistent programming. In fact it had quite different origins, in the areas of software engineering and information protection. In an earlier stage of the project our ideas on these themes had led us into the world of computer architecture and even hardware deSign, in our attempts to provide an efficient base machine for our software ideas. The most important practical result of this phase of the project had been the development of the MONADS-PC, a mini computer which would be better compared with say a V tv< 11/750 than with a personal computer, despite its unfortunate name.
Women into Computing
Selected Papers 1988–1990
AvGillian Lovegrove,Barbara Segal
Häftad, Engelska, 1991
534 kr
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This publication contains a selection of papers from the Women into Computing (WiC) Conferences which have been held over the last three years. Major national conferences were held in 1988 and 1990 and a smaller conference on the subject of organizing workshops for schoolgirls was held in 1989. The papers cover a variety of issues ranging from the discussion of attitudes of girls to technology at school, the management of classes and limited resources, making links between schools and industry and organizing workshops for schoolgirls, through to the discussion of courses for women returners and examples of models of co-operation between industry and schools. Women into Computing is an active working group, which was formed in 1987 to encourage more women into the field of computing. It focuses on promoting interest at school, further, higher and continuing education levels with the longer term aim of increasing the numbers of women with fulfilling careers in technology-related areas.The skills shortage is already a serious one and demographic changes mean that industry will, over the next decade, need to pay increasing attention to short term and long term measures to overcome the crisis, one of which will be the increasing employment of women in increasingly technological work.
Software Re-use, Utrecht 1989
Proceedings of the Software Re-use Workshop, 23–24 November 1989, Utrecht, The Netherlands
AvLiesbeth M. Dusink,Patrick A.V. Hall
Häftad, Engelska, 1991
566 kr
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In November 1989 we organised a workshop on software re-use, inviting members of the leading research teams across Europe. In retrospect, we realise that we missed a few research teams out, but nevertheless we did have a very fruitful workshop. This book is the outcome of that meeting. Prior to the workshop, teams submitted short position papers, and at the workshop made very short presentations of these. Most of the time was spent in four parallel sessions, and the reports of these sessions are given in Chapter 2. After the workshop we invited the attendees to revise and resubmit their papers in the light of the workshop, and it is these updated papers that appear in Chapter 4 onwards. The papers are in alphabetical order of first author. To complete this text we have added an introduction to software re-use as a first chapter-this was prepared by Liesbeth Dusink. We have added a comprehensive bibliography as Chapter 3, merging the bibliographies accumulated at Delft and at Brunei. To be able to organise the workshop we were sponsored by SERC, the Software Engineering Research Centre in Utrecht, Netherlands. November 1990 Liesbeth Dusink Pat Hall Contents Ust of Contributors . . . .. . .. . .. .. . . .. . . .. . . .. . .. . .. .. .. . . .. .. .. . . . .. . . . . . . . . . . . . . . xi . . . .
AI and Cognitive Science ’90
University of Ulster at Jordanstown 20–21 September 1990
AvMichael F. McTear,Norman Creaney
Häftad, Engelska, 1991
566 kr
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This book contains the edited versions of papers presented at the 3rd Irish Conference on Artificial Intelligence and Cognitive Science, which was held at the University of Ulster at Jordanstown, Northern Ireland on 20-21 September 1990. The main aims of this annual conference are to promote AI research in Ireland, to provide a forum for the exchange of ideas amongst the different disciplines concerned with the study of cognition, and to provide an opportunity for industry to see what research is being carried out in Ireland and how they might benefit from the results of this research. Although most of the partiCipants at the conference came from universities and companies within Ireland, a positive feature of the conference was the extent of interest shown outside of Ireland, resulting in partiCipants from USA, Canada, Austria, and England. The keynote speakers were Professor David Chin, University of Hawaii, and Professor Derek Partridge, University of Exeter, and the topics included machine learning, AI tools and methods, expert systems, speech, vision, natural language, reasoning with uncertain information, and explanation. The sponsors of the conference were Digital Equipment Co (Galway) and the Industrial Development Board for Northern Ireland.
4th Refinement Workshop
Proceedings of the 4th Refinement Workshop, organised by BCS-FACS, 9–11 January 1991, Cambridge
AvJoseph M. Morris,Roger C. Shaw
Häftad, Engelska, 1991
566 kr
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This volume contains the papers presented at the 4th Refinement Workshop, organized by the Formal Aspects group of the British Computer Society, and held in Cambridge on January 9-11, 1991. "Refinement" is the term used to describe the systematic and formal methodology of specifying hardware and software and transforming the specifications into designs and implementations. The value of formal methods in producing reliable hardware and software is now widely appreciated among both academics and many workers in industry, although such methods - and in particular their application to industrial-scale problems - are still in their infancy. This workshop brought together European workers in the field to present tutorials on the state of the art in both theory and industrial applications. The papers cover the development of both sequential and concurrent systems and the theoretical ideas and support tools for their effective use. This volume will be of interest to researchers in formal methods and software engineers wanting to keep track of developments in the application of formal methods in industry.
Designing Correct Circuits
Workshop jointly organised by the Universities of Oxford and Glasgow, 26–28 September 1990, Oxford
AvGeraint Jones,Mary Sheeran
Häftad, Engelska, 1991
566 kr
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These proceedings contain the papers presented at a workshop on Designing Correct Circuits, jointly organised by the Universities of Oxford and Glasgow, and held in Oxford on 26-28 September 1990. There is a growing interest in the application to hardware design of the techniques of software engineering. As the complexity of hardware systems grows, and as the cost both in money and time of making design errors becomes more apparent, so there is an eagerness to build on the success of mathematical techniques in program develop ment. The harsher constraints on hardware designers mean both that there is a greater need for good abstractions and rigorous assurances of the trustworthyness of designs, and also that there is greater reason to expect that these benefits can be realised. The papers presented at this workshop consider the application of mathematics to hardware design at several different levels of abstraction. At the lowest level of this spectrum, Zhou and Hoare show how to describe and reason about synchronous switching circuits using UNilY, a formalism that was developed for reasoning about parallel programs. Aagaard and Leeser use standard mathematical tech niques to prove correct their implementation of an algorithm for Boolean simplification. The circuits generated by their formal synthesis system are thus correct by construction. Thuau and Pilaud show how the declarative language LUSTRE, which was designed for program ming real-time systems, can be used to specify synchronous circuits.
IV Higher Order Workshop, Banff 1990
Proceedings of the IV Higher Order Workshop, Banff, Alberta, Canada 10–14 September 1990
AvGraham Birtwistle
Häftad, Engelska, 1991
566 kr
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It is many years since Landin, Burge and others showed us how to apply higher order techniques and thus laid some foundations for modern functional programming. The advantage of higher order descriptions - that they can be very succinct and clear - has been percolating through ever since. Current research topics range from the design, implementation and use of higher order proof assistants and theorem provers, through program specification and verification, and programming language design, to its applications in hardware description and verification. The papers in this book represent the presentations made at a workshop held at Banff, Canada, September 10-14 1990 and organised by the Computer Science Department of the University of Calgary. The workshop gathered together researchers interested in applying higher order techniques to a range of problems. The workshop format had a few (but fairly long) presentations per day. This left ample time for healthy discussion and argument, many of which continued on into the small hours. With so much to choose from, the program had to be selective. This year's workshop was divided into five parts: 1. Expressing and reasoning about concurrency: Warren Burton and Ken Jackson, John Hughes, and Faron Moller. 2. Reasoning about synchronous circuits: Geraint Jones and Mary Sheeran (with a bonus on the fast Fourier transform from Geraint). 3. Reasoning about asynchronous circuits: Albert Camilleri, Jo Ebergen, and Martin Rem. 4. Categorical concepts for programming languages: Robin Cockett, Barry Jay, and Andy Pitts.
Functional Programming, Glasgow 1990
Proceedings of the 1990 Glasgow Workshop on Functional Programming 13–15 August 1990, Ullapool, Scotland
AvSimon L. Peyton Jones,Graham Huttonm. fl.
Häftad, Engelska, 1991
566 kr
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The Third Glasgow Workshop on Functional Programming was held in Ullapool, Scotland, 13-15th August 1990. Members of the functional programming groups at Glasgow and Stirling University attended the workshop together with a small number of invited participants from other universities and industry. The workshop was organised by Kei Davis, Jak Deschner, Kevin Hammond, Carsten Kehler Holst, John Hughes, Graham Hutton, and John Launchbury, all from Glasgow University. We are very grateful for the support of our industrial sponsors: British Telecom, Hewlett Packard, ICL and Software AG. Their financial help made the workshop possible. Thanks to Samson Abramsky, Tony Field, and Paul Kelly, all from Imperial College, for their help in refereeing many of the papers. Glasgow University The Programme Committee: December 1990 Simon Peyton Jones (chairman) Chris Hankin Carsten Kehler Holst John Hughes Graham Hutton Philip Wadler Contents Lifetime Analysis Guy Argo ...Compiling Laziness by Partial Evaluation Anders Bondorf ...9 Strictness Analysis in 4D Kei Davis and Philip Wadler ...23 An Algorithmic and Semantic Approach to Debugging Cordelia Hall, Kevin Hammond and John O'Donnell ...44 Abstract Interpretation of Term Graph Rewriting Systems Chris Hankin ...54 Compile-Time Garbage Collection by Necessity Analysis Geoff W Hamilton and Simon B. Jones...66 Improving Full Laziness Carsten Kehler Holst ...71 Towards Binding-Time Improvement for Free Carsen Kehler Holst and John Hughes ...83 Towards Relating Forwards and Backwards Analyses John Hughes and John Launchbury ...101 PERs Generalise Projections for Strictness Analysis Sebastian Hunt ...114 Functional Programming with Relations Graham Hutton ...
Z User Workshop, Oxford 1990
Proceedings of the Fifth Annual Z User Meeting, Oxford, 17–18 December 1990
AvJ.E. Nicholls
Häftad, Engelska, 1991
566 kr
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The approach described in [JonSl, JonS3a, JonS3b] set out to extend operation decom- position methods for sequential programs - such as are used in VDM [Jon90] - to cover concurrent shared-variable systems. The essential step in [JonSl] was to recognise that 1 inter/erence had to be specified. This is necessary in order to achieve a notion of compo- sitionality - contrast [Owi75]. Rather than the many erudite definitions of composition- ality (e. g. [ZwiSS]), the view taken here is that, when a development task is decomposed into sub-tasks, these must be simpler than the original 'task. This is easy to achieve for sequential programs: decomposing a specified operation S into (Sl; S2), the specifica- tions of the Sj should neither include unnecessary information from each other nor from the context (i. e. S). An interesting discussion of the 'Quest for Compositionality' (in the context of concurrency) is contained in [dRS5, dRS6]. The rely/guarantee idea provided an existence proof that specifications and developments could be made powerful enough to cope with some forms of interference.The work initially attracted little attention but 2 3 there have recently been some critiques and attempts to extend the work * Most notably, Ketil St~len's thesis [St~90] addresses the main shortcomings of [JonSl]: the fact that no attempt had been made to handle synchronization has been remedied by adding a wait condition and other limitations of expressiveness have been shown to succumb to the judicious use of auxiliary variables.
Specifications of Database Systems
International Workshop on Specifications of Database Systems, Glasgow, 3–5 July 1991
AvDavid J. Harper,Moira C. Norrie
Häftad, Engelska, 1992
566 kr
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Increasingly, formal specification is being used by database researchers to describe and understand the systems they are designing and implementing. Similarly, those working on formal specification techniques have recognized that the database field provides a rich context for developing their ideas. However, as experts in one field often have a relatively limited knowledge of the other, there is a growing need for discussion about the relationship between these two fields and how they can be usefully combined. This volume contains the 16 papers which were presented at the International Workshop on Specification on Database Systems, held in Glasgow, 3-5 July 1991. The purpose of the workshop was to bring together these fields and to examine, through a series of invited talks, presentations and working groups, the role that formal specification can play in developing database systems. The papers describe current research into topics such as the formal specification of data models, query languages and transaction handling and the use of formal specification techniques to understand problems which arise in database systems.The working groups, which are summarized at the end of the volume, covered a variety of issues including the role of graphical notations in database specification, the use of specification techniques in enabling "open" or extensible database systems and the education of the database community in specification techniques.
7th UK Computer and Telecommunications Performance Engineering Workshop
Edinburgh, 22–23 July 1991
AvJane E. Hillston,Peter J.B. Kingm. fl.
Häftad, Engelska, 1992
549 kr
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Performance engineering is a fast-moving field where advances in technology mean that new issues constantly need to be addressed. In response to this, the UK Computer and Telecommunications Performance Engineering workshops were set up in 1985 to provide a valuable opportunity for the discussion and exchange of ideas. They have subsequently become well established as the focus for academic and industrial practitioners from the UK and Europe with an interest in performance and modelling and analysis. This volume contains the 16 papers which were presented at the 7th annual workshop, held in Edinburgh in July 1991. The workshop highlighted various aspects of parallel computing - an area which is attracting an increasing amount of interest - and the work presented in these papers is of particular interest as the contributors used real analysis to evaluate their models. The papers cover an unusually wide range of topics, both practical and theoretical, including advances in queueing theory, common performance problems and their solutions, assessments of available tools and presentations of new theoretical results. The result is an extremely comprehensive coverage of this important and challenging field. This volume provides an up-to-date assessment of work being carried out by performance engineers in the UK and Europe and will be an invaluable reference book for researchers and practitioners wishing to familiarise themselves with the benefits of performance and analysis.
ALPUK91
Proceedings of the 3rd UK Annual Conference on Logic Programming, Edinburgh, 10–12 April 1991
AvGeraint A. Wiggins,Chris Mellishm. fl.
Häftad, Engelska, 1992
566 kr
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Since its conception nearly 20 years ago, Logic Programming - the idea of using logic as a programming language - has been developed to the point where it now plays an important role in areas such as database theory, artificial intelligence and software engineering. However, there are still many challenging research issues to be addressed and the UK branch of the Association for Logic Programming was set up to provide a forum where the flourishing research community could discuss important issues of Logic Programming which were often by-passed at the large international conferences. This volume contains the twelve papers which were presented at the ALPUK's 3rd conference which was held in Edinburgh, 10-12 April 1991. The aim of the conference was to give a broad but detailed technical insight into the work currently being done in this field, both in the UK and by researchers as far afield as Canada and Bulgaria. The breadth of interest in this area of Computer Science is reflected in the range of the papers which cover - amongst other areas - massively parallel implementation, constraint logic programming, circuit modelling, algebraic proof of program properties, deductive databases, specialised editors and standardisation. The resulting volume gives a good overview of the current progress being made in the field and will be of interest to researchers and students of any aspects of logic programming, parallel computing or database techniques and management.
Declarative Programming, Sasbachwalden 1991
PHOENIX Seminar and Workshop on Declarative Programming, Sasbachwalden, Black Forest, Germany, 18–22 November 1991
AvJohn Darlington,Roland Dietrich
Häftad, Engelska, 1992
566 kr
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Declarative programming languages are based on sound mathematical foundations which means that they offer many advantages for software development. These advantages include their powerful descriptive capabilities, the availability of program analysis techniques and the potential for parallel execution. This volume contains the proceedings of a seminar and workshop organised by the Esprit Basic Research Action Phoenix in collaboration with the Esprit Basic Research Action Integration. Both these groups have been closely involved in investigating the foundations of declarative programming and the integration of various language paradigms, as well as the developing aspects of related technology. The main aim of the seminar and workshop was to provide a forum for the results of this work, together with contributions from other researchers in the same field. These papers cover a variety of important technical areas such as foundations and languages, program transformation and analysis, integrated approaches, implementation techniques, abstract machines and programming methodology. The resulting volume provides an in-depth picture of current research into declarative programming. It will be of special interest to researchers in programming languages and methodology, students of artificial intelligence and anyone involved in industrial research and development.
Building Interactive Systems
Architectures and Tools
AvPhilip Gray,Roger Took
Häftad, Engelska, 1992
566 kr
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Architectures and tools are two important considerations in the construction of interactive computer systems. The former is concerned with the optimal structural organisation of systems and the latter with the effective support of the design and management of user interfaces. They are regarded as the areas of research most likely to contribute to the development of existing interactive systems, in particular by providing improved architectures capable of supporting new styles of interaction and more sophisticated software tools to improve productivity. This volume combines the proceedings of two workshops held in York and Glasgow which concentrated on architectures and tools respectively. In doing so it addresses the problems of user interface construction from two complementary viewpoints and provides alternative perspectives on many of the central issues. Some of the papers are published in expanded form to provide a more comprehensive coverage of the topics and two additional papers have been included which offer a useful insight into issues raised by the workshops. The papers address formal and theoretical concerns as well as academic and commercial ones. Specific topics covered include novel-input models, architectures for real-time systems and object-oriented user interface tools for X-widgets, NeWS- and Smalltalk-based applications. The papers also include presentations of new tools and architectural designs. Building Interactive Systems: Architectures and Tools provides the most extensive recent account of research into the relationship between architectures and tools in the construction of interactive computer systems and will be of interest to researchers, postgraduate students and software developers.
Logic Program Synthesis and Transformation
Proceedings of LOPSTR 91, International Workshop on Logic Program Synthesis and Transformation, University of Manchester, 4–5 July 1991
AvTimothy P. Clement,Kung-Kiu Lau
Häftad, Engelska, 1992
566 kr
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Logic programming synthesis and transformation are methods are deriving logic programs from their specifications and, where necessary, producing alternative but equivalent forms of a given program. The techniques involved in synthesis and transformation are extremely important as they allow the systematic construction of correct and efficient programs and have the potential to enhance current methods of software production. Transformation strategies are also being widely used in the field of logic program development. LOPSTR 91 was the first workshop to deal exclusively with both logic program synthesis and transformation and, as such, filled an obvious gap in the existing range of logic programming workshops. In attempting to cover the subject as comprehensively as possible, the workshop brought together researchers with an interest in all aspects of logic (including Horn Clause and first order logic) and all approaches to program synthesis and transformation. "Logic Program Synthesis and Transformation" provides a complete record of the workshop, with all the papers re-produced either in full or as extended abstracts.They cover a wide range of aspects, both practical and theoretical, including the use of mode input-output in program transformation, program specification and synthesis in constructive formal systems and a case study in formal program development in modular Prolog. This volume provides a comprehensive overview of current research and will be invaluable to researchers and postgraduate students who wish to enhance their understanding of logic programming techniques.
5th Refinement Workshop
Proceedings of the 5th Refinement Workshop, organised by BCS-FACS, London, 8–10 January 1992
AvCliff B. Jones,Roger C. Shawm. fl.
Häftad, Engelska, 1992
566 kr
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Refinement is the term used to describe systematic and formal methods of specifying hardware and software and transforming the specifications into designs and implementations. The value of formal methods in producing reliable hard-and software is widely appreciated by academics and workers in industry, despite the fact that certain research areas, such as the application to industrial-scale problems, are still in their infancy. This volume contains the papers presented at the 5th Refinement Workshop held in London in January 1992. Its theme was the theory and practice of software specifications, which is the transformation of formal software specifications into more correct specifications, designs and codes. This has been an important area of research for the last 5 years and the workshop addressed specific issues and problems related to it.Among the topics discussed in this volume are: the role of refinement in software development, parallel designs and implementations, methods and tools for verifications of critical properties, refinement and confidentiality, concurrent processes as objects, the compliance of Ada programmes with Z specifications and a tactic-driven refinement tool.
Code Generation — Concepts, Tools, Techniques
Proceedings of the International Workshop on Code Generation, Dagstuhl, Germany, 20–24 May 1991
AvRobert Giegerich,S.L. Graham
Häftad, Engelska, 1992
566 kr
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Code Generation - Concepts, Tools, Techniques is based upon the proceedings of the Dagstuhl workshop on code generation which took place from 20-24 May 1991. The aim of the workshop was to evaluate current methods of code generation and to indicate the main directions which future research is likely to take. It provided an excellent forum for the exchange of ideas and had the added advantage of bringing together European and American experts who were unlikely to meet at less specialised gatherings. This volume contains 14 of the 30 papers presented at the Dagstuhl workshop. The papers deal mainly with the following four topics: tools and techniques for code generation, code generation for parallel architectures, register allocation and phase ordering problems, and formal methods and validations. Most of the papers assess the progress of on-going research work, much of which is published here for the first time, while others provide a review of recently completed projects. The volume also contains summaries of two discussion groups which looked at code generation tools and parallel architectures. As a direct result of one of these discussions, a group of the participants have collaborated to make a pure BURS system available for public distribution. This system, named BURG, is currently being beta-tested. Code Generation - Concepts, Tools, Techniques provides a representative summary of state-of-the-art code generation techniques and an important assessment of possible future innovations. It will be an invaluable reference work for researchers and practitioners in this important area.
Functional Programming, Glasgow 1991
Proceedings of the 1991 Glasgow Workshop on Functional Programming, Portree, Isle of Skye, 12–14 August 1991
AvRogardt Heldal,Carsten K. Holstm. fl.
Häftad, Engelska, 1992
566 kr
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The Glasgow functional programming group has held a workshop each summer since 1988. The entire group, accompanied by a selection of colleagues from other institutions, retreats to a pleasant Scottish location for a few days. Everyone speaks briefly, enhancing coherence, cross fertilisation, and camaraderie in our work. The proceedings of the first workshop were published as a technical report. Demand for this was large enough to encourage wider publication, and subsequent proceedings have been published in the Springer-Verlag Workshops in Computing series. These are the proceedings of the-meeting held 12-14 August 1991, in Portree on the Isle of Skye. A preliminary proceedings was prepared in advance of the meeting. Most presentations were limited to a brief fifteen minutes, outlining the essentials of their subject, and referring the audience to the pre-print proceedings for details. Papers were then refereed and rewritten, and you hold the final results in your hands. A number of themes emerged at this year's workshop, including relational algebra and its application to hardware design, partial evaluation and program transformation, implementation techniques, and strictness analysis. We were especially pleased to see applications of functional programming emerge as a theme. One of the sessions was devoted to a lively discussion of applications, and was greatly enhanced by our industrial participants. The workshop was organised by Kei Davis, Cordelia Hall, Rogardt Heldal, Carsten Kehler Holst, John Hughes, John O'Donnell, and Satnam Singh all from the University of Glasgow.
Object Orientation in Z
AvSusan Stepney,Rosalind Bardenm. fl.
Häftad, Engelska, 1992
566 kr
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This collection of papers draws together a variety of approaches for adding ob ject orientation to the Z formal specification language. These papers are not a conference proceedings, but have a slightly more complicated his tory. This work has grown and evolved from some work originally done in the ZIP project, under the United Kingdom's Department of Trade and Industry (DTI) IED initiative. ZIP is a three year project which aims to make the use of the Z specification language more widespread. It hopes to achieve this by producing a standard for Zj developing a method for Zj building tool support for Zj and carrying out research into refinement, proof and concurrency in Z. The ZIP methods work includes performing a survey of current Z practitioners (reported in [Barden et al. 1992])j investigating current styles and methods of Z usagej and developing a Z Method handbook (available early in 1993). As part of this work, we carried out a comparative study of the ways in which object orientation has been combined with Z. A summary of that work has been published as [Stepney et al. 1992].
Z User Workshop, York 1991
Proceedings of the Sixth Annual Z User Meeting, York 16–17 December 1991
AvJ. E. Nicholls
Häftad, Engelska, 1992
566 kr
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In ordinary mathematics, an equation can be written down which is syntactically correct, but for which no solution exists. For example, consider the equation x = x + 1 defined over the real numbers; there is no value of x which satisfies it. Similarly it is possible to specify objects using the formal specification language Z [3,4], which can not possibly exist. Such specifications are called inconsistent and can arise in a number of ways. Example 1 The following Z specification of a functionf, from integers to integers "f x : ~ 1 x ~ O· fx = x + 1 (i) "f x : ~ 1 x ~ O· fx = x + 2 (ii) is inconsistent, because axiom (i) gives f 0 = 1, while axiom (ii) gives f 0 = 2. This contradicts the fact that f was declared as a function, that is, f must have a unique result when applied to an argument. Hence no suchfexists. Furthermore, iff 0 = 1 andfO = 2 then 1 = 2 can be deduced! From 1 = 2 anything can be deduced, thus showing the danger of an inconsistent specification. Note that all examples and proofs start with the word Example or Proof and end with the symbol.1.
ALPUK92
Proceedings of the 4th UK Conference on Logic Programming, London, 30 March – 1 April 1992
AvKrysia Broda
Häftad, Engelska, 1992
566 kr
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Since its conception nearly 20 years ago, logic programming has been developed to the point where it now plays an important role in areas such as database theory, artificial intelligence and software engineering. There are, however, still many outstanding research issues which need to be addressed, and the UK branch of the Association for Logic Programming was set up to provide a forum where the flourishing research community could discuss important issues which were often by- passed at the larger international conferences. This volume contains the invited papers, refereed papers and tutorials presented at the 4th ALPUK Conference, which aimed to broaden the frontiers of logic programming by encouraging interaction between it and other related disciplines. The papers cover a variety of technical areas, including concurrent logic languages and their semantics, applications of logic languages to other (non-classical) logical systems, modules, types and error-handling, and the distributed execution of Prolog programs. The wide scope of the papers refelects the breadth of interest in this important area of computer science. ALPUK 92 provides a comprehensive overview of current progress being made in logic programming research. It will be of interest to all workers in the field, especially researchers, postgraduate students, and research and development workers in industry.
AI and Cognitive Science ’91
University College, Cork, 19–20 September 1991
AvHumphrey Sorensen
Häftad, Engelska, 1992
534 kr
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This book contains the edited versions of papers presented at the Fourth Irish Conference on Artificial Intelligence and Cognitive Science (AICS'91), which was held at University College, Cork, Ireland on 19-20 September 1991. The main aims of this annual conference series are to promote AI research in Ireland, to provide a forum for the exchange of ideas amongst different disciplines concerned with the study of cognition, and to provide an opportunity for industry to see what research is being carried out in Ireland and how it might benefit from the results of this research. While most of the participants at the conference came from universities and companies within Ireland, a positive feature was the interest shown from outside the country, resulting in participants from Britain, USA and Italy. The keynote speaker was Professor James A. Bowen, North Carolina State University, who spoke on future trends in knowledge representation. The topics covered in the presented papers included fundamental approaches to AI, natural language, knowledge representation, information retrieval, deduction, epistemics and vision. The sponsors of the conference were Digital Equipment Co. (Galway) and Eolas, the Irish Science and Technology Board. March 1992 Humphrey Sorensen Contents Section 1: Foundations and Methodologies Toward a New Foundation for Cognitive Science S. 6 Nuallain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Towards an Adequate Cognitive Model of Analogical Mapping M. T. Keane and S. Duff. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 HOST: A HOlistic System Theory G. Hartnett and H. Sorensen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Formal Aspects of Measurement
Proceedings of the BCS-FACS Workshop on Formal Aspects of Measurement, South Bank University, London, 5 May 1991
AvTim Denvir,Rosalind Hermanm. fl.
Häftad, Engelska, 1992
566 kr
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This book contains the eight invited papers presented at the workshop on Formal Aspects of Measurement held at South Bank University on 5th May 1991, organised by the British Computer Society's Special Interest Group on Formal Aspects of Computer Science (FACS). In addition, there are five papers which have been included because of their relevance to the subject of the workshop. The book represents something of a landmark in software engineering research. The British Computer Society's Special Interest Group on Formal Aspects of Computer Science (FACS) has an established reputa tion among researchers in formal methods of software specification, design and validation. These researchers have not in the past paid much attention to software measurement. Perhaps software measurement re search was felt to have emphasised its management potential at the expense of proper scientific foundations? At any rate, for the FACS group to host a workshop in this field is recognition of the significant body of formal measurement theories and techniques which has now become available to software engineers.

Workshops in Computing – serie

Specification and Verification of Concurrent Systems

AI and Cognitive Science ’89

Functional Programming

Semantics for Concurrency

Persistent Object Systems

Z User Workshop

Formal Methods for Trustworthy Computer Systems (FM89)

Security and Persistence

Women into Computing

Software Re-use, Utrecht 1989

AI and Cognitive Science ’90

4th Refinement Workshop

Designing Correct Circuits

IV Higher Order Workshop, Banff 1990

Functional Programming, Glasgow 1990

Z User Workshop, Oxford 1990

Specifications of Database Systems

7th UK Computer and Telecommunications Performance Engineering Workshop

ALPUK91

Declarative Programming, Sasbachwalden 1991

Building Interactive Systems

Logic Program Synthesis and Transformation

5th Refinement Workshop

Code Generation — Concepts, Tools, Techniques

Functional Programming, Glasgow 1991

Object Orientation in Z

Z User Workshop, York 1991

ALPUK92

AI and Cognitive Science ’91

Formal Aspects of Measurement