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August 2018 FACS a C T S
Issue 2018-1 August 2018 FACS A C T S The Newsletter of the Formal Aspects of Computing Science (FACS) Specialist Group ISSN 0950-1231 FACS FACTS Issue 2018-1 August 2018 About FACS FACTS FACS FACTS (ISSN: 0950-1231) is the newsletter of the BCS Specialist Group on Formal Aspects of Computing Science (FACS). FACS FACTS is distributed in electronic form to all FACS members. Submissions to FACS FACTS are always welcome. Please visit the newsletter area of the BCS FACS website for further details at: http://www.bcs.org/category/12461 Back issues of FACS FACTS are available for download from: http://www.bcs.org/content/conWebDoc/33135 The FACS FACTS Team Newsletter Editors Tim Denvir [email protected] Brian Monahan [email protected] Editorial Team Jonathan Bowen, John Cooke, Tim Denvir, Brian Monahan, Margaret West. Contributors to this issue Jonathan Bowen, John Cooke, Tim Denvir, Sofia Meacham. Brian Monahan, Bill Stoddart, Botond Virginas, Margaret West BCS-FACS websites BCS: http://www.bcs-facs.org LinkedIn: http://www.linkedin.com/groups?gid=2427579 Facebook: http://www.facebook.com/pages/BCS-FACS/120243984688255 Wikipedia: http://en.wikipedia.org/wiki/BCS-FACS If you have any questions about BCS-FACS, please send these to Paul Boca [email protected] 2 FACS FACTS Issue 2018-1 August 2018 Editorial Dear readers, welcome to our first issue of FACS FACTS for 2018. This year, 2018, marks the 40th anniversary of FACS. At least one editor recalls an article by Dan Simpson, member of the editorial team at the time, FACS at 10 in 1988. -
Formal Methods Specification and Verification Guidebook for Software and Computer Systems
OFFICE OF SAFETY AND MISSION ASSURANCE NASA-GB-002-95 RELEASE 1.0 FORMAL METHODS SPECIFICATION AND VERIFICATION GUIDEBOOK FOR SOFTWARE AND COMPUTER SYSTEMS VOLUME I: PLANNING AND TECHNOLOGY INSERTION JULY 1995 NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON, DC 20546 NASA-GB-002-95 Release 1.0 FORMAL METHODS SPECIFICATION AND VERIFICATION GUIDEBOOK FOR SOFTWARE AND COMPUTER SYSTEMS VOLUME I" PLANNING AND TECHNOLOGY INSERTION FOREWORD The Formal Methods Specification and Verification Guidebook for Software and Computer Systems describes a set of techniques called Formal Methods (FM), and outlines their use in the specification and verification of computer systems and software. Development of increasingly complex systems has created a need for improved specification and verification techniques. NASA's Safety and Mission Quality Office has supported the investigation of techniques such as FM, which are now an accepted method for enhancing the quality of aerospace applications. The guidebook provides information for managers and practitioners who are interested in integrating FM into an existing systems development process. Information includes technical and administrative considerations that must be addressed when establishing the use of FM on a specific project. The guidebook is intended to aid decision makers in the successful application of FM to the development of high- quality systems at reasonable cost. This is the first volume of a planned two- volume set. The current volume focuses on administrative and planning considerations for the successful application of FM. Volume II will contain more technical information for the FM practitioner, and will be released at a later date. Major contributors to the guidebook include, from the Jet Propulsion Laboratory: Rick Covington (editor), John Kelly (task lead), and Robyn Lutz; from Johnson Space Center: David Hamilton (Loral) and Dan Bowman (Loral); from Langley Research Center: Ben DiVito (VIGYAN) and Judith Crow (SRI International); and from NASA HQ Code Q: Alice Robinson. -
Computer Conservation Society
Issue Number 52 Autumn 2010 Computer Conservation Society Aims and objectives The Computer Conservation Society (CCS) is a co-operative venture between the British Computer Society (BCS), the Science Museum of London and the Museum of Science and Industry (MOSI) in Manchester. The CCS was constituted in September 1989 as a Specialist Group of the British Computer Society. It is thus covered by the Royal Charter and charitable status of the BCS. The aims of the CCS are: To promote the conservation of historic computers and to identify existing computers which may need to be archived in the future, To develop awareness of the importance of historic computers, To develop expertise in the conservation and restoration of historic computers, To represent the interests of Computer Conservation Society members with other bodies, To promote the study of historic computers, their use and the history of the computer industry, To publish information of relevance to these objectives for the information of Computer Conservation Society members and the wider public. Membership is open to anyone interested in computer conservation and the history of computing. The CCS is funded and supported by voluntary subscriptions from members, a grant from the BCS, fees from corporate membership, donations, and by the free use of the facilities of both museums. Some charges may be made for publications and attendance at seminars and conferences. There are a number of active Projects on specific computer restorations and early computer technologies and software. -
Fiendish Designs
Fiendish Designs A Software Engineering Odyssey © Tim Denvir 2011 1 Preface These are notes, incomplete but extensive, for a book which I hope will give a personal view of the first forty years or so of Software Engineering. Whether the book will ever see the light of day, I am not sure. These notes have come, I realise, to be a memoir of my working life in SE. I want to capture not only the evolution of the technical discipline which is software engineering, but also the climate of social practice in the industry, which has changed hugely over time. To what extent, if at all, others will find this interesting, I have very little idea. I mention other, real people by name here and there. If anyone prefers me not to refer to them, or wishes to offer corrections on any item, they can email me (see Contact on Home Page). Introduction Everybody today encounters computers. There are computers inside petrol pumps, in cash tills, behind the dashboard instruments in modern cars, and in libraries, doctors’ surgeries and beside the dentist’s chair. A large proportion of people have personal computers in their homes and may use them at work, without having to be specialists in computing. Most people have at least some idea that computers contain software, lists of instructions which drive the computer and enable it to perform different tasks. The term “software engineering” wasn’t coined until 1968, at a NATO-funded conference, but the activity that it stands for had been carried out for at least ten years before that. -
Online Communities: Visualization and Formalization
Online Communities: Visualization and Formalization Jonathan P. Bowen Museophile Limited, Oxford, UK [email protected] www.jpbowen.com Abstract. Online communities have increased in size and importance dramat- ically over the last decade. The fact that many communities are online means that it is possible to extract information about these communities and the con- nections between their members much more easily using software tools, despite their potentially very large size. The links between members of the community can be presented visually and often this can make patterns in the structure of sub-communities immediately obvious. The links and structures of layered com- munities can also be formalized to gain a better understanding of their modelling. This paper explores these links with some specific examples, including visualiza- tion of these relationships and a formalized model of communities using the Z notation. It also considers the development of such communities within the Com- munity of Practice social science framework. Such approaches may be applicable for communities associated with cybersecurity and could be combined for a better understanding of their development. 1 Introduction The development of collective human knowledge has always depended on communities. As communities have become more computer-based, it has become easier to monitor the activity of such interactions [7]. Recently the increasing use of online communities by the wider population (e.g., for social networking) has augmented the ways that com- munities can form and interact since geographical co-location is now much less critical than before the development of the Internet and the web [1,2]. -
Developing Verified Sequential Programs with Event-B
UNIVERSITY OF SOUTHAMPTON Developing Verified Sequential Programs with Event-B by Mohammadsadegh Dalvandi A thesis submitted in partial fulfillment for the degree of Doctor of Philosophy in the Faculty of Physical Sciences and Engineering Electronics and Computer Science April 2018 UNIVERSITY OF SOUTHAMPTON ABSTRACT FACULTY OF PHYSICAL SCIENCES AND ENGINEERING ELECTRONICS AND COMPUTER SCIENCE Doctor of Philosophy by Mohammadsadegh Dalvandi The constructive approach to software correctness aims at formal modelling of the in- tended behaviour and structure of a system in different levels of abstraction and verifying properties of models. The target of analytical approach is to verify properties of the final program code. A high level look at these two approaches suggests that the con- structive and analytical approaches should complement each other well. The aim of this thesis is to build a link between Event-B (constructive approach) and Dafny (analytical approach) for developing sequential verified programs. The first contribution of this the- sis is a tool supported method for transforming Event-B models to simple Dafny code contracts (in the form of method pre- and post-conditions). Transformation of Event-B formal models to Dafny method declarations and code contracts is enabled by a set of transformation rules. Using this set of transformation rules, one can generate code contracts from Event-B models but not implementations. The generated code contracts must be seen as an interface that can be implemented. If there is an implementation that satisfies the generated contracts then it is considered to be a correct implementation of the abstract Event-B model. A tool for automatic transformation of Event-B models to simple Dafny code contracts is presented. -
Facing the Challenge of Automated Negotiation with Humans
Facing the Challenge of Automated Negotiation with Humans A dissertation submitted by Angela Fabregues Vinent at Universitat Aut`onomade Barcelona to fulfill the degree of PhD in Computer Science. Bellaterra, September 18th, 2012 Director: Prof. Carles Sierra Tutor: Dr. Josep Puyol Elaborated at: Institut d’ Investigaci´o en Intel·lig`encia Artificial Consejo Superior de Investigaciones Cient´ıficas (IIIA-CSIC) Acknowledgements Voldria agrair a molta gent el temps que ha compartit amb mi aquests darrers anys corresponents a la realitzaciod'aquesta tesi doctoral. Especialment, voldria donar les graciesa en Juan Carlos. Sempre m'has acompanyat. Sempre m'has ajudat. Sempre has estat allaquan t'he necessitat, ja fossis al meu costat o a milles enfora. Ara que nos veim cada dia, esper no te cansis de jo. T'estim! Molts coneixements previs he hagut de menester. Molts altres els he adquirit pel cam.L'escola, l'institut, la carrera i el mastera l'IIIA m'han aportat molts d'ells. Tambeel meu pas per l'empresa privada, per tot arreu s'apren. Els valors, en canvi, s'aprenen a casa. Els vaig aprendre a Menorca graciesals meus pares i tambeals meus germans. Papa! Mama! Me vau donar una infanciaimpressionant, envoltada d'un entorn ple de coses per experimentar sentint-me segura i protegida. Me vau deixar creixer,que formessa meva propia personalitat, que anesagafant responsabilitats, i que fos lliure de decidir per jo mateixa lo que ningumespodia decidir. Vau conar en jo i me vau nancar els estudis a Barcelona. Casi res! Moltes graciesper tot. Bep, amb tu vaig aprendre a enraonar, a donar mil voltes a ses coses i a poder veure-les des de diferents punts de vista. -
Engineering Trustcom/Bigdatase 2018
2018 17th IEEE International Conference on Trust, Security and Privacy in Computing and Communications/ 12th IEEE International Conference on Big Data Science and Engineering (TrustCom/BigDataSE 2018) New York, New York, USA 31 July - 3 August 2018 Pages 1-650 IEEE Catalog Number: CFP18TRU-POD ISBN: 978-1-5386-4389-1 1/3 Copyright © 2018 by the Institute of Electrical and Electronics Engineers, Inc. All Rights Reserved Copyright and Reprint Permissions: Abstracting is permitted with credit to the source. Libraries are permitted to photocopy beyond the limit of U.S. copyright law for private use of patrons those articles in this volume that carry a code at the bottom of the first page, provided the per-copy fee indicated in the code is paid through Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923. For other copying, reprint or republication permission, write to IEEE Copyrights Manager, IEEE Service Center, 445 Hoes Lane, Piscataway, NJ 08854. All rights reserved. *** This is a print representation of what appears in the IEEE Digital Library. Some format issues inherent in the e-media version may also appear in this print version. IEEE Catalog Number: CFP18TRU-POD ISBN (Print-On-Demand): 978-1-5386-4389-1 ISBN (Online): 978-1-5386-4388-4 ISSN: 2324-898X Additional Copies of This Publication Are Available From: Curran Associates, Inc 57 Morehouse Lane Red Hook, NY 12571 USA Phone: (845) 758-0400 Fax: (845) 758-2633 E-mail: [email protected] Web: www.proceedings.com 2018 17th IEEE International Conference On Trust, Security -
Towards Verified Systems
TOWARDS VERIFIED SYSTEMS edited by Jonathan Bowen TOWARDS VERIFIED SYSTEMS edited by Jonathan Bow en safemos i This page delib erately left blank for publisher's use ii This page delib erately left blank for publisher's use iii This page delib erately left blank for publisher's use iv This page delib erately left blank for publisher's use Contents Foreword xvii Preface xix Contact Addresses xxiii I Intro duction 1 1 Safety-Critical Systems and Formal Metho ds 3 1.1 A Brief Historical Persp ective ::::::::::::::::::::::::: 3 1.2 Safety-critical Computer Systems ::::::::::::::::::::::: 5 1.2.1 Dep endable computer systems :: :: :: :: :: ::: :: :: :: :: 6 1.2.2 Formal metho ds ::::::::::::::::::::::::::::: 7 1.2.3 The cost of software safety ::::::::::::::::::::::: 9 1.3 Industrial-scale Examples of Use :: ::: :: :: :: :: ::: :: :: :: :: 11 1.3.1 Aviation ::::::::::::::::::::::::::::::::: 12 1.3.2 Railway systems :: :: :: ::: :: :: :: :: ::: :: :: :: :: 13 1.3.3 Nuclear p ower plants :: :: ::: :: :: :: :: ::: :: :: :: :: 13 1.3.4 Medical systems ::::::::::::::::::::::::::::: 14 1.3.5 Ammunition control :: :: ::: :: :: :: :: ::: :: :: :: :: 16 1.3.6 Emb edded micropro cessors ::::::::::::::::::::::: 17 1.4 Areas of Application of Formal Metho ds :: :: :: :: ::: :: :: :: :: 18 1.4.1 Requirements capture ::::::::::::::::::::::::: 19 1.4.2 Design : ::: :: :: :: :: ::: :: :: :: :: ::: :: :: :: :: 19 1.4.3 Compilation ::::::::::::::::::::::::::::::: 20 1.4.4 Programmable hardware :: ::: :: :: :: :: ::: :: :: :: :: 21 1.4.5 Do cumentation ::::::::::::::::::::::::::::: -
Current Issue of FACS FACTS
Issue 2021-2 July 2021 FACS A C T S The Newsletter of the Formal Aspects of Computing Science (FACS) Specialist Group ISSN 0950-1231 FACS FACTS Issue 2021-2 July 2021 About FACS FACTS FACS FACTS (ISSN: 0950-1231) is the newsletter of the BCS Specialist Group on Formal Aspects of Computing Science (FACS). FACS FACTS is distributed in electronic form to all FACS members. Submissions to FACS FACTS are always welcome. Please visit the newsletter area of the BCS FACS website for further details at: https://www.bcs.org/membership/member-communities/facs-formal-aspects- of-computing-science-group/newsletters/ Back issues of FACS FACTS are available for download from: https://www.bcs.org/membership/member-communities/facs-formal-aspects- of-computing-science-group/newsletters/back-issues-of-facs-facts/ The FACS FACTS Team Newsletter Editors Tim Denvir [email protected] Brian Monahan [email protected] Editorial Team: Jonathan Bowen, John Cooke, Tim Denvir, Brian Monahan, Margaret West. Contributors to this issue: Jonathan Bowen, Andrew Johnstone, Keith Lines, Brian Monahan, John Tucker, Glynn Winskel BCS-FACS websites BCS: http://www.bcs-facs.org LinkedIn: https://www.linkedin.com/groups/2427579/ Facebook: http://www.facebook.com/pages/BCS-FACS/120243984688255 Wikipedia: http://en.wikipedia.org/wiki/BCS-FACS If you have any questions about BCS-FACS, please send these to Jonathan Bowen at [email protected]. 2 FACS FACTS Issue 2021-2 July 2021 Editorial Dear readers, Welcome to the 2021-2 issue of the FACS FACTS Newsletter. A theme for this issue is suggested by the thought that it is just over 50 years since the birth of Domain Theory1. -
1 Publications
1 Publications Chronological list [1] Martin Fränzle. Verification of compilers for recursive occam-like languages. ProCoS Technical Report Kiel MF 8/1, Christian-Albrechts-Universität Kiel, Germany, 1990. [2] Martin Fränzle. Operational failure approximation. In Dines Bjørner, Hans Langmaack, and C. A. R. Hoare, editors, Monograph of the ESPRIT BRA 3104 ProCoS (Provably Correct Systems), pages 165–206. Technical Report, Dept. of Computer Science, Technical University of Denmark, 1992. [3] B. Buth, K.-H. Buth, M. Fränzle, B. von Karger, Y. Lakhneche, H. Langmaack, and M. Müller- Olm. Provably correct compiler development and implementation. In U. Kastens and P. Pfahler, editors, Compiler Construction, volume 641 of Lecture Notes in Computer Science, pages 141–155. Springer-Verlag, 1992. [4] Jonathan P. Bowen, Martin Fränzle, Ernst-Rüdiger Olderog, and Anders P. Ravn. Developing correct systems. In Proc. 5th Euromicro Workshop on Real-Time Systems, Oulu, Finland, pages 176–189. IEEE Computer Society Press, June 1993. [5] Martin Fränzle and Markus Müller-Olm. Drift and granularity of time in real-time system implementation. ProCoS Technical Report Kiel MF 10/2, Christian-Albrechts-Universität Kiel, Germany, August 1993. [6] Martin Fränzle and Burghard von Karger. Proposal for a programming language core for ProCoS II. ProCoS Technical Report Kiel MF 11/3, Christian-Albrechts-Universität Kiel, Ger- many, August 1993. [7] M. R. Hansen, E.-R. Olderog, M. Schenke, M. Fränzle, B. von Karger, M. Müller-Olm, and H. Rischel. A Duration Calculus semantics for real-time reactive systems. ProCoS II document [OLD MRH 1/1], Oldenburg Universität, Germany, September 1993. [8] Martin Fränzle and Markus Müller-Olm. -
August 2014 FACS a C T S
Issue 2014-1 August 2014 FACS A C T S The Newsletter of the Formal Aspects of Computing Science (FACS) Specialist Group ISSN 0950-1231 FACS FACTS Issue 2014-1 August 2014 About FACS FACTS FACS FACTS (ISSN: 0950-1231) is the newsletter of the BCS Specialist Group on Formal Aspects of Computing Science (FACS). FACS FACTS is distributed in electronic form to all FACS members. Submissions to FACS FACTS are always welcome. Please visit the newsletter area of the BCS FACS website for further details (see http://www.bcs.org/category/12461). Back issues of FACS FACTS are available for download from: http://www.bcs.org/content/conWebDoc/33135 The FACS FACTS Team Newsletter Editors Tim Denvir [email protected] Brian Monahan [email protected] Editorial Team Jonathan Bowen, Tim Denvir. Brian Monahan, Margaret West. Contributors to this Issue Jonathan Bowen, Tim Denvir, Eerke Boiten, Rob Heirons, Azalea Raad, Andrew Robinson. BCS-FACS websites BCS: http://www.bcs-facs.org LinkedIn: http://www.linkedin.com/groups?gid=2427579 Facebook: http://www.facebook.com/pages/BCS- FACS/120243984688255 Wikipedia: http://en.wikipedia.org/wiki/BCS-FACS If you have any questions about BCS-FACS, please send these to Paul Boca <[email protected]> 2 FACS FACTS Issue 2014-1 August 2014 Editorial Welcome to issue 2014-1 of FACS FACTS. This is the first issue produced by your new joint editors, Tim Denvir and Brian Monahan. One effect of the maturity of formal methods is that researchers in the topic regularly grow old and expire. Rather than fill the issue with Obituaries, we have taken the course of reporting on most of these sad events in brief, with references to fuller obituaries that can be found elsewhere, in particular in the FAC Journal.