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Dissertations / Theses on the topic 'Formal Methoden'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Klein, Joachim, Christel Baier, Philipp Chrszon, et al. "Advances in Symbolic Probabilistic Model Checking with PRISM." Springer, 2016. https://tud.qucosa.de/id/qucosa%3A74267.

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For modeling and reasoning about complex systems, symbolic methods provide a prominent way to tackle the state explosion problem. It is well known that for symbolic approaches based on binary decision diagrams (BDD), the ordering of BDD variables plays a crucial role for compact representations and efficient computations. We have extended the popular probabilistic model checker PRISM with support for automatic variable reordering in its multi-terminal-BDD-based engines and report on benchmark results. Our extensions additionally allow the user to manually control the variable ordering at a fin

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Klein, Joachim, Christel Baier, Philipp Chrszon, et al. "Advances in probabilistic model checking with PRISM." Springer, 2018. https://tud.qucosa.de/id/qucosa%3A74265.

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The popular model checker PRISM has been successfully used for the modeling and analysis of complex probabilistic systems. As one way to tackle the challenging state explosion problem, PRISM supports symbolic storage and manipulation using multi-terminal binary decision diagrams for representing the models and in the computations. However, it lacks automated heuristics for variable reordering, even though it is well known that the order of BDD variables plays a crucial role for compact representations and efficient computations. In this article, we present a collection of extensions to PRISM.

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3

Baier, Christel, Philipp Chrszon, Clemens Dubslaff, Joachim Klein, and Sascha Klüppelholz. "Energy-Utility Analysis of Probabilistic Systems with Exogenous Coordination." Springer, 2018. https://tud.qucosa.de/id/qucosa%3A70851.

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We present an extension of the popular probabilistic model checker PRISM with multi-actions that enables the modeling of complex coordination between stochastic components in an exogenous manner. This is supported by tooling that allows the use of the exogenous coordination language Reo for specifying the coordination glue code. The tool provides an automatic compilation feature for translating a Reo network of channels into PRISM's guarded command language. Additionally, the tool supports the translation of reward monitoring components that can be attached to the Reo network to assign rewards

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4

Mishra, Satish. "Software product and process quality improvement using formal methods." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2015. http://dx.doi.org/10.18452/17222.

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Die erweiterte CSP-CASL Syntax wird dazu verwendet, sowohl positive als auch negative Testfälle zu generieren. Auf diese Weise wird sichergestellt, dass erwartetes und unerwünschtes Verhalten in den Testfäallen enthalten ist. Ferner werden Testterminologien für die CSP-CASL Spezifikation beschrieben, welche Softwareverfeinerungen und Erweiterungen untersuchen. Anschliessend wird die formale Definition von Softwareeigenschaften verwendet, um die Wiederverwendbarkeit von Testbestandteilen zu überprüfen. Diese Definitionen beschreiben die grundlegenden Eigenschaften im vorgeschlagenen Prod

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Chrszon, Philipp, Clemens Dubslaff, Christel Baier, Joachim Klein, and Sascha Klüppelholz. "Modeling Role-Based Systems with Exogenous Coordination." Springer, 2016. https://tud.qucosa.de/id/qucosa%3A70791.

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The concept of roles is a promising approach to cope with context dependency and adaptivity of modern software systems. While roles have been investigated in conceptual modeling, programming languages and multi-agent systems, they have been given little consideration within component-based systems. In this paper, we propose a hierarchical role-based approach for modeling relationships and collaborations between components. In particular, we consider the channel-based, exogenous coordination language Reo and discuss possible realizations of roles and related concepts. The static requirements on

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6

Sürmeli, Jan. "Optimale Partner offener Systeme." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17208.

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Heutzutage besteht ein komplexes Software-System häufig aus lose gekoppelten, interagierenden Komponenten. Eine Komponente ist ein offenes System, das unabhängig von anderen offenen Systemen entwickelt und später mit diesen komponiert wird. Die Komposition L+R zweier offener Systeme L und R kann sich jedoch inkorrekt verhalten, beispielsweise verklemmen (die Komponenten warten gegenseitig aufeinander), in eine Endlosschleife geraten oder unbeschränkten Speicherplatz erfordern. Ist L+R dagegen ein korrektes System, bezeichnet man L und R als Partner voneinander. Formale Methoden der Modellierun

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7

Chrszon, Philipp, Clemens Dubslaff, Sascha Klüppelholz, and Christel Baier. "Family-Based Modeling and Analysis for Probabilistic Systems." Springer, 2016. https://tud.qucosa.de/id/qucosa%3A70790.

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Feature-based formalisms provide an elegant way to specify families of systems that share a base functionality and differ in certain features. They can also facilitate an all-in-one analysis, where all systems of the family are analyzed at once on a single family model instead of one-by-one. This paper presents the basic concepts of the tool ProFeat, which provides a guarded-command language for modeling families of probabilistic systems and an automatic translation of family models to the input language of the probabilistic model checker PRISM. This translational approach enables a family-bas

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8

Chrszon, Philipp, Clemens Dubslaff, Sascha Klüppelholz, and Christel Baier. "ProFeat: Feature-oriented engineering for family-based probabilistic model checking." Springer, 2017. https://tud.qucosa.de/id/qucosa%3A70792.

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The concept of features provides an elegant way to specify families of systems. Given a base system, features encapsulate additional functionalities that can be activated or deactivated to enhance or restrict the base system’s behaviors. Features can also facilitate the analysis of families of systems by exploiting commonalities of the family members and performing an all-in-one analysis, where all systems of the family are analyzed at once on a single family model instead of one-by-one. Most prominent, the concept of features has been successfully applied to describe and analyze (software) pr

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9

Triebel, Marvin. "Preserving Data Integrity in Distributed Systems." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19590.

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Informationssysteme verarbeiten Daten, die logisch und physisch über Knoten verteilt sind. Datenobjekte verschiedener Knoten können dabei Bezüge zueinander haben. Beispielsweise kann ein Datenobjekt eine Referenz auf ein Datenobjekt eines anderen Knotens oder eine kritische Information enthalten. Die Semantik der Daten induziert Datenintegrität in Form von Anforderungen: Zum Beispiel sollte keine Referenz verwaist und kritische Informationen nur an einem Knoten verfügbar sein. Datenintegrität unterscheidet gültige von ungültigen Verteilungen der Daten. Ein verteiltes System verändert sich i

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10

Razali, Rozilawati. "Usability of semi-formal and formal methods integration : empirical assessments." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/265391/.

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11

SERAFIM, Kamila Nayana Carvalho. "Transformando modelos Scade em especificações SCR." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/20342.

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Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2017-08-08T13:40:24Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Dissertação-Transformando-modelos-xscade-em-SCR-Kamila-Serafim.pdf: 1127362 bytes, checksum: cb72514ffcaf617a6573ea197ab446c1 (MD5)<br>Made available in DSpace on 2017-08-08T13:40:24Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Dissertação-Transformando-modelos-xscade-em-SCR-Kamila-Serafim.pdf: 1127362 bytes, checksum: cb72514ffcaf617a6573ea197ab446

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12

Fredriksen, Inge. "Formal Methods for System Development." Thesis, Norwegian University of Science and Technology, Department of Engineering Cybernetics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9991.

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<p>Two main types of formal methods have been investigated, formal specification and formal verification. Focus for formal verification has been on the concept of un-timed model checking. Some dominating formal specification languages, VDM and Z, and some prominent model checkers, FDR, Spin, and LTSA, have been learnt and presented. A tutorial for the formal verification tool Spin is created. The tutorial is example driven and describes the description language Promela and the verification methods available in Spin. Care has been taken to illustrate reasoning about the results from Spin. Top

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13

Matthews, Chris, and mikewood@deakin edu au. "Fuzzy concepts and formal methods." Deakin University. School of Management Information Systems, 2001. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051201.154843.

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It has been recognised that formal methods are useful as a modelling tool in requirements engineering. Specification languages such as Z permit the precise and unambiguous modelling of system properties and behaviour. However some system problems, particularly those drawn from the information systems problem domain, may be difficult to model in crisp or precise terms. It may also be desirable that formal modelling should commence as early as possible, even when our understanding of parts of the problem domain is only approximate. This thesis suggests fuzzy set theory as a possible representati

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14

Chen, Y. "Formal methods for global synchrony." Thesis, University of Oxford, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365295.

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15

Hinchey, Michael Gerard. "Structural design and formal methods." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624390.

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16

Read, Simon. "Formal methods for VLSI design." Thesis, University of Manchester, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239786.

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17

Wood, Clark S. M. Massachusetts Institute of Technology. "A formal methods safe harbor." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122219.

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Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society, 2019<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 77-84).<br>We discuss a problem: Internet of Things devices running software are vulnerable to accidents and exploitation, a technology solution: preventing exploitable bugs by developing machine-checked proofs of software correctness and security, and a policy lever to incentivize adoption of this solution: a safe harbor from FTC unfairness prosecution for manuf

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18

Yao, Yow-Wei. "Formal methods for protocol conversion /." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487693923198251.

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19

Banks, Michael J. "On confidentiality and formal methods." Thesis, University of York, 2012. http://etheses.whiterose.ac.uk/2709/.

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The contemporary challenge of engineering verifiably secure software has motivated various techniques for measuring and regulating the flow of confidential data from systems to their users. Unfortunately, these techniques suffer from a lack of integration with modern formal methods for software development, which inhibits their application in practice. This thesis proposes a novel approach for integrating information flow security concerns with formal methods. Working in the Unifying Theories of Programming (UTP), this thesis presents a generic framework for modelling interactions between user

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20

Robertz, Daniel. "Formal computational methods for control theory." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=981070019.

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21

Tran, Sang Cong. "Applications of formal methods in engineering." Thesis, University of Warwick, 1991. http://wrap.warwick.ac.uk/60452/.

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The main idea presented in this thesis is to propose and justify a general framework for the development of safety-related systems based on a selection of criticality and the required level of integrity. We show that formal methods can be practically and consistently introduced into the system design lifecycle without incurring excessive development cost. An insight into the process of generating and validating a formal specification from an engineering point of view is illustrated, in conjunction with formal definitions of specification models, safety criteria and risk assessments. Engineerin

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22

McParland, Patrick J. "Software tools to support formal methods." Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292757.

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23

Quintas, Figueiredo de Barros Alexandra Maria. "Formal methods for rapid software prototyping." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244903.

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24

Corwin, Paul S. "Incremental Validation of Formal Specifications." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/71.

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This thesis presents a tool for the mechanical validation of formal software specifications. The tool is based on a novel approach to incremental validation. In this approach, small-scale aspects of a specification are validated, as part of the stepwise refinement of a formal model. The incremental validation technique can be considered a form of "lightweight" model checking. This is in contrast to a "heavyweight" approach, wherein an entire large-scale model is validated en masse. The validation tool is part of a formal modeling and specification language (FMSL), used in software engineerin

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25

Sertkaya, Baris. "Formal Concept Analysis Methods for Description Logics." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1215598189927-85390.

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This work presents mainly two contributions to Description Logics (DLs) research by means of Formal Concept Analysis (FCA) methods: supporting bottom-up construction of DL knowledge bases, and completing DL knowledge bases. Its contribution to FCA research is on the computational complexity of computing generators of closed sets.

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26

Powell, Daniel, and n/a. "Formal Methods For Verification Based Software Inspection." Griffith University. School of Computing and Information Technology, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030925.154706.

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Useful processes, that are independently repeatable, are utilised in all branches of science and traditional engineering disciplines but seldom in software engineering. This is particularly so with processes used for detection and correction of defects in software systems. Code inspection, as introduced by Michael Fagan at IBM in the mid 1970's is widely recognised as an effective technique for finding defects in software. Despite its reputation, code inspection, as it is currently practiced, is not a strictly repeatable process. This is due to the problems faced by inspectors when they attemp

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27

Wood, Kenneth Robert. "Parallel logic simulation and applied formal methods." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315774.

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28

Higgs, Clive Richard. "Formal methods and reuse in software engineering." Thesis, Cardiff University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264614.

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29

Sertkaya, Barış. "Formal concept analysis methods for description logics." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1215598189927-85390.

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30

Dellabani, Mahieddine. "Formal methods for distributed real-time systems." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAM090/document.

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Nowadays, real-time systems are ubiquitous in several application domains.Such an emergence led to an increasing need of performance (resources,availability, concurrency, etc.) and initiated a shift from theuse of single processor based hardware platforms, to large setsof interconnected and distributed computing nodes. This trend introduced the birthof a new family of systems that are intrinsically distributed, namelyemph{Networked Embedded Systems}.Such an evolution stems from the growing complexity of real-time softwareembedded on such platforms (e.g. electronic control in avionicsand automo

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31

Bachrach, Hillel E. "Formal methods for design automation application development." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43427.

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32

Sertkaya, Baris. "Formal Concept Analysis Methods for Description Logics." Doctoral thesis, Technische Universität Dresden, 2007. https://tud.qucosa.de/id/qucosa%3A23613.

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This work presents mainly two contributions to Description Logics (DLs) research by means of Formal Concept Analysis (FCA) methods: supporting bottom-up construction of DL knowledge bases, and completing DL knowledge bases. Its contribution to FCA research is on the computational complexity of computing generators of closed sets.

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33

Todorov, Vassil. "Automotive embedded software design using formal methods." Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASG026.

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La part croissante des fonctions d'assistance à la conduite, leur criticité, ainsi que la perspective d'une certification de ces fonctions, rendent nécessaire leur vérification et leur validation avec un niveau d'exigence que le test seul ne peut assurer.Depuis quelques années déjà d’autres domaines comme l’aéronautique ou le ferroviaire sont soumis à des contextes équivalents. Pour répondre à certaines contraintes ils ont localement mis en place des méthodes formelles. Nous nous intéressons aux motivations et aux critères qui ont conduit à l’utilisation des méthodes formelles dans ces domaine

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34

Duplouy, Yann. "Applying Formal Methods to Autonomous Vehicle Control." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLN048/document.

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Cette thèse s'inscrit dans le cadre de la conception de véhicules autonomes, et plus spécifiquement de la vérification de contrôleurs de tels véhicules. Nos contributions à la résolution de ce problème sont les suivantes : (1) fournir une syntaxe et une sémantique pour un modèle de systèmes hybrides, (2) étendre les fonctionnalités du model checker statistique Cosmos à ce modèle et (3) valider empiriquement la pertinence de notre approche sur des cas d'étude typiques du véhicule autonome.Nous avons choisi de combiner le modèle des réseaux de Petri stochastiques de haut niveau (qui était le for

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35

Adesina, Opeyemi. "Integrating Formal Methods with Model-Driven Engineering." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36269.

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This thesis presents our method to integrate formal methods with model-driven engineering. Although a large amount of literature exists with the goal of facilitating the adoption of formal methods for educational and industrial practice, yet the adoption of formal methods in academia and industry is poor. The goal of this research is to improve the adoption of formal methods by automating the generation of formal methods code while maintaining scalability and bridging the gaps between formal analysis and actual implementation of the complete system. Our approach is based on generating formal

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36

Ortmeier, Frank. "Formale Sicherheitsanalyse /." Berlin : Logos-Verl, 2006. http://deposit.ddb.de/cgi-bin/dokserv?id=2827574&prov=M&dok_var=1&dok_ext=htm.

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Ortmeier, Frank. "Formale Sicherheitsanalyse." Berlin Logos-Verl, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2827574&prov=M&dok_var=1&dok_ext=htm.

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38

Lisowski, Matthew A. "Development of a target recognition system using formal and semi-formal software modeling methods." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA386925.

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Thesis (M.S. in Software Engineering) Naval Postgraduate School, Dec. 2000.<br>Thesis advisors, Neil Rowe, Man-Tak Shing. "December 2000." Includes bibliographical references (p. 101-102). Also available in print.

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39

Cohen, Raphaël P. "Formal Verification and Validation of Convex Optimization Algorithms For model Predictive Control." Thesis, Toulouse, ISAE, 2018. http://www.theses.fr/2018ESAE0030/document.

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L’efficacité des méthodes d’optimisation modernes, associée à l’augmentation des ressources informatiques, a conduit à la possibilité d’utiliser ces algorithmes d’optimisation en temps réel agissant dans des rôles critiques. Cependant, cela ne peut se produire sans porter une certaine attention à la validité de ces algorithmes. Ce doctorat traite de la vérification formelle des algorithmes d'optimisation convexe lors qu'ils sont utilisés pour la guidance de systèmes dynamiques. En outre, nous démontrons comment les preuves théoriques des algorithmes d'optimisation en temps réel peuvent être ut

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40

Kühne, Ulrich. "Advanced automation in formal verification of processors." Aachen Shaker, 2009. http://d-nb.info/998313092/04.

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41

Lai, Albert Y. C. "A tool for a formal refinement method." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0019/MQ49738.pdf.

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42

Marshall, L. S. "A formal description method for user interfaces." Thesis, University of Manchester, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377673.

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43

Lunglhofer, Jon R. (Jon Richard). "Complete safety software testing : a formal method." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/88311.

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44

Shands, Deborah Ann. "A formal method for classifying distributed systems /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487854314871212.

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45

Jobredeaux, Romain J. "Formal verification of control software." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53841.

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In a context of heightened requirements for safety-critical embedded systems and ever-increasing costs of verification and validation, this research proposes to advance the state of formal analysis for control software. Formal methods are a field of computer science that uses mathematical techniques and formalisms to rigorously analyze the behavior of programs. This research develops a framework and tools to express and prove high level properties of control law implementations. One goal is to bridge the gap between control theory and computer science. An annotation language is extended with s

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46

Kemahlioglu, Ziya Eda. "Formal Methods of Value Sharing in Supply Chains." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4965.

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We consider a decentralized, two-echelon supply chain where the upper echelon --the supplier-- bears the inventory risk. To service the retailers, the supplier either keeps inventory reserved for each of her customers or else pools inventory to share among her customers. The common insight regarding inventory pooling is that it reduces costs and so increases profits for the supply chain party carrying inventory. However, it has recently been shown that inventory pooling may indeed reduce the total supply chain profits. We further show that inventory pooling may reduce supply chain profits even

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47

Burns, Colin Paul. "Analysing accident reports using structured and formal methods." Thesis, University of Glasgow, 2000. http://theses.gla.ac.uk/3554/.

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Formal methods are proposed as a means to improve accident reports, such as the report into the 1996 fire in the Channel Tunnel between the UK and France. The size and complexity of accident reports create difficulties for formal methods, which traditionally suffer from problems of scalability and poor readability. This thesis demonstrates that features of an engineering-style formal modelling process, particularly the structuring of activity and management of information, reduce the impact of these problems and improve the accuracy of formal models of accident reports. This thesis also contri

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48

Domingo, Lizza Tandoc. "Formal methods in specifying discrete event simulation models." Thesis, London School of Economics and Political Science (University of London), 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263339.

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Dix, A. J. "Formal methods and interactive systems : Principles and practice." Thesis, University of York, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380545.

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Herbert, J. M. J. "Application of formal methods to digital system design." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233985.

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