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Dissertations / Theses on the topic 'Formal methods for software engineering'

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Published: 25 May 2024

Last updated: 31 July 2025

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1

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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2

Glorio, Emanuele. "Formal methods for service oriented software engineering." Doctoral thesis, Università Politecnica delle Marche, 2013. http://hdl.handle.net/11566/242717.

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Il Service-Oriented Computing sta diventando sempre più importante e la proliferazione del grid e cloud computing sta incrementando ancora questa tendenza. Di conseguenza, sempre più aziende stanno esponendo su Internet i loro Web Service. Questo fatto ha l’effetto di trasformare il web da un contenitore di dati ad un contenitore di servizi. In questo scenario, un ingegnere del software è chiamato a progettare un’applicazione tenendo in considerazione l’opportunità/ bisogno di riusare servizi esistenti. Ciò richiede due cose: - una metodologia di ingegneria del software che parta dagli o

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3

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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4

Spegni, Francesco. "Formal methods for practical reverse engineering and software verification." Doctoral thesis, Università Politecnica delle Marche, 2012. http://hdl.handle.net/11566/242049.

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Software development processes are committed at producing high quality software system. Traditionally, this goal is reached through systematic testing. This thesis project analyzes the possibility of applying mathematical logic and so-called formal methods into the software development process. In fact software testing has two major limitations with respect to verification by means of software testing: every test can show correctness for one possible behavior, while formal methods verification shows that correctness, if proved, holds for all the executions of the system. Furthermore, te

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5

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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6

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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7

He, Xudong. "Integrating formal specification and verification methods in software development." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54535.

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This dissertation is a part of an intended long-term research project with the objectives to make software development more scientific and rigorous, thereby to achieve better software quality and to facilitate automated software production; and has two major components: the design of the specification transition paradigm for software development and the theoretical study of the system specification phase in the paradigm. First, after an extensive analysis and comparison of various formalisms, a paradigm for integrating various formal specification and verification methods (predicate transiti

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8

Wang, Shuo Yilmaz Levent. "Exploring the integration of model-based formal methods into software design education." Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/WANG_SHUO_14.pdf.

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9

Piveropoulos, Marios. "Requirements engineering for hard real-time systems." Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310980.

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10

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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11

Mansour, Riham. "Formal Analysis and Design for Engineering Security." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/26486.

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Engineering secure software remains a significant challenge for todayâ s software organizations as they struggle to understand the implications of security on their systems and develop systems that guarantee specified software security properties. The use of formal methods that are based on mathematical models has long been advocated in the development of secure systems, yet the promise of formal methods has not been realized. This is due to the additional discipline needed to formulate precisely the requirements and due complexities that often confront engineers. Further, the cost of develop

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12

Ibrahim, Rosziati. "Formal methods applied to component-based systems." Thesis, Queensland University of Technology, 2000.

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13

Grover, Russell J. "An Exploration of Formal Methods and Tools Applied to a Small Satellite Software System." DigitalCommons@USU, 2010. https://digitalcommons.usu.edu/etd/743.

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Formal system modeling has been a topic of interest in the research community for many years. Modeling a system helps engineers understand it better and enables them to check different aspects of it to ensure that there is no undesired or unexpected behavior and that it does what it was designed to do. This thesis takes two existing tools that were created to aid in the designing of spacecraft systems and creates a layer to connect them together and allow them to be used jointly. The first tool is a library of formal descriptions used to specify spacecraft behavior in an unambiguous manner. Th

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14

Kotze, Paula. "The use of formal methods in the design of interactive authoring support environments." Thesis, University of York, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387556.

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15

Cabral, Glauber Módolo. "Criação de uma biblioteca padrão para a linguagem HasCASL." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/275798.

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Orientador: Arnaldo Vieira Moura<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação<br>Made available in DSpace on 2018-08-16T20:14:05Z (GMT). No. of bitstreams: 1 Cabral_GlauberModolo_M.pdf: 1025512 bytes, checksum: 7aaf4d32142384e7200596499be77cca (MD5) Previous issue date: 2010<br>Resumo: Métodos formais são ferramentas da Engenharia de Software que empregam formalismos matemáticos na construção de programas. Em geral, são compostos por uma ou mais linguagens de especificação e algumas ferramentas auxiliares. A linguagem de especificação algébrica Commo

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16

Masi, Riccardo. "Software verification and validation methods with advanced design patterns and formal code analysis." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022.

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This thesis focuses on the description and the improvement of the host company software life cycle, with a focus on the Verification and Validation phase. The host company is an international group, the world leader in the supply of advanced technologies for the ceramic, metal, packaging industries, food and beverage, and the production of plastic containers and advanced materials. The software life cycle is an extremely important development process for building the state-of-art of software products and it is a process that requires methodology, control, and appropriate documentation. For co

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17

Barnes, Jeffrey M. "Software Architecture Evolution." Research Showcase @ CMU, 2013. http://repository.cmu.edu/dissertations/291.

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Many software systems eventually undergo changes to their basic architectural structure. Such changes may be prompted by new feature requests, new quality attribute requirements, changing technology, or other reasons. Whatever the causes, architecture evolution is commonplace in real-world software projects. Today’s software architects, however, have few techniques to help them plan such evolution. In particular, they have little assistance in planning alternatives, making trade-offs among these different alternatives, or applying best practices for particular domains. To address this, we have

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18

Gaither, Danielle. "Improving Software Quality through Syntax and Semantics Verification of Requirements Models." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404542/.

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Software defects can frequently be traced to poorly-specified requirements. Many software teams manage their requirements using tools such as checklists and databases, which lack a formal semantic mapping to system behavior. Such a mapping can be especially helpful for safety-critical systems. Another limitation of many requirements analysis methods is that much of the analysis must still be done manually. We propose techniques that automate portions of the requirements analysis process, as well as clarify the syntax and semantics of requirements models using a variety of methods, including ma

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19

Kwan, Irwin. "On the Maintenance Costs of Formal Software Requirements Specification Written in the Software Cost Reduction and in the Real-time Unified Modeling Language Notations." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/1092.

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A formal specification language used during the requirements phase can reduce errors and rework, but formal specifications are regarded as expensive to maintain, discouraging their adoption. This work presents a single-subject experiment that explores the costs of modifying specifications written in two different languages: a tabular notation, Software Cost Reduction (SCR), and a state-of-the-practice notation, Real-time Unified Modeling Language (UML). The study records the person-hours required to write each specification, the number of defects made during each specification effort, and

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Medeiros, J?nior Val?rio Gutemberg de. "Aplica??o do m?todo B ao projeto formal de software embarcado." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18679.

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Made available in DSpace on 2015-03-03T15:47:45Z (GMT). No. of bitstreams: 1 ValerioGMJpdf.pdf: 1265506 bytes, checksum: f1fe3ef975bfeb2fce1dad3319a33f34 (MD5) Previous issue date: 2009-09-09<br>This work shows a project method proposed to design and build software components from the software functional m del up to assembly code level in a rigorous fashion. This method is based on the B method, which was developed with support and interest of British Petroleum (BP). One goal of this methodology is to contribute to solve an important problem, known as The Verifying Compiler. Besides, thi

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Vadaparty, Sirisha Lakshmi. "Semantic tableaux program." CSUSB ScholarWorks, 2006. https://scholarworks.lib.csusb.edu/etd-project/2953.

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This project created a program that takes predicate calculus formulas and creates a visual Semantic Tableaux truth tree, thereby proving or disproving a conclusion. Formal methods used in developing and verifying software and hardware are mathematically based techniques for describing and reasoning about system properties. Such formal methods provide frameworks within which people specify, develop, and verify systems in a systematic, rather than ad hoc, manner. Formal methods include the more specific activities of program specification, program verification and hardware verification.

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Soares, Junior Jurandy Martins. "Teste de conformidade em contexto guiado por casos de teste do componente." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/276102.

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Orientador: Ricardo de Oliveira Anido<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação<br>Made available in DSpace on 2018-08-10T11:44:38Z (GMT). No. of bitstreams: 1 SoaresJunior_JurandyMartins_M.pdf: 1209765 bytes, checksum: d8d6bebdcb7b65ed4a9fdb7e84508766 (MD5) Previous issue date: 2006<br>Resumo: Testar um subsistema embarcado em um sistema complexo, assumindo-se que os demais subsistemas são livres de falhas, é conhecido como teste de conformidade em contexto. A complexidade deste teste reside no fato do subsistema mais externo, conhecido como cont

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23

Slaymaker, Mark Arthur. "The formalisation and transformation of access control policies." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:179cd9d2-0547-42b7-84a0-690bc4478bfb.

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Increasing amounts of data are being collected and stored relating to every aspect of an individual's life, ranging from shopping habits to medical conditions. This data is increasingly being shared for a variety of reasons, from providing vast quantities of data to validate the latest medical hypothesis, to supporting companies in targeting advertising and promotions to individuals that fit a certain profile. In such cases, the data being used often comes from multiple sources --- with each of the contributing parties owning, and being legally responsible for, their own data. Within such mode

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24

Lei, Li. "Hardware/Software Interface Assurance with Conformance Checking." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2323.

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Hardware/Software (HW/SW) interfaces are pervasive in modern computer systems. Most of HW/SW interfaces are implemented by devices and their device drivers. Unfortunately, HW/SW interfaces are unreliable and insecure due to their intrinsic complexity and error-prone nature. Moreover, assuring HW/SW interface reliability and security is challenging. First, at the post-silicon validation stage, HW/SW integration validation is largely an ad-hoc and time-consuming process. Second, at the system deployment stage, transient hardware failures and malicious attacks make HW/SW interfaces vulnerable eve

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25

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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26

Matias, Matthew John. "Program Verification of FreeRTOS using Microsoft Dafny." Cleveland State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=csu1400085349.

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27

Fayolle, Thomas. "Combinaison de méthodes formelles pour la spécification de systèmes industriels." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1078/document.

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La spécification d’un système industriel nécessite la collaboration d’un ingénieur connaissant le système à modéliser et d’un ingénieur connaissant le langage de modélisation. L'utilisation d'un langage de spécification graphique, tel que les ASTD (Algebraic State Transition Diagram), permet de faciliter cette collaboration. Dans cette thèse, nous définissons une méthode de spécification graphique et formelle qui combine les ASTD avec les langages Event-B et B. L’ordonnancement des actions de la spécification est décrit par les ASTD et le modèle de données est décrit dans la spécification Even

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28

Krishna, Aneesh. "Practical methodologies for agent-oriented conceptual modelling." Access electronically, 2006. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060815.122954/index.html.

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29

Wong, Peter Yung Ho. "Formalisations and applications of business process modelling notation." Thesis, University of Oxford, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555361.

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Business Process Modelling Notation (BPMN) is a standardised diagram notation for modelling interactive workflow processes graphically at the design stage. The primary objective of this thesis is to provide a framework for precise specifications and formal verifications of workflow processes modelled as BPMN diagrams. We provide two behavioural semantics for BPMN in the process algebra Communicating Sequential Processes (CSP). We apply existing CSP refinement orderings to both the refinement of business process diagrams and the verification of behavioural compatibility of business process coll

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30

Ribeiro, Adagenor Lobato. "Semântica e uma ferramenta para o método SADT." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1991. http://hdl.handle.net/10183/24146.

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A definição de requisitos tem sido reconhecida como uma das mais críticas e difíceis tarefas em engenharia de software. A necessidade de ferramentas de suporte é essencial. Nos dias de hoje, entre os vários métodos existentes para apoiar a fase de requisitos, destaca-se o SADT (Structured Analysis and Design Techniques) devido a sua capacidade de representar modelos. Este trabalho estabelece semântica para o método SADT, baseando-se na inter-relação do método aos sistemas de fluxo de dados (redes, grafos e máquinas de fluxo). Faz-se, inicialmente, uma abordagem operacional para a semântica de

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31

Maïga, Oumar. "An integrated language for the specification, simulation, formal analysis and enactment of discrete event systems." Thesis, Clermont-Ferrand 2, 2015. http://www.theses.fr/2015CLF22662/document.

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Cette thèse propose une méthodologie qui intègre les méthodes formelles dans la spécification, la conception, la vérification et la validation des systèmes complexes concurrents et distribués avec une perspective à événements discrets. La méthodologie est basée sur le langage graphique HILLS (High Level Language for System Specification) que nous avons défini. HiLLS intègre des concepts de génie logiciel et de théorie des systèmes pour une spécification des systèmes. Précisément, HiLLS intègre des concepts et notations de DEVS (Discrete Event System Specification), UML (Unified Modeling Langua

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32

Foughali, Mohammed. "Vérification Formelle des Modules Fonctionnels de Systèmes Robotiques et Autonomes." Thesis, Toulouse, INSA, 2018. http://www.theses.fr/2018ISAT0033.

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Les systèmes robotiques et autonomes ne cessent d’évoluer et deviennent de plus en plus impliqués dans les missions à coût considérable et/ou dans les milieux humains. Par conséquent, les simulations et campagnes de tests ne sont plus adaptées à la problématique de sûreté et fiabilité des systèmes robotiques et autonomes compte tenu (i) du caractère sérieux des défaillances éventuelles dans les contextes susmentionnés (un dommage à un robot très coûteux ou plus dramatiquement une atteinte aux vies humaines) et (ii) de la nature non exhaustive de ces techniques (les tests et simulations peuvent

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33

Santos, Simone de Oliveira. "KitSmart: Uma biblioteca de componentes para o desenvolvimento rigoroso de aplica??es Java Card com o m?todo B." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18043.

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Made available in DSpace on 2014-12-17T15:48:00Z (GMT). No. of bitstreams: 1 SimoneOS_DISSERT_capa_ate_pag44.pdf: 4276014 bytes, checksum: c178262769ab9981c0bbfc10faf1c633 (MD5) Previous issue date: 2012-02-10<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>The development of smart card applications requires a high level of reliability. Formal methods provide means for this reliability to be achieved. The BSmart method and tool contribute to the development of smart card applications with the support of the B method, generating Java Card code from B specifications. For t

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Antignac, Thibaud. "Méthodes formelles pour le respect de la vie privée par construction." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0016/document.

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Le respect de la vie privée par construction est de plus en plus mentionné comme une étape essentielle vers une meilleure protection de la vie privée. Les nouvelles technologies de l'information et de la communication donnent naissance à de nouveaux modèles d'affaires et de services. Ces services reposent souvent sur l'exploitation de données personnelles à des fins de personnalisation. Alors que les exigences de respect de la vie privée sont de plus en plus sous tension, il apparaît que les technologies elles-mêmes devraient être utilisées pour proposer des solutions davantage satisfaisantes.

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35

Fernandes, Pires Anthony. "Amélioration des processus de vérification de programmes par combinaison des méthodes formelles avec l’Ingénierie Dirigée par les Modèles." Thesis, Toulouse, ISAE, 2014. http://www.theses.fr/2014ESAE0023/document.

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Lors d’un développement logiciel, et plus particulièrement d’un développement d’applications embarquées avioniques, les activités de vérification représentent un coût élevé. Une des pistes prometteuses pour la réduction de ces coûts est l’utilisation de méthodes formelles. Ces méthodes s’appuient sur des fondements mathématiques et permettent d’effectuer des tâches de vérification à forte valeur ajoutée au cours du développement. Les méthodes formelles sont déjà utilisées dans l’industrie. Cependant, leur difficulté d’appréhension et la nécessité d’expertise pour leur mise en pratique sont un

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Garcia, Gutierrez Miguel Alfredo. "On the formalization of model driven software engineering /." Berlin : Logos-Verl, 2009. http://d-nb.info/998495778/04.

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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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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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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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Powell, Daniel. "Formal Methods For Verification Based Software Inspection." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/366466.

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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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Wang, Chen-Wei. "Model-driven development of information systems." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:9d70647c-e1b6-4cbb-b88c-707f09431db6.

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The research presented in this thesis is aimed at developing reliable information systems through the application of model-driven and formal techniques. These are techniques in which a precise, formal model of system behaviour is exploited as source code. As such a model may be more abstract, and more concise, than source code written in a conventional programming language, it should be easier and more economical to create, to analyse, and to change. The quality of the model of the system can be ensured through certain kinds of formal analysis and fixed accordingly if necessary. Most valuably,

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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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Tosuner, Sevinc. "A case study on software development using formal methods." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ31650.pdf.

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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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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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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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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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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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Smith, Simon Robert. "Formal justification in requirements engineering." Thesis, University of York, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319716.

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Mortimer, Richard Eric. "Data re-engineering using formal transformations." Thesis, Durham University, 1998. http://etheses.dur.ac.uk/4833/.

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This thesis presents and analyses a solution to the problem of formally re- engineering program data structures, allowing new representations of a program to be developed. The work is based around Ward's theory of program transformations which uses a Wide Spectrum Language, WSL, whose semantics were specially developed for use in proof of program transformations. The re-engineered code exhibits equivalent functionality to the original but differs in the degree of data abstraction and representation. Previous transformational re-engineering work has concentrated upon control flow restructuring,

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