Formal Verification
Mostrando 13-24 de 53 artigos, teses e dissertações.
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13. AnÃforas Indiretas: uma RediscussÃo dos CritÃrios ClassificatÃrios / Indirect Anaphors: a Rediscussion about Classificatory Criteria
In this study we work with indirect and associative anaphors, making a rediscussion of its classificatory criteria. We analyze the anaphoric phenomenon, going beyond what is determined in the found classification. We observed that considering only the formal aspect as a definition or a distinctive factor of indirect and associative anaphors is insufficient t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/12/2009
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14. Verificação formal de sistemas discretos distribuídos. / Formal verification of distribuited discrete systems.
This work deals with the process of design and verification of complex systems, mainly real time, concurrent and distributed systems. An enumerative technique is proposed for model-checking which is capable of determining both quantitative and qualitative properties. The proposed technique detach the algorithm for labeling the formula being checked from the
Publicado em: 2009
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15. Formal verification of fair exchange protocols using the strand spaces method / Verificação formal de protocolos de trocas justas utilizando o metodo de espaços de fitas
Fair exchange protocols were first proposed as a solution to the problem of exchanging digital items, between two or more entities, without forcing them to trust each other. The popularization of the internet resulted in an increasing amount of lay users, which constantly participate in exchange transactions, such as electronic commerce (ecommerce), internet
Publicado em: 2009
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16. Formalização de workflow nets utilizando lógica linear: análise qualitativa e quantitativa
This work presents a method for qualitative and quantitative analysis of WorkFlow nets based on the proof trees of linear logic, and an approach for the verification of workflow specifications in UML through the transformation of UML Activity Diagrams into WorkFlow nets. The qualitative analysis is concerned with the proof of soundness correctness criterion
Publicado em: 2009
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17. Uma abordagem arquitetural para o desenvolvimento rigoroso de sistemas confiáveis baseados em componentes / A rigorous architectural approach to development component-based software systems
The incorporation of fault tolerance into systems normally increases their complexity, which consequently makes their analysis more difficult. Moreover, the use of exception handling mechanisms to develop robust software systems in a non-systematic manner can be a source of many design faults. This thesis presents a rigorous and architecture-centric developm
Publicado em: 2009
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18. The faces of the system putting out the work : a study with workers of the making of clothes of Cianorte and area / As faces da subcontratação do trabalho : um estudo com trabalhadoras e trabalhadores da confecção de roupas de Cianorte e região
The sector of clothes confection in Cianorte - Paraná configures itself as a net of decentralization characterized by the redimension of the subcontracted work (cooperative of faction, accomplished home, formal, informal) and by intensive presence of the women s exploiting work. His verification impelled us to investigate the reasons that took this sector t
Publicado em: 2009
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19. Segurança jurídica e modulação de efeitos no controle de constitucionalidade em matéria tributária
This scientific work objective to study the beginning of the legal security and the possibility of modulation of effect in headquarters of control of constitutionality of norms in substance tax. To reach this end, the work was divided in five chapters. In the first one of them we analyze the conception of right here employee, as well as its purpose: to stabi
Publicado em: 2009
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20. Automated formal specification generation and refinement from requirement documents
The automatic generation of formal specifications from requirements suppresses the complexity of formal models manual creation and reveals the immediate benefits of its usage, such as the possibility to carry out refinements, and property verification, which contributes to project cost reduction and quality improvement. This paper proposes a Controlled Natur
Journal of the Brazilian Computer Society. Publicado em: 2008-03
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21. Verificação formal de protocolos criptográficos : o caso dos protocolos em cascata
Ensuring the security of cryptographic protocols is not a simple task. The Dolev-Yao model, proposed in the early 80s, is an important mathematical modeling method of cryptographic protocols, enabling the analysis and verification of the safety of these protocols. But the analytical verification does not guarantee that implementations are not error-prone. In
Publicado em: 2008
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22. PREVIDÊNCIA SOCIAL: análise dos fatores que afetam a necessidade de financiamento do regime geral / SOCIAL SECURITY: analysis of factore that affect the need for financing of the general
This dissertation makes an analysis of the main factors that have affected the result of the General Regime of Social Security RGPS, pointing the reasons that generate the deficit and its relation with the market of formal work. Search to identify a set of factors that exerts influence in the prescription components and expenditure with benefits of the RGPS.
Publicado em: 2008
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23. Ações pedagógicas do professor de piano popular: um estudo de caso
This work approaches the pedagogy of popular music in a very specific context:popular piano lessons. The main objective was the investigation of existing approaches of informal music learning in popular piano lessons. The informal learning practices of music are considered by experts as essential to make the repertoire learning authentic. Based on this assum
Publicado em: 2008
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24. Contribuições para o problema de verificação de equivalência combinacional
A decrease the SAT solver solving time used to prove equivalence between the circuits. Through this technique, which was implemented in a tool called Vimplic, we have been able to dramatically reduce the overall verification time of several circuits outperforming the state-of-the-art techniques for CEC. This technique has been formalized in order to assure c
Publicado em: 2008