Exception Handling
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. EXECUÇÃO FLEXÍVEL DE WORKFLOWS / FLEXIBLE WORKFLOW EXECUTION
Workflow management systems usually interpret a workflow definition rigidly, allowing no deviations during execution. However, there are real life situations where users should be allowed to deviate from the prescribed static workflow definition for various reasons, including lack of information about parameter values and unavailability of the required resou
Publicado em: 2005
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14. A method for modelling exceptions in component-based software development / Um metodo para modelagem de exceções em desenvolvimento baseado em componentes
Devido a grande popularização do Desenvolvimento Baseado em Componentes (DBC), ele vem sendo empregado inclusive no desenvolvimento de sistemas computacionais críticos. O emprego do DBC na construção de sistemas confiáveis evidencia a necessidade de se desenvolver componentes de software que sejam robustos e que possuam uma garantia maior do seu funcio
Publicado em: 2005
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15. Uma abordagem arquitetural para tolerancia a falhas em sistemas desoftware baseados em componentes
This work concentrates on the systematic treatment of dependability requirements during the development of modern critical software systems, such as banking and electronic commerce. Such software systems constantly evolve and are constrained by short time-to-market and low development costs requirements. As a result, the development of these modern critical
Publicado em: 2004
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16. Tecnicas de estruturação de software no desenvolvimento de sistemas-de-sistemas confiaveis
In a rapidly changing and competitive market, the industry has constantly been faced with the challenge of developing reliable and extensible software systems in shorter period of times. These systems should be able to follow the frequent evolutions due to the business requirements volatility. Furthermore, these systems are also required to be reliable, sinc
Publicado em: 2003
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17. Um modelo de definição de processos para sistemas de workflow flexiveis
This work presents a new model of process definition in workfiow systems, the PDBC model. We also present a prototype of a workfiow system which implements the PDBC model, the Thcupi server. The proposal of this new model is to allow fiexibility in workfiow systems. For this, we will use what we call partial workfiow, which is a partially defined workfiow wh
Publicado em: 2003
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18. Adaptação de componentes de software para o desenvolvimento de sistemas confiaveis
The component-based software development aims at the reduction of the development costs through the composition of reusable software components. Usually a software component must be adapted in order to agree with the design of the system. The adaptation of software components is a manner to increase the reuse of components and help developers in the composit
Publicado em: 2001
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19. Uma arquitetura de software baseada em padrões de projeto para o desenvolvimento de aplicações concorrentes confiaveis
Complex computer systems are prone to errors of many kinds, and the most reasonable way of dealing with them is to accept that any complex system has faults and to employ appropriate features for tolerating them during run time. We claim that the most beneficial way of achieving fault tolerance in complex systems is to use system structuring which has fault
Publicado em: 2001
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20. Implementação de sistemas tolerantes a falhas usando programação orientada a objetos
The major goal of this work is to develop an object-oriented architecture for software fault-tolerant applications. Object-oriented techniques, such as data abstraction, inheritance and polymorphism are explored to improve software reliability and quality. Thus, our goal is to support software fault tolerance using design diversity, so that this support can
Publicado em: 1997
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21. Integração dos mecanismos de recuperação de erros por avanço e por retrocesso
Computing systems are used in a wide variety of applications, from households appliances to satellites and nuclear plants. If products of daily use like televisions, radios and computers are not reliable, then the competitors will probably throw their manufactures out of the market and, consequently they will be subject to heavy losses. By analogy, if a bank
Publicado em: 1997
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22. A linguagem de programação Cm
Since its first definition (1985, Computer Science Department of Unicamp) the Cm programming language has experienced continuous evolution. Cm compares favorably with C++ about object-oriented features; it is also about to support concurrent and distributed programming. This thesis describes the current state of the Cm programming language and its compiler e
Publicado em: 1993
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23. Uma maquina virtual para ADA num sistema com multiplos processadores
Ada is a general purpose programming language, includes features found in classical languages such Pascal Algol, as well as features for modular programming system and real-time programming, which are usually found only in specific languages. We present in this thesis a proposal for a run-time system for Ada. Due to the complexity of the language, we treat o
Publicado em: 1985
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24. Vicryl (polyglactin 910) in cataract surgery. A controlled trial.
In a controlled, randomized trial in 45 cataract operations a new synthetic absorbable suture (8-0 monofilament Vicryl, made by Ethicon), was compared with monofilament nylon or virgin silk normally used. There was a higher incidence of early complications-hyphaema, shallow anterior chamber, and choroidal detachment (15-4 per cent v. 0 per cent)-with the abs