Concurrency Control
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Um modelo de memória transacional para arquiteturas heterogêneas baseado em software Cache / A transactional memory model for heterogeneous architectures based in Software Cache
The adoption of multi-core processors by the industry has pushed towards the development of new techniques to simplify programming parallel software. The technique called transactional memories is one of the most promising. This technique is able to execute multiple tasks concurrently in an optimistic way to achieve a better performance. Another advantage is
Publicado em: 2010
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2. Model checking underwater vehicles control architectures: a formal specification based approach. / Checagem de arquiteturas de controle de veículos submarinos: uma abordagem baseada em especificações formais.
The development of control architectures for Underwater Vehicles is a complex task. These control architectures might be chracterised by the following attributes: real-time, multitasking, concurrency, and distributed over communication networks. In this scenario, we have multiple processes running in parallel, possibly distributed, and engaging in communicat
Publicado em: 2009
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3. Transações reconfiguráveis para o ambiente móvel / Reconfigurable transactions for mobile environment
Dentre as tecnologias emergentes, a computação móvel tem a sua posição de destaque. Os dispositivos móveis estão mais presentes na vida das pessoas e contendo aplicações mais sofisticadas e semelhantes às executadas em computadores pessoais. Num mundo globalizado, onde o tempo é escasso e valioso, os dispositivos móveis mantêm as pessoas em cont
Publicado em: 2009
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4. Estruturas de dados concorrentes: um estudo de caso em skip graphs. / Concurrent data structures: a case-study on skip graphs
Many existing computer systems are concurrent, or, in other words, they are composed of many entities that, at the same time, operate over some set of shared resources. In this context, we must control the concurrency of the operations, otherwise the interference between them could cause inconsistencies in the shared resources or in the operations themselves
Publicado em: 2008
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5. Integration between multi-agent systems and distributed data base systems. / Integração entre sistema multi-agentes e sistemas de banco de dados distribuídos.
Multi-agent systems must offer the needed resources to allow their agents to interact and to reach their goals. An example of resource is a set of data stored in any kind of resource manager, such as a database management system. Data access must be possible even if the data is distributed, characteristic that is also present in multi-agent systems. Thus, th
Publicado em: 2008
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6. Transactional memories : prototyping and simulation of hardware implementations and a characterization of the problem of contention management in software / Memorias transacionais : prototipagem e simulação de implementações em hardware e uma caracterização para o problema de gerenciamento de contenção em software
As parallel architectures become prevalent in the computer industry, more and more programmers are required to write parallel programs and are thus being exposed to the problems related to the use of traditional mechanisms for concurrency control. Transactional memory has been devised as a means for easing the burden of writing parallel Programs: the program
Publicado em: 2008
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7. DTX: um mecanismo de controle de concorrÃncia distribuÃdo para dados XML / DTX: a mechanism of control of distributed concurrency for XML data
XML tornou-se um padrÃo amplamente utilizado na representaÃÃo e troca de dados entre aplicaÃÃes na Web. Com isso, grande volume desses dados està distribuÃdo na Web e armazenado em diversos meios de persistÃncia. SGBD relacionais que suportam XML fornecem tÃcnicas de controle de concorrÃncia para gerenciar esses dados. A estrutura dos dados XML, en
Publicado em: 2008
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8. Avaliação de resultados de ações de marketing de relacionamento / Results evaluation of relationship marketing actions
The relationship marketing begins on 1980?, stimulated by the spreading concurrency, market growing stagnation and technological development. The relationship marketing actions have the purpose of narrowing the contact between company and client, stimulating the client fidelity and looking for rentability from a series of negotiations with the same client ov
Publicado em: 2007
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9. AvaliaÃÃo de desempenho do serviÃo de controle de concorrÃncia usando Redes de Petri EstocÃstica
O processo de avaliaÃÃo de desempenho pode ser implementado atravÃs de diversos mÃtodos: mediÃÃo que à processo de coleta de informaÃÃes de um sistema real; simulaÃÃo computacional e modelos analÃticos que capturam o comportamento temporal de um sistema atravÃs de uma representaÃÃo matemÃtica. A avaliaÃÃo baseada em modelos possibilita a an
Publicado em: 2006
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10. Controle de concorrência para jogos eletrônicos baseados em máquinas virtuais
The domain of electronic games has shown an important growth in the last years. Building an electronic game is a complex task and requires a proper development toolset, including a runtime support and a programming language. Both the engine and the middleware normally employed in the development of an electronic game should meet some basic requirements, such
Publicado em: 2005
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11. SESAMO : um controlador de concorrência que implementa a serialidade semântica de forma descentralizada em sistemas de bancos de dados múltiplos com suporte a mobilidade
In a mobile multidatabase system, there is a collection of autonomous, distributed, heterogeneous and mobile component database systems which are interconnected by means of a wireless network. In such an environment, each network node can access multiple databases of that collection by means of global transactions whose concurrency is managed by a scheduler,
Publicado em: 2005
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12. Distribution manager of the Xchart runtime environment in J2EE / Gerente de distribuição do ambiente Xchart em J2EE : sistemas reativos distribuidos na tecnologia Xchart
The aim of the current project is the development of the Distribution Manager of the Xchart runtime environment. The Xchart environment as defined by the Xchart technology is composed by a set of tools that supports the development of dialogue managers of user interfaces. The specification of these dialogue managers is modular and describes the concurrent ex
Publicado em: 2005