Tasks Scheduling
Mostrando 1-12 de 50 artigos, teses e dissertações.
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1. A novel transition identification mechanism for the diesel blending and distribution scheduling problem using the discrete time representation with two time-scales granularity
ABSTRACT Transitions between tasks arise in many different scheduling problems. Sometimes transitions are undesired because they incur costs; sometimes they are undesired because they require setup time, and sometimes both. In one way or the other, frequently, transitions need to be identified and penalized in order for their frequency to be minimized. The p
Braz. J. Chem. Eng.. Publicado em: 2017-10
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2. A hybrid method for a Project Scheduling Problem
This work deals with a project scheduling problem where the tasks consume resources to be activated, but start to produce them after that. This problem is known as Dynamic Resource-Constrained Project Scheduling Problem (DRCPSP). Three methods were proposed to divide the problem into smaller parts and solve them separately. Each partial solution is obtained
Pesqui. Oper.. Publicado em: 08/04/2014
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3. Proposta de um modelo em programação linear para a solução de problemas de sistemas produtivos job shop com setup dependentes da sequência / Proposal of a linear programming model for solving problem systems job shop production with setup times sequence-dependent
Sequencing problems are very common, they happen every time there is a choice regarding the order in which several tasks can be performed. The business can be an airline, a hotel, a computer manufacturer or a university; these issues are part of their routine. The application of the sequencing techniques allows, for example, reducing the costs and fastening
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/04/2012
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4. Técnicas heurísticas de escalonamento paralelo em workflow / Heuristic scheduling techniques for parallel workflow
Com a disseminação de tecnologias de gerenciamento empresarial, empresas procuram promover serviços mais ágeis e de maior qualidade. Neste contexto, áreas como gerenciamento de workflow vêm contribuindo para uma melhor organização na distribuição de tarefas. A aproximação da área de escalonamento com workflow demonstra um grande potencial para a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2012
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5. Schedulers DEPENDENT TASKS Multiobjective FOR MONO AND RAILS, ROBUST UNCERTAINTIES OF APPLICATION / ESCALONADORES DE TAREFAS DEPENDENTES MONO E MULTIOBJETIVO PARA GRADES, ROBUSTOS ÀS INCERTEZAS DA APLICAÇÃO
The grid schedulers are responsible for deciding how to divide the tasks on the grids hosts in order to achieve the best possible performance. The lack of users knowledge about the applications demands do the informations received by the schedulers differ from the actual values that should be considered to achieve nearly optimal scheduling. This paper presen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2011
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6. UMA ABORDAGEM OTIMIZADA PARA O PROBLEMA DE ALOCAÇÃO DE EQUIPES E ESCALONAMENTO DE TAREFAS PARA A OBTENÇÃO DE CRONOGRAMAS EFICIENTES / AN OPTIMIZED APPROACH TO THE PROBLEM ALLOCATION OF TEAMS AND SCALING OF TASKS FOR OBTAINING schedules EFFICIENT
In software development, as well as any other activity of a wide range of engineering, an effective project planning is essential. Failures in planning or poor planning can cause delays and costs that, given time and budget constraints, are often unacceptable, leading to critical failures in business. One of the main activities of project planning is the pla
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/08/2011
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7. Heurísticas híbridas para o problema de programação de tarefas em máaquinas paralelas não relacionadas com penalidades por antecipação e atraso / Hybrid heuristics for the problem of scheduling tasks on unrelated parallel machines with penalties for earliness and tardiness
O presente trabalho trata o problema de sequenciamento de tarefas em máquinas paralelas não relacionadas. No problema abordado, é considerado tanto o tempo de preparação das máquinas, o qual depende da sequência de produção, quanto o tempo de processamento das tarefas, que dependem das máquinas. Cada tarefa possui uma data de entrega que deve ser c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2011
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8. Algoritmos para escalonamento de tarefas dependentes representadas por grafos acíclicos direcionados em grades computacionais / Scheduling algorithms for dependent tasks represented by directed acyclic graphs on computational grids
Computational grids are potentially large distributed systems composed of heterogeneous resources connected by a network with heterogeneous links. These systems became largely used in the execution of tasks which require large processing capacities. Because they are shared systems, task submission in grids independently originate from a number of users, lead
Publicado em: 2010
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9. Proposta de solução de problemas de scheduling considerando possibilidade de terceirização usando a técnica de otimização por colônia de formigas
Althought the scheduling-related literature has a high level of diversity, just a small group have been considering the possibility of outsource a set of tasks. During a literature review, only two papers related to this theme were found, both dealing on scheduling projects with outsource possibilities on single-machine environments. Along with this scenario
Publicado em: 2010
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10. Proposta de melhoria de tempo de resposta para o protocolo FTT-CAN : estudo de caso em aplicação automotiva
Embedded computing systems have become widely used in many areas. The greater part of those systems has time constraints and therefore they can be characterized as real time embedded systems. Nowadays, distributed computing has reached the embedded application, where some fieldbuses are already being used as communication platforms. Some important researches
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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11. Design of a passive nonlinear observer and a backstepping controller for surface vessels. / Projeto de um observador passivo não-linear e de um controlador backstepping para navios de superfície.
Dynamic Positioning Systems (DPS) are control systems used to maintain the vessel on a desired position or pre-defined path exclusively by means of active thrusters. A DPS can be separated into a set of dedicated modules with designated tasks. The most significant modules are the position and heading measurement systems, the state estimator, the controller a
Publicado em: 2010
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12. Escalonadores de tarefas dependentes para grades robustos as incetezas das informações de entrada / Robust dependent task schedulers for grid networks
Para que escalonadores em grades derivem escalonamentos, é necessário que se forneçam as demandas das aplicações e as disponibilidades dos recursos das grades. No entanto, a falta de controle centralizado, o desconhecimento dos usuários e a imprecisão das ferramentas de medição fazem com que as informações fornecidas aos escalonadores difiram dos
Publicado em: 2010