On Line Scheduling
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Short-term mine scheduling targeting stationary grades
Abstract In short-term mine planning, mining scheduling is generally defined by designing dig-lines, allocated on benches. The mined ore will be sent to stockpiles, homogenization piles, or a concentration plant. The process to design dig-lines is usually done manually, whereby multiple simultaneous mining fronts are time-consuming and labour-intensive. The
REM - International Engineering Journal. Publicado em: 2022
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2. Flexible flow line with setup times: heuristic methods / Flexible flow line com tempos de setup: métodos heurísticos
This work addresses the job scheduling on a flexible flow line with separate setup times. According to the literature, this scheduling problem can be considered as a special case of the Flow Shop with multiple machines, where the jobs may skip stages. Two modeled problems have been studied. In the first scheduling problem the setup times are sequence indepen
Publicado em: 2010
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3. Escalonamento on-line eficiente de programas fork-join recursivos do tipo divisão e conquista em MPI / Efficent on-line scheduling of recursive fork-join programs on MPI
Esta Dissertação de Mestrado propõe dois novos algoritmos para tornar mais eficiente o escalonamento on-line de tarefas com dependências estritas em agregados de computadores que usam como middleware para troca de mensagens alguma implementação da MPI (até a versão 2.1). Esses algoritmos foram projetados tendo-se em vista programas construídos no mo
Publicado em: 2010
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4. 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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5. Dimensionamento e seqüenciamento de lotes de produção na indústria de suplementos para nutrição animal
This work studies the integrated lot sizing and scheduling problem in the animal feed compound industry. The lot sizing problem in this industry consists of deciding which and how much to produce in each period, in order to minimize overtime and storage costs. The sequencing problem consists of sequencing the production lots, in order to minimize the setups
Publicado em: 2008
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6. Mathematical / Statistical and Physical / Meteorological Models for Short-term Prediction of Wind Farms Output
(...)The rapid increase of the wind power penetration in the conventional grids all over the world has been requiring (from electricity companies and wind farm promoters) a special attention to the short-term prediction of wind farms output. Fomented by interest and necessity, companies and promoters are collaborating with universities and other research cen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2005
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7. Fitness estimation models applied to genetic algorithms / Aplicação de modelos de estimação de fitness em algoritmos geneticos
Genetic algorithms usually need a large number of fitness evaluations before a satisfying result can be obtained. In many real-world applications, fitness evaluation may be computationally complex and costly. In these cases, time is an essential subject in performance analysis of genetic algorithms. Therefore, genetic algorithms should provide good solutions
Publicado em: 2005
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8. Propostas de metodologias para identificação e controle inteligentes
This thesis presents proposals of methodologies for intelligent identification and control. A methodology tor nonlinear dynamic discrete time systems identification, based on the instrumental variable method and Takagi-Sugeno fuzzy model, is presented. In this methodology, which is an extension of the standard instrumental variable method, the chosen instrum
Publicado em: 2005
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9. Propostas de metodologias para identificação e controle inteligentes / Proposals of methodologies for intelligent identification and control
This thesis presents proposals of methodologies for intelligent identification and control. A methodology for nonlinear dynamic discrete time systems identification, based on the instrumental variable method and Takagi-Sugeno fuzzy model, is presented. In this methodology, which is an extension of the standard instrumental variable method, the chosen instrum
Publicado em: 2005
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10. Modelagem computacional de dados e controle inteligente no espaço de estado / State space computational data modelling and intelligent control
This study presents contributions for state space multivariable computational data modelling with discrete time invariant as well as with time varying linear systems. A proposal for Deterministic-Estocastica Modelling of noisy data, MOESP_AOKI Algorithm, is made. We present proposals forsolving the Discrete-Time Algebraic Riccati Equation as well as the asso
Publicado em: 2005
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11. Common information Model/eXtensible Markup Language (CIM/XML) to exchange data among Power Utilities Control Centers. / Common Information Model/eXtensible Markup Language (CIM/XML) na troca de informações entre centros de controle de energia elétrica.
This dissertation provides an analysis about the application of a data model based on IEC 61970 (CIM) standard a tool for exchanging operational and equipments information among different Electrical Power Utilities computing systems. The purpose of this standard is to create a mechanism for information exchange using XML, called CIM/XML a format specif
Publicado em: 2005
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12. Proposal of a Production On-line Scheduling Procedure of Flexible Manufacturing Systems based on Fuzzy. / Proposta de um procedimento de programação on-line da produção de sistemas flexíveis de manufatura baseado em lógica fuzzy.
Flexible manufacturing systems (FMS) have been designed to meet market requirements that demand products that are quality and ready to deliver. In order to meet the market requirements, the methodologies used in the FMS scheduling must consider a highly dynamic environment, where it is often necessary to meet or to react to uncertain demands and to get bette
Publicado em: 2004