Schedule Algorithm
Mostrando 13-22 de 22 artigos, teses e dissertações.
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13. 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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14. REFINERY SCHEDULING OPTIMIZATION USING GENETIC ALGORITHMS AND COOPERATIVE COEVOLUTION / OTIMIZAÇÃO DA PROGRAMAÇÃO DA PRODUÇÃO EM REFINARIAS DE PETRÓLEO UTILIZANDO ALGORITMOS GENÉTICOS E CO-EVOLUÇÃO COOPERATIVA
This work investigates the use of Genetic Algorithms and Cooperative Coevolution in refinery scheduling optimization. Oil refineries are one of the most important examples of multiproduct continuous plants, that is, a continuous processing system that generates a number of products simultaneously. A refinery processes various crude oil types and produces a w
Publicado em: 2004
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15. Minimizing flowtime subject to optimal makespan on two identical parallel machines
We consider the problem of scheduling jobs on two parallel identical machines where an optimal schedule is defined as one that gives the smallest total flowtime (the sum of the completion time of all jobs) among the set of schedules with optimal makespan (the completion time of the latest job). Utilizing an existing optimization algorithm for the minimizatio
Pesquisa Operacional. Publicado em: 2000-06
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16. Planejamento e programação da produção em plantas multiproposito operando em batelada : proposta de uma estrategia de decomposição utilizando janelas de tempo
The problem focused in this thesis is the short term planning and scheduling of multipurpose batch plants. This is an important problem in the process industry and, because of that, intermediate storage limitations are explicitly considered. The main objective is to fulfill specific demands of final products, distributed along the horizon. It is proposed a t
Publicado em: 2000
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17. Sistema de escalonamento de processos baseado em casos
Multiple jobs that should be processed in a manufacturing plant, bank customers waiting to be served by tellers, aircrafts waiting for landing c1earances,and program tasks to be run on a computer have in common the scheduling problem that emerges whenever there is a choice concerning the order in which tasks can be performed and the assignment of tasks to se
Publicado em: 1998
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18. Escalonamento com restrição de mão-de-obra : heuristicas combinatorias e limitantes inferiores
This dissertation studies the scheduling problem under labour constraints (SPLC) and presents some strategies to obtain lower and upper bounds for this NP-hard problem. Concerning the lower bounds, two integer programming formulations are presented and the lower bounds associated with their linear relaxations are discussed. A branch-and-bound algorithm is al
Publicado em: 1998
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19. GRAPH THEORY IN OPERATIONS OF THE HYDROTHERMAL SYSTEMS / TEORIA DE GRAFOS NA OPERAÇÃO DE SISTEMAS HIDROTÉRMICOS
The search for more efficiency in the production of eletrical energy, has led several countries to re- structure their eletric sectors, traditionally under control of federal, or state governments like in England, in /spain, in New Zeland, in argentina, in Chile, in Peru (object of this work), and now in Brasil. In this new structure the profit of the privat
Publicado em: 1997
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20. Sintese comportamental de circuitos digitais utilizado SDL
System-level design methodologies allow the description of more complex systems, keeping the view of the system as a whole throughout all its developing cycle, and also allow the shortening of project development schedule. This work presents an approach to system-level design by using a specification language (SDL - Specification and Description Language) to
Publicado em: 1995
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21. Uma contribuição a programação e escalonamento de sistemas distribuidos de tempo-real
A real-time system should meet the timing requirements imposed by the application it implements, i.e., it should be predictable. A real-time system should also be easy to reconfigure in order to adapt to the changes that are likely to occur during its life time, i .e, it should be flexible. The main objective of this thesis is to contribute to the design of
Publicado em: 1993
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22. Solução de equações de redes de energia eletrica em computadores multiprocessadores
This thesis describes a methodology for decomposing the repeat solution process of the equation Ax = b into independent tasks to be done in parallel, based on the matrix inverse factors (W-matrix) with partitions. It is a matter of fact that low-cost multiprocessor computers are now available featuring supercomputer-like performances. The partitioningscheme
Publicado em: 1991