Integer Operations
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. The electric boat charging problem
Abstract Paper aims This paper studies a new optimization problem called the Electric Boat Charging Problem (EBCP), which is based on the application of electric mobility in a river transport operation problem. Originality This work pioneers the studies of the electric mobility on the river operations, by proposing the EBCP. This problem includes real feat
Prod.. Publicado em: 23/09/2019
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2. Small Solid Propellant Launch Vehicle Mixed Design Optimization Approach
ABSTRACT: For a small country with limited research budget and lack of advanced space technology, it is imperative to find new approaches for the development of low-cost launch vehicles (LV), which is, among all possibilities, an interesting option for rapid access to space, focused on integration of acquired components complemented with indigenously develop
J. Aerosp. Technol. Manag.. Publicado em: 2014-09
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3. Otimização na alocação dinâmica de veículos no transporte rodoviário de cargas completas entre terminais
The domain of logistics is concerned with providing customers with the right product in the right place at the right time. In our modern economy, the faster pace and wider scope of logistic operations has led to complex management problems that have drawn the attention of both industry and the academic world Optimizing the number of vehicles for a determined
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/06/2012
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4. Modelagem integrada para a programação de voos e a alocação de frotas: abordagens baseadas em programação linear inteira e na meta-heurística colônia de formigas. / An integrated model for flight scheduling and fleet assignment based on integer linear programming and on ant colony meta-heuristic.
Este trabalho propõe modelos matemáticos e heurísticas para a definição da malha de voos de uma empresa aérea, como parte de seu planejamento operacional, visando à maior eficiência de operação frente às restrições relacionadas aos aeroportos, a equipamentos e à demanda. Em especial, é proposta uma função objetivo, baseada no momento de tran
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/05/2011
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5. Application of mixed-integer linear programming in a car seats assembling process
In this paper, a decision problem involving a car parts manufacturing company is modeled in order to prepare the company for an increase in demand. Mixed-integer linear programming was used with the following decision variables: creating a second shift, purchasing additional equipment, determining the required work force, and other alternatives involving new
Pesquisa Operacional. Publicado em: 2011-12
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6. O campo multiplicativo a partir do fórmula (-1) : desenvolvendo objetos digitais de aprendizagem e estratégias para a aprendizagem das operações com números positivos e negativos / The multiplicative field from the formula (-1) : developing strategies for operations with positive and negative numbers
Publicado em: 2011
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7. Fórmula (-1) : desenvolvendo objetos digitais de aprendizagem e estratégias para a aprendizagem das operações com números positivos e negativos
Publicado em: 2011
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8. Large discreet resource allocation: a hybrid approach based on DEA efficiency measurement.
Resource allocation is one of the traditional Operations Research problems. In this paper we propose a hybrid model for resource allocation that uses Data Envelopment Analysis efficiency measures. We use Zero Sum Gains DEA models as the starting point to decrease the computational work for the step-bystep algorithm to allocate integer resources in a DEA cont
Pesquisa Operacional. Publicado em: 2011
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9. Um modelo de otimização para as operações de produção de vapor em caldeiras industriais: um estudo de caso na indústria de alimentos
The aim of this work was to develop and apply a mathematical optimization model to support some key decisions in the steam production operation system with multiple industrial boilers. In the food industry, key decisions into this system are, normally, taken based on people experience, not through decision support tools based on operations research. The prop
Publicado em: 2011
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10. Programação de tabelas para torneios round robin simples com estádios predefinidos
Sport timetabling is a growing area of operations research and computer science. Sport timetabling problems have a great economic importance since the quality of the schedule directly influences the performance of teams and the income obtained by the sponsors and broadcasters. This great economic impact and high degree of difficulty of the problems have attr
Publicado em: 2009
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11. Agendamento otimizado das atividades de colheita de madeira em plantios de eucaliptos sob restrições operacionais, espaciais e de risco climático / Optimized harvest scheduling in eucalyptus plantations under operational, spatial and climatic risk constraints
Sustainability concerns in forest-based industries, as related to environmental, social and economic aspects, have been highlighted with crescent realism. Therefore, forest management plans must consider a greater level of details when analyzing and understanding the interaction among these aspects to prevent possible future impacts. At the tactical and oper
Publicado em: 2009
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12. Relaxação lagrangeana com fixação de variáveis aplicada ao problema de sequenciamento em uma máquina
This paper deals with the Single-machine Scheduling Problem. This kind of problem arises in several practical situations, such as the problems of planning operations on machines in a manufacturing industry. The Single-machine Scheduling Problem consists in sorting n jobs to be processed on a single machine. The jobs are independent and the machine can only e
Publicado em: 2008