Packing Problems
Mostrando 13-24 de 31 artigos, teses e dissertações.
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13. Convergence time to the Nash equilibrium in packing and load balancing games / Tempo de convergencia para o equilibrio de Nash nos jogos empacotamento de itens e balanceamento de carga
In this thesis, we study game-theorical versions of the bin packing and load balancing problems. We consider that the implementation of a centralized controller algorithm is not feasible, making the entities that participate in the system act in a selfish way. Thus, the selfish choice of the strategies by the entities may or may not lead to a stable state of
Publicado em: 2010
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14. Modelos de programação matemática para problemas de carregamento de caixas dentro de contêineres
O objeto de estudo deste trabalho é um caso particular dos problemas de corte e empacotamento, conhecido como problemas de carregamento de contêineres. Estes problemas consistem em arranjar caixas retangulares ortogonalmente dentro de contêineres (ou caminhões, vagões ferroviários e paletes), de maneira a otimizar uma função objetivo, por exemplo, ma
Publicado em: 2009
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15. Plastic packing final destination / A reciclagem das embalagens plásticas de óleo lubrificante e a gestão ambiental: um modelo a ser construído
The final destination, after use, of plastic packaging with motor oil residues is one problem worldwide. The polymer resistance to biodegradability and the residual oil contamination represents a great environmental risk. The final destination of plastic packaging is an ethical and legal claim in the comp anies. This work presents a review of a waste managem
Publicado em: 2008
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16. Avaliação da inflência da diferênça de temperatura entre as placas de um molde de injeção no empenamento de peças injetadas
Nowadays, warpage is one of the main concerns at the design stage and manufacturing of plastic components. Warpage hinders the achievement of specified tolerances in the project, resulting in financial losses due to manufacturing problems and consumer complaints. Usually, solution of such problems relies on the knowledge of the designer or process technician
Publicado em: 2008
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17. Aplicação de moire de projeção com deslocamento de fase na geração de modelos digitais topograficos de orgão vegetais / Applications of projection moire technique with phase shifiting to agricultural engineering problems
Shape definition of bodies exhibiting symmetric, non symmetric or irregular geometry is of fundamental necessity for science and technology developments. Applications of objects shape survey is reflected on several science fields as biology, human prosthesis and orthesis, medical diagnosis, prediction of surgical results, orthopedics, veterinary medicine, in
Publicado em: 2008
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18. Reticulados e codigos / Lattices and codes
We approach here some problems related to minimizing the error probability in signals transmission over Gaussian and Rayleigh channels. Algebraic ideal lattice theory is used to construct rotations of the n-dimensional integer lattice via cyclotomic fields. This construction allows to evaluate the minimum product distance of the lattice, parameter which cont
Publicado em: 2008
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19. Aspectos e impactos ambientais associados ao processo de injeção da blenda ppo/psai através do inventário do ciclo de vida
In view of that some environmental problems are associated to the industrial production, it becomes necessary to work and to apply concepts for the sustainability. Spite of complex system its possible to accomplish an analysis for the sustainable development through method that support to obtain data and interpretation of the results. Life Cycle Assessment c
Publicado em: 2007
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20. Algoritmos para problemas de empacotamento / Algorithms for packing problems
In this work we study several packing problems that are NP-hard. If we consider that P ? NP, we know that there are no efficient (polynomial time complexity) exact algorithms to solve these problems. One way to deal with these kind of problems is to use approximation algorithms, that are efficient algorithms that produce solutions with quality guarantee. We
Publicado em: 2006
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21. Three-dimensional cutting and packing problems and integration with vehicle routing / Problemas de corte e empacotamento tridimensional e integração com roteamento de veiculos
The wide-scale adoption of the containers made the development of the multimodal transport possible. Nowadays, shipment of boxes in containers is an important activity for companies that have in the load transport a logistic factor of high cost. This work presents the development and the application of metaheuristics with adaptive memory in order to solve th
Publicado em: 2006
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22. Secagem, armazenamento e qualidade de folhas de Cymbopogon citratus (D.C.) Stapf / Drying, storage and quality of Cymbopogon citratus (D.C.) Stapf leaves
The marketing of the medicinal plants is among a very competitive market. In Brazil, in spite of the effective legislation, the plant medicine it is still marketed under uncertain way due to the inefficiency in quality control mainly in the post harvest stage of the plants which serve as the raw materials for the medicines. The Cymbopogon citratus (D.C.) Sta
Publicado em: 2006
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23. Qualidade de goiabas ensacadas e manejadas com diferentes produtos fitossanitários, sob manejo orgânico / Quality of guava packed and managed using different phytosanitary products under organic management
Guava fruit culture presents serious phytosanitary problems usually controlled by the intensive use of chemicals, many of which have not been approved for this purpose. The growing and indiscriminate use of agro chemicals has put the health of consumers and farmers at risk, besides causing serious environmental problems. Faced by these facts, consumers have
Publicado em: 2006
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24. Estabilidade oxidativa de óleo de peixe encapsulado e acondicionado em diferentes tipos de embalagem em condição ambiente. / Oxidative stability of encapsulated fish oil stored in different types of packing under ambient conditions.
Due to the presence of long chained omega three fatty acids, fish oils have gathered much interest recently. Fish oils are a rich source of polyunsaturated fatty acids (PUFA) like eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which reduce blood triacylglycerol and cholesterol levels. However, the higher the unsaturation level, the less stable i
Publicado em: 2005