Optimal Transportation
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. Optimal hydrated lime concentration in asphalt binder to improve photo degradation resistance
Abstract The effect of short-term oxidation, evaluated by using a Rolling Thin Film Oven Test, and the effect of weathering aging on the oxidation process of hydrated lime modified asphalts were studied. Hydrated lime (HL) has been known as an additive for asphalt mixtures and is now considered as a binder additive that increases asphalt mixture durability.
REM, Int. Eng. J.. Publicado em: 2018-04
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2. Evolution of TiO2 Nanotubular Morphology Obtained in Ethylene Glycol/Glycerol Mixture and its Photoelectrochemical Performance
The evolution of TiO2 nanotubular morphology, synthesized in a mixture of fluorinated ethylene glycol and glycerol electrolyte, was studied as a function of the anodization time. The samples were characterized by FEG-SEM, XRD, XPS, UV-Vis and EIS. The formation of single-or double-walled TiO2 nanotube structure can be efficiently controlled by the anodizatio
Mat. Res.. Publicado em: 18/05/2017
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3. MODELS AND METHODS FOR LOGISTICS HUB LOCATION: A REVIEW TOWARDS TRANSPORTATION NETWORKS DESIGN
ABSTRACT Logistics hubs affect the distribution patterns in transportation networks since they are flow-concentrating structures. Indeed, the efficient moving of goods throughout supply chains depends on the design of such networks. This paper presents a literature review on the logistics hub location problem, providing an outline of modeling approaches, sol
Pesqui. Oper.. Publicado em: 2016-08
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4. A system dynamics approach to logistics outsourcing policies and decisions
Abstract This paper is based on a revelatory single-case study that uses a system dynamics model to analyze the costs and policies of a distribution logistics outsourcing process (i.e., the warehousing and transportation activities) of a Brazilian consumer packaged goods (CPG) company. The model considers the costs before and after the outsourced operation s
Prod.. Publicado em: 27/11/2015
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5. Economic valuation of a toll road concession with traffic guarantees and the abandonment option
Abstract Governments worldwide have been encouraging private participation in transportation infrastructure. To increase the feasibility of a project, public-private partnership (PPP) may include guarantees or other support to reduce the risks for private investors. It is necessary to value these opportunities under a real options framework and thereby analy
Prod.. Publicado em: 10/11/2015
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6. Hub location under hub congestion and demand uncertainty: the Brazilian case study
In this work, a mixed integer nonlinear programming model combining direct service links, demand uncertainty and congestion effects is proposed. This model is efficiently solved by Generalized Benders Decomposition, for instances of moderate sizes and reasonable number of scenarios. The deployed algorithms are further used for re-designing the Brazilian air
Pesquisa Operacional. Publicado em: 2011-08
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7. O teorema da dualidade de Kantorovich para o transporte de ótimo
Abordaremos a teoria do transporte otimo demonstrando o teorema da dualidade de Kantorovich para uma classe ampla de funções custo. Tal resultado desempenha um papel de suma importância na teoria do transporte otimo. Uma ferramenta importante utilizada e o teorema da dualidade de Fenchel-Rockafellar, aqui enunciado e demonstrado em bastante generalidade.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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8. Modelo locacional dinâmico para a cadeia agroindustrial da carne bovina brasileira / Dynamic locational model applied to the Brazilian beef supply chain
The theoretical framework of the Location Theory supports the dynamic optimization mathematical model developed in order to determine the potential sites for the installation of exporter slaughterhouses in Brazil, minimizing the costs associated with transportation and the costs associated with the installation of new slaughter industrial units, thereby incr
Publicado em: 2010
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9. The Monge-Kantorovich problem related to two probability measures on a finite set / O problema de Monge-Kantorovich para duas medidas de probabilidade sobre um conjunto finito
Apresentamos o problema do transporte ótimo de Monge-Kantorovich com duas medidas de probabilidade conhecidas e que possuem suporte em um conjunto de cardinalidade finita. O objetivo é determinar condições que permitam construir um acoplamento destas medidas que minimiza o valor esperado de uma função de custo conhecida e que assume valor nulo apenas n
Publicado em: 2009
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10. Metodologia para planejamento da colheita e transporte florestal utilizando geotecnologia e pesquisa operacional / Methodology for planning forest harvesting and transport using geotechnology and operations research.
Considering the current scenario in which the use of forest resources is growing quickly, it is necessary the use of techniques and tools to facilitate the short, medium and long run planning, thus facilitating the search for a more rational use of these precious resources, assisting and supporting the decision making. This study aimed to use the geographic
Publicado em: 2009
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11. A relação entre as infraestruturas produtivas e o produto interno bruto (PIB) das regiões brasileiras: uma análise por envoltória de dados / The relationship between productive infrastructure and gross domestic product (GDP) of brazilian regions: a data envelopment analysis
The current context of open markets requires and, at the same time, provides many changes to the business world. Also relevant is the stance of the State before the global scenario. The opening of markets has required and requires a new attitude of the State, either as a mere regulator or as an interventionist. There are specific areas where, due to particul
Publicado em: 2009
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12. A contribution to the study of linear programming / Uma contribuiÃÃo ao estudo da programaÃÃo linear
The Linear Programming is quite useful to obtain optimal solutions for problems related to several areas of science, such as, industrial engineering, food industry, health science, mining, transport, among others. This work makes a review about linear programming, producing a didactic-scientific text that presents a consistent theoretical base of the main co
Publicado em: 2008