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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

Methodologies for reducing truck turn time at marine container terminals

Huynh, Nathan Nhan 28 August 2008 (has links)
Not available / text
52

Ethernet Packet Filtering for FTI - Part II

Holmeide, Ø, Gauvin, J-F. 10 1900 (has links)
ITC/USA 2014 Conference Proceedings / The Fiftieth Annual International Telemetering Conference and Technical Exhibition / October 20-23, 2014 / Town and Country Resort & Convention Center, San Diego, CA / Network loads close to Ethernet wire speed and latency sensitive data in a Flight Test Instrumentation (FTI) system, represent challenging requirements for FTI network equipment. Loss of data due to network congestion, overflow on the end nodes, as well as packet latency above a few hundred microseconds, can be critical during a flight test. To avoid these problems, several advanced packet filtering and network optimization functions are required in order to achieve best possible performance and thus avoid loss of data. This paper gives insight into how to properly engineer an Ethernet based FTI network and how to use advanced Ethernet switch techniques such as Quality of Service (QoS) and rate shaping.
53

The economic efficiency of allowing longer combination vehicles in Texas

Bienkowski, Bridget Nicole 07 July 2011 (has links)
This paper shows the economic efficiency of allowing longer combination vehicles in Texas. First, an overview of the truck size and weight policies is explained, with an emphasis on those that affect Texas. Next, LCV operations in other countries are described. Then, an LCV scenario for Texas is chosen, with specific routes and vehicle types. Operational costs for these vehicles are calculated on a cost per mile and cost per ton (or cubic yard) mile. The LCV scenario and the current truck base case are analyzed to estimate the number of truck trips, the number of mile, and the cost per mile for the chosen routes. These are then compared to estimate the change if LCVs were allowed in Texas. / text
54

The death of the big rig cowboy culture / Title of accompanying DVD: Truckin' : the death of the big rig cowboy culture

Belsaas, Matthew W. January 2007 (has links)
This creative project documents the effects of deregulation on the trucking industry. Through the use of DVD, the viewer learns all about the culture of trucking and the way it has changed in the past 30 years since deregulation. In August of 2006, I logged over 4,000 miles speaking with four different drivers. The result is a DVD consisting of a documentary, video short stories, photo journals, audio recordings and a flash card game, teaching the viewer about the trucking culture. / Department of Telecommunications
55

An analytic framework for the prediction of health impacts from diesel freight emissions, with case study /

Murphy, Colin. January 2008 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2008. / Typescript. Includes bibliographical references (leaves 68-73).
56

Profiling best practices an explanatory analysis of box-plant trucking logistics in the paper industry /

Madariaga, Jessica Frances. January 2004 (has links) (PDF)
Thesis (M.S.)--School of Economics, Georgia Institute of Technology, 2005. Directed by Patrick McCarthy. / Patrick McCarthy, Committee Chair ; Dr. Haizheng Li, Committee Member. Includes bibliographical references.
57

Modeling transnational surface freight flow and border crossing improvement

Matisziw, Timothy C. January 2005 (has links)
Thesis (Ph. D.)--Ohio State University, 2005. / Title from first page of PDF file. Document formatted into pages; contains xiii, 196 p.; also includes graphics, maps (some col.) Includes bibliographical references (p. 187-196). Available online via OhioLINK's ETD Center
58

The effects of technologies on commercial vehicle company safety and service a supply chain perspective /

Lantz, Brenda Michelle. January 1900 (has links) (PDF)
Thesis (Ph. D.)--Pennsylvania State University, 2006. / "December 2006." Includes bibliographical references (p. 51-54). Also available online.
59

Rural occupational transitions: transportation, identity, and new geographies

Ray, Dusty January 1900 (has links)
Master of Arts / Department of Sociology, Anthropology, and Social Work / Laszlo Kulcsar / Commercial trucking by its nature is a transient occupation, and those involved with commercial trucking can find themselves on the road and away from their homes for extended periods of time. Given the occupation’s transitory nature, why have some commercial drivers chosen to call rural America home when any place near a highway should suffice? Through the use of semi-structured interviews, this thesis attempts to explore whether rural truck drivers have any historical or geographical ties to the rural areas that they have chosen to live in. Using qualitative interview approach this thesis endeavored to find whether there are connections to the loss of agricultural or rural manufacturing jobs in a rural driver’s community and their decision to enter the occupation of trucking. In this way this thesis has attempted to discern to what extent structural changes in the rural economy over the last 40 years, may have played a role in a person’s decision to enter the occupation of trucking. This thesis has also attempted to elicit a phenomenological understanding of how they rural truck drivers understand themselves in relation to the larger American society through the work they perform.
60

Uma solução computacional para otimização do problema de roteamento de veículos com coletas e entregas simultâneas e janelas de tempo em uma transportadora rodoviária de cargas

Pessuto, Cleber Edgar 23 May 2018 (has links)
De acordo com a Confederação Nacional do Transporte (CNT), o modal rodoviário representa o meio pelo qual aproximadamente 60% das cargas são transportadas no Brasil, configurando desta forma a maior representatividade entre os modais existentes. No ramo de transporte rodoviário, empresas transportadoras de carga exercem papel decisivo na movimentação de mercadorias em cadeias produtivas de diferentes segmentos da economia. Para atender às exigências de qualidade e excelência operacional, as transportadoras devem planejar suas rotas interligando seus depósitos aos clientes de maneira eficiente e econômica, atendendo à demanda, respeitando a capacidade dos veículos, a sequência de coleta e entrega e as janelas de visitas. O planejamento de rotas é conhecido na literatura como o problema de roteamento de veículos (PRV). Considerado um problema da classe NPDifícil, não se conhece algoritmo computacionalmente eficiente para sua resolução, especialmente quando avaliadas situações práticas reais. Neste sentido, este trabalho propõe a construção de uma ferramenta (software), denominada de Roteirizador, baseado em um algoritmo metaheurístico híbrido (AH). Formado pela combinação das metaheurísticas Busca Tabu (BT) e Algoritmo Genético (AG), o AH permite combinar as melhores características de ambas as técnicas, fornecendo resultados superiores quando comparados à aplicação de cada técnica individualmente. Deste modo, o Roteirizador, inserido no ambiente computacional de uma transportadora rodoviária de cargas, busca melhorar a eficiência do planejamento de rotas. O AH apresentou em 50% dos experimentos, resultados superiores ou muito próximos dos valores ótimos apresentados pela literatura, e nos experimentos executados em uma unidade da Transportadora, todos os cenários apresentaram ganho em relação ao processo atualmente executado. O Roteirizador, baseado no AH, apresentou a possibilidade de economizar um montante superior a R$ 500 mil ao ano, unicamente com a redução da distância percorrida pelos veículos. Além do ganho em distância, o correto dimensionamento da jornada de trabalho das tripulações eliminou a necessidade de gastos relacionados ao pagamento de horas extras. Por fim, cabe ainda a possibilidade de um ganho superior tanto em distância quanto no número de veículos empregados caso a Transportadora revise a sua política de agrupamento de clientes por regiões / According to the National Transport Confederation (CNT), the road transport system represents the means by which approximately 60% of the cargo is transported in Brazil, thus making it more representative of existing modes. In the field of road transport, freight carriers play a decisive role in the movement of goods in productive chains of different segments of the economy. To meet the requirements of quality and operational excellence, such as carriers to plan their routes interconnecting their warehouses to customers of efficient and economical efficiency, meeting the demand, respecting a transport capacity, collection and delivery sequence and windows of visits. Scale planning is called in the literature as the vehicle routing problem (PRV). Considered an NP-Hard class problem, it is not known computationally efficient algorithm for its resolution, especially when evaluating real practical situations. In this sense, this work proposes the construction of a tool (software), called Roteirizador, based on a hybrid metaheuristic algorithm (AH). Formed by the combination of Tabu Search (TB) and Genetic Algorithm metaheuristics (AG), AH allows to combine the best characteristics of both techniques, providing superior results when compared to the application of each technique individually. In this way, the Roteirizador, inserted in the computational environment of a road transport operator of loads, looks for to improve the efficiency of the planning of routes. The AH presented in 50% of the experiments, results superior or very close to the optimal values presented in the literature, and in the experiments performed in an unit of the Carrier, all the scenarios presented a gain in relation to the currently executed process. The Roteirizador, based on the AH, presented the possibility of saving an amount of more than R$ 500,000 per year, solely by reducing the distance traveled by vehicles. In addition to the distance gain, the correct sizing of crew work hours eliminated the need for expenses related to the payment of overtime. Finally, there is also the possibility of a higher gain both in distance and in the number of vehicles used if Carrier reviews its policy of grouping customers by regions.

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