Дисертації з теми "Rail transportation and freight services"
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Woodburn, Allan G. "The role of logistical structure in the development of rail freight services in Great Britain." Thesis, Edinburgh Napier University, 2000. http://researchrepository.napier.ac.uk/Output/4875.
Повний текст джерелаFeng, Yazhe. "Distribution Planning for Rail and Truck Freight Transportation Systems." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/77140.
Повний текст джерелаPh. D.
Bonsra, Kunal (Kunal Baldev), and Joseph Harbolovic. "Estimation of run times in a freight rail transportation network." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/77458.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 49-51).
The objective of this thesis is to improve the accuracy of individual freight train run time predictions defined as the time between departure from an origin node to arrival at a destination node not including yard time. A correlation analysis is conducted to identify explanatory variables that capture predictable sources of delay and influence run times for use in a regression model. A regression model is proposed utilizing the following explanatory variables: rolling historical average, congestion window, meets, passes, overtakes, direction, arrival headway, and departure headway to predict train run times. The performance of the proposed regression model is compared against a baseline simple historical averaging technique for a two year period of actual train operational data. The proposed regression model, though subject to specific limitations, offers substantial improvements in accuracy over the baseline technique and is recommended as justifying further exploration by the railroad to ultimately enable more accurate train schedules with subsequent improvements in railroad capacity, customer service, and asset utilization.
by Kunal Bonsra and Joseph Harbolovic.
M.Eng.in Logistics
Brand, Richard Riese. "An evaluation of the carrier selection process for freight transportation services." Connect to resource, 1986. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1271853237.
Повний текст джерелаNdembe, Elvis Mokake. "Derived Demand for Grain Freight Transportation, Rail-Truck Competition, and Mode Choice and Allocative Efficiency." Diss., North Dakota State University, 2016. https://hdl.handle.net/10365/28040.
Повний текст джерелаUpper Great Plains Transportation Institute (UGPTI)
Upper Great Plains Transportation Institute (UGPTI)
Sigut, Julius. "Road-rail intermodal terminals : modelling of operating performance." Thesis, Queensland University of Technology, 1995. https://eprints.qut.edu.au/36239/1/...%2036239_Sigut_1995.pdf.
Повний текст джерелаGuerrero, Rosero Esteban. "Improved Selection Support of Transport Services in Intermodal Transportation." Thesis, Malmö högskola, Fakulteten för teknik och samhälle (TS), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20471.
Повний текст джерелаTse, Yu-yuk. "A study of public passenger transport integration : with special reference to rail services /." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25263080.
Повний текст джерелаMahapatra, Subrat. "Analysis of routing strategies in air transportation networks for express package delivery services." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2688.
Повний текст джерелаThesis research directed by: Civil Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Jindrová, Veronika. "Analýza nákladní železniční dopravy v Evropě." Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-263835.
Повний текст джерелаTse, Yu-yuk, and 謝如玉. "A study of public passenger transport integration: with special reference to rail services." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31945764.
Повний текст джерелаWästerlund, Elin, and Emine Zehra Yurtkulu. "Investigation of risks and value with services used by transporters : A case study within the road freight transportation industry." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Företagsekonomi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-18279.
Повний текст джерелаScaglioni, Maria Martha. "The Development of Brazilian Railroads: How the Brazilian Economy can Benefit from More Efficient Railroad Utilization." Ohio : Ohio University, 2009. http://www.ohiolink.edu/etd/view.cgi?ohiou1244508600.
Повний текст джерелаVinje, Daniel Martin 1959. "The Effects of Deregulation on Rail Rates: A Study on Wheat, Barley, Corn, Oat, and Soybean." Thesis, North Dakota State University, 2006. https://hdl.handle.net/10365/29868.
Повний текст джерелаJoubert, Johannes Wilhelm. "An integrated and intelligent metaheuristic for constrained vehicle routing." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-07202007-175138.
Повний текст джерелаMarvin, Christopher E. "802.16 OFDM rapidly deployed network for near-real-time collaboration of expert services in maritime security operations." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Sep%5FMarvin.pdf.
Повний текст джерелаThesis Advisor(s): Alex Bordetsky. Includes bibliographical references (p.65-66). Also available online.
Lyu, Ke. "Studies on Auction Mechanism and Bid Generation in the Procurement of Truckload Transportation Services." Thesis, Troyes, 2021. http://www.theses.fr/2021TROY0032.
Повний текст джерелаTruckload transportation is a common mode of freight transportation, which accounts for a substantial portion of transportation industry, where shippers procure transportation services from carriers. Transportation service procurement is often realized by auction. Through designing effective auction mechanisms and efficient methods for solving related bid generation problems, shippers and carriers can save costs and increase profits respectively. This thesis studies three problems raised in the procurement of truckload transportation services realized by combinatorial auctions. Firstly, two two-phase combinatorial auction mechanisms are designed with supplementary bundles of requests offered for bid generated by the auctioneer and the carriers respectively in the second phase. Secondly, a column generation algorithm is proposed to solve the bid generation problem appeared in the combinatorial auction. Finally, the bid generation problem is extended to one that considers both multiple periods and uncertainty in truckload transportation service procurement. This stochastic optimization problem is formulated through scenario optimization and deterministic equivalence. To solve this model, a Benders decomposition approach is proposed
Bosch, Colin. "An evaluation of the quality of customer service delivery offered by the East London public transport commuter rail service provider (operated by Metrorail)." Thesis, Rhodes University, 2009. http://hdl.handle.net/10962/d1003865.
Повний текст джерелаPrůchová, Nikola. "Uplatnění mezinárodní silniční přepravy v rámci aktivit zasílatelské firmy Transforwarding a.s." Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-162178.
Повний текст джерелаКириленко, А. В. "Удосконалення діяльності з міжнародного транспортування та експедирування вантажів (на прикладі ТОВ «ВАНВЕЙЛ»)". Thesis, Одеський національний економічний університет, 2020. http://dspace.oneu.edu.ua/jspui/handle/123456789/12680.
Повний текст джерелаThe master's qualification work consists of three sections. The object of the study is the activity of international transportation and forwarding of goods and the process of its improvement. The paper considers the theoretical aspects of the activities of international transportation and forwarding of goods, determines the impact of internal and external environment on the activities of international transportation and forwarding of goods and methods of its evaluation. The activity of international transportation and forwarding of goods of LLC "VANVEIL" is analyzed, the analysis of the influence of the factors promoting and interfering with realization of transport and forwarding activity is carried out. The directions of improvement of activity on the international transportation and forwarding of cargoes of LLC "VANVEIL" at the expense of organizational measures and technologies of transport and forwarding activity are offered.
Бура, А. П. "Формування маркетингової стратегії реалізації послуг з вантажних перевезень (на матеріалах ФОП Кулик Д.О.)". Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/25177.
Повний текст джерелаваліфікаційна робота присвячена обґрунтуванню маркетингової стратегії для сфери вантажних перевезень. Перший розділ роботи містить характеристику маркетингу сфери послуг, особливості застосовування інструментів маркетингу в даній сфері. Другий розділ містить аналіз діяльності підприємства сфери мікробізнесу ФОП Кулик Д.О. Оцінені особливості маркетингу сфери вантажних перевезень. У третьому розділі вноситься ряд пропозицій щодо вдосконалення процесу формування стратегії маркетингу для представників мікробізнесу. Висновки відбивають основні результати проведення дослідження та пропозиції щодо вдосконалення роботи підприємства в сфері вантажних перевезень.
Qualification work is devoted to substantiation of marketing strategy for the sphere of freight transportation. The first section of the work contains a description of marketing in the service sector, especially the use of marketing tools in this area. The second section contains an analysis of the activities of the enterprise in the field of microbusiness FOP Kulik D.O. The peculiarities of freight marketing are evaluated. In the third section, a number of proposals are made to improve the process of forming a marketing strategy for microbusiness representatives. The conclusions reflect the main results of the study and proposals for improving the company's work in the field of freight.
Morin, Marie-Hélène. "Modélisation et décomposition des problèmes de transbordement dynamiques : application à la répartition des wagons Fret-SNCF." Université Joseph Fourier (Grenoble), 1993. http://tel.archives-ouvertes.fr/tel-00343876.
Повний текст джерелаZaoralová, Lenka. "City logistika a problémy velkých aglomerací - New York City." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-4572.
Повний текст джерелаPopďakunik, Lukáš. "City logistika Pardubicko-Hradeckého regionu." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-10841.
Повний текст джерелаБрайковська, Анна Миколаївна, Анна Николаевна Брайковская та Anna M. Braykovska. "Забезпечення конкурентоспроможності операторських компаній на ринку залізнично-морських вантажних перевезень". Thesis, Редакційно-видавничий відділ Державного економіко-технологічного університету транспорту, 2014. http://eadnurt.diit.edu.ua:82/jspui/handle/123456789/2269.
Повний текст джерелаUK: АНОТАЦІЯ В дисертаційній роботі обґрунтувано концептуальні основи формування стратегії забезпечення конкурентоспроможності операторських компаній на міжнародному ринку залізнично-морських вантажних перевезень за рахунок організації перевезень на мультимодальних умовах, упровадження бенчмаркінгу та вдосконалення логістично-маркетингової діяльності відповідно до ланцюга цінності, що забезпечує формування сталих конкурентних переваг, у тому числі бренду підприємства. Здійснений аналіз підходів до визначення змішаних вантажних перевезень і систематизувана їхня базова класифікація. Розвинено методичні підходи до здійснення бенчмаркінгу у сфері організації вантажних перевезень у змішаному сполученні шляхом виявлення ключових індикаторів успіху та основних показників якості змішаних перевезень і напрямів для оцінки оптимальності ланцюга змішаного перевезення. Удосконалені підходи логістично-маркетингової діяльності до вибору оптимальної лінії змішаних вантажних перевезень і визначення конкурентоспроможної наскрізної тарифної ставки. Обґрунтувані підходи до оцінювання економічної ефективності при забезпеченні конкурентоспроможності операторських компаній та доцільності здійснення перевезення вантажу на мультимодальних умовах.
RU: АННОТАЦИЯ В диссертационной работе впервые обоснованы концептуальные основы формирования стратегии обеспечения конкурентоспособности операторских компаний на международном рынке железнодорожно-морских грузовых перевозок за счет организации перевозок на мультимодальных условиях, внедрения бенчмаркинга и совершенствования логистически-маркетинговой деятельности в соответствии с цепочкой ценности, тем самым обеспечивая формирование устойчивых конкурентных преимуществ, в частности, бренда предприятия. Выявлены различия в трактовке понятий: «смешанные перевозки», «мультимодальные», «интермодальные», «комбинированные» и предложена классификация смешанных перевозок путем разделения по организационно-правовым и технико-технологическим признакам. Приведена характеристика опыта в сфере транспортной политики и организации смешанных грузовых перевозок в Германии, Великой Британии, Швеции, России. Обосновано, что вертикально-интегрированная модель реструктуризации с ориентацией на мультимодальное развитие обеспечивает высокий уровень конкурентоспособности операторских компаний. Осуществлен анализ состояния и перспективы развития рынка железнодорожно-морских грузовых перевозок, а также потенциальной экономико-организационной и технико-технологической грузовой базы развития мультимодальных перевозок в Украине. Усовершенствованы методические подходы по применению бенчмаркинга как базиса обеспечения конкурентоспособности предприятия за счет исследования ожиданий стейкхолдеров операторских компаний и дальнейшего ситуативно-временного формирования системы ключевых индикаторов успеха и показателей эффективности смешанной перевозки груза. Предложено решение задачи оптимизации схем железнодорожно-водных перевозок грузов согласно критерию минимальных затрат, соответствующих требованиям товарного рынка потребителя (грузополучателя) и рынка транспортных услуг путем экономико-математического моделирования с учетом технико-технологических особенностей использования инфраструктуры и загрузочных средств, а также права собственности на загрузочные транспортные средства. Расчет конкурентоспособной сквозной тарифной ставки предложено осуществлять путем последовательного анализа вариантов с учетом оптимального выбора схемы перевозки груза и прогнозов фрахтового рынка. Определены подходы к оценке экономической эффективности процесса обеспечения конкурентоспособности операторских компаний, в частности за счет внедрения сбалансированной системы показателей. Обоснован подход к оценке эффективности смешанной перевозки грузов на мультимодальных условиях, основанный на учете изменения скорости, себестоимости и доходной части.
EN: ANNOTATION The thesis is devoted to the theoretical grounding, methodical approaches and strategy to ensuring the operator’s competitiveness on the international market of freight. Approaches to the definition of multimodal transport have been analyzed and the basic classification of mixed freight has been systematized. Analysis of the status and trends of the rail market – maritime has been done and appropriateness of mixed traffic on multimodal conditions are justified. The benchmarking mechanism in the organization of mixed freight have been developed by identifying the key indicators of success and main indexes of quality of multimodal transport and directions for evaluating the optimality of the multimodal transport chain. Approaches logistics and marketing activities to the choice of the optimal line of mixed freight and identify competitive through tariff rates have been improved. Approaches to assessing the economic efficiency of the activities in order to ensure the competitiveness of the operator and base of a balanced scorecard have been proposed. The thesis contains approach to evaluating the effectiveness of a mixed freight on multimodal conditions, based on the account of change of speed, cost and revenue sides.
Державний економіко-технологічний університет транспорту, м. Київ
Nefzger, Matthias. "Design and development of a low-cost smartphone-based research platform for real-world driving studies." Thesis, Ludwig-Maximilians University of Munich (LMU), 2017. https://eprints.qut.edu.au/104238/1/MSc%20Thesis%20Matthias%20Nefzger.pdf.
Повний текст джерелаZhu, Endong. "Scheduled service network design for integrated planning of rail freight transportation." Thèse, 2010. http://hdl.handle.net/1866/4853.
Повний текст джерелаThis thesis studies a scheduled service network design problem for rail freight transportation planning. Rails follow a special two level consolidation organization, and the car-to-block, block-to-service handling procedure complicates daily operations. In this research, the two consolidation processes as well as the operation schedule are considered simultaneously, and by solving this problem, we provide an overall cost-effective operating plan, including blocking policy, train routing, scheduling, make-up policy and traffic distribution. In order to describe various rail operations at the tactical level, we extend the physical network and construct a 3-layer time-space structure, in which the time dimension takes into consideration the temporal impacts on operations. Furthermore, operations on trains, blocks, and cars are described in different layers. Based on this network structure, we model the rail planning problem to a service network design formulation. The proposed model relies on a complex mixed-integer programming formulation. The problem is very hard to solve due to the computational difficulty as well as the tremendous size of the application instances. Three versions of the problem are studied, which are the simplified model (with only non-stop services), complete model (with both non-stop and multi-stop services) and very-large-scale complete model. Heuristic algorithms are developed to provide good feasible solutions in reasonable computing efforts. A special case with non-stop services is first studied. According to a specific characteristic of the direct service network design problem, we develop a tabu search algorithm. The tabu search moves in a cycle-based neighborhood, where flows on blocks are re-distributed according to the cycles in a conceptual residual network. A slope scaling based algorithm is developed for the complete model, and we propose a new method, called ellipsoidal search, to further improve the solution quality. Ellipsoidal search combines the good feasible solutions generated from the slope scaling, and collects the features of good solutions into an elite problem, and solves it with exact solvers. The algorithm thus takes advantage of the convergence speed of slope scaling and solution quality of ellipsoidal search, and is proven effective. The algorithm also presents an alternative for solving the simplified problem. Finally, we work on the very-large-size complete model. A hybrid heuristic is developed by integrating the ideas of previous research with column generation. We propose a new slope scaling scheme where, compared with the previous scheme, only approximate service costs instead of both service and block costs are considered. The new slope scaling scheme thus separates the block decisions and service decisions, and provide a natural decomposition of the problem. Experiments show the algorithm is good to solve real-life size instances.
Demars, Chelsea Elizabeth. "Freight rail public-private partnerships : how Texas may accommodate the future surge in growth." Thesis, 2008. http://hdl.handle.net/2152/22199.
Повний текст джерелаtext
Jyun-YuSyue and 薛峻宇. "A Study of the Cost and Carbon Emissions Efficiency of Rail Freight Transportation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/00187588976203666756.
Повний текст джерелаNobre, Miguel Simões Ferreira. "The role of short sea shipping and European rail corridors in intermodal freight transportation." Master's thesis, 2021. http://hdl.handle.net/10362/124662.
Повний текст джерелаEsta dissertação explora a possibilidade de combinar o transporte marítimo de curta distância com os corredores ferroviários da União Europeia e vias navegáveis para transportar mercadorias para regiões distantes da costa. As contribuições desta dissertação são a expansão de um modelo de rede e a introdução de novas cadeias de transporte em novas áreas. É efetuada uma revisão das políticas de transporte intermo-dal na União Europeia e dos modelos de custos de transporte e de tempo de trânsito nas cadeias de transporte intermodal. É desenvolvido um modelo baseado em rede de cadeias de transporte intermodal na fachada atlântica da Europa, incluindo diferentes combinações de modos de trans-porte (rodoviário, marítimo de curta distância, ferroviário e vias fluviais). Estes mode-los são aplicados à quantificação do custo total de transporte, tempo de trânsito e uma combinação de ambos utilizando o valor do tempo para a criação de um custo genera-lizado de transporte. São apresentados resultados para cadeias de transporte entre o Porto e Bragança e 75 regiões NUTS 2 (Nomenclatura de unidades territoriais para es-tatísticas) do norte da Europa. São identificadas as regiões para as quais as diferentes combinações intermodais são mais competitivas. São realizadas variações paramétri-cas de parâmetros críticos de transporte, permitindo a identificação de mudanças no escopo de regiões para as quais as diferentes combinações intermodais são mais com-petitivas. Os resultados obtidos pelo modelo identificam a competitividade das soluções intermodais utilizando os modos marítimo, ferroviário e fluvial no transporte de mer-cadorias. As soluções intermodais mostram-se lentas quando comparadas com o trans-porte rodoviário, mas competitivas em termos de custos para determinadas regiões.
Van, Jaarsveld Leani. "Road versus rail debate : logistics opportunity cost of using road transport in a mining company." Thesis, 2013. http://hdl.handle.net/10210/8523.
Повний текст джерелаTransport plays a pivotal role within the South African economy as it enables the country to achieve economic growth. The transport industry does not only facilitate the movement of freight and people, it also employs a great number of individuals and forms a major part of South Africa‟s GDP. The 8th Annual State of Logistics Survey for South Africa indicated that transport costs were accountable for 6.8 per cent of the country‟s GDP in 2010. The importance of the transport industry necessitates that the industry is operated efficiently and effectively. Transport mode choices are not only made based on transportation costs but various other factors are affecting how companies choose the mode of transport for their freight movement requirements. Other factors that are considered include transit time, reliability, accessibility, capability and security/safety. Opportunity costs should also be considered when choosing a mode of transport. There are various different types of opportunity costs that exist within the supply chain, these include the opportunity cost associated with poor service levels, the opportunity cost of returning a vehicle without a backhaul, opportunity costs due to delays, the opportunity cost of holding inventory and lost sales opportunity costs. As transportation costs are not the only factor that companies consider when making a modal choice decision, many companies within South Africa have been moving their goods off rail and onto road. This study highlights the importance of determining the impact that an inefficient mode of transport has on a company‟s transportation model and costs. The main focus of this study is to determine the logistics opportunity cost of using road transport within a mining company. A case study approach is followed as the study aims to present a complex problem experienced by one company to be analysed and presented in an easily understandable format. All the data and company information used within this study was supplied by company DKVL. Data was collected through unstructured personal interviews and specific questions were developed for each person interviewed. The data was triangulated and verified through the use of company DKVL‟s financial statements. From the results of this study, the logistics opportunity cost associated with the mode of transport is substantial. This necessitates the need for companies to revise their transport mode choice on a regular basis as it has a major impact not only on their transportation costs, but also on their inventory holding and carbon emissions. Based on the findings of this study, Transnet Freight Rail (TFR) should not only focus on expanding its existing capacity, it should also focus on improving its customer service delivery. By providing poor service delivery, companies will not shift their freight back onto rail and will rather choose to use road transport to receive the benefit of reliability and flexibility, even if it is a more expensive mode of transport. The knock-on effect of companies choosing to use road transport as opposed to rail transport is significant. The quality of South African roads will continue to deteriorate, companies will continue to pay more to maintain and repair their vehicles and the transport industry will continue to increasingly damage the environment through increased carbon emissions. The impact of not having reliable rail transport is increased logistics costs which have a significant impact on the South African economy.
Rocha, Judite dos Santos. "A feasibility assessment of Government's road-to-rail policy implementation : a freight logistics perspective." Diss., 2014. http://hdl.handle.net/10500/25116.
Повний текст джерелаGraduate School of Business Leadership (SBL)
M. B. A. (Business Leadership)
Train, Alexander R. "Short Line Railroads and Municipal Land Use Planning, Policy, and Regulation." 2015. https://scholarworks.umass.edu/masters_theses_2/211.
Повний текст джерела(5930417), Allen Xie. "ASSESSING AND IMPROVING INTER-RATER AND REFERENT-RATER AGREEMENT OF PILOT PERFORMANCE EVALUATION." Thesis, 2018.
Знайти повний текст джерела(6623699), Juan Carlos Orozco. "Analysis of Energy Efficiency in Truck-Drone “Last Mile” Delivery Systems." Thesis, 2019.
Знайти повний текст джерелаTruck-drone delivery systems have the potential to improve how the logistics industry approaches the “last mile problem”. For the purposes of this study, the “last mile” refers to the portion of the journey between the last transportation hub and the individual customer that will consume the product. Drones can deliver packages directly, without the need for an underlying transportation network but are limited by their range and payload capacity. Studies have developed multiple truck-drone configurations, each with different approaches to leverage the benefits and mitigate the limitations of drones. Existing research has also established the drone’s reduction to package delivery time over the traditional truck only model. Two key model factors that have not been considered in previous research are the distribution of package demand, and the distribution of package weight. This study analyzes the drone’s impact to the energy efficiency of a package delivery system, which has taken a backseat to minimizing delivery time. Demand distribution dictates the travel distances required for package delivery, as well as the proportion of delivery locations that are in range for drone delivery. Package weight determines the energy consumption of a delivery and further restricts the proportion of drone eligible packages. The major contributions of this study are the development of a truck-drone tandem mathematical model which minimizes energy consumption, the construction of a population-based package demand distribution, a realistic package weight distribution, and a genetic algorithm used to solve the mathematical model developed for problems that are too computationally expensive to be solved optimally using an exact method. Results show that drones can only have a significant impact to energy efficiency in package delivery systems if implemented under the right conditions. Using truck-drone tandem systems in areas with lower package demand density affords the drone the potential for larger energy savings as larger portions of the truck distance can be replaced. Further, the lower density translates to greater differences between the road-restricted driving distance and the flying distance between delivery points. Finally, energy savings are highly dependent on the underlying package weight distribution of the system. A heavier average package weight increases the energy consumption of the system, but more importantly the portion of packages above the drone’s payload capacity severely limit the savings afforded by the incorporation of drones.
Limoubpratum, Chattharn. "Factors Influencing Sustainable Distribution: a Framework of Co-opetition, Freight Consolidation, and Collaborative Freight Distribution in the Thailand’s Newspaper Industry." Thesis, 2015. https://vuir.vu.edu.au/28805/.
Повний текст джерелаFry, John. "Simulating Heavy Vehicles on Australian Rural Highways." 2005. http://arrow.unisa.edu.au:8081/1959.8/46681.
Повний текст джерелаGlanville, Louise. "Women going places : women and transport in a competitive environment." Thesis, 1996. https://vuir.vu.edu.au/17935/.
Повний текст джерела(6635894), Yue Gu. "Defining Airport Operational Sustainability for the U.S. General Aviation Airports." Thesis, 2019.
Знайти повний текст джерелаWhile the general public may be familiar with commercial airports, there are thousands of small General Aviation (GA) airports serving communities across the United States. Many of these airports are under pressure to survive and to bring in more revenue without impinging on the community and environment. Many organizations and governmental agencies such as the Federal Aviation Administration (FAA), now recognize the value of sustainable development and importance of operation to airport sustainability. Achieving operational sustainability is a means that may help airports on sustainable development and has positive impacts on airports’ economic viability, natural resource conservation, and social responsibility. However, airport operational sustainability is rarely defined in a consistent, measurable manner (Johnson & Gu, 2017).
This study explored the understanding of airport operational sustainability among five GA Regional and Local airports. Based on the findings, a new definition of airport operational sustainability for U.S Regional and Local GA airports was proposed. A set of performance metrics for airport operational sustainability was developed. The outcomes of the study may help airport shareholders contribute to airport sustainability planning through a better understanding of sustainability principles. A set of performance metrics for airport operational sustainability may be used to quantify the sustainability achievements of airports and help airports measure their performance.
(5930480), Wenbo Zhang. "MODELING EMERGING APP-BASED TAXI SERVICES: INTERACTIONS OF DEMAND AND SUPPLY." Thesis, 2019.
Знайти повний текст джерела(9745922), Cheng Wang. "Investigating the Threats of Unmanned Aircraft Systems (UAS) at Airports." Thesis, 2020.
Знайти повний текст джерела(5930372), Jian Wang. "System modeling for connected and autonomous vehicles." Thesis, 2019.
Знайти повний текст джерелаConnected and autonomous vehicle (CAV) technologies provide disruptive and transformational opportunities for innovations toward intelligent transportation systems. Compared with human driven vehicles (HDVs), the CAVs can reduce reaction time and human errors, increase traffic mobility and will be more knowledgeable due to vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication. CAVs’ potential to reduce traffic accidents, improve vehicular mobility and promote eco-driving is immense. However, the new characteristics and capabilities of CAVs will significantly transform the future of transportation, including the dissemination of traffic information, traffic flow dynamics and network equilibrium flow. This dissertation seeks to realize and enhance the application of CAVs by specifically advancing the research in three connected topics: (1) modeling and controlling information flow propagation within a V2V communication environment, (2) designing a real-time deployable cooperative control mechanism for CAV platoons, and (3) modeling network equilibrium flow with a mix of CAVs and HDVs.
Vehicular traffic congestion in a V2V communication environment can lead to congestion effects for information flow propagation due to full occupation of the communication channel. Such congestion effects can impact not only whether a specific information packet of interest is able to reach a desired location, but also the timeliness needed to influence traffic system performance. This dissertation begins with exploring spatiotemporal information flow propagation under information congestion effects, by introducing a two-layer macroscopic model and an information packet relay control strategy. The upper layer models the information dissemination in the information flow regime, and the lower layer model captures the impacts of traffic flow dynamics on information propagation. Analytical and numerical solutions of the information flow propagation wave (IFPW) speed are provided, and the density of informed vehicles is derived under different traffic conditions. Hence, the proposed model can be leveraged to develop a new generation of information dissemination strategies focused on enabling specific V2V information to reach specific locations at specific points in time.
In a V2V-based system, multiclass information (e.g., safety information, routing information, work zone information) needs to be disseminated simultaneously. The application needs of different classes of information related to vehicular reception ratio, the time delay and spatial coverage (i.e., distance it can be propagated) are different. To meet the application needs of multiclass information under different traffic and communication environments, a queuing strategy is proposed for each equipped vehicle to disseminate the received information. It enables control of multiclass information flow propagation through two parameters: 1) the number of communication servers and 2) the communication service rate. A two-layer model is derived to characterize the IFPW under the designed queuing strategy. Analytical and numerical solutions are derived to investigate the effects of the two control parameters on information propagation performance in different information classes.
Third, this dissertation also develops a real-time implementable cooperative control mechanism for CAV platoons. Recently, model predictive control (MPC)-based platooning strategies have been developed for CAVs to enhance traffic performance by enabling cooperation among vehicles in the platoon. However, they are not deployable in practice as they require anembedded optimal control problem to be solved instantaneously, with platoon size and prediction horizon duration compounding the intractability. Ignoring the computational requirements leads to control delays that can deteriorate platoon performance and cause collisions between vehicles. To address this critical gap, this dissertation first proposes an idealized MPC-based cooperative control strategy for CAV platooning based on the strong assumption that the problem can be solved instantaneously. It then develops a deployable model predictive control with first-order approximation (DMPC-FOA) that can accurately estimate the optimal control decisions of the idealized MPC strategy without entailing control delay. Application of the DMPC-FOA approach for a CAV platoon using real-world leading vehicle trajectory data shows that it can dampen the traffic oscillation effectively, and can lead to smooth deceleration and acceleration behavior of all following vehicles.
Finally, this dissertation also develops a multiclass traffic assignment model for mixed traffic flow of CAVs and HDVs. Due to the advantages of CAVs over HDVs, such as reduced value of time, enhanced quality of travel experience, and seamless situational awareness and connectivity, CAV users can differ in their route choice behavior compared to HDV users, leading to mixed traffic flows that can significantly deviate from the single-class HDV traffic pattern. However, due to a lack of quantitative models, there is limited knowledge on the evolution of mixed traffic flows in a traffic network. To partly bridge this gap, this dissertation proposes a multiclass traffic assignment model. The multiclass model captures the effect of knowledge level of traffic conditions on route choice of both CAVs and HDVs. In addition, it captures the characteristics of mixed traffic flow such as the difference in value of time between HDVs and CAVs and the asymmetry in their driving interactions, thereby enhancing behavioral realism in the modeling. New solution algorithms will be developed to solve the multiclass traffic assignment model. The study results can assist transportation decision-makers to design effective planning and operational strategies to leverage the advantages of CAVs and manage traffic congestion under mixed traffic flows.
This dissertation deepens our understanding of the characteristics and phenomena in domains of traffic information dissemination, traffic flow dynamics and network equilibrium flow in the age of connected and autonomous transportation. The findings of this dissertation can assist transportation managers in designing effective traffic operation and planning strategies to fully exploit the potential of CAVs to improve system performance related to traffic safety, mobility and energy consumption.
Ghosh, Madhubani. "Development and economic evaluation of strategies to reduce turnaround time at the Calcutta Haldia port complex : a simulation modeling approach." Thesis, 1998. https://vuir.vu.edu.au/15297/.
Повний текст джерелаSengpiehl, Carsten. "Towards the development of a holistic planning framework for a Logistics City-Cluster: a multinational modified Delphi study." Thesis, 2010. https://vuir.vu.edu.au/16357/.
Повний текст джерела(5930018), Wesley L. Major. "Analyzing the Commercial Air Travel Experience for Passengers with Disabilities." Thesis, 2019.
Знайти повний текст джерелаІльченко, Н. О. "Удосконалення транспортно-експедиторського обслуговування міжнародних контейнерних перевезень (на прикладі транспортно-експедиторської компанії ТОВ «ОЛЕНИЧ ГРУП ЛТД»)". Thesis, 2018. http://dspace.oneu.edu.ua/jspui/handle/123456789/8013.
Повний текст джерелаQualifying work for obtaining an educational master's degree in the specialty "International economic relations" according to the master's program of professional orientation "Foreign economic activity of enterprises (organizations)». Odessa National Economics University. – Odessa, 2018 The theoretical bases of transport-forwarding operations of foreign trade transportations, especially their essence, significance and features in the modern world are considered in the work. In addition, the methodology for assessing the efficiency of an enterprise in this sphere is being studied. An in-depth analysis of the transport and forwarding services of foreign economic operations was made using the example of the freight forwarding company LLC “OLENICH GROUP LLC”. The main features of this enterprise in the market are revealed, the analysis of the organization of cargo transportation by mixed modes of transport is carried out, and also the analysis of the financial and economic state of the enterprise is carried out. In this work was suggested a number of basic directions for improving transport and forwarding activities, and, as a result, the development of strategies to reduce the costs of organization of the enterprise in this industry.
Mantovani, Serena. "The load planning problem for double-stack intermodal trains." Thesis, 2020. http://hdl.handle.net/1866/24326.
Повний текст джерелаDouble-stack trains are an important component of the railroad transport network for containerized cargo in specific markets such as North America. The load planning problem embodies an operational problem commonly faced in rail terminals by operators. It consists in optimizing the assignment of containers to specific locations on the train. The work in this thesis is centered around a scientific paper on the optimization on load planning problem for double stack-trains, published in the European Journal of Operation Research (Volume 267, Issue 1, Pages 1-398) on 16 May 2018. In the paper, we formulated an ILP model and made a number of contributions. First, we proposed a general methodology that can deal with double- or single-stack railcars with arbitrary loading patterns. The patterns account for loading dependencies between the platforms on a given railcar. Second, we modeled Center of gravity (COG) restrictions, stacking rules and a number of technical loading restrictions associated with certain types of containers and/or goods. Results show that we can solve realistic size instances in reasonable time using a commercial ILP solver and we illustrate that failing to account for containers-to-cars matching as well as COG restrictions may lead to an overestimation of the available train capacity.
(9375209), Cristhian Lizarazo Jimenez. "IDENTIFICATION OF FAILURE-CAUSED TRAFFIC CONFLICTS IN TRACKING SYSTEMS: A GENERAL FRAMEWORK." Thesis, 2020.
Знайти повний текст джерелаTraffic conflicts are one of the most widely adopted surrogate measures of safety because they meet the following two conditions for crash surrogacy: (1) they are non-crash events that can be physically related in a predictable and reliable way to crashes, and (2) there is a potential for bridging crash frequency and severity with traffic conflicts. However, three primary issues were identified in the literature that need to be resolved for the practical application of conflicts: (1) the lack of consistency in the definition of traffic conflict, (2) the predictive validity from such events, and (3) the adequacy of traffic conflict observations.
Tarko (2018) developed a theoretical framework in response to the first two issues and defined traffic conflicts using counterfactual theory as events where the lack of timely responses from drivers or road users can produce crashes if there is no evasive action. The author further introduced a failure-based definition to emphasize conflicts as an undesirable condition that needs to be corrected to avoid a crash. In this case, the probability of a crash, given failure, depends on the response delay. The distribution of this delay is adjusted, and the probability is estimated using the fitted distribution. As this formal theory addresses the first two issues, a complete framework for the proper identification of conflicts needs to be investigated in line with the failure mechanism proposed in this theory.
The objective of this dissertation, in response to the third issue, is to provide a generalized framework for proper identification of traffic conflicts by considering the failure-based definition of traffic conflicts. The framework introduced in this dissertation is built upon an empirical evaluation of the methods applied to identify traffic conflicts from naturalistic driving studies and video-based tracking systems. This dissertation aimed to prove the practicality of the framework for proactive safety evaluation using emerging technologies from in-vehicle and roadside instrumentation.
Two conditions must be met to properly claim observed traffic events as traffic conflicts: (1) analysis of longitudinal and lateral acceleration profiles for identification of response due to failure and (2) estimation of the time-to-collision as the period between the end of the evasion and the hypothetical collision. Extrapolating user behavior in the counterfactual scenario of no evasion is applied for identifying the hypothetical collision point.
The results from the SHRP2 study were particularly encouraging, where the appropriate identification of traffic conflicts resulted in the estimation of an expected number of crashes similar to the number reported in the study. The results also met the theoretical postulates including stabilization of the estimated crashes at lower proximity values and Lomax-distributed response delays. In terms of area-wide tracking systems, the framework was successful in identifying and removing failure-free encounters from the In-Depth understanding of accident causation for Vulnerable road users (InDeV) program.
This dissertation also extended the application of traffic conflicts technique by considering estimation of the severity of a hypothetical crash given that a conflict occurs. This component is important in order for conflicts to resemble the practical applications of crashes, including the diagnostics of hazardous locations and evaluating the effectiveness of the countermeasures. Countermeasures should not only reduce the number of conflicts but also the risk of crash given the conflict. Severity analysis identifies the environmental, road, driver, and pre-crash conditions that increase the likelihood of severe impacts. Using dynamic characterization of crash events, this dissertation structured a probability model to evaluate crash reporting and its associated severity. Multinomial logistic models were applied in the estimation; and quasi-complete separation in logistic regression was addressed by providing a Bayesian estimation of these models.
(5930705), Theodora Konstantinou. "MARKET ADOPTION AND IMPACT OF ELECTRIC ROADWAYS ON CRITERIA POLLUTANTS AND GREENHOUSE GAS EMISSIONS." Thesis, 2019.
Знайти повний текст джерелаTraffic is inevitably a major source of air pollution, particularly in urban areas. Efforts are made towards reducing emissions by improving vehicle and fuel technology and promoting alternative, sustainable modes of transportation. Although the emergence of EVs has shown capabilities of decreasing energy use and emissions levels, the EV market is developing slowly mainly due to drivers’ range anxiety and charging time. Electric roadways (ERs) have been proposed as a solution to overcome the concerns related to EVs by converting road segments into powered lanes where vehicles can be charged as they move along the roadway. This technology has the potential to increase driving range, decrease battery size and thus, lower the weight and the cost of EVs. In this context, exploring the challenging concept of ERs comes natural.
Since data on the market acceptance and the environmental implications on this technology are limited to non-existent, this thesis has the following objectives: 1) identify the factors that affect the short- and long-term intention to use ERs, 2) estimate the level of adoption of the ER technology and identify characteristics of the market segments and 3) assess the impact of ERs on criteria pollutants and greenhouse gas emissions based on the market adoption results.
To achieve these objectives, a survey of the general population in Los Angeles, California was conducted, gathering 600 responses representative of gender and age in the area. Los Angeles is considered a leader in electro-mobility and thus, a natural choice for the implementation of ERs. The short-or long-term intentions to drive on ERs and purchase an EV knowing about the availability of ERs were found to be correlated and thus, were modeled simultaneously using a bivariate ordered probit model. The compatibility of the ER technology with respondents’ lifestyle and needs, respondents’ tendency towards using sustainable forms of transportation, respondents’ innovativeness and perceived environmental benefits were among the most significant variables found to affect the short-term and long-term intention to use ERs.
The level of adoption of the ER technology and corresponding market segments were identified using a combination of Principal Component Analysis (PCA) and Cluster Analysis. Three clusters emerged from the analysis: early adopters (48.5%), mid-adopters (27.67%) and late adopters (23.83%) that differed in terms of demographics and socioeconomic characteristics, travel and EV charging characteristics and level of awareness.
The adoption levels found were then used to estimate the emissions change due to the implementation of the ERs by 2050. Using the California Air Resources Board’s (CARB) 2017 EMissions FACtor model (EMFAC). Two scenarios were examined considering light-duty vehicles (LDVs) in a specific corridor: “with” and “without electrification” scenarios. The results suggested that the ER technology for light-duty vehicles has the potential to provide emission reductions of 4 to 24%. A sensitivity analysis was also conducted to examine the effect of speed on the results.
Turning to the practical implications, this thesis can provide a foundational framework for the evaluation of the ER technology in terms of environmental and economic viability and set the groundwork for future research. Ultimately, the short-term and long-term intention analysis can be used as a draft guide by state and local agencies and inform their strategic short- or long- range plans for mobility. By segmenting potential users, policy makers and transport operators can be informed about the main challenges regarding the promotion of the ER technology to distinct market segments and devise ways to accelerate its adoption. The findings from the impact analysis of ERs on criteria pollutants and greenhouse gases can also inform long-range transportation plans and existing regulations and policies in California and beyond.
Jogoo, Luchmun Shikha. "Competitiveness of domestic airlines in Australia: the effect of experience quality, brand image and perceived value on behavioural intentions." Thesis, 2018. https://vuir.vu.edu.au/37837/.
Повний текст джерела