- 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.
Search results
Showing 1 to 8 of 8 (0.052 seconds)Spelling suggestions: "subject:"passenger brain"" "subject:"passenger grain""
| 1 |
Roanoke Passenger Train Station: Framing IconsMitchell, Anne Walker 12 August 2010 (has links)
This thesis explores the framing of graphical qualities of the passenger train and the city of Roanoke, Virginia. A passenger train station frames these icons and brings people directly to the train. This framing creates a new icon for the city. An area on the train tracks is revitalized and creates a permeable threshold into and out of the city. / Master of Architecture
|
| 2 |
THE DEMISE OF THE LONE STAR RAIL DISTRICT: A CASE STUDY IN THE FAILURE TO EXPAND PASSENGER RAIL SERVICE IN TEXASAndrews, Jr., Robert C., 0000-0002-6058-8868 January 2022 (has links)
While passenger rail service has significantly grown in some parts of the United States, as evidenced by the new Brightline / Virgin Rail USA service in Florida and the expansion of passenger rail service in the State of Virginia, there has been significant resistance to the growth of passenger rail service in Texas, as evidenced by the demise of the Lone Star Rail District (LSRD) in 2016. Why the resistance? This exploratory research provides insights that address that question by identifying the contributing factors that led to the LSRD’s failure. A political economy framework incorporated a stakeholders’ perspective in an analysis of LSRD’s termination. An archival document study was used to identify key stakeholders and to then inform the design of, and the questions used in, an interview study of those key stakeholders. This research identified eight factors that contributed to the demise of the LSRD; 1) prior rail / transit failures in Texas; 2) structure of the Texas legislation; 3) inadequate political support; 4) organizational paralysis; 5) resistance from the Texas Department of Transportation; 6) flawed strategy; 7) disruptive technology; and 8) the Bexar County (Texas) Judge and the president of the Union Pacific Railroad. Although hundreds of individuals were involved during the LSRD’s nineteen-year history, in the end, three key decision makers and one key staff person were attributed with ending the organization’s existence. By identifying and analyzing the constellation of forces that were at play in the Lone Star Rail District, lessons were learned that could be applied (or avoided) across an array of similar rail initiatives, not only in Texas, but throughout the United States. A clear and identifiable political champion; adequate funding; competent project management; a clear project design and budget; a cooperating Class-1 freight railroad partner; adequate property ownership or right-of-way access; and an economically competitive alternative to automated highway vehicle technology; should all be considered necessary elements for the success of future passenger rail expansion projects. / Business Administration/Interdisciplinary
|
| 3 |
Influência do uso de trens de caixa móvel na implantação e operação de novas ferrovias. / Influence of the use of tilting trains on the implementation and operation of new railways.Lucas, Felipe Rabay 16 March 2015 (has links)
O presente trabalho tem por objetivo primário abordar os atuais conhecimentos sobre o transporte ferroviário interurbano e regional de passageiros, com foco na tecnologia dos trens de caixa móvel, também conhecidos como trens pendulares. Como objetivo secundário busca-se analisar a influência dos trens de caixa móvel ou pendulares na implantação e operação de novas ferrovias, com ênfase na adequação em fase de projeto, mostrando-se o potencial dessa tecnologia para o aumento da velocidade média e a redução dos tempos de viagem. São tratados os tópicos relevantes para o transporte ferroviário de passageiros, como o conforto do usuário, as especificações técnicas do material rodante e referências dos custos de implantação e operação envolvidos, mostrando-se também dentro de cada aspecto as diferenças dos trens pendulares em relação aos trens convencionais. Três estudos de caso elaborados terão como objetivo explicitar as interveniências da operação dos trens pendulares com o projeto ferroviário, em especial com o projeto geométrico, e através de simulações de marcha e comparações, mostrar de maneira prática o potencial do uso dos trens pendulares. Através do embasamento teórico e dos estudos de caso, é feita uma análise crítica de modo a possibilitar tanto um entendimento do transporte ferroviário de passageiros, quanto do material rodante de caixa móvel e suas possibilidades. Os resultados dos estudos de caso e a análise crítica mostram uma redução significativa dos tempos de viagem, entre 8,1 e 20,0%, mediante a operação de trens pendulares em substituição ao material rodante convencional. / As a primary objective, the present work aims to summarize the current knowledge on intercity and regional passenger railway transportation, focusing on tilting train technology, also known as car body tilt. As a secondary objective, the present work seeks to analyze the influence of tilting train technology on the design, implementation and operation of new railway corridors, with emphasis on design phase, showing the potential of this technology to increase speeds and reduce travel times. Railway passenger transportation issues, such as passenger comfort, rolling stock technical specifications and implementation and operational costs are addressed. Additionally, different aspects between conventional and tilting trains are also discussed. Three case studies help clarify the correlation between tilting train operation and railway design, especially the geometric design; further, with the help of speed simulations and comparisons, the potential use of tilting train operations are demonstrated. With the theoretical basis and the case studies, a critical analysis is made, allowing as a better understanding of railway passenger transportation with regards to the use of tilting rolling stock and its possibilities. The results of the case studies and the critical analysis present a considerable reduction in travel times, between 8,1 and 20,0%, with the operation of tilting trains in the place of the conventional rolling stock.
|
| 4 |
Influência do uso de trens de caixa móvel na implantação e operação de novas ferrovias. / Influence of the use of tilting trains on the implementation and operation of new railways.Felipe Rabay Lucas 16 March 2015 (has links)
O presente trabalho tem por objetivo primário abordar os atuais conhecimentos sobre o transporte ferroviário interurbano e regional de passageiros, com foco na tecnologia dos trens de caixa móvel, também conhecidos como trens pendulares. Como objetivo secundário busca-se analisar a influência dos trens de caixa móvel ou pendulares na implantação e operação de novas ferrovias, com ênfase na adequação em fase de projeto, mostrando-se o potencial dessa tecnologia para o aumento da velocidade média e a redução dos tempos de viagem. São tratados os tópicos relevantes para o transporte ferroviário de passageiros, como o conforto do usuário, as especificações técnicas do material rodante e referências dos custos de implantação e operação envolvidos, mostrando-se também dentro de cada aspecto as diferenças dos trens pendulares em relação aos trens convencionais. Três estudos de caso elaborados terão como objetivo explicitar as interveniências da operação dos trens pendulares com o projeto ferroviário, em especial com o projeto geométrico, e através de simulações de marcha e comparações, mostrar de maneira prática o potencial do uso dos trens pendulares. Através do embasamento teórico e dos estudos de caso, é feita uma análise crítica de modo a possibilitar tanto um entendimento do transporte ferroviário de passageiros, quanto do material rodante de caixa móvel e suas possibilidades. Os resultados dos estudos de caso e a análise crítica mostram uma redução significativa dos tempos de viagem, entre 8,1 e 20,0%, mediante a operação de trens pendulares em substituição ao material rodante convencional. / As a primary objective, the present work aims to summarize the current knowledge on intercity and regional passenger railway transportation, focusing on tilting train technology, also known as car body tilt. As a secondary objective, the present work seeks to analyze the influence of tilting train technology on the design, implementation and operation of new railway corridors, with emphasis on design phase, showing the potential of this technology to increase speeds and reduce travel times. Railway passenger transportation issues, such as passenger comfort, rolling stock technical specifications and implementation and operational costs are addressed. Additionally, different aspects between conventional and tilting trains are also discussed. Three case studies help clarify the correlation between tilting train operation and railway design, especially the geometric design; further, with the help of speed simulations and comparisons, the potential use of tilting train operations are demonstrated. With the theoretical basis and the case studies, a critical analysis is made, allowing as a better understanding of railway passenger transportation with regards to the use of tilting rolling stock and its possibilities. The results of the case studies and the critical analysis present a considerable reduction in travel times, between 8,1 and 20,0%, with the operation of tilting trains in the place of the conventional rolling stock.
|
| 5 |
Estrada de ferro Vitória a Minas: conversas de beira de linhaDelage, Raquel Gotardelo Audebert 01 February 2012 (has links)
Made available in DSpace on 2016-03-15T19:42:13Z (GMT). No. of bitstreams: 1
Raquel Gotardelo Audebert Delage.pdf: 3934601 bytes, checksum: 2a171c48c7c93c0b27dc505e39852be6 (MD5)
Previous issue date: 2012-02-01 / Fundo Mackenzie de Pesquisa / This work outlines the story of the Vitória-Minas Railway, told from different points of
view. Through ethnographic research, which has a qualitative character, the memory
of the railway is revealed by those who lived or still live near it. The acknowledgment
and valuing of experiences lived by men and women, related to the object of study,
made it possible for the researcher to preserve these memories and acquire new
details about the Vitória-Minas Railway story. Contributions by oral tradition,
individual and collective memory concepts have been considered under the light of
authors like Alessandro Portelli, Pierre Nora, Oswaldo Truzzi, Michael Pollak, Ecléa
Bosi among others. Although the main focus of this research is on life stories, and
how the railway story can be retold through them, images researched were also
explored as possible means of investigation. Authors like Barthes and Boris Kossoy
have helped in this process of understanding images as contents to be deciphered,
which led us to discuss some of the photos related to the railway and their
composition process. Through field research, people s voices could be recorded
giving them the opportunity of being heard. The speeches made it possible to
understand the changes brought by the railway not only to the small towns and cities
but also to those who have narrated their own life story and shared their memories. / Este trabalho traz a história da Estrada de Ferro Vitória a Minas sendo contada por
uma multiplicidade de pontos de vista. Por meio da pesquisa etnográfica, de caráter
qualitativo, revela-se a memória da ferrovia por parte daqueles que viveram/vivem
próximo a ela. O reconhecimento e a valorização de experiências vividas por
homens e mulheres em relação ao objeto possibilitaram que o trabalho preservasse
essas memórias, trazendo, com isso, novos registros sobre a história da ferrovia. As
contribuições oferecidas pela história oral e por conceitos de memória individual e
memória coletiva são discutidas com base em autores como Alessandro Portelli,
Pierre Nora, Oswaldo Truzzi, Michael Pollak, Ecléa Bosi, dentre outros. Apesar de a
proposta principal ser as histórias de vida e, através delas, a história da ferrovia
sendo recontada, buscou-se nas imagens pesquisadas uma possibilidade de
investigação. Autores como Roland Barthes e Boris Kossoy auxiliaram nesse
processo de entender as imagens como conteúdos a serem decifrados, o que levou
à discussão sobre algumas fotografias referentes à ferrovia e seu processo de
construção. Por meio da pesquisa de campo, foi possível registrar as vozes dos
entrevistados e, com isso, dar-lhes a oportunidade de serem ouvidos. As falas
possibilitaram compreender as mudanças trazidas pela ferrovia não apenas para as
cidades, como também para aqueles que narram sua própria história de vida e
compartilham suas memórias.
|
| 6 |
Ontologies et web sémantique pour une construction évolutive d'applications dédiées à la logistique / Ontologies and semantic web for an evolutive development of logistic applicationsHendi, Hayder 04 December 2017 (has links)
Le domaine de la logistique implique souvent la résolution de problèmes combinatoires complexes. Ces derniers font également implicitement référence à des processus, acteurs, activités et méthodes concernant divers aspects qu'il faut considérer. Ainsi, un même problème peut faire intervenir des processus de vente/achat, transport/livraison et gestion de stock. Ces processus sont tellement divers et interconnectés qu'il est difficile pour un logisticien de tous les maîtriser. Dans cette thèse, nous proposons l'explicitation, par le biais d'ontologies, de connaissances conceptuelles et sémantiques concernant les processus logistiques. Ces connaissances explicites sont alors mises à contribution pour construire un système à base de connaissances permettant de guider les logisticiens dans la construction, de façon incrémentale et semi-automatique, de solutions informatiques à un problème qui leur est posé à un moment donné. Nous mettons en oeuvre une ontologie concernant le domaine de la logistique connectée à une ontologie associée à la problématique de l'optimisation. Nous établissons ainsi un lien sémantique explicite entre le domaine de la logistique et celui de l'optimisation. Cela permet aux logisticiens d'identifier de façon précise et sans ambigüité le problème logistique auquel il est confronté et les problèmes d'optimisation associés. L'identification des problèmes conduit alors à un processus de choix des solutions allant du choix du processus logistique précis à mettre en oeuvre à celui de la méthode de résolution du problème combinatoire et cela jusqu'à la découverte du composant informatique à invoquer et qui est matérialisé par un service web. L'approche que nous avons adoptée et mise en oeuvre a été expérimentée avec les problèmes de routage de véhicules, le problème de transport ferroviaire de passagers et le problème de terminaux de conteneurs. / Logistics problems are often complex combinatorial problems. These may also implicitly refer to the processes, actors, activities, and methods concerning various aspects that need to be considered. Thus the same process may involve the processes of sale/purchase, transport/delivery, and stock management. These processes are so diverse and interconnected that it is difficult for a logistic expert to compete all of them. In this thesis, we propose the explications with the help of ontologies of conceptual ans semantic knowledge concerning the logistic processes. This explicit knowledge is then used to develop a reasoning system to guide the logistic expert for an incremental and semi-automatic construction of a software solution to an instantly posed problem. We define an ontology concerning the inter-connected logistics and associated optimization problem. We, henceforth, establish an explicit semantic link between the domains of logistics and the optimization. It may allow the logistic expert to identify precisely and unambiguously the confronted logistic problem and the associated optimization problem. The identification of the problems then leads to a process to choose the solutions ranging from the choice of the precise logistic process to be implemented to that of the method to solve the combinatorial problem until the discovery of the software component to be invoked and which is implemented by a web service. The approach we have adopted and implemented has been experimented with the "Vehicle Routing Problems", the "Passenger Train Problem" and the "Container Terminal problems".
|
| 7 |
Energy use in the operational cycle of passenger rail vehicles / Energianvändning i passagerarjärnvägsfordons driftcykelVinberg, Erik Magni January 2018 (has links)
This master thesis investigates and analyzes the energy use for traction and auxiliary equipment in passenger rail vehicles. It covers both the train service with passengers and when the trains are going through other stages in the everyday operation. The operational cycle and associated operational situations are introduced as a way of describing the varying use of a train over time. The descriptions focus on the most common activities and situations, such as stabling and parking, regular cleaning, inspections and maintenance. Also how these situations affect energy use by their need for different auxiliary systems to be active. An energy model is developed based on the operational cycle as a primary input, together with relevant vehicle parameters and climate conditions. The latter proving to be a major influence on the energy used by the auxiliary equipment. The model is applied in two case studies, on SJ's X55 and Västtrafik's X61 trains. Both are modern electric multiple units equipped with energy meters. Model input is gathered from available technical documentation, previous studies and by measurements and parameter estimations. Operational cycle input is collected through different planning systems and rolling stock rosters. Climate input is finally compiled from open meteorological data banks. The results of the case studies show that the method and models are useful for studying the energy used by the trains in their operational cycles. With the possibility to distinguish the energy used by the auxiliary equipment, both during and outside the time the trains are in service with passengers. With this it's also possible to further investigate and study potential energy saving measures for the auxiliary equipment. Simulations of new ventilation control functions and improved use of existing operating modes on the trains show that considerable energy savings could be achieved with potentially very small investments or changes to the trains. The results generally show the importance of a continued investigation of the auxiliary equipment's energy use, as well as how the different operational situations other than the train service affect the total energy use. / Detta examensarbete utreder och analyserar energianvändningen för passagerarjärnvägsfordons traktion- och hjälpkraftssystem, både under tågdriften med passagerare och andra delmoment som tågen genomgår under den normala dagliga driften. För detta introduceras driftcykeln och tillhörande driftsituationer som ett sätt att beskriva användningen av ett tåg över tiden. Syftet är att beskriva de vanligast förekommande aktiviteterna och situationerna, såsom uppställning och parkering, regelbundna inspektioner, klargörningar och underhåll. Även hur dessa situationer påverkar energianvändningen genom ett varierande behov av hjälpkraft och aktiva funktioner i tågen. En energimodell baserad på driftcykeln som huvudsaklig indata, tillsammans med tågets egenskaper samt det omgivande klimatet, tas fram. Klimatet visar sig vara en avgörande faktor i hjälpkraftens energianvändning. Modellen utvärderas i typstudier på SJs X55 och Västtrafiks X61. Båda är elektriska motorvagnståg utrustade med energimätare. Indata till modellen samlas in genom tillgänglig teknisk dokumentation, tidigare studier och genom mätningar samt parameterestimering. Driftcyklerna för tågtyperna sammanställs med hjälp av olika planeringssystem och omloppsplaner. Väder- och klimatdata samlas slutligen in från öppna databaser för metrologiska data. Resultaten från typstudierna visar att metoden och modellerna är användbara verktyg för att kunna beskriva tågens energianvändning i deras driftcykler. Med möjligheten att särskilja hjälpkraftssystemens energianvändning vid tågdriften med passagerare men även i de övriga situationerna. Med detta blir det också möjligt att undersöka potentiella energibesparingsåtgärder för hjälpkraftssystemen. Simulering av förbättrade styrfunktioner för ventilationen och förbättrat utnyttjade av redan inbygga energibesparande driftlägen på tågen visar att betydande energibesparingar kan fås med relativt små medel och få förändringar på fordonen. De sammantagna resultaten av arbetet visar på vikten av att fortsätta undersöka och utreda hjälpkraftens energianvändning samt hur driftsituationerna utanför tågdriften med passagerare påverkar den totala energianvändningen.
|
| 8 |
Railway curve squeal: Statistical analysis of train speed impact on squeal noiseAsplund, Ruben January 2024 (has links)
No description available.
|
Page generated in 0.0994 seconds