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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.
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Přednádražní prostor a dopravní terminál města Havířova / City of Havířov Traffic Terminal and Area in Front of the Railway StationŘezníček, Josef January 2013 (has links)
The main task of this thesis was to deal with the specifics of the location so that the newly proposed structure had the potential for sustainable development of all its features. In future space transport terminal station does not arise only an end in itself, but mainly there is created an interaction point, which results in a value and attractiveness of the surrounding land. Ultimately, this process has lead to a zcelení city, to enhance its attractiveness and the external and internal view of the city itself.
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Kollektivtrafik på svaj : En fallstudie för ökad tillgänglighet vid långa bytessträckor med fokus på vattenburen kollektivtrafik / Public Transport Adrift : A Case Study for Increased Accessibility at Long-distance Transfers with a Focus on Public Transport on WaterDeurell, Göran January 2016 (has links)
Vattenburen kollektivtrafik tenderar att ha längre bytessträckor än buss och spårtrafik. Då långa byten kräver mer av resenären är uppsatsens syfte att undersöka hur bytet till och från pendelbåtar kan se ut vid en för trafiken större bytespunkt. Därigenom kanske vi kan lära oss mer om resenärens informationsbehov vid byten över längre avstånd. Därtill har målet varit att presentera rekommendationer som kan stärka förutsättningarna för vattenburen kollektivtrafik, med särskilt fokus på bryggan (angöringspunkten) vid Klara Mälarstrand och den närliggande järnvägsstationen Stockholm Central. Arbetet har utförts i form av en fallstudie som undersökte platsen utifrån upplevd närhet och -tydlighet, med empiri bestående av egentagna bilder, kartor, avståndsmätningar samt dokument. Datainsamlingen pågick under lång tid, parallellt med Trafiknämndens egna utredningar av trafik till och från bryggan. Analysen visade att bryggan vid Klara Mälarstrand är bristfälligt integrerad med omgivande kollektivtrafik och att en tydlig vägledning saknas. I diskussionen förs ett resonemang om vikten av att entréer till kollektivtrafiken, exemplifierat av pendeltågens nya station Stockholm City, synliggör sin funktion även på långt håll. Resenärer bör även ges möjlighet att relatera längre bytessträckor till en tidsåtgång, liknande den ’uppskattad gåtid till gate’ som används på storflygplatser som Köpenhamns flygplats Kastrup. / Public transport on water tend to have longer transfer paths than bus and rail transport. As long transfers paths demands more from the passenger this thesis aims to investigate what a transfer to and from water buses may look like at a transfer point with public transport on water of major importance for a planned service in Stockholm, Sweden. Through that more knowledge about the information needs of passengers at transfers over longer distances might be gained. In addition the thesis aims to present recommendations which can strengthen the conditions for public transport on water, with a focus on the stop (quay) near the Stockholm Central station. The thesis has been carried out as a case study which examined the study area on the basis of perceived proximity and -legibility,with empirics consisting of images taken by the author, maps, distance measurements and documents. Data collection time has been long, in parallel with the Stockholm County Administrations (SLL) own investigations of the traffic. The analysis showed that the quay at Klara Mälarstrand has a lacking integration with surrounding public transport and that a clear wayfinding is missing. In the discussion an argument for the importance of legible entrances to public transport also at a distance is made, exemplified by the new Stockholm City commuter train station building. Also passengers at longer transfer paths needs to be able to relate the distance with the time to get there, similar to the ‘approximate walking time to gate’ used at major airports such as Copenhagen Airport, Kastrup in Denmark.
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Estudo comparativo entre o condicionamento de ar geotérmico e o convencional e suas perspectivas para o sistema elétrico nacional / Comparative study between geothermal and conventional air conditioning and prospects for the national electrical systemNardin, Carlos Roberto de 03 June 2015 (has links)
This dissertation deals with a comparison between energy consumption of conventional air conditioning and the surface geothermal conditioning for room environments.
Studies have been conducted about soil constitution, heat exchangers and specifications of the tubes for water circulation. Based on these studies was the fitting of a conditioning system utilizing surface geothermal energy using a testing room and another one fitted with a conventional window air conditioner in an analog testing room environment. An electronic circuit maintains the temperature in the conventional air-conditioning reference room in similar conditions to the testing room using geothermal conditioning, also monitoring the power consumption in both units for comparative purposes.
In this study, it was used the hill-climbing heuristic method to control and manage the best possible heat exchange with the underground, together with a DC converter used to regulate the electrical load of the hydraulic pump and the fan used in the geothermal conditioner. Experiments were performed with and without electronic management, proving so that this electronic control method increases the geothermal conditioner yielding and reduces power consumption.
During the geothermal experiments the underground saturation suffered in the late summer period due to seasonal variation of soil temperature in the adopted depth and also
because the sizing of the geothermal heat exchanger was below than planned. This fact, however served to demonstrate that this HCC condition does not maximize the thermal exchanges necessary to the proper functioning of the geothermal conditioner, and consequently, having an increase in electric power consumption.
Among the major contributions of this dissertation is the development of a methodology for estimation of heat exchange between the basement and the living environment. One can also include how the sizing of the underground hoses and the electronic controller to manage the thermal exchanges between the underground and the conditioned environment. It proved also the feasibility of shallow geothermal energy for conditioning inhabited environments without heat pumps to reduce electricity consumption. / Esta dissertação trata da comparação do consumo de energia elétrica entre o ar condicionado convencional e o condicionamento térmico com a utilização da energia geotérmica superficial.
Foram realizados estudos sobre a constituição do solo, dos trocadores de calor e das características técnicas dos tubos para a circulação de água. Baseado nestes estudos foi realizado a montagem de um sistema de condicionamento utilizando a energia geotérmica superficial usando uma sala de testes e outra com a instalação de um ar condicionado convencional de janela num ambiente idêntico à sala de testes. Um circuito eletrônico mantém a temperatura na sala de referência com condicionamento de ar convencional em condições semelhantes a da sala de testes com condicionamento geotérmico, fazendo também o monitoramento do consumo de energia elétrica em ambos os equipamentos para fins comparativos.
Neste trabalho, utilizou-se o método heurístico hill climbing control (HCC) para gerenciamento da melhor troca térmica possível com o solo, em conjunto com um conversor de corrente contínua usado para regular a carga elétrica da bomba hidráulica e do ventilador utilizados no condicionador geotérmico. Experimentos foram realizados com e sem o uso do gerenciamento eletrônico, onde se comprova que este método de controle eletrônico aumenta o rendimento do condicionador geotérmico e reduz o seu consumo de energia elétrica.
Durante os experimentos o subsolo sofreu saturação no final do período de verão, devido à variação sazonal de temperatura do solo na profundidade adotada e também devido ao dimensionamento do trocador de calor geotérmico ser inferior ao planejado. Este fato, porém serviu para demonstrar que nesta condição o HCC não maximizou as trocas térmicas necessárias para o funcionamento adequado do condicionador geotérmico, e consequentemente, ocorreu um aumento do consumo de energia elétrica.
Entre as principais contribuições desta dissertação está o desenvolvimento de uma metodologia para estimação das trocas de calor entre o subsolo e o ambiente habitável. Pode-se incluir também a forma do dimensionamento das mangueiras a serem enterradas no subsolo e o controlador eletrônico para gerenciar as trocas térmicas entre o subsolo e o ambiente condicionado. Provou-se também a viabilização do uso da energia geotérmica superficial para condicionamento de ambientes habitados sem bombas de calor com a finalidade de reduzir o consumo de energia elétrica.
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GIS-based Episode Reconstruction Using GPS Data for Activity Analysis and Route Choice Modeling / GIS-based Episode Reconstruction Using GPS DataDalumpines, Ron 26 September 2014 (has links)
Most transportation problems arise from individual travel decisions. In response, transportation researchers had been studying individual travel behavior – a growing trend that requires activity data at individual level. Global positioning systems (GPS) and geographical information systems (GIS) have been used to capture and process individual activity data, from determining activity locations to mapping routes to these locations. Potential applications of GPS data seem limitless but our tools and methods to make these data usable lags behind. In response to this need, this dissertation presents a GIS-based toolkit to automatically extract activity episodes from GPS data and derive information related to these episodes from additional data (e.g., road network, land use).
The major emphasis of this dissertation is the development of a toolkit for extracting information associated with movements of individuals from GPS data. To be effective, the toolkit has been developed around three design principles: transferability, modularity, and scalability. Two substantive chapters focus on selected components of the toolkit (map-matching, mode detection); another for the entire toolkit. Final substantive chapter demonstrates the toolkit’s potential by comparing route choice models of work and shop trips using inputs generated by the toolkit.
There are several tools and methods that capitalize on GPS data, developed within different problem domains. This dissertation contributes to that repository of tools and methods by presenting a suite of tools that can extract all possible information that can be derived from GPS data. Unlike existing tools cited in the transportation literature, the toolkit has been designed to be complete (covers preprocessing up to extracting route attributes), and can work with GPS data alone or in combination with additional data. Moreover, this dissertation contributes to our understanding of route choice decisions for work and shop trips by looking into the combined effects of route attributes and individual characteristics. / Dissertation / Doctor of Philosophy (PhD)
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