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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.
1

Reimagining Streets through the Autonomous Car

Chambard, Agustin Andres 13 July 2023 (has links)
The widespread adoption of autonomous cars has the potential to revolutionize urban transportation, but what impact will it have on urban form? This thesis examines the hypothesis that adopting autonomous cars can transform street space into a more human-centric purpose, leading to more livable and sustainable cities. The research was conducted through a literature review, analysis of case studies, and the development of specific street designs in order to reveal possible scenarios. The literature review suggests that adopting autonomous cars can reduce the need for parking and increase the efficiency of transportation. Furthermore, the rise of shared cars is expected to revolutionize the way people move. With the advent of autonomous cars, it is possible that personal cars will become less necessary as people can rely on these constant-moving vehicles for transportation. These changes will impact our cities creating new opportunities to improve the urban space. The thesis explores these challenges and opportunities through design for the actual urban environment of Washington D.C. As the capital of the United States, the country where cars have significantly shaped its cities, it is also home to influential political and policy-makers. As a result, the city offers a good opportunity to rethink the future urban environment when this technology will be widely adopted. The findings of this thesis suggest that the adoption of autonomous cars has the potential to transform urban form reclaiming street space for people, but also requires careful planning and design to ensure that the benefits are distributed equitably and the negative impacts are minimized. The thesis concludes with four street proposals, each performing a different role in the city and the results provoke a reflection of the role of the street in our cities. / Master of Science / The widespread use of self-driving cars can transform our lives in cities. This new technology could lead to a more human-centered urban environment, where streets are designed for people rather than cars. The use of self-driving cars could also reduce the need for parking and improve the efficiency of transportation. However, this transformation requires careful planning and design to ensure that the benefits are distributed fairly and that negative impacts are minimized. A recent study looked at the potential impact of self-driving cars in Washington D.C., and suggests that the adoption of this technology could transform urban form and make cities more livable and sustainable. The study concludes with several street design proposals that could help shape the future of our cities. The findings of this thesis suggest that the adoption of autonomous cars has the potential to transform urban form reclaiming street space for people, it concludes with street proposals, each performing a different role in the city.
2

Ekosystemtjänstbedömningar : Utvärdering av metodik för att synliggöra värdet av naturen inom stadsplanering / Ecosystem service assessments : Evaluation of methodology to assess and represent the value of nature in urban planning

Emilsson, Håkan January 2015 (has links)
The purpose of this study was to analyze and develop a workflow for assessing and representing the value of ecosystems to professionals involved in municipal planning. A thorough literature review was conducted and supplemented by interviews and observations. Frameworks for ecosystem service assessments were analyzed and combined with methods in urban planning in order to assess social and ecological conditions. A workflow was set up and methods were evaluated by applying them to a case study in the area Åstråket in Uppsala. Experience from the case study was compiled in order to improve the workflow. Complex assessments were identified and simplified for the method to be useful for practitioners. A list of relevant urban ecosystem services was compiled. Eleven activities were chosen and divided into three blocks: planning, situation analysis and redesign. In the planning phase strong civil dialogue would be used to identify user needs and based on them formulate goals for the planned change. In the situation analysis the extent to which ecosystem services were utilized, and how much potential there were to increase the use of them without exceeding the area's biophysical conditions, were assessed. The different ecosystem services in the area were evaluated according to how well they helped to achieve designated goals for the area. In the design stage social-ecological urbanism were used to create a design that will increase the value of ecosystem services for the users of the site. Arrow diagram were used to show how the proposed design supports species in the ecosystem that generates an increased value of the prioritized ecosystem services and contribute to achieving the objectives of the area. The study showed that the value of ecosystem could be made visible by showing how different actors contribute to goal achievement. The methods for quantifying ecosystem services are still trivial and ignore some fundamental social-ecological relations. The methods for social assessments could not be fully tested in the case study because there was ongoing consultation on a plan proposal that prevented any interviews with the users to be done. Assumptions that were important to simplify ecosystem service assessment was that 1) a broad definition of value was used, not just monetary, and that 2) the focus was on increasing the value of ecosystem services rather than replacing some services with others. To improve the method more knowledge on social-ecological interactions is required, a broader discussion about values need to be raised and a more standardized set of indicators needs to be agreed upon. Ecosystem services can also be used as a pedagogical tool for learning about systems thinking, complexity and a diversity of values. / Syftet med studien var att utveckla och testa en arbetsgång för att synliggöra värdet av naturen för yrkesutövare inom kommunal planering. En grundlig litteraturstudie genomfördes och kompletterades med intervjuer och observationer. Ramverk för ekosystemtjänstbedömningar analyserades och kombinerades med metoder inom samhällsplanering för att bedöma sociala och ekologiska förhållanden. En arbetsgång utarbetades och metoder bedömdes genom att tillämpa dem i en fallstudie på området Åstråket i Uppsala. Erfarenheter från fallstudien sammanställdes för att utveckla arbetsgången. Komplexa bedömningar identifierades och förenklades för att arbetsgången skulle bli praktiskt användbar. En lista med relevanta urbana ekosystemtjänster sammanställdes. Elva aktiviteter valdes och delades in i blocken planering, nulägesanalys och redesign. I planeringsskedet användes aktiv medborgardialog för att kartlägga användarnas behov och utifrån dem formulera mål för förändringsprocessen. I nulägesanalysen bedömdes i hur stor omfattning ekosystemtjänsterna nyttjades och hur stor potentialen var för att öka nyttjandet av dem utan att överstiga områdets biofysiska förutsättningar. De olika ekosystemtjänsterna i området värderades efter hur väl de bidrog till att uppnå utpekade mål för området. I designsteget användes social-ekologisk urbanism för att skapa en design som kommer öka värdet av ekosystemtjänsterna för användarna av området. Pildiagram användes för att visa hur den föreslagna designen stödjer arter i ekosystemet som genererar ett ökat värde av prioriterade ekosystemtjänster och bidrar till uppfyllelse av målen i området. Studien visade att värdet av ekosystem kan synliggöras genom att visa hur olika aktörer bidrar till måluppfyllelse. Metoder för kvantifiering av ekosystemtjänster bedömdes inte representera fundamentala social-ekologiska relationer. Identifierade metoder för sociala bedömningar kunde inte testas fullt ut i fallstudien på grund av att samråd precis hade genomförts för aktuellt planförslag. Antaganden som var viktiga för att förenkla ekosystemtjänstbedömningen var att 1) en bred definition av värde användes, inte bara monetär, och att 2) fokus var på att öka värdet av ekosystemtjänsterna snarare än ersätta vissa tjänster med andra. För att förbättra metoden behövs mer kunskap om social-ekologiska relationer, en bred debatt om värderingar och en överenskommelse om en standardiserad uppsättning av indikatorer. Ekosystemtjänster kan även användas som ett pedagogiskt hjälpmedel för att lära ut system-tänkande, komplexitet och en mångfald av värden.

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