Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"subways"”.
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A Quantification Analysis on Potential Use of Recuperated Regenerative Braking Energy from NYCT Subways into Charging Electric Buses
… for alternative ways to reduce the needs. NYCT Subways has an existing total rolling stock of 6,418 train cars where more than half of these existing cars have and all future cars will have the capability of regenerating energy while braking. This huge rolling stock operating in a 24/7 active …
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The Capabilities and Limitations of Flywheel-based Energy Storage System Pertaining to Subways in the Event of a Power Outage
<p>In the city that never sleeps, power outages or blackouts can be a shock, especially if you are on a train amid one. For example, during the infamous 2003 blackout, thousands of people were left stuck and stranded in parts of Northeastern United States. In particular, with no trains or buses in …
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Infrastructural architecture: social design for the public realm in underground transit systems
… of these utilitarian transit spaces (subways most notably), are comparable in their role to that of the public square, court, or forum. There is an untold architectural relationship within these urban environments between subways as a space of movement, and as a place of activity. This …
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Applying life cycle assessment to analyze the environmental sustainability of public transit modes for the City of Toronto
… make the most sense from 201-427 passengers, and subways are the best choice above 918 passengers. There are a number of other passenger loading ranges where more than one transit mode makes sense; in particular, LRT and RER represent very energy-efficient options for ridership ranging from 200 to …
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THE EFFECT OF URBAN TRANSPORTATION SYSTEMS ON EMPLOYMENT OUTCOMES AND TRAFFIC CONGESTION
… expansions on passenger miles traveled (PMT) in subways and vehicle miles traveled (VMT) on roads in the US. Drawing on a panel dataset that tracks city-level expansions of subway and road systems, estimates indicate that the fundamental law of subway congestion holds as the PMT increases one for …
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Estimating the impacts of route changes for Chicago's rapid transit system
… lines, or through the mid-20th Century-era subways, with the additional option for lines on the Loop of either running back to their originating terminal or through the downtown to a terminal elsewhere in the system. Ridership has grown significantly in recent decades but the current route …
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Analytical and Computational Study of Flame Acceleration in Tubes: Effect of Wall Friction
… applications such as safety issues in mines, subways and power plants. This work is devoted to the analytical formulation and computational simulations of premixed flame acceleration induced by wall friction in tubes/channels. Specifically, the evolution of the flame dynamics and morphology is …
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Subway spaces as public places : politics and perceptions of Boston's T
Subways play crucial transportation roles in our cities, but they also act as unique public spaces, distinguished by specific design characteristics, governed by powerful state-run institutions, and subject to intense public scrutiny and social debate. This thesis takes the case of the United …
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Developing an integrated rail simulator for SimMobility
High-frequency rail transit systems such as subways play a key role in urban transportation; as such, the choices made in the design, implementation, and operation of rail networks are important. To fully understand the impacts of these choices, there is a need for an integrated analysis, where the …
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Proteômica comparativa de linhagens celulares humanas expostas a estresse oxidativo induzido por riboflavina fotossensibilizada
… acting in the damage recognition step in the two subways this system influences the effectiveness of oxidative damage repair. However, the mechanisms by which cells deficient in these enzymes respond to oxidative stress and its consequences still need to be better understood. Thus, the aim of this …
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Neighborhood ribbon integrated with local provision and public-shared space
… by the urban infrastructure such as highways, subways and ring roads. Therefore, the new Chinese communities require considerable new investment in new community infrastructure. This thesis will engage the existing urban issue at a neighborhood scale, and attempt to develop an armature to …
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Ground vibration from underground railways: how simplifying assumptions limit prediction accuracy
… to individuals living or working near subways. Much work has been done to understand and simulate the dynamic interactions between the train, track, tunnel and soil resulting in numerical models which can predict ground-borne vibration around the tunnels and at the soil surface. …
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Reduction in ground vibrations by the use of wave obstacles
… underway and afterwards through the operation of subways, for example. The establishment of new areas close to, for example, motorways and railways increases the risk of disturbing vibrations being propagated to the new buildings. It is important that efficient methods for reducing ground …
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Globalizing teacher labor for the knowledge economy: The case of New York City's Caribbean teachers
… their homes and churches, at their parties, on subways and beaches, and at festivals and parades, in Brooklyn, New York, and in Port of Spain, Trinidad, and Tobago. I interviewed these participants from March, 2013 through August, 2013, in Brooklyn, New York and in Port of Spain, Trinidad and …
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The determinants of modal choice of urban travel: a case study
… devotes a large portion of underground space to subways. However, medium-sized cities are growing, and if we assume that these medium-sized cities are growing faster than small or large cities, and that they do not have the capacity to develop subway systems, then surface level public transit …
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A New Methodology for Evaluating the Effectiveness of Bus Rapid Transit Strategies
… as light rail transit (LRT) and metro systems (subways). Transit signal priority (TSP), which provides priority to approaching buses at signalized intersections by extending the green or truncating the red, can also increase the performance of the bus service. Understanding the combined impact …