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 19 of 19 for “"Traffic jams"”.
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Impacts of vehicle automation on traffic flow stability
… of a small number of vehicles in the bulk traffic flow may have substantial implications on the underlying traffic flow and may influence the development of emergent phenomena such as phantom traffic jams, or traffic stability. This dissertation has four main contributions: (i) experimental …
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Phantom jam Sybil attack in connected vehicular networks
… to create ghost vehicles, inducing fake traffic jams and disturbance to other vehicles which may lead to accidents. In this work, we have developed the first sophisticated sybil attack, in which an attacker uses legitimate pseudonyms to create multiple ghost vehicles. These ghost vehicles …
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Traffic delay prediction from historical observations
Road traffic congestion is one of the biggest frustrations for the daily commuter. By improving the currently available travel estimates, one can hope to save time, fuel and the environment by avoiding traffic jams. Before one can predict the best route for a user to take, one must first be able to …
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Time-to-contact statistics as a proxy for accident probabilities
… this makes it difficult to study the impact of traffic system changes or vehicle control changes on accident rates. One potential solution to this problem is the use of time-to-contact (TTC) statistics as a proxy for accident probabilities. Low TTC can be used as a measure of potential danger. …
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The walled city : Beijing hybrid development plan in the 2nd ring road
… new center for the city; it is notorious for its traffic jams, pollution, and drastically degenerated urban environment-a "wall" that cuts off two sides of the city and its associated urbanity. The thesis explores the potential of new intervention on the site of the second ring road, adopting and …
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An Urban Soccer Stadium for Washington D.C.
Expansive parking lots, miles of asphalt, and traffic jams: this is what the modern sport stadia has come to represent. Does it have to be this way? What does the future of sports stadia hold? Can we build a stadium that is better integrated to the community around it? The stadium must become a …
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Traffic models from a velocity point of view and implementation of traffic conditions in excess fuel consumption estimates
… on any highway segment as a function of the traffic flow. It is shown that taking into account the presence of traffic jams instead of assuming all vehicles traveling at maximum velocity, as is done to obtain usual estimates, increases the deflection-induced dissipation per vehicle per …
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Bidirectional transport by molecular motors
In biological cells, the long-range intracellular traffic is powered by molecular motors which transport various cargos along microtubule filaments. The microtubules possess an intrinsic direction, having a 'plus' and a 'minus' end. Some molecular motors such as cytoplasmic dynein walk to the minus …
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Precipitações diárias intensas na cidade de João Pessoa, Paraíba.
… pluvial impacts such as flooding, landslides, traffic accident, lack of water and electricity, falling trees, traffic jams and even some wounded and dead people due do those events. Therefore, this study is important to subsidize planners and decision makers, concerning the understanding of …
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Investigation study of various carrier type for air tunnel transportation
… of such transport system can help to reduce traffic jams and deliver goods faster to its desired places. The analysis of carrier movement and the flow surrounding it was performed using FLUENT software version 16.1. The computational domain along the air tunnel was discretized using …
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A new triggering mechanism of the boiling crisis based on the percolation theory and its implication
… of critical phenomena including earthquakes, traffic jams, and the outbreak of COVID-19. Inspired by the new observations, we propose a new way to view boiling heat transfer and the boiling crisis by modeling boiling as a bubble percolation process. By combining high-resolution experimental …
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Exploring visitor experiences along the Going-to-the-Sun corridor of Glacier National Park
… of cars on this narrow historic road caused traffic problems such as crowding at pullouts and traffic jams, as well as safety issues. The situation with traffic worsened also because of the road reconstruction which was aimed to rehabilitate the road and solve traffic problems in the long …
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Exploring visitor experiences along the Going-to-the-Sun corridor of Glacier National Park
… of cars on this narrow historic road caused traffic problems such as crowding at pullouts and traffic jams, as well as safety issues. The situation with traffic worsened also because of the road reconstruction which was aimed to rehabilitate the road and solve traffic problems in the long …
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Developing and Testing a Novel De-centralized Cycle-free Game Theoretic Traffic Signal Controller: A Traffic Efficiency and Environmental Perspective
Traffic congestion negatively affects traveler mobility and air quality. Stop and go vehicular movements associated with traffic jams typically result in higher fuel consumption levels compared to cruising at a constant speed. The first objective in the dissertation is to investigate the spatial …
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Multi-color visualization and quantification of single RNA translation and HIV-1 programmed ribosomal frameshifting in living cells
… kinetic rates and demonstrate how ribosomal traffic jams contribute to the persistence of the frameshifting state. These data provide fresh insight into retroviral frameshifting and could lead to alternative strategies to perturb the process in living cells.
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Towards Developing an Integrated Microscopic Traffic Simulation Model for Large Road Networks
Traffic jams have become one of the key topics in the 21st century and cause immense losses in productivity, increase CO2 emissions and affect driver stress, travel time predictability and increased wear and tear on vehicles. To test possible countermeasures, optimise existing infrastructure or …
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Optimizing Bike Sharing Systems: Dynamic Prediction Using Machine Learning and Statistical Techniques and Rebalancing
… providing high-quality transportation services. Traffic jams are a clear sign that cities are overwhelmed, and that current transportation networks and systems cannot accommodate the current demand without a change in policy, infrastructure, transportation modes, and commuter mode choice. In …
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Movements of molecular motors : diffusion and directed walks
Bewegungen von prozessiven molekularen Motoren des Zytoskeletts sind durch ein Wechselspiel von gerichteter Bewegung entlang von Filamenten und Diffusion in der umgebenden Lösung gekennzeichnet. Diese eigentümlichen Bewegungen werden in der vorliegenden Arbeit untersucht, indem sie als Random Walks …