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.
Results
Showing 1 to 20 of 104 for “"Road networks"”.
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Vehicle routing on real road networks
… thesis studies vehicle routing problems on real road networks addressing aspects of the problem that need to be modelled on the original road network graph and aims to provide appropriate modelling techniques for solving them. As a preliminary step, chapter 2 studies the travelling salesman …
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Complex Urban Road Networks: Static Structures and Dynamic Processes
We first abstract road networks as complex systems and employ tools from net- work science to study their topological properties. Our multi-scale analysis in- cludes macro-, meso-, and micro-scale perspectives, deriving insights into both common and unexpected patterns in these networks. At the …
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Controlling connectivity: the impact of expanding road networks on criminal violence
… It specifically shows the relationship between road investments and organized criminal activity. I argue that the construction of new infrastructural projects creates new economic opportunities, especially in small and medium municipalities. The improvement in the local economy creates a new set …
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Explaining the Performance of Bidirectional Dijkstra and A* on Road Networks
… their research methods. Research papers in the road networks community, however, often build upon Dijkstra's algorithm and use Bidirectional Dijkstra's algorithm as their baseline. This thesis investigates the performance of A* and Bidirectional Dijkstra in road networks to see how they compare …
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Towards Developing an Integrated Microscopic Traffic Simulation Model for Large Road Networks
… major theme in this thesis are gridded, discrete road topologies (chequerboards, Manhattan layouts) populated with vehicles “hopping” from one location to the next. An extensive literature review summarise existing approaches and it is discussed how these standardised road networks and extremely …
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Geospatial Modeling of Forest Road Networks and Their Effect on Stream Macroinvertebrate Communities
Road construction and maintenance throughout the country continues to be one of the largest contributors of sediment pollution to aquatic systems. Though impacts of road networks on aquatic systems can be potentially severe, little work has been performed to evaluate the effect that road spatial …
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Automatic road network extraction from high resolution satellite imagery using spectral classification methods
Road networks play an important role in a number of geospatial applications, such as cartographic, infrastructure planning and traffic routing software. Automatic and semi-automatic road network extraction techniques have significantly increased the extraction rate of road networks. Automated …
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Prehistoric Roads of New Mexico: A Synthesis of GIS and Remote Sensing Techniques
The existence of ancient road networks in the Chaco Canyon region of New Mexico is well documented, but roads have also been found in other Southwestern locations, as well as at other prehistoric sites all over the world. The identification and subsequent analysis of road networks can strengthen …
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Deep Learning Models for Traffic Prediction in Urban Transport Networks.
… challenged with increasing number of vehicles on roads. This results in issues including long travel time, increasingly persistent traffic congestion, accidents and road safety concerns. The research work in this thesis aims to predict traffic in urban transport networks which are capable of …
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Computing Paths in Massive Graphs
… study label-constrained shortest path queries on road networks, which request the shortest path between two vertices in labeled graphs such that all edges on the path satisfy the label constraint. Computing the shortest path between two vertices is a fundamental problem for road networks. Most …
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The design and simulation of traffic networks in virtual environments
… enable engineers to accurately model large-scale road networks and evaluate their designs through visual simulation. However, as these projects increase in scale and complexity, methodologies to intuitively design more complex and realistic simulations are highly desirable. The need of such …
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Development of a Hybrid Travel Time Forecasting Model With GIS: Design and Implementation Issues
… relatively accurate future travel time on road networks for both traffic managers and travelers by utilizing readily transferable computing software and hardware resources.
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Routing problems in stochastic time-dependent networks with applications in dynamic traffic assignment
Stochasticity is prevalent in transportation networks in general, and traffic networks in particular. The overall objective of this thesis is to study implications and significance of stochasticity in the development of models and algorithms for dynamic traffic flows in road networks. There are two …
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Improving transportation access to the South Boston Seaport District
… of the thesis are listed as follows: > Lessen road congestion at specific intersections and major streets. > Optimize Silver Line operations. > Improve local bus service. > Assess and enhance bus-priority and parking policies. Thus, the main goals in this thesis are to improve the mobility, …
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Road sector reform in Namibia: Institutional development issues
… for financing and operating extensive public road networks, they became large centralized and hierarchical public bureaucracies, with cumbersome and detailed administrative rules and a permanent staff with secure civil service protections. The ministries were fragmented by many vertical …
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Mining Massive Moving Object Datasets From RFID Flow Analysis to Traffic Mining
… characterization of traffic anomalies on massive road networks is a vital component of traffic monitoring [44]. Anomaly identification can be used to reduce congestion, increase safety, and provide transportation engineers with better information for traffic forecasting and road network design. …
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Virtual urban traffic network simulator
… experiments to determine driver behavior in road networks and also as a platform for testing route-planning algorithms. The simulator was implemented using the C4 game engine and OpenGL. The simulator is capable of producing both 3- and 2-dimensional visualizations of a traffic network. In …
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