Search for dissertations about: "Joakim Ekström"
Showing result 1 - 5 of 7 swedish dissertations containing the words Joakim Ekström.
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1. Contributions to the Theory of Measures of Association for Ordinal Variables
Abstract : In this thesis, we consider measures of association for ordinal variables from a theoretical perspective. In particular, we study the phi-coefficient, the tetrachoric correlation coefficient and the polychoric correlation coefficient. READ MORE
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2. Designing Urban Road Congestion Charging Systems : Models and Heuristic Solution Approaches
Abstract : The question of how to design a congestion pricing scheme is difficult to answer and involves a number of complex decisions. This thesis is devoted to the quantitative parts of designing a congestion pricing scheme with link tolls in an urban car traffic network. READ MORE
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3. Optimization Approaches for Design of Congestion Pricing Schemes
Abstract : In recent years, there has been a growing interest in congestion pricing as a tool for solving traffic congestion problems in urban areas. However, the transportation system is complex and to design a congestion pricing scheme, i.e. to decide where and how much to charge the road users, is not trivial. READ MORE
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4. On the use of traffic flows for improved transportation systems : Mathematical modeling and applications
Abstract : This thesis concerns the mathematical modeling of transportation systems for improved decision support and analysis of transportation-related problems. The main purpose of this thesis is to develop and evaluate models and methods that exploit link flows. READ MORE
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5. Data-Driven Approaches for Traffic State and Emission Estimation
Abstract : Traffic congestion is one of the most severe problems in modern urban areas. Besides the amplified travel times, traffic congestion intensifies the amount of emitted pollutants impacting human health and the environment. READ MORE