ST
S. Thoen
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2 records found
1
Master thesis
(2018)
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Sebastiaan Thoen, Lorant Tavasszy, Goncalo Homem de Almeida Correia, Ron van Duin, Michiel de Bok
Tour formation is a distinguishing feature of freight transportation. An increasing amount of research is dedicated to the consideration of tour formation in freight simulation models, but these tour formation models lack statistical calibration on empirical data, do not represent shipments explicitly, or focus on a narrow segment of freight transportation. This paper presents a novel shipment‐based approach to model tour formation behavior. We developed an algorithm that constructs tours through iterative allocation of an additional shipment. Two choice models provide an empirical foundation to this algorithm. Parameters of these choice models are estimated on a dataset with information regarding over two million shipments. This information is gathered automatically from the planning systems of carriers transporting goods in the Netherlands. With this model we are able to reproduce observed tour patterns excellently for a given set of shipments. In addition, the model considers many objectives and constraints that determine the tour formation process and acknowledges differences between goods, vehicle, and location types. For example, shipments at ports tend to be transported with direct tours, while tours starting at a distribution center have more stops. This model can be applied in a shipment‐based freight simulation framework to construct tours for large third‐party carriers in the Netherlands.
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Tour formation is a distinguishing feature of freight transportation. An increasing amount of research is dedicated to the consideration of tour formation in freight simulation models, but these tour formation models lack statistical calibration on empirical data, do not represent shipments explicitly, or focus on a narrow segment of freight transportation. This paper presents a novel shipment‐based approach to model tour formation behavior. We developed an algorithm that constructs tours through iterative allocation of an additional shipment. Two choice models provide an empirical foundation to this algorithm. Parameters of these choice models are estimated on a dataset with information regarding over two million shipments. This information is gathered automatically from the planning systems of carriers transporting goods in the Netherlands. With this model we are able to reproduce observed tour patterns excellently for a given set of shipments. In addition, the model considers many objectives and constraints that determine the tour formation process and acknowledges differences between goods, vehicle, and location types. For example, shipments at ports tend to be transported with direct tours, while tours starting at a distribution center have more stops. This model can be applied in a shipment‐based freight simulation framework to construct tours for large third‐party carriers in the Netherlands.
Blue Arches
The Pinheiros as a bridge to improve social accessibility, environmental quality and the connection between people and water
Student report
(2017)
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Karishma Asarpota, Nadi Modderman, Sebastiaan Thoen, Taneha Kuzniecow Bacchin, Fransje Hooimeijer
Sao Paulo, a megacity of almost 11 million inhabitants in its city center, is facing environmental, societal and infrastructural challenges due to its rate of rapid urbanization. The rivers in the Tiete basin reflect the painful truth of unmanageable urban planning and the unawareness of water as a valuable source. The rivers, once the blood vessels of the city, now function as a barrier in the development of the city by their stench and filthy appearance.
An integrated design approach, covering multiple scales and disciplines, aims at tackling the issues by emphasizing the value of water. The Pinheiros should function as a bridge to improve social accessibility, environmental quality, and the connection between people and water.
In a natural environment nothing is straight, everything is connected and balanced in an organic form. In Sao Paulo, as the city has expanded, the urban form has become linear and rigid. The city has modified the natural shape of the river. Blue arches envisions a resemblance of the original meandering shape of the Pinheiros. By connecting blue-green infrastructure on both sides with a green bridge for commuting and leisure, allowing for the meandering shape of the ecological places to cross the river. ...
An integrated design approach, covering multiple scales and disciplines, aims at tackling the issues by emphasizing the value of water. The Pinheiros should function as a bridge to improve social accessibility, environmental quality, and the connection between people and water.
In a natural environment nothing is straight, everything is connected and balanced in an organic form. In Sao Paulo, as the city has expanded, the urban form has become linear and rigid. The city has modified the natural shape of the river. Blue arches envisions a resemblance of the original meandering shape of the Pinheiros. By connecting blue-green infrastructure on both sides with a green bridge for commuting and leisure, allowing for the meandering shape of the ecological places to cross the river. ...
Sao Paulo, a megacity of almost 11 million inhabitants in its city center, is facing environmental, societal and infrastructural challenges due to its rate of rapid urbanization. The rivers in the Tiete basin reflect the painful truth of unmanageable urban planning and the unawareness of water as a valuable source. The rivers, once the blood vessels of the city, now function as a barrier in the development of the city by their stench and filthy appearance.
An integrated design approach, covering multiple scales and disciplines, aims at tackling the issues by emphasizing the value of water. The Pinheiros should function as a bridge to improve social accessibility, environmental quality, and the connection between people and water.
In a natural environment nothing is straight, everything is connected and balanced in an organic form. In Sao Paulo, as the city has expanded, the urban form has become linear and rigid. The city has modified the natural shape of the river. Blue arches envisions a resemblance of the original meandering shape of the Pinheiros. By connecting blue-green infrastructure on both sides with a green bridge for commuting and leisure, allowing for the meandering shape of the ecological places to cross the river.
An integrated design approach, covering multiple scales and disciplines, aims at tackling the issues by emphasizing the value of water. The Pinheiros should function as a bridge to improve social accessibility, environmental quality, and the connection between people and water.
In a natural environment nothing is straight, everything is connected and balanced in an organic form. In Sao Paulo, as the city has expanded, the urban form has become linear and rigid. The city has modified the natural shape of the river. Blue arches envisions a resemblance of the original meandering shape of the Pinheiros. By connecting blue-green infrastructure on both sides with a green bridge for commuting and leisure, allowing for the meandering shape of the ecological places to cross the river.