Search for dissertations about: "Johanna Törnquist-krasemann"

Showing result 1 - 5 of 6 swedish dissertations containing the words Johanna Törnquist-krasemann.

  2. 1. Assessment of Robustness in Railway Traffic Timetables

    Author : Emma V. Andersson; Jan Lundgren; Anders Peterson; Johanna Törnquist Krasemann; Thorsten Büker; Linköpings universitet; []
    Keywords : ;

    Abstract : A tendency seen for the last decades in many European railway networks is a growing demand for capacity. An increased number of operating trains has led to a delay sensitive system where it is hard to recover from delays, where even relatively small delays are easily propagating to other traffic. READ MORE

  4. 2. The Influence of Customer Agreements and Planning Principles on Rail Freight Performance

    Author : Lars Backåker; Lundgren Jan; Johanna Törnquist Krasemann; Stefan Engevall; Markus Bohlin; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Rail freight planning; trip plan generation; routing and scheduling; dynamic assignment;

    Abstract : Rail freight transportation is recognized worldwide as a suitable transportation mode when it comes to long haul transportation of heavy commodities. The industry is also known to be capital intensive, highly dependent on infrastructural developments and requires thorough planning of operations. READ MORE

  5. 3. Mathematical models for optimising decision support systems in the railway industry

    Author : Sara Gestrelius; Johanna Törnquist-Krasemann; Mälardalens högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : After the deregulation of the Swedish railway industry, train operating companies compete for and on the same infrastructure. This makes the allocation of rail capacity a most delicate problem, and for a well-functioning railway system the allocation must be fair, efficient and functional. The capacity allocation tasks include e.g. READ MORE

  6. 4. Parallel algorithms for real-time railway rescheduling

    Author : Sai Prashanth Josyula; Johanna Törnquist Krasemann; Lars Lundberg; Mats Brorsson; Blekinge Tekniska Högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : In railway traffic systems, it is essential to achieve a high punctuality to satisfy the goals of the involved stakeholders. Thus, whenever disturbances occur, it is important to effectively reschedule trains while considering the perspectives of various stakeholders. READ MORE

  7. 5. Parallel algorithms for solving the train timetable rescheduling problem

    Author : Sai Prashanth Josyula; Johanna Törnquist Krasemann; Lars Lundberg; Blekinge Tekniska Högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Parallel computing; Parallel heuristic search algorithms; Computer Science; Datavetenskap;

    Abstract : In railways, it is essential to achieve high train punctuality. Thus, whenever disturbances occur, it is important to reschedule the trains effectively. This task is typically handled manually by traffic controllers in real-time. READ MORE