Sökning: "Johanna Törnquist Krasemann"
Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Johanna Törnquist Krasemann.
1. Assessment of Robustness in Railway Traffic Timetables
Sammanfattning : 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. LÄS MER
2. The Influence of Customer Agreements and Planning Principles on Rail Freight Performance
Sammanfattning : 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. LÄS MER
3. Mathematical models for optimising decision support systems in the railway industry
Sammanfattning : 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. LÄS MER
4. Parallel algorithms for real-time railway rescheduling
Sammanfattning : 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. LÄS MER
5. Parallel algorithms for solving the train timetable rescheduling problem
Sammanfattning : 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. LÄS MER