Sökning: "Traffic flow"
Visar resultat 21 - 25 av 155 avhandlingar innehållade orden Traffic flow.
21. Creating Safety in Air Traffic Control
Sammanfattning : Is flying safe? Indeed it is -- statistics tell us that it is far more dangerous to drive a car or take the train. But flight safety does not just happen. Instead, as it is argued in this book, it is created by a well-developed air traffic control system that continues to be highly effective -- despite increasing volumes of traffic. LÄS MER
22. The Origin-Destination Matrix Estimation Problem : Analysis and Computations
Sammanfattning : For most kind of analyses in the field of traffic planning, there is a need for origin--destination (OD) matrices, which specify the travel demands between the origin and destination nodes in the network. This thesis concerns the OD-matrix estimation problem, that is, the calculation of OD-matrices using observed link flows. LÄS MER
23. Hierarchical Modeling of Road Traffic Networks
Sammanfattning : The main objective of the thesis was to develop and applymethodologies for analysis and evaluation of the applicabilityof different types of road traffic simulation models for urbantraffic conditions. For this purpose a number of models ofmacroscopic, mesoscopic and microscopic type were applied,calibrated, validated and analyzed using extensive field datacollection to obtain traffic flow, travel time and queue-lengthdata for major road networks in Stockholm and Uppsala. LÄS MER
24. Traffic Management in Software-Defined Data Center Networks
Sammanfattning : Traffic management in data centers is paramount to improving network and application performance, thereby improving the quality of service by reducing network congestion, packet loss, and latency. However, the deployment and configuration of traffic management techniques are challenging due to diverse data-center traffic characteristics, large data center topologies, and the interplay of different protocols at the routing, transport, and link layer. LÄS MER
25. Short-Term Traffic Prediction in Large-Scale Urban Networks
Sammanfattning : City-wide travel time prediction in real-time is an important enabler for efficient use of the road network. It can be used in traveler information to enable more efficient routing of individual vehicles as well as decision support for traffic management applications such as directed information campaigns or incident management. LÄS MER