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Visar resultat 11 - 15 av 425 avhandlingar som matchar ovanstående sökkriterier.

1. 11. Fuel-efficient and safe heavy-duty vehicle platooning through look-ahead control

   Författare :Valerio Turri; Karl H. Johansson; Nathan van de Wouw; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; platooning; eco-driving; look-ahead control; dynamic programming; distributed model predictive control; optimal control; autonomous vehicles; Electrical Engineering; Elektro- och systemteknik; Vehicle and Maritime Engineering; Farkostteknik;

   Sammanfattning : The operation of groups of heavy-duty vehicles at small inter-vehicular distances, known as platoons, lowers the overall aerodynamic drag and, therefore, reduces fuel consumption and greenhouse gas emissions. Experimental tests conducted on a flat road and without traffic have shown that platooning has the potential to reduce the fuel consumption up to 10%. LÄS MER

3. 12. Traffic Simulation Modelling of Rural Roads and Driver Assistance Systems

   Författare :Andreas Tapani; Jan Lundgren; Haris N. Koutsopoulos; Linköpings universitet; []
   Nyckelord :Traffic; Micro; Simulation; Model; Car following; Rural road; Driver; Fatigue; Rumble strip; Adaptive cruise control; Active safety system; Safety; Evaluation; Overtaking; Traffic lane; Mathematical model; Thesis; Road: Traffic theory; Road: Traffic theory; TECHNOLOGY;

   Sammanfattning : Microscopic traffic simulation has proven to be a useful tool for analysis of varioustraffic systems. This thesis consider microscopic traffic simulation of rural roads andthe use of traffic simulation for evaluation of driver assistance systems. LÄS MER

4. 13. Impacts of Traffic Signal Control Strategies

   Författare :Azhar Al-Mudhaffar; Karl-Lennart Bång; Nagui M. Rouphail; KTH; []
   Nyckelord :Driver behavior; Dilemma zone; Incident reduction; Signal control; Lhovra; Spot; Pribuss; Bus priority; Field measurement; Simulation; Calibration; Traffic performance; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : Traffic signals are very cost effective tools for urban traffic management in urban areas. The number of intersections in Sweden controlled by traffic signals has increased since the seventies, but efforts to study the traffic performance of the employed strategies are still lacking. LÄS MER

5. 14. Overload Control and Performance Evaluation of Web Servers

   Författare :Mikael Andersson; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; system; numerisk analys; Datalogi; control; systems; numerical analysis; Computer science; Content Adaptation; Admission Control; Overload Control; Web servers; Performance modeling; kontroll; Technological sciences; Teknik; Systems engineering; computer technology; Data- och systemvetenskap; Telecommunication engineering; Telekommunikationsteknik;

   Sammanfattning : We are increasingly dependent on Internet as a large aspect of our daily life is now handled via online applications. Recent years we have seen several large-scale crises. This has made crisis-related research on Internet applications important. LÄS MER

7. 15. On some Control Problems for Queues

   Författare :Bengt Bengtsson; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Queues; Control problems;

   Sammanfattning : This thesis consists of three parts. In the first one, optimal policies are constructed for some singe-line queueing situations. The second part deals with finite-state Markovian decision processes, and in the third part the practical modelling of a more complex problem is discussed and exemplified. LÄS MER