Sökning: "Hierarchical models"

Visar resultat 6 - 10 av 193 avhandlingar innehållade orden Hierarchical models.

1. 6. Hierarchical Modeling of Road Traffic Networks

   Författare :Eugene Merritt; KTH; []
   Nyckelord :traffic simulation models; calibration and validation; field data collection;

   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

3. 7. Hierarchical Concurrent Systems from a Model-Oriented perspective

   Författare :Daniel Einarson; Data Vetenskap; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; control; systems; numerical analysis; Computer science; Distributed Systems; Hierarchical Systems; Object-Orientation; Model-Orientation; Datalogi; numerisk analys; system; kontroll; Systems engineering; computer technology; Data- och systemvetenskap;

   Sammanfattning : Real world systems are normally considered as hierarchically organized, for example, we see those as hierarchies of systems including subsystems. Examples on this can be seen in organizations where people act in environments and carry within themselves their own internal subsystem of thinking processes. LÄS MER

4. 8. Hierarchical Control and Restart of Flexible Manufacturing Systems

   Författare :Kristin Andersson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Restart; Flexible manufacturing; Finite state automata; Petri nets; Supervisory control theory; Process algebra; Discrete event systems; Hierarchical control; Supervisor synthesis;

   Sammanfattning : Product life-cycles are constantly shortening, and the amount of new product types increases, for example in the automotive industry. Growing demands on flexibility and ability to decrease time to market has made it increasingly important to find methods for fast and accurate development of control programs for flexible manufacturing cells. LÄS MER

5. 9. Smart Cooperation with Network Coding in Hierarchical Wireless Networks

   Författare :Nan Li; Lars Kildehöj Rasmussen; Daniel Lucani; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wireless communications; Hierarchical networks; 5G; Cognitive radio; Internet of Things; Cooperative communications; Spectrum sharing; Network coding; Optimization; Performance analysis.; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : To achieve more dynamic, efficient and intelligent use of the scarce wireless spectrum resource, the concept of cooperation has been formalized into several hierarchical network models in future mobile networks. Cooperative communications, such as relaying, can potentially increase communication efficiency and spectrum utilization due to the broadcast nature of wireless networks, and may lead to a better support for diverse communication modes with flexible spectrum sharing. LÄS MER

7. 10. Models of Surface Roughness with Applications in Paper Industry

   Författare :Jan-Olof Johansson; Matematisk statistik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Statistik; actuarial mathematics; operations research; programming; Matematik; Statistics; Mathematics; estimation.; Surface roughness; parametric models; operationsanalys; programmering; aktuariematematik; Wood; pulp and paper technology; Pappers- och massateknik;

   Sammanfattning : This thesis comprises general parametric models for surface roughness. The models can be used in several technical and natural applications but are here only applied to the micro-structure of paper. In that application, earlier models are generalized and new models introduced. LÄS MER