Sökning: "Complex systems modeling"

Visar resultat 11 - 15 av 372 avhandlingar innehållade orden Complex systems modeling.

1. 11. Eliciting Knowledge from Experts in Modeling of Complex Systems : Managing Variation and Interactions

   Författare :Per Wikberg; Bo Strangert; Erland Svensson; Berndt Brehmer; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Modeling; Experts; Communication; Qualitative Data; Roles; Cognitive science; Kognitionsvetenskap;

   Sammanfattning : The thematic core of the thesis is about how to manage modeling procedures in real settings. The view taken in this thesis is that modeling is a heuristic tool to outline a problem, often conducted in a context of a larger development process. LÄS MER

3. 12. Use of the CIM framework for data management in maintenance of electricity distribution networks

   Författare :Lars Nordström; Torsten Cegrell; Pekka Verho; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Asset Management; Electricity Distribution Networks; Information Systems; Data Quality; Power System Modeling; Enterprise Architecture; Common Information Model; Ontology; Systems engineering; Systemteknik;

   Sammanfattning : Aging infrastructure and personnel, combined with stricter financial constraints has put maintenance, or more popular Asset Management, at the top of the agenda for most power utilities. At the same time the industry reports that this area is not properly supported by information systems. LÄS MER

4. 13. Adaptive Task Scheduling and Resource Management Techniques for Improving Energy Efficiency on Multi-core Systems

   Författare :Jing Chen; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dynamic Voltage and Frequency Scaling DVFS ; Performance Modeling; Energy Efficiency; Runtime System; Power Modeling; Task Scheduling;

   Sammanfattning : The growing impact of energy on operational cost and system robustness becomes a strong motivation for improving energy efficiency in parallel computing systems, in addition to performance. Hardware features such as core asymmetry and Dynamic Voltage and Frequency Scaling (DVFS) aim to provide opportunities for energy-efficient computing. LÄS MER

5. 14. EMC in railway systems : measurements, modeling and analysis

   Författare :Stefan Niska; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

   Sammanfattning : The subject of this study and resulting thesis was to investigate the electromagnetic compatibility (EMC) problems in the multi-electrical signaling circuitry along a railway track. These signaling systems have been expanding over time from buried multi-wired electrical copper cables to optical fiber cables, sometimes located parallel to the contact line in the catenaries. LÄS MER

7. 15. Organization of information pathways in complex networks

   Författare :Atieh Mirshahvalad; Martin Rosvall; Santo Fortunato; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Complex systems; Complex Networks; Information; Communication; Community Detection; Significance Analysis; Resampling; Information Spreading.; computer and systems sciences; data- och systemvetenskap;

   Sammanfattning : A shuman beings, we are continuously struggling to comprehend the mechanism of dierent natural systems. Many times, we face a complex system where the emergent properties of the system at a global level can not be explained by a simple aggregation of the system's components at the micro-level. LÄS MER