Search for dissertations about: "switches"

Showing result 1 - 5 of 215 swedish dissertations containing the word switches.

  2. 1. Design and development of electro-responsive [8]annulene switches

    Author : Magdalena Tasic; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; electro-responsive switches; molecular switches; [8]annulenes; dibenzo[a; e]cyclooctatetraene;

    Abstract : This thesis describes studies regarding the design, synthesis, and analysis of new types of electro-responsive [8]annulene-based switches.A starting material for the targeted material is dibenzo[a,e]cyclooctatetraene (dbCOT). READ MORE

  4. 2. Towards Model-Based Condition Monitoring of Railway Switches and Crossings

    Author : Marko Milosevic; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sleeper void; Switches crossings; condition indicators; embedded sleeper accelerometer; multi-body simulations; dynamic vehicle–track interaction; MBS; S C; wheel–rail contact forces; condition monitoring; crossing rail geometry; displacement reconstruction.; model calibration;

    Abstract : Railway switches and crossings (S&C, turnouts) connect different track sections and create a railway network by allowing for trains to change between tracks. This functionality comes at a cost as the load-inducing rail discontinuities in the switch and crossing panels cause much higher degradation rates for S&C compared to regular plain line track. READ MORE

  5. 3. Optical Interconnection Architectures for High-Performance Computers and Switches

    Author : Håkan Forsberg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optical interconnections; switch fabrics; planar integrated free-space optics; high-performance computers; hypercube topology; switches and routers; embedded signal processing;

    Abstract : The incredible growth in processing power and switching capacity in high-performance computers and switches puts very high demands on the interconnection networks. This is recognized in particular in massively parallel processing and extreme switching architectures. The demands are such that new interconnection architectures must be considered. READ MORE

  6. 4. Optimisation of Railway Switches and Crossings

    Author : Björn Pålsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wheel and rail wear; railway turnout; optimisation; switch crossing; dynamic vehicle-turnout interaction;

    Abstract : Methods for simulation-based optimisation of the design of railway turnouts (switches & crossings, S&C) are developed and demonstrated. Building on knowledge of dynamic wheel–rail interaction in turnouts, it is investigated how rail profile degradation can be reduced by the optimisation of geometry and component stiffness of the track superstructure. READ MORE

  7. 5. TRL-calibration procedure using SP4T-switches

    Author : Per Andersson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; microwave measurements; network analyser calibration; S-parameter measurements; TRL-calibration; cryogenic measurements;

    Abstract : .... READ MORE