Search for dissertations about: "Time machines"

Showing result 1 - 5 of 223 swedish dissertations containing the words Time machines.

  1. 1. Horizons and time machines : global structures in locally trivial spacetimes

    University dissertation from Stockholm : Fysikum

    Author : Sören Holst; Jürgen Ehlers; ; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spacetimes; Time machines; Relativity theory; Tidsmaskiner; Relativitetsteori; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; Physics; fysik;

    Abstract : .... READ MORE

  2. 2. Quality of control and real-time scheduling allowing for time-variations in computer control systems

    University dissertation from Stockholm : Maskinkonstruktion

    Author : Martin Sanfridson; [2004]
    Keywords : real-time scheduling; sampled-data control. Performance measure; quality of control;

    Abstract : The majority of computers around us are embedded in productsand dedicated to perform certain tasks. A specific task is thecontrol of a dynamic system. The computers are ofteninterconnected by communication networks forming a distributedsystem. READ MORE

  3. 3. Ghosts and machines regularized variational methods for interactive simulations of multibodies with dry frictional contacts

    University dissertation from Umeå : Datavetenskap

    Author : Claude Lacoursière; Bo Kåggström; Ander Klarbring; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Discrete mechanics; Variational method; Contact problems; Impacts; Least action principle; Saddle point problems; Lagrange Multipliers; Constrained systems; Multibody Systems; Numerical regularization; Constraint realization; Constraint stabilization; Dry friction; Differential Algebraic Equations; Nonsmooth problems; Linear Complementarity; Quaternion algebra; Numerical linear algebra; Physics modeling; Interactive simulation; Numerical stability; Rigid body dynamics; Dissipative systems; NATURAL SCIENCES Physics Other physics Computational physics; NATURVETENSKAP Fysik Övrig fysik Beräkningsfysik;

    Abstract : A time-discrete formulation of the variational principle of mechanics is used to provide a consistent theoretical framework for the construction and analysis of low order integration methods. These are applied to mechanical systems subject to mixed constraints and dry frictional contacts and impacts---machines. READ MORE

  4. 4. Making Magic Machines

    University dissertation from KTH Royal Institute of Technology

    Author : Kristina Andersen; Kristina Höök; Mark Blythe; Steve Benford; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Människa-datorinteraktion; Human-computer Interaction;

    Abstract : How can we design experiences that explore ideas and notions of the unknown? The aim of the work outlined here is to create short, intense, workshop-like experiences that generate strong commitments, and expose underlying personal desires as drivers for new ideas. I would like to propose a material practice, which uses open-ended making to engage in the imagination of new things. READ MORE

  5. 5. Configurable Hardware Support for Single Processor Real-Time Systems

    University dissertation from Akademin för innovation, design och teknik

    Author : Susanna Nordström; Lars Asplund; Kristina Lundqvist; Krzysztof Kuchcinski; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; FPGA; real-time system; real-time kernel; RTOS; real-time operating system; vhdl; embedded system; TECHNOLOGY Information technology Computer engineering; TEKNIKVETENSKAP Informationsteknik Datorteknik; Datavetenskap;

    Abstract : This thesis describes a further development of a building block for programmable devices in embedded systems handling real-time functionality.Embedded systems are included in a variety of products within different technical areas such as industrial automation, consumer electronics, automotive industry, and communication-, and multimedia systems. READ MORE