Sökning: "Fredrik Lundin"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden Fredrik Lundin.

  1. 1. Uplink Load in CDMA Cellular Systems

    Detta är en avhandling från Linköping : Linköping University

    Författare :Erik Geijer Lundin; Fredrik Gunnarsson; Fredrik Gustafsson; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Code Division Multiple Access;

    Sammanfattning : Cellular mobile systems designed to handle multimedia services are currently being developed. The primary goal for any mobile system is to provide a satisfactory quality of service, both to operators and customers. Providing good quality of service while maintaining system stability requires accurate knowledge of the system load. LÄS MER

  2. 2. Case studies in omniparametric simulation

    Detta är en avhandling från Göteborg : Göteborg University

    Författare :Fredrik Lundin; Göteborgs universitet.; Gothenburg University.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; growth model; Ising model; Markov chain; omnithermal simulation; omniparametric simulationpercolatiion; Potts model; parameter estimation; partial observations; random cluster model; Richardson model; simulation driven parameter estimation; two-type Richardson model; omnithermal simulation; omniparametric simulationpercolatiion; simulation driven parameter estimation; parameter estimation; random cluster model; partial observations; Potts model; two-type Richardson model; Markov chain; Ising model; Richardson model;

    Sammanfattning : In the eld of particle systems and growths models simulation is an importanttool. When explicit calculations are too complex or impossibleto perform we may use simulations instead. We adapt a new techniquehere denoted omniparametric simulation, to the two-type Richardson,Ising and Potts models. LÄS MER

  3. 3. Idiopathic Normal Pressure Hydrocephalus Aspects on Pathophysiology, Clinical Characteristics and Evaluation Methods

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Fredrik Lundin; Göran Leijon; Carsten Wikkelsø; Bertil Romner; [2012]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Introduction. Idiopathic normal pressure hydrocephalus (iNPH) is a condition with enlargement of the cerebral ventricular system and an intracranial pressure (ICP) within normal limits. LÄS MER

  4. 4. Omniparametric simulation of the two-type Richardson model

    Detta är en avhandling från Göteborg : Chalmers University of Technology

    Författare :Fredrik Lundin; Göteborgs universitet.; Gothenburg University.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 5. Improving the functionality of synchronous machines using power electronics

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Fredrik Evestedt; Urban Lundin; C. Johan. D. Abrahamsson; Jon Kjellin; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power electronics; Synchronous machines; Excitation systems; Magnetic thrust bearing; Starting synchronous machines; Split rotor; Rotating electronics; Magnetic fields; Measurement systems; Unbalanced magnetic pull; Harmonics; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : With the advent of modern power electronics there is reason to explore what can be achieved when it is applied to a mature technology like synchronous machines. In this text several concepts will be presented on how it is possible to control forces and how to get better performance out of synchronous machines by using power electronics. LÄS MER