Sökning: "weak coupling"

Visar resultat 1 - 5 av 79 avhandlingar innehållade orden weak coupling.

  1. 1. Correlation Functions in Integrable Theories From weak to strong coupling

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Raul Pereira; Uppsala universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Superstring theory; AdS CFT correspondence; Integrable field theories; Hexagon form factors; Theoretical Physics; Teoretisk fysik;

    Sammanfattning : The discovery of integrability in planar N=4 super Yang-Mills and ABJM has enabled a precise study of AdS/CFT. In the past decade integrability has been successfully applied to the spectrum of anomalous dimensions, which can now be obtained at any value of the coupling. LÄS MER

  2. 2. Finite Element Procedures for Fluid-structure Interaction

    Detta är en avhandling från Chalmers University of Technology

    Författare :Joakim Hermansson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk mekanik; Engineering mechanics; FEM; FSI; ALE; space-time FE; acoustic FSI; Raviart-Thomas; stabilized Crouzeix-Raviart; weak coupling; Nitsche s method; mesh smoothing; stretched elements; Winslow s method;

    Sammanfattning : This thesis concerns finite element (FE) methods for solving fluid-structure interaction (FSI) problems. Two types of fluid-structure interaction are considered. A finite element method for solving the interaction between a flowing incompressible fluid and a linear elastic structure is proposed. The flow is assumed to be laminar. LÄS MER

  3. 3. Ion escape from Mars measurements in the present to understand the past

    Detta är en avhandling från Umeå : Umeå University

    Författare :Robin Ramstad; Umeå universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mars; escape; solar wind; evolution; CME; coupling; plasma; atmosphere; Space Physics; rymdfysik;

    Sammanfattning : Present-day Mars is a cold and dry planet with a thin CO2-dominated atmosphere comprising only a few ­­­mbar pressure at low altitudes. However, the Martian surface is marked with valley networks, hydrated mineral clays, carbonates and the remains of deltas and meandering rivers, i.e. LÄS MER

  4. 4. A pseudoparabolic reaction-diffusion-mechanics system Modeling, analysis and simulation

    Detta är en avhandling från Karlstad : Karlstads universitet

    Författare :Arthur Vromans; Karlstads universitet.; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; reaction-diffusion-mechanics model; parameter delimitation; parabolic-pseudoparabolic equations; weak solvability; Rothe method; periodic homogenization; Matematik; Mathematics;

    Sammanfattning : In this thesis, parabolic-pseudoparabolic equations are derived coupling chemical reactions, diffusion, flow and mechanics in a heterogeneous medium using the framework of mixture theory. The weak solvability in 1-D of the obtained models is studied. LÄS MER

  5. 5. Voltage Source Converters with Energy Storage Capability

    Detta är en avhandling från Stockholm : KTH

    Författare :Hailian Xie; KTH.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Voltage source converter; StatCom; Energy storage; Active power compensation; Phase jump; Voltage dip; VSC; Weak network; Flux modulation; deadbeat control; TECHNOLOGY Electrical engineering; electronics and photonics Electric power engineering; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elkraftteknik;

    Sammanfattning : This project deals with voltage source converters with energy storage capability. The main objective is to study the possible benefits of energy storage to a power system with a VSC as the interface between them.First of all, a converter control system is proposed for a two level VSC. LÄS MER