Sökning: "Cauchy problem"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden Cauchy problem.

  1. 1. Data-driven Interpolation Methods Applied to Antenna System Responses : Implementation of and Benchmarking

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Lucas Åkerstedt; [2023]
    Nyckelord :Model Order Reduction; Loewner Framework; State-space Representation; Nevanlinna-Pick Interpolation; Vector Fitting; Cauchy interpolation; Antenna System Responses; Benchmarking; MoM; Data-driven; Interpolation; Modelordningsreducering; Loewner Ramverk; Tillståndsrepresentation; NevanlinnaPick Interpolering; Vector Fitting; Cauchy Interpolering; Antennsystemsvar; Prestandajämförelse; MoM; Datadriven; Interpolering;

    Sammanfattning : With the advances in the telecommunications industry, there is a need to solve the in-band full-duplex (IBFD) problem for antenna systems. One premise for solving the IBFD problem is to have strong isolation between transmitter and receiver antennas in an antenna system. LÄS MER

  3. 2. Exact Solutions in Planar Elasticity via the Cauchy-Riemann Equations

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Andreas Granath; [2022]
    Nyckelord :;

    Sammanfattning : In many engineering applications, one is interested in structures with elastic properties which undergo deformation due to external loads. This interest has motivated a deep study of the equations underlying the deformation and how to solve them during the two last centuries. LÄS MER

  4. 3. Spacetime as a Hamiltonian Orbit and Geroch's Theorem on the Existence of Fermions

    Kandidat-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Viktor Bergstedt; [2020]
    Nyckelord :3 1; ADM; black hole; canonical quantization; Cauchy surface; causality; differential geometry; Einstein-Hilbert action; general relativity; Geroch; globally hyperbolic; Hamilton s equations; numerical relativity; parallelizable; SL 2; C ; spacetime; spinor; spin structure; SO 1; 3 ; Stiefel-Whitney class; tetrad; topology;

    Sammanfattning : Over a century since its inception, general relativity continues to lie at the heart of some of the most researched topics in theoretical physics. It seems likely that the coveted solutions to problems like quantum gravity are to be found in an extension of general relativity, one which may only be visible in an alternate formulation of the theory. LÄS MER

  5. 4. A comparison of FDML and GMM for estimation of dynamic panel models with roots near unity

    Kandidat-uppsats, Lunds universitet/Nationalekonomiska institutionen

    Författare :Adrian Mehic; [2017]
    Nyckelord :econometrics; dynamic panel data; Monte Carlo; Business and Economics;

    Sammanfattning : This thesis compares the performance of the first-differenced maximum likelihood estimator (FDML) and the Blundell-Bond continuously-updating system GMM estimator of the autoregressive parameter in an AR(1) dynamic panel model without exogenous covariates, particularly focusing on the close-to-non-stationary case. This case is far from trivial, as a high degree of persistence is the norm rather than the exception in economic panels. LÄS MER

  7. 5. Cauchy Integrals Method in the Study of Perturbations of Operators

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Johan Balkare; [2016]
    Nyckelord :;

    Sammanfattning : We show that functions which are analytic on the open unit disc and fulfil the Hölder condition of order r  there, where r lies in the interval (0,1), are operator Hölder of order r on the set of all linear contractions on a Hilbert space. Further, it is known that analytic Lipschitz functions on the unit disc need not be operator Lipschitz. LÄS MER