Search for dissertations about: "Cauchy"
Showing result 16 - 20 of 55 swedish dissertations containing the word Cauchy.
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16. The Continuous Galerkin Method for Fractional Order Viscoelasticity
Abstract : We consider a fractional order integro-differential equation with a weakly singular convolution kernel. The equation with homogeneous Dirichlet boundary conditions is reformulated as an abstract Cauchy problem, and well-posedness is verified in the context of linear semigroup theory. READ MORE
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17. GNSS and Massive MIMO : Spoofing, Jamming and Robust Receiver Design for Impulsive Noise
Abstract : In this thesis, we focus on vulnerabilities and robustness of two wireless communication technologies: global navigation satellite system (GNSS), a technology that provides position-velocity-time information, and massive multiple-input-multiple-output (MIMO), a core cellular 5G technology. In particular, we investigate spoofing and jamming attacks to GNSS and massive MIMO, respectively, and the robust massive MIMO receiver against impulsive noises. READ MORE
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18. The defocusing nonlinear Schrödinger equation with step-like oscillatory data
Abstract : The thesis at hand consists of three papers as well as an introductory chapter and a summary of results. The topic of the thesis is the study of the defocusing nonlinear Schrödinger equation with step-like oscillatory data. READ MORE
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19. Ab initio Investigation of Face-centered cubic High-Entropy Alloys
Abstract : High-entropy alloys (HEAs) represent a special group of solid solutions containing five or more principal elements. The new design strategy has attracted extensive attention from the materials science community. The design and development of HEAs with desired properties have become an important subject in materials science and technology. READ MORE
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20. Strong L1 convergence to equilibrium without entropy conditions for the spatially homogenous Boltzmann equation
Abstract : This paper deals with solutions to the Cauchy problem for the spatially homogeneous non-linear Boltzmann equation. The main result is that for the hard sphere kernel, a solution to the Boltzmann equation converges strongly in L1 to equilibrium given that the initial data f0 belongs to L1(R^3;(1+v^2)dv). READ MORE