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— The stability and dispersion performance of the recently developed Battle–Lemarie multiresolution time-domain schemes is investigated for different stencil sizes. The contribution of wavelets is enhanced and analytical expressions for the maximum allowable time step are derived. It is observed that larger stencils decrease the numerical phase error,(More)
BACKGROUND Overexpression of stromal cell-derived factor-1 in injured tissue leads to improved end-organ function. In this study, we quantify the local trophic effects of mesenchymal stem cell (MSC) stromal cell-derived factor-1 release on the effects of MSC engraftment in the myocardium after acute myocardial infarction. METHODS AND RESULTS Conditional(More)
This paper attempts to measure the capacity of consumers to efficiently choose between alternative suppliers. Across two independent datasets from the UK electricity market we find that the subsets of consumers who claimed to be switching exclusively for price reasons appropriated only between 26-39% of the maximum gains available through their choice of(More)
of the local reference node concept coupled with steady-state and transient analyses using state variables allows the incorporation of unrestrained EM modeling of microwave structures in a circuit simulator. A strategy implementing global modeling of electrically large microwave systems using the circuit abstraction is presented. This is applied to the(More)
—A full-wave moment-method technique developed for the analysis of quasi-optical (QO) systems is used to model finite grid structures in a lens system. This technique incorporates an electric-field dyadic Green's function for a grid centered between two lenses. This is derived by separately considering paraxial and nonparaxial fields. Results for the(More)
—The recently developed multiresolution time-domain technique (MRTD) is applied to the modeling of open microwave circuit problems. Open boundaries are simulated by the use of a novel formulation of the perfect matching layer (PML) absorber. PML is modeled both in split and nonsplit forms and can be brought right on the surface of the planar components. The(More)
NUTESON, TODD WILLIAM. Electromagnetic Modeling of Quasi-Optical Power Combiners. (Under the direction of Michael B. Steer.) A full-wave electromagnetic simulator is developed for the analysis of finite antenna elements and grid arrays in quasi-optical systems. This electromagnetic simulator employs an efficient Galerkin moment method technique with(More)
CHRISTOFFERSEN, CARLOS ENRIQUE. Global Modeling of Nonlinear Microwave Circuits (Under the direction of Michael B. Steer.) A global modeling concept for modeling microwave circuits is described. This concept allows the modeling of electromagnetic (EM) and thermal effects to be included in the simulation of electronic circuits, by viewing EM and thermal(More)
—A novel time adaptive time-domain technique based on the Haar expansion basis is proposed and validated for a specific circuit problem. The modeling of active and passive lumped and distributed elements, as well as of excitation and boundary conditions, is performed effectively. This scheme, based on a combination of absolute and relative thresholding,(More)