The Helmholtz resonator is a prototype of a single acoustic resonance, which can be modeled with a digital resonator. This paper extends this concept by coupling several Helmholtz resonators. The resulting structure is called a Helmholtz resonator tree. The height of the tree is defined by the number of resonator layers that are interconnected. The overall number of resonance frequencies of a H...

Title: Care for MRSA carriers in the outpatient sector: A survey among MRSA carriers and physicians in two regions in Germany Authors: Heike Raupach-Rosin ([email protected]) Nicole Rübsamen ([email protected]) Sebastian Szkopek ([email protected]) Oliver Schmalz ([email protected]) André Karch ([email protected]) Rafael Mikolajczyk (rafael.mikol...

finite and boundary element methods have been used by many authors to solve mathematicalphysics problems. however, the coupling of these two methods happens to be more efficient as it combinestheir merits. in this paper, the mathematical analysis of the coupling of finite and boundary element methodsfor the helmholtz equation is presented.

Iana Markevych ([email protected]) Elisabeth Thiering ([email protected]) Elaine Fuertes ([email protected]) Dorothea Sugiri ([email protected]) Dietrich Berdel ([email protected]) Sibylle Koletzko ([email protected]) Andrea von Berg ([email protected]) Carl-Peter Bauer (cpbauer@t-online...

Nina Wawro ([email protected]) Joachim Heinrich ([email protected]) Elisabeth Thiering ([email protected]) Jürgen Kratzsch ([email protected]) Beate Schaaf ([email protected]) Barbara Hoffmann ([email protected]) Irina Lehmann ([email protected]) Carl-Peter Bauer ([email protected]) Sibylle K...

a numerical study of 3d electrokinetic flows through micromixers was performed. the micromixers considered here consisted of heterogeneous rectangular microchannels with prescribed patterns of zeta-potential at their walls. numerical simulation of electroosmotic flows within heterogeneous channels requires solution of the navier-stokes, ernest-plank and species concentration equations. it is kn...

we have developed a three level implicit method for solution of the helmholtz equation. using the cubic spline in space and nite dierence in time directions. the approach has been modied to drive numerov type nite dierence method. the method yield the tri- diagonal linear system of algebraic equations which can be solved by using a tri-diagonal solver. stability and error estimation of the...