Zahreh Agha Rahimi

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In order to increase the efficiency of thin-film solar cells, the nanostructure of these cells has to be optimized. To this end, simulations of the optical wave in thin-film solar cells are required. The frequency dependence of the refraction index of materials, like amorphous silicon (a-Si:H), cannot be described by dispersive models like Drude model.(More)
Light diffraction from lithography masks depends on the geometrical shape of the mask pattern which is created by an etch process. The analysis of relevant effects requires the application of an accurate electromagnetic field solver. In this paper, we present an appropriate simulation method based on the Finite Integration (FI) technique for solving(More)
The standard finite-difference time-domain equations can model propagation of wave in dispersive media. However in case of plasmas and metals, the negative values of permittivity makes the standard time iteration scheme unstable. We describe a numerical technique to solve Maxwell's equations in frequency domain in this case.
BACKGROUND Considering globalization of health care and quality improvement trend to respond to competition and customer orientation, attention to organizational structure and its relationship with market orientation is essential. Therefore, this study reviews the relationship between organizational structure and market orientation in selected hospitals of(More)
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