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Increasing solar cells efficiency is considered as a critical factor in reducing the production costs of photovoltaic cell manufacturers. Modeling, simulation and design are key tools achievement of high-efficiency solar photovoltaic cell. The efficiency is closely connected to the physical parameters associated with the solar cell model adopted. They represent an essential analysis tool for understanding...
The modeling of a solar cell is useful for any operation of efficiency optimization or of diagnostic of the photovoltaic generator. Usually, a solar cell is represented by an equivalent electrical circuit which the physical parameters can be determined experimentally from the (current-voltage) characteristic. For the classical two exponential model, the equivalent circuit contains two diodes, a photogenerated...
The purpose of this work is the elemental mapping of enameled terracotta samples (Zellij), produced between the 13th and 20th centuries in Morocco, collected from five different monuments from Marrakech. These pieces were analyzed by two non-destructive micro X-Ray Fluorescence (XRF) spectrometers, aiming to obtain elemental distribution and elemental composition.From the obtained spectra we have...
We propose an approach for semi-automated construction of ontologies from text whose core component is a relational concept analysis (RCA) framework which extends formal concept analysis (FCA), a lattice-theory paradigm for discovering abstractions within objects x attributes tables, to the processing of several sorts of individuals described both by own properties and inter-individual links. As a...
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