This paper explores how much detailed an automotive electric system geometry can be to optimize simulation computational effort. For this purpose, simulations related to two kinds of analysis -crosstalk and external radiated disturbancehave been run through a Finite Element Method (FEM) based software and a Circuit Theory based one. Crosstalk simulated signals in time domain have been statistically compared with an inside vehicle measurement. Different complexity models have been tested in this correlation process. This procedure has been used to verify automotive geometric models' accuracy for a certain frequency range. The main goal is to verify the computational savings by using some techniques and suppressing some negligible details of car's geometry.
This paper presents an efficient procedure for optimizing the electric field at ground level of high surge impedance loading transmission lines. Such lines have the capacity to achieve higher power transmission rates than the conventional ones. The ellipsoidal method is applied in order to maximize the transmitted power and minimize the electric field at ground level through the variation of the conductor's positions in the tower, given its physical and electrical constraints. By means of an efficient new approach to handle the conductors, the optimization gives birth to compact line designs combined with conventional bundles of conductors. Furthermore, it is shown that the proposed strategy can increase the transmitted power, reduce the electric field at ground level, and shorten the running time of the optimization algorithm.
This work describes a system focused on interactive audiovisual experiences developed for the State of Paraíba Court of Auditors (TCE-PB). The system includes professional and amateur productions to enable social control using multimedia technologies. As a result, the video collaboration solution, based on the Audiovisual Design model, is presented.
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