We present a simplified model of the atmosphere terrestrial planet as an open two-dimensional system described by ideal gas with velocity [Formula: see text], density ρ, and temperature T fields. Starting Chern–Simons equations for free inviscid fluid, external effects radiation exchange matter strata, well diffusion dissipation, are included. The resulting dynamics is governed set nonlinear di...

In this Master’s project, a simplified control model for HVDC classic has been built in the EMTDC simulation program with PSCAD v.4.2 interface. The control functions in the simplified control are based on functions from ABB Power Systems. A number of cases have been simulated to evaluate the simplified control model, which demand correct function during earth fault and load disturbances. The m...

Abstract : We show that the bound-state approach to the strange dibaryons in the Skyrme model can be considerably simplified by omitting the Skyrme stabilizing term proportional to e-2 and using the regularized version of the quantum stabilization proposed by Mignaco and Wulck . The strange dibaryons are obtained assystems consisting ofbound antikaons in a (variational) axially symmetric SU(2)-...

We introduce a simplified model for the minimization of the elastic energy in thin shells. This model is not obtained by an asymptotic analysis. The thickness of the shell remains a parameter as in Reisner-Mindlin’s model for plates and Koiter’s model for shells in the linear case. The simplified model admits always minimizers by contrast with the original one. We show the relevance of our appr...

In very deep submicron technologies, the parasitic capacitor and resistance can have a significant impact on propagation delay and functional failure. Several methods consist in evaluating the output delay or giving an approximation of the output signal. These methods are really simple and are easily used in timing analysis. However, they are unusable in functional failure analysis such as cros...