Frequency-domain model reduction is a crucial concern in applying the prevailing impedance method for stability analysis of complex systems, e.g., modular multilevel converter (MMC). Recently, it has been shown that under symmetric conditions, 2 × matrix-based characterizing two coupled frequencies MMC are sufficient its analysis. However, when asymmetry occurs, principally, much higher number ...

This paper presents the preliminary results of an extensive parametric study on seismic response of two-dimensional semi-sine shaped hills to vertically propagating incident P- and SV-waves. Clear perspectives of the induced diffraction and amplification patterns are given by investigation of time-domain and frequency-domain responses. It is shown that site geometry, wave characteristics , and ...

Tourism in the third millennium has become one of the most thriving economic activities around the world, and many developmental planners and policymakers refer to tourism as the main pillar for sustainable development. Tourism is considered as one of the most complicated occupations in numerous countries worldwide and as a multi-aspect activity possessing various positive effects and utilizati...

this paper explains a model for analyzing and measuring the propagation of order amplifications (i.e. bullwhip effect) for a single-product supply network topology considering exogenous uncertainty and linear and time-invariant inventory management policies for network entities. the stream of orders placed by each entity of the network is characterized assuming customer demand is ergodic. in fa...

The IP3R calcium release channel has been simulated using a stochastic simulation algorithm (SSA;Gillespie algorithm) and De young-Keiser model. A set of different concentration for Cat' and IP3 havebeen used. Considering the Number of molecules in each state, a non linear behavior of the system can beseen clearly. The inhibiting role of the Ca+2 on the open state (X110) has been studied. The d...