We consider paradigms for modelling grazing systems under realistic assumptions including the effects of delays. We consider, using linearized theory and Liapunov theory, the stability of steady-state positive solutions of each model. The models reflect the fact that, when prey is sufficiently...

SciNapse provides a problem solving environment for engineers, scientists, mathematicians and others interested in numerical modeling. In particular, SciNapse applies finite difference methods to transform a mathematical modeling problem specification into an executable numerical program. A...

This paper presents a new approach to suppress disturbances drawn between a direct high power phase-controlled converter and the supply network. The first stage is based on the suppression of the average reactive power owing to ZCS/ZVS mixed mode inside the converter. The second stage allows to...

The Marine-Express (ME) which is an amphibious superconducting Maglev train can run both on land and under the water. A unique method for levitation and propulsion for the ME which can be applied independently of train speeds has been proposed. The method is based on a new combined...

A generalised formulation of the non-linear behaviour of three-phase multi-limb transformers for use with an electromagnetic transient program is presented. The formulation utilizes direct analysis of a magnetic equivalent circuit to provide a Norton equivalent electrical interface at the...

The dynamic behavior of acetylcholine in the synaptic cleft with a junctional fold is modeled as a reaction–diffusion system in an axis-symmetrical two-dimensional space. The effects of the junctional fold are analyzed by computer simulation on spontaneous generation of the miniature endplate...

We here examine the natural shapes of an hyperelastic thin shell called a Carpentier's joint, when the terminal position is known. More specifically we study a rectangular strip that is a flexible thin shell with a constant curvature in its width and a null curvature in its length, at its...

Modeling and simulation of a matrix converter/induction motor drive are presented in this paper, which includes a three phase ac to ac matrix converter, an induction motor, a field oriented controller, filters and a power source. In addition, a developed precise loss calculation model for power...

The aim of this paper is to propose a modification in the classical indirect field oriented control strategy to reduce its sensitivity to electrical parameter uncertainties. This modification is based on a theoretical sensitivity analysis and introduces in the control strategy a very simple...

The design effort for a control system is mainly determined by two aspects: complexity of the process to be controlled and the control requirements. The paper describes a method to design the structure and to optimize the parameters of the control of a given river reach under consideration of...