Variation Of Coupling Parameter Research Articles

Modeling and Dynamic Behavior Analysis of the ICPT System with Multiple Receivers

This paper investigates modeling and dynamic behavior of inductively coupled power transfer system with multiple receivers. Firstly, by using the idea of decomposition to set up model of the inductively coupled power transfer system with multiple receivers. Then, by simulation, analyzing dynamic behavior of the inductively coupled power transfer system with two receivers. The proposed modeling method is help to clearly illustrate the dynamic behavior of each subsystem. And results indicate variation of coupling parameters has a significant influence on the dynamic behavior of the system.

3D time-varying simulations of Ca2+ dynamics in arterial coupled cells: A massively parallel implementation.

SummaryPreferential locations of atherosclerotic plaque are strongly associated with the areas of low wall shear stress and disturbed haemodynamic characteristics such as flow detachment, flow recirculation and oscillatory flow. The areas of low wall shear stress are also associated with the reduced production of adenosine triphosphate in the endothelial layer, as well as the resulting reduced production of inositol trisphosphate (IP3). The subsequent variation in Ca2+ signalling and nitric oxide synthesis could lead to the impairment of the atheroprotective function played by nitric oxide. In previous studies, it has been suggested that the reduced IP3 and Ca2+ signalling can explain the correlation of atherosclerosis with induced low WSS and disturbed flow characteristics. The massively parallel implementation described in this article provides insight into the dynamics of coupled smooth muscle cells and endothelial cells mapped onto the surface of an idealised arterial bifurcation. We show that variations in coupling parameters, which model normal and pathological conditions, provide vastly different smooth muscle cell Ca2+ dynamics and wave propagation profiles. The extensibility of the coupled cells model and scalability of the implementation provide a solid framework for in silico investigations of the interaction between complex cellular chemistry and the macro‐scale processes determined by fluid dynamics. © 2016 The Authors. International Journal for Numerical Methods in Biomedical Engineering published by John Wiley & Sons Ltd.

Histograms in heavy-quark QCD at finite temperature and density

We study the phase structure of lattice QCD with heavy quarks at finite temperature and density by a histogram method. We determine the location of the critical point at which the first-order deconfining transition in the heavy-quark limit turns into a crossover at intermediate quark masses through a change of the shape of the histogram under variation of coupling parameters. We estimate the effect of the complex phase factor, which causes the sign problem at finite density, and show that, in heavy-quark QCD, the effect is small around the critical point. We determine the critical surface in $2+1$ flavor QCD in the heavy-quark region at all values of the chemical potential $\ensuremath{\mu}$ including $\ensuremath{\mu}=\ensuremath{\infty}$.

Impedance study of V 2O 5–TeO 2–BaO glasses

Five V 2O 5–TeO 2–BaO glasses were studied using ac impedance. The measurements revealed that dc conductivities increase with V 2O 5 contents. For glasses having the same V 2O 5 content, the glass containing less BaO content has higher conductivity. The electric modulus was computer simulated using a stretched exponential relaxation function, ϕ( t) = exp[− ( t / τ 0) 1− n ]. The coupling parameter, n, is temperature and composition dependent. The variation of coupling parameter is interpreted in terms of Ngai's coupling model. The dielectric constants at high frequency limit are insensitive to the temperature but increase with V 2O 5 contents. The activation energies obtained from dc conductivity and relaxation time τ 0 are about the same. Both decrease with increasing V 2O 5 contents.