With the increasing power demand, voltage fluctuations are to be controlled for a reliable and stable power system. On the same way voltage fluctuations create reactive power mismatch in the system. To overcome these conditions we have to perform reactive power optimisation that would balance the reactive power flow of the system. There are several methods and algorithms that serve best for thi...

A new mismatch insensitive 1.5-bit multiplying digital–analogue converter (MDAC) is proposed. This circuit samples the input in closed-loop form using the opamp in non-inverting configuration; hence, only the parasitic input capacitance loads the previous stage. This technique uses a fully-differential four-input OTA instead of two single-ended two-input OTAs to further improve power consumptio...

Analysis and simulation are presented of the mismatched load condition for a balanced class-E power amplifier, which is based on 90° hybrids at its input and output. The performances of the 200-Watt balanced class-E amplifier, such as the output power and efficiency, were analyzed and compared to the conventional single-ended class-E power amplifier for the 1:3 VSWR mismatch condition. The simu...

Here is suggested a solution to the accommodationvergence mismatch problem in 3D stereoscopic displays. It can be achieved by compensating the mismatched focal length with refractive power of adjustable-focus 3D glasses. The compensation would make vergence of human eyes match with position of virtual stereoscopic motion pictures, reducing visual fatigue.

Particle Swarm Optimization (PSO) with elite PSO parameters has been developed for power flow analysis under practical constrained situations. Multiple solutions of the power flow problem are useful in voltage stability assessment of power system. A method of determination of multiple power flow solutions is presented using a hybrid of Particle Swarm Optimization (PSO) and local search techniqu...

Four-wave mixing and walk-off between two optical beams are investigated for focusing Kerr media. It is shown that four-wave mixing reinforces the self-focusing of mutually trapped waves by lowering their power threshold for collapse, only when their phase mismatch is small. On the contrary, walk-off inhibits the collapse by detrapping the beams, whose partial centroids experience nonlinear osc...

In an antenna array the element pattern correlation and the array matching depend on each other. For lossless two-element arrays the general formulation of the dependency of array matching on pattern correlation is given and solved numerically for some basic cases. Array matching is given as a characteristic mismatch coefficient and as the mean relative reflected power.

We contrast the spatial mismatch hypothesis with what we term the racial mismatch hypothesis - that the problem is not a lack of jobs, per se, where blacks live, but a lack of jobs where blacks live into which blacks are hired. We first report new evidence on the spatial mismatch hypothesis, using data from Census Long-Form respondents. We construct direct measures of the presence of jobs in de...

This paper analytically and numerically investigates misalignment mode-mismatch induced power coupling coefficients losses as a function of Hermite Gauss (HG) mode order. We show that higher-order HG modes are more susceptible to beam perturbations when, for example, into optical cavities: the mode-mismatch-induced scale linearly quadratically with respect indices respectively. As result, toler...