A dual two-level inverter fed open-end winding induction motor drive with a single DCpower supply is proposed. The proposed scheme produces voltage space vector locations identical to those of a conventional three-level inverter. In the conventional neutral-clamped three-level inverter, the series-connected DC link capacitors carry the load current, resulting in a fluctuating neutral point. Als...

Neutral networks, which occur in fitness landscapes containing neighboring points of equal fitness, have attracted much research interest in recent years. In this work, we applied a standard GA and an extended GA with a variable mutation rate strategy to an abstract model of neutral networks in order to investigate the effects of selection pressure and mutation rate on the speed of population m...

In this paper, we present a hand posture recognition system (configuration and position) we designed as part of a gestural man-machine interface. After a simple image preprocessing, the parameter space (corresponding to the configuration and spatial position of the user’s hand) is directly explored using a population of points evolved via an Evolution Strategy. Giving the priority to exploring ...

In searching a market-neutral arbitrage strategy in forex market, we took a portfolio of three major currency pairs, EUR-USD, USD-JPY, and EUR-JPY. There are eight approaches, different cases of short and long positions; for example buying 1st and selling two others, etc. Historical daily FX rates were gathered since January 1990 until February 2011. Monthly covariances between daily growth rat...

Past research has demonstrated differential recognition of emotion on faces of different races. This paper reports the first study to explore differential emotion attribution to neutral faces of different races. Chinese and Caucasian adults viewed a series of Chinese and Caucasian neutral faces and judged their outward facial expression: neutral, positive, or negative. The results showed that b...