The aim of this paper is to identify an optimum control strategy of three-phase shunt active filters to minimize the total harmonic distortion factor of the supply current. A classical PIPI cascade control solution of the output current of the active filter and the voltage across the DC capacitor based on Modulus–Optimum criterion is taken into consideration. The control system operation has be...

According to abrasion process of machine equipment parts of overhead line system for traction power supply and characters of wear-out failures, considering on factor changes of all kinds of production conditions in practical operation, set permit of abrasion loss in coordinating with normal distribution, and abrasion loss of parts as random variables, and then establish the relation between mai...

The calcium content in limestone for chemical industry was determined by atomic absorption spectrometry. effects of soaking time, reagent and temperature on the determination were discussed method controlling variables, optimum conditions analyzed. This has advantages easy operation, low interference, high accuracy sensitivity, is widely used. experimental results show that are as follows: 0.6m...

This work analyses two heuristic algorithms based on the genetic evolution theory applied to direct sequence code division multiple access (DS/CDMA) communication systems. For different phases of an evolutionary algorithm new biological processes are analyzed, specially adapted to the multiuser detection (MuD) problem in multipath fading channels. Monte Carlo simulation results show that the de...

patients and methods fifty nine patients with indication for carpal tunnel release randomly assigned into two groups: open (n=30) or knifelight (n=29). the patients compared regarding scar length, operation duration, time to return to daily activities and amount of pain at three weeks after operation based on visual analog scale. results there was no significant differences regarding age and se...

We describe the structure, operation, and experience of the Massachusetts General Hospital ethics committee, formally called the Edwin H. Cassem Optimum Care Committee, from January 2007 through December 2013. Founded in 1974 as one of the nation's first hospital ethics committees, this committee has primarily focused on the optimum use of life-sustaining treatments. We outline specific sociode...

This paper puts forward the concept of art innovation system and model creation process. On this basis, it analyzes basic characteristics by using principle finite optimization, establishes operation mechanism based on uncertain attributes. At same time, is pointed out that essence artistic design to increase optimum attributes work reduce non-optimum work, process also a learning Research show...