In this paper, we present an exact analysis of class DE amplifier outside optimum conditions. We derive analytical expressions of waveform equations. By using waveform equations, we derive initial values of current and voltage, switching voltage and the slope of switching voltage, output voltage and power conversion efficiency in steady state. We denote the behavior of class DE amplifier outsid...

System power reliability under varying weather conditions and the corresponding system cost are the two main concerns for designing hybrid solar–wind power generation systems. This paper recommends an optimal sizing method to optimize the configurations of a hybrid solar–wind system employing battery banks. Based on a genetic algorithm (GA), which has the ability to attain the global optimum wi...

Building of Dam from thousands of years BC was known, and the humans with use of them alwaystry to preserve and utilize surface water resources, but sedimentation problem always is the mostimportant factor in shortening the useful life of dams , and a lot of reservoirs were filled by sedimentsdue to this process and therefore most of dams have been abandoned. One of the most importantphenomena ...

The repeated bout effect (RBE) is a phenomenon characterized by less delayed onset muscle soreness (DOMS) and torque deficit after the second of 2 separate eccentric exercise bouts. Previous investigators have reported that shifting of optimum angle after an initial bout of eccentric exercise mediates the RBE. We hypothesized that an RBE for elbow extensor exercise occurs after an initial bout ...

Artificial neural networks (ANNs) have been applied to time series forecasting. Genetic algorithm (GA) can be used as an optimization search scheme to determine the near optimal architecture and parameters of a neural network, as well. In this study a rich evolutionary connectionist model is proposed, in which GA is used to determine the optimum number of input and hidden nodes of a feedforward...

We investigated the release angle that maximises the distance attained in a long soccer throw-in. One male soccer player performed maximum-effort throws using release angles of between 10 and 60o, and the throws were analysed using two-dimensional videography. The player’s optimum release angle was calculated by substituting mathematical expressions for the measured relationships between releas...

Although clinical studies have shown that posterior cut angle affects tibial component stability, biomechanical studies are lacking. Fifteen Sawbones tibiae were divided into 5 groups and prepared with 0 degrees , 3 degrees, 6 degrees, 9 degrees, and -5 degrees tibial surface cuts, and a tibial component was implanted with cement. Using a standard and then a highly congruent polyethylene insert...

PURPOSE We evaluated the progression rate of total, and upper and lower visual field defects in treated open-angle glaucoma patients. PATIENTS AND METHODS This study was a retrospective, nonrandomized, comparative study. Five-hundred forty-four eyes from 315 Japanese open-angle glaucoma patients were examined. The mean deviation (MD) and total deviation (TD) for both the upper and lower slope...