in order to study the effects of drought stress and nitrogen (n) levels on grain yield, yield components and water use efficiency of grain corn (sc.704), a field experiment was conducted in 2009 growing season. the experiment was split-plot based on randomized complete block design arrangement and four replicates. main plots were three irrigation levels included optimum irrigation (i1), moderat...

nowadays the use of the switched reluctance motors (srms) has been considerably increased in various home and industrial applications. despite of many advantages of this type of motors, such as simple structure, low cost, and high reliability, the main disadvantage of them is the generation of high torque pulsation. this paper presents a novel method to optimize a typical srm such that the torq...

The last few decades have produced significant improvements in the design of upper limb prostheses through the increasing use of technology. However the limited function exhibited by these devices remains rooted in their single degree of freedom format. Commercial myoelectric hand prostheses warrant high grip forces to ensure stable prehension due to a planar pincer movement. Hence precise and ...

Suppose some or all of p predictor variables X 1 , X 2 ; : : :; X p may be measured and their values used to predict a response Y. When measurement costs are considered, it may be advantageous to measure predictors serially, deciding adaptively which variable to measure next with an option to stop taking measurements and predict Y at any point during the measurement process. In this article we ...

This paper addresses a constrained optimization problem in the context of Topological Optimum Design (TOD): the aim is to find the optimal shape of a structure (i.e a repartition of material in a given design domain) such that the mechanical behavior of that structure meets some requirement (e.g. a bound on the maximal displacement under a prescribed loading). We restrict to stochastic optimiza...

This paper gives a comprehensive study for the losses in DC-DC Multilevel Boost Converter “MLBC”. A closed formula for the currents in different branches and the efficiency of the system are calculated. Different switching frequencies will be considered. The equations given to calculate the power loss in each branch is used to give an indication of the individual power loss that facilitates com...

The main objective of structural engineers through out design history has been to obtain the optimum structure under the prescribed design conditions which can not only withstand external loads safely but also achieve an economic solution. The paper focuses on the use of the fuzzy set theory to optimum design of plane truss structures. The approach is illustrated on planar truss optimization pr...

A method is developed for analytically determining the holographic optical element phase function that is optimum for transforming a set of input wave fronts into a corresponding set of output wave fronts. These sets are allowed to be infinite in the sense that the wave-front phases can be given as functions of continuous parameters. The method can be tolerant of specified wave-front aberration...

The distance transform has found many applications in image analysis. Chamfer distance transforms are a class of discrete algorithms that offer a good approximation to the desired Euclidean distance transform at a lower computational cost. They can also give integer-valued distances that are more suitable for several digital image processing tasks. The local distances used to compute a chamfer ...