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Purpose: Taguchi design has been adopted in order to identify optimal parametric combination for desired quality of weld. Microscopy was conducted to study the effect of welding input process parameters (welding current, gas flow rate and nozzle to plate distance) on MIG weld microstructures of AISI 409 ferritic stainless steel and AISI 316L austenitic stainless steel. Design/methodology/approach:...
This paper presents a novel method for capacitor placement in radial distribution feeders to reduce the real power loss and to improve the voltage profile. The location of the nodes where the capacitors should be placed is decided by a set of rules given by the fuzzy expert system. The sizing of the capacitors is modeled by the objective function to obtain maximum savings using Particle Swarm Optimization...
To simulate electric vehicles, appropriate battery models are required. In this work a model of the battery and a methodology for determining the parameters of a battery model using the catalog data of the batteries and Multiobjective Optimization is proposed. The technique is applied to different battery types and the results are presented.
Antenna designers are constantly challenged with the temptation to search for optimum solutions for the design of complex electromagnetic devices. The ability of using numerical methods to accurately and efficiently characterizing the relative quality of a particular design has excited the engineers to apply stochastic global evolutionary optimizers for this objective. Evolutionary techniques have...
Multi-label learning is useful in visual object recognition when several objects are present in an image. Conventional approaches implement multi-label learning as a set of binary classification problems, but they suffer from imbalanced data distributions when the number of classes is large. In this paper, we address multi-label learning with many classes via a ranking approach, termed multi-label...
Migration from the previous generation of Advent Solar emitter wrap-through (EWT) cells to the current technology platform based on 243 cm2 multicrystalline Si cells and monolithically interconnected cell and encapsulated modules has brought with it significant performance increases. Extraction of current from multiple contact pads distributed on the cell rear, optimization of the emitter through-holes,...
A hybrid wind park concept which contains both constant speed wind turbine and variable speed wind turbine is proposed in this paper, as it can provide similar power quality and similar low voltage ride through capability with relatively low investment. The objective is to optimize the configuration of a hybrid wind park which has low levelised production cost, high power quality, high reliability...
We study the problem of computing the minimum volume enclosing ellipsoid (MVEE) containing a given set of ellipsoids S = {E1, E2, hellip, En} sube Ropfd. We show how to efficiently compute a small set X sube S of size at most a = |X| = O(d2/epsi ) whose minimum volume ellipsoid is an (1 + epsi)-approximation to the minimum volume ellipsoid of S. We use an augmented real num ber model of computation...
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