December 2010
Modified cumulative sum quality control scheme
A modified two-sided cumulative sum (MOCUSUM) quality control scheme is proposed that improves CUSUM (cumulative-sum) in average run length (ARL) properties. The MOCUSUM scheme is based on single cumulative sum that may be positive or negative and hence can be generalized to multivariate MOCUSUM scheme easily. In this scheme, the ‘large’ CUSUM values are shrunk towards zero, but the...
December 2010
Multi-criteria decision making using fuzzy logic approach for evaluating the manufacturing flexibility
Manufacturing flexibility is the ability of a manufacturing system to cope with environmental changes effectively and efficiently. Most operation managers cannot provide exact numerical values to express opinions based on human perception due to ill defined and ambiguity of flexibility assessment. However, fuzzy logic provides a useful tool to deal with problems in which the phenomena are imprecise and vague....
December 2010
Genetic algorithm based diamagnetic shift investigations of the GaAs0.7Sb0.3/GaAs and Al0.3Ga0.7As quantum wells
In this work we have presented some other aspects of the recently introduced GMV method (Genetic Monte Carlo Variational method). The CPU time of the method is computed and then we have applied the method to As0.7Sb0.3/GaAs quantum well to investigate the effect of the well width and Sb fraction on the diamagnetic shift. The effect of the Al doping instead of the Sb is also investigated. Key...
December 2010
Some new aspect of the application of Genetic algorithm to investigate nanostructures
Some new aspect of the application of Genetic algorithm to nanostructures is presented. We followed a method that is produced by using the Genetic Algorithm, Variation method and Monte Carlo integration Scheme (GMV method). Computational algorithm, deficiencies and advantages of the method is described and it is applied to a GaAs0.7Sb0.3/GaAs quantum well. Key words: Genetic algorithm,...
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