In this paper we address the problem of program discovery as deened by Genetic Programming 10]. We have two major results: First, by combining a hierarchical crossover operator with two traditional single point search algorithms: Simulated Annealing and Stochastic Iterated Hill Climbing, we have solved some problems with fewer tness evaluations and a greater probability of a success than Geneti...

A sample size calculation for logistic regression involves complicated formulae. This paper suggests use of sample size formulae for comparing means or for comparing proportions in order to calculate the required sample size for a simple logistic regression model. One can then adjust the required sample size for a multiple logistic regression model by a variance inflation factor. This method re...

Exact power and sample size calculation for bioequivalence studies with high order crossover designs using statistical software nQuery are presented. Such calculation can be very easily performed, and thus provides a convenient tool for practical usage.

The present study is a comparative study of personality type of alcoholics and drug addicts and personality type of nonalcoholics and non drug addicts. In order to test the hypotheses, samples on addicts and no-addicts are collected from various rehabilitation centres in Mumbai and Pune. Samples were restricted to only male. For the analysis purpose, 2x2 factorial ANOVA and ttest has been used....

The purpose of this study was to investigate the effect of combining Real Experimentation (RE) With Virtual Experimentation (VE) on students’ conceptual understanding of photo electric effect. To achieve this, a pre–post comparison study design was used that involved 46 undergraduate students. Two groups were set up for this study. Participants in the control group used RE to learn photo electr...

Participants in this study were randomly assigned to one of three interval groups of either one, three, or five minutes. All participants were asked to estimate a group-assigned time interval and complete the state portion of the State Trait Anxiety Inventory (STAI). It was hypothesized that higher levels of state anxiety would cause participants to overestimate the passage of time. It was also...

In clinical research, parameters required for sample size calculation are usually unknown. A typical approach is to use estimates from some pilot studies as the true parameters in the calculation. This approach, however, does not take into consideration sampling error. Thus, the resulting sample size could be misleading if the sampling error is substantial. As an alternative, we suggest a Bayes...

The aim of the study is to assess the effects of 6-weeks yogasanas training on agility and muscular strength in sportsmen. A group thirty randomly selected male players of department of physical education, Guru Nanak Dev University, Amritsar (Punjab, India) aged 18 – 24 years, volunteered to participate in the study. They were randomly assigned into two groups: Y (experimental N=15) and C (cont...

During the last three decades there has been a growing interest in algorithms which rely on analogies to natural processes. The emergence of massively parallel computers made these algorithms of practical interest. The best known algorithms in this class include evolutionary programming, genetic algorithms, evolution strategies, simulated annealing, classi er systems, and neural networks. In th...

On the one hand many people admire the often strikingly eecient results of organic evolution, on the other hand, however, they presuppose mutation and selection to be a rather prodigal and uneecient trial-and-error strategy like Monte-Carlo sampling. Taking into account the parallel processing of a heterogeneous population and sexual propagation with recombination as well as the endogenous adap...