Stratified sampling is often used in opinion polls to reduce standard errors, and it is known as variance reduction technique in sampling theory. The most common approach of resampling method is based on bootstrapping the dataset with replacement. A main purpose of this work is to investigate extensions of the resampling methods in classification problems, specifically we use decision trees, fr...

The traditional manure management strategy, based on crop N needs, results in accumulation of phosphorus (P) soil due to the imbalance N/P ratio between requirement and supply. This study was conducted from 2004 2013 evaluate effects P-based liquid solid swine (LMP SMP, for manure, respectively) application, comparison with N-based application (LMN SMN, respectively), yield residual P under cor...

traditional survey methods may cause refusals to respond or untruthful replies when encounter the sensitive questions. the randomized response technique (rrt) is designed to decrease social desirability bias and obtain reliable estimates. this study aimed to apply these new methods on the sensitive questions survey.simmons model was applied in the survey of issues relevant to commercial sex amo...