We propose a jackknife variance estimator for the population average from two, two-phase samples after imputation. The jackknife method has long been used to estimate and reduce bias, but has now become a valuable tool for variance estimation. We apply two different sampling methods, (simple random sampling and stratified random sampling) to derive jackknife variance estimators for the twosampl...

Recent research advocates applying sampling to accelerate microarchitecture simulation. Simple random sampling offers accurate performance estimates (with a high quantifiable confidence) by taking a large number (e.g., 10,000) of short performance measurements over the full length of a benchmark. Simple random sampling does not exploit the often repetitive behaviors of benchmarks, collecting ma...

BACKGROUND Psychopathological perfectionism is often correlated with obsessive compulsive eating disorders. OBJECTIVES The purpose of this study was to investigate perfectionism in people with high traits of obsessive compulsive and eating disorder characteristics. MATERIALS AND METHODS This study was an expo fact research. The statistical population of the research comprised of male and fe...

purpose: the aim of this study was to investigate the information poverty of post graduate students of birjand university with respect to its 4 indicators (information overload, information vacuum, information inequality, and digital divide) and the role of globalization in information poverty from their point of view. methodology: this study was a descriptive survey. the population consisted o...

Monitoring programs for urban runoff have not been assessed for effectiveness or efficiency in estimating mass emissions. In order to determine appropriate designs for stormwater, total suspended solids (TSS) and flow information from the Santa Ana River was collected nearly every 15 min for every storm of the 1998 water year. All samples were used to calculate the "true load" and then three wi...

objective: this research aimed to investigate the relationship of family affective climate, self-effectiveness, and personal-social adjustment variables with academic achievement of university students in islamic azad university, ahvaz branch, ahvaz, iran.  methods: the research sample included 300 individuals (150 females and 150 males) who were selected through random stratified sampling meth...

According to the statistical random sampling method, estimation has been taken confidence interval into account in statistics due to the unknown probability for the deviations of point estimate. In terms of fuzziness or vagueness, confidence interval is defined as a range of numerical values, not a single value, so we have to discover an estimate for that interval at first. Based on the above-m...