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In practical problems, auxiliary information is often available for all units of a finite population. This paper develops sample rotation method relevant to this case. The estimators of the… Continue Reading
The problem on admissibility of estimators is considered based on the point of view of the superpopulation model. The necessary and sufficient conditions for linear estimators of an arbitrary linear… Continue Reading
In July of 1987, the Sampling Survey of Children's Situation was conducted in 9 provinces/autonomous regions of China. A stratified two-stage cluster sampling plan was designed for the survey. The… Continue Reading
The fractal growth and form is considered by molecular dynamics and simulated using computer.
Abstract This paper proposes a new method for increasing the precision in survey sampling, i.e., a method combining sampling with prediction. The two cases where auxiliary information is or not… Continue Reading
In view of the problems existing in the current feeder automation (FA), such as over reliance on communication, difficulty in security protection, and self adaptation of fixed value parameters, etc,… Continue Reading
State Assessment and Fault Prediction mechanism of distribution terminal is the premise of ensuring safe and reliable operation of power grid. However, the sample size of fault rate data of… Continue Reading
This paper studies how the sample rotation method is applied to the case where item non-response occurs in surveys. The two cases where the response to the first occasion is complete or incomplete… Continue Reading
Aiming at the problems of slow fault handling speed and large blackout range in smart power distribution network, a Neighborhood Interactive Distributed Feeder Automation Method (NIDFA) method is… Continue Reading