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Metal materials may degrade the performances of RFID systems by changing the characteristics of antennas, which result in a short read range. Different from other studies managing to design special antenna surfaces to minish metal effects,this paper gives a deployment method which only changes the gap between the antenna and metal, and adds some medium to integrate them. By adjusting the gap's thickness,...
With respect to the problem of large group decision-making based on utility valued preference information, the paper puts forward the entropy weight method to appraise members' information, to predigest calculates. Then the paper classifies members using cluster analysis with weights, to get members' weights and concentrate members' preference information. Finally, the paper uses degree of opinion...
A two-echelon inventory system of repairable items is considered. For the repairable items with high-value and low- demand rate that include condemnation, continuous (S-1,S) ordering strategy is adopted. Neighbor support strategy for inventory pooling is presented to obtain high service levels at a low cost. The premise of neighbor support is that it is more efficient to obtain needed stock from the...
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