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Lead-acid battery is the basic components of the emergency power supply (EPS) system because of its large capacity, low cost and low self-discharge rate, while the remaining capacity as an important parameter to measure the battery capacity indicator directly affects the safe operation of the system. A model, GM (1, N) gray model, is introduced in this paper to figure out the remaining capacity of...
This article studies the relationship between CEO duality and corporate performance based on different ownership concentration. We divide the sample by cluster analysis into two subgroups, the high ownership concentration level subgroup and low ownership concentration level subgroup. After that, principal component analysis is employed to calculate the performance index based on an evaluation system...
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