Research on Input-Output Index System Construction of The Power Grid Company Asset Value

2021 ◽  
Author(s):  
Cheng Jia-Xu ◽  
Wang Guan-Ran ◽  
Li Hao-Lan
Keyword(s):  
Index System ◽  
Power Grid ◽  
System Construction ◽  
Input Output ◽  
Output Index ◽  
Asset Value

scholarly journals A Research on the Social Responsibility Efficiency of Chinese Listed Food Companies

2017 ◽  
Vol 21 (2) ◽  
pp. 83-90
Author(s):  
Weimei Zhang
Keyword(s):  
Social Responsibility ◽  
Index System ◽  
Returns To Scale ◽  
Listed Companies ◽  
Increasing Returns ◽  
Input Output ◽  
Increasing Returns To Scale ◽  
Dea Model ◽  
Output Index ◽  
The Social

Abstract On the basis of establishing an input-output index system of listed food companies’ social responsibility, this paper uses the DEA model to assess 22 Chinese listed food companies’ social responsibility efficiency between 2014 and 2016. Results show that the social responsibility efficiency of Chinese listed food companies is generally lower and the average of the 22 companies is only 0.665. The social responsibility management in 81.80% of listed food companies is in a relatively ineffective state. There is a big room for improvement. In addition, the social responsibility efficiencies of listed companies with different sizes are quite different. The social responsibility efficiency of large-sized listed food company is obviously higher than that of the small and medium-sized. The study also shows that the social responsibility efficiencies of most listed food companies are in the stage of increasing returns to scale and more input would be necessary in order to achieve higher efficiency.

scholarly journals Research on Key Index System and Investment Scale Calculation Model of Power Grid Investment

2021 ◽  
Vol 714 (4) ◽  
pp. 042036
Author(s):  
Ying Du ◽  
Tiannan Ma ◽  
Mingyong Wan ◽  
Jinyong Chen ◽  
Guangxiu Yu ◽  
...  
Keyword(s):  
Index System ◽  
Power Grid ◽  
Calculation Model

Online Decision Support Index System Suite for Limiting Short Circuit Current

2013 ◽  
Vol 860-863 ◽  
pp. 1857-1861
Author(s):  
Li Wen Wang ◽  
Bi Qiang Tang ◽  
Ling Ling Pan ◽  
Fei Shi ◽  
Jun Liu
Keyword(s):  
Decision Support ◽  
Index System ◽  
Short Circuit ◽  
Power Grid ◽  
Short Circuit Current ◽  
Indicator System ◽  
Current Level ◽  
System Operation ◽  
On Line ◽  
The Index System

Topology adjustment is a main measure to limit short circuit current, but changes of power grid structure might bring deep impact on power system operation. Measures to limit short circuit current are difficult to apply online due to unable to completely evaluate its safety and feasibility. This paper presents an on-line decision support indicator system, which applied to evaluate online short circuit current level of power grid. Based on practical power grid model and typical cross-section, short circuit current level under the current and future maintenance mode is analyzed, decision support to limit short circuit current is given, and the effectiveness and feasibility of limiting measures are evaluated. Analysis results show that the index system is reasonable.

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