Circular economy competitiveness evaluation model based on the catastrophe progression method

2022 ◽  
Vol 303 ◽  
pp. 114223
Author(s):  
Agnieszka Karman ◽  
Mieczysław Pawłowski
2012 ◽  
Vol 518-523 ◽  
pp. 995-1000 ◽  
Author(s):  
Xue Hong Yang ◽  
Chun Wu ◽  
Zheng Wen Huang

The safety of urban human settlements has ever aroused extensive attention of the whole world. And the safety of urban human settlements and the evaluation are scarcely studied. The safety evaluation index system of urban human settlements was put forward, the safety evaluation model based on the catastrophe theory and GIS technology was built up. And the model was applied in the case study of cities in Sichuan Province. According to the above index and catastrophe progression method, the scoring and ranking of every 17 indicators of the safety evaluation in 18 prefecture-level cities in Sichuan Province were calculated. Finally, the grading map of the safety evaluation of Human Settlements in Sichuan Province was obtained. The results showed that the evaluation result is basically accordant with people's perceptions. According to concrete conditions of different cities, it should make corresponding measures and analyze deeply to get the scientific and feasible scheme.


2019 ◽  
Vol 11 (9) ◽  
pp. 2635 ◽  
Author(s):  
Fansheng Meng ◽  
Xiaoye Jin

In order to alleviate the pressures of environmental pollution and the energy crisis, and to lay out and capture huge emerging markets as soon as possible, all countries in the world are vigorously developing new energy vehicles (NEVs). This paper analyzes the factors influencing the development capability of the NEV industry from the aspects of autonomy, controllability, and stability, and constructs an evaluation index system. Based on the improved entropy method and the catastrophe progression method, we establish an evaluation model for the development capability of China’s NEV industry and comprehensively evaluate the development capability of 15 new energy auto companies. An empirical analysis finds that the outlook for the overall development capability of China’s NEV industry is not optimistic, and there is a big gap in the industry, lacking core technology and independent innovation capability. We propose countermeasures such as increasing research and development (R&D) investment and innovation, and improving policy support.


2020 ◽  
Vol 12 (15) ◽  
pp. 5988
Author(s):  
Linyan Chen ◽  
Xin Gao ◽  
Shitao Gong ◽  
Zhou Li

As an effective measure to reduce energy and material consumption, green building has drawn much attention all over the world. Under the background of ecological city construction, the development speed of green building is extremely high in China. However, it is unclear about the overview of regional green building development. This study puts forward an evaluation model to scientifically measure the regional development of green building. The rough set theory and the catastrophe progression method optimized by entropy method are utilized in the model. A case study is conducted to clarify the application of the evaluation model, and the spatial distribution of regional green building development in 2015 is shown in the end. The result shows that the evaluation model is scientific and applicable. The spatial distribution of green building development in China was uneven. Green building development concentrated on the Beijing-Tianjin-Hebei area, Jiangsu-Zhejiang-Shanghai Area, Guangdong and Chongqing. Tibet was almost the bottom in every aspect, but it performed the best in economic efficiency. This study not only contributes to the research area of green building development, but also helps to promote green buildings in practice.


2009 ◽  
Vol 29 (10) ◽  
pp. 2849-2851
Author(s):  
Li-lun ZHANG ◽  
Jian-ping WU ◽  
Jun-qiang SONG

2020 ◽  
pp. 1-11
Author(s):  
Guo Yunfeng ◽  
Li Jing

In order to improve the effect of the teaching method evaluation model, based on the grid model, this paper constructs an artificial intelligence model based on the grid model. Moreover, this paper proposes a hexahedral grid structure simplification method based on weighted sorting, which comprehensively sorts the elimination order of candidate base complexes in the grid with three sets of sorting items of width, deformation and price improvement. At the same time, for the elimination order of basic complex strings, this paper also proposes a corresponding priority sorting algorithm. In addition, this paper proposes a smoothing regularization method based on the local parameterization method of the improved SLIM algorithm, which uses the regularized unit as the reference unit in the local mapping in the SLIM algorithm. Furthermore, this paper proposes an adaptive refinement method that maintains the uniformity of the grid and reduces the surface error, which can better slow down the occurrence of geometric constraints caused by insufficient number of elements in the process of grid simplification. Finally, this paper designs experiments to study the performance of the model. The research results show that the model constructed in this paper is effective.


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