Two-rate Evaluation Model and Empirical Study on Circular Economy of Parks

Author(s):  
Yun FU ◽  
Ling LIN ◽  
Li-li WU
2021 ◽  
Vol 9 (2) ◽  
pp. 343-350 ◽  
Author(s):  
Tetyana Skrypko ◽  
Nazariy Popadynets ◽  
Tetiana Yakhno ◽  
Roman Shulla ◽  
Tetiana Vlasenko ◽  
...  

The paper shows the results of an empirical study on the optimization of polymer waste supply chains based on the circular economy in Ukraine. The research shows that the main links in the activity should be harmonized for quality and quick optimization of polymer waste supply chains, including the processes of collecting, sorting, treatment, processing, and recycling of resources for maintaining the quality by total cost reduction. The research argues that the circular economy that stipulates the easy processing, recycling, disassembling, and restoring of products replaced the traditional linear model “take, produce, and throw out” that has dominated the economy by now. The study shows that the transformation of supply chains in production ecosystems forms competitive advantages at the enterprises that allow them to be more productive through efficient use of resources.


2012 ◽  
Vol 472-475 ◽  
pp. 3125-3128
Author(s):  
Zhi Ming Xie ◽  
Guo Hui Lan ◽  
Xuan Yi

This paper applies extension comprehensive evaluation method to evaluate resources value flow (RVF) efficiency of coal-fired power plant (CFPP) in the development of circular economy, analyzes the influence factors of resource value efficiency level, and establishes the matter-element evaluation model of RVF efficiency for CFPP. It also illustrates the application process of extension comprehensive evaluation method through case studies, simply reflecting the efficiency level of RVF in CFPP.


2014 ◽  
Vol 8 (1) ◽  
pp. 164-170
Author(s):  
Yousong Wang ◽  
Yufan Zhang ◽  
Yang Li ◽  
Martin H. Asare ◽  
Yan Zhang

The ecological system of the construction industry had been divided into three aspects, i.e.economy, scale and technology. Basing on the ecological niche theory, this paper established the evaluation model and studied on the ecologi-cal niche status about national regional construction industry in China using statistical data from 2007 to 2012. The analy-sis results show that Jiangsu, Zhejiang and Liaoning have the highest scores in the economic and the scaled niche. Tianjin, Beijing and Jiangsu’s technology niche are better. Overall, Integrated niche still has a better performance in Jiangsu, Zhe-jiang and Liaoning. The calculated values are 0.1002, 0.0696 and 0.0592 respectively. In terms of the discreteness and the diversity, the score of the scaled niche is the highest. The economic niche’s score is the second. And the lowest score is belonged to the technology niche. It is also found that the national construction industry has an unbalanced development in each area. The construction industry depends on the advantage of the economic investment and scaled advantage in the eastern coastal and the central regions. The level of the management and the technology is still low in the whole industry. Therefore, it is suggested that the Chinese government should enhance the strength of the construction investment and de-velopment in the north and west regions, ensuring the good developmental situation in the eastern and central regions. The R&D and the spreading of the technological advanced achievement should be strengthened. And the management and the technology level of the construction industry should be improved.


2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Min Du ◽  
Zhonghua Cheng ◽  
Enzhi Dong

In this paper, the terminal air defense equipment system of systems (TADESoS) is studied as an example. The TADESoS is an important part of the joint air defense equipment system of systems, which mainly carries out the combat task to the low altitude flight target. The contribution rate evaluation of the TADESoS can provide theoretical basis for guiding the tactical plan of the TADESoS. Aiming at the problems existing in the evaluation of contribution rate of TADESoS, such as the difficulty of describing the structure of system of systems, the strong subjectivity of the evaluation method, and the difficulty of application of the evaluation results, this paper proposes a method of evaluating the contribution rate of the TADESoS based on fault tree. The method describes the structure of the TADESoS by multiattribute nodes. The probability of the top event is calculated by using the probability of the bottom event. Finally, based on the importance of the bottom event, the contribution rate evaluation model of the TADESoS is established, which solves the existing problems in the current research. Finally, the feasibility of the method is verified by an example.


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