scholarly journals Fuzzy Principal Component Analysis Model on Evaluating Innovation Service Capability

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Hui Wu ◽  
Xiao-min Gu
Keyword(s):  
Principal Component Analysis ◽  
Yangtze River ◽  
Principal Component ◽  
Yangtze River Delta ◽  
The Yangtze River ◽  
Topsis Method ◽  
Collaborative Innovation ◽  
Service Capability ◽  
Fuzzy Principal Component Analysis ◽  
The Yangtze River Delta

This article mainly evaluates the regional innovation service capacity through the TOPSIS method. Firstly, a regional collaborative innovation network is constructed and the Yangtze River Delta region is selected for analysis. Secondly, an evaluation index is constructed for innovation service capability, fuzzy principal component analysis is used to refine quantitative and qualitative index data of innovation service capability, and the index weight is calculated. Then the region of the Yangtze River Delta is selected and TOPSIS method is used to assist in the effective decision-making process of the evaluation of innovative service capabilities. Due to the large amount of data in this article, MATLAB programming is used. Finally, through the comparative analysis of the results, countermeasures and suggestions are put forward from the perspective of the improvement of collaborative innovation service capabilities.

Classification of the Urbanization Types in the Yangtze River Delta

2012 ◽  
Vol 174-177 ◽  
pp. 3603-3606
Author(s):  
Li Yang ◽  
Wei Zhang ◽  
Juan Xu
Keyword(s):  
Yangtze River ◽  
Principal Component ◽  
Yangtze River Delta ◽  
River Delta ◽  
The Yangtze River ◽  
Environmental Press ◽  
The Index System ◽  
The Yangtze River Delta

The Yangtze River Delta was selected as a case study to evaluate urban sustainability based on the index system, which was composited of economic development, social development, resources and environmental press. Factor analysis was applied to extract principal component. Then based on the factor scores of the principal components extracted from three aspects, four urbanization types are obtained.

scholarly journals Chain Innovation Mechanism of the Manufacturing Industry in the Yangtze River Delta of China Based on Evolutionary Game

2021 ◽  
Vol 13 (17) ◽  
pp. 9729
Author(s):  
Na Yu ◽  
Chunfeng Zhao
Keyword(s):  
Yangtze River ◽  
Evolutionary Game ◽  
Yangtze River Delta ◽  
River Delta ◽  
Policy Support ◽  
The Yangtze River ◽  
Strategic Choices ◽  
Collaborative Innovation ◽  
The Government ◽  
The Yangtze River Delta

It is of great theoretical and practical significance to achieve high-quality development that promotes the transformation of digestion, absorption, and re-innovation to an independent innovation model, actively participating in the restructuring of the industrial chain, and enhancing the status of the Yangtze River Delta in the global innovation chain. This study constructs a tripartite evolutionary game model of collaborative innovation led by the government, participated by upstream enterprises and downstream enterprises. Moreover, this article analyzes the strategic choices of the tripartite entities in the process of collaborative innovation, and the simulation analyzes the influencing factors of the government, upstream enterprises, and downstream enterprises’ collaborative innovation strategy selection. The results indicate that the government, upstream enterprises, and downstream enterprises have different degrees of influence on each other’s willingness to participate. In addition, the analysis proves that government policy support and financial support have different impacts on upstream enterprises and downstream enterprises.

Evolution and Development Strategy of Collaborative Innovation Network among Cities in the Yangtze River Delta-Based on Urban Innovation Index Data

2021 ◽  
pp. 1-33
Author(s):  
Yan Li ◽  
Mingque Ye
Keyword(s):  
Resource Sharing ◽  
Yangtze River ◽  
Structural Characteristics ◽  
Yangtze River Delta ◽  
Development Strategies ◽  
River Delta ◽  
Innovation Network ◽  
The Yangtze River ◽  
Collaborative Innovation ◽  
The Yangtze River Delta

Abstract The gravity model is applied to construct a collaborative innovation network between cities in the Yangtze River Delta, analyzes its structural characteristics and evolution from a network perspective, and proposes development strategies. This will help optimize the network structure of collaborative innovation among cities in the Yangtze River Delta, improve the efficiency of collaborative innovation, and promote their innovation level together. Based on the data of urban innovation indexes in 2006, 2011 and 2016, this paper reveals the structural characteristics and evolution of the collaborative innovation network between cities in the Yangtze River Delta, and puts forward corresponding development strategies. The findings are as follows: (1) The overall innovation capability of cities in the Yangtze River Delta has been continuously improved, and the strength of collaborative innovation links between cities has slowly increased. (2) The innovation development of cities in the Yangtze River Delta is unbalanced and asymmetrical. The network presents a significant “core-periphery” spatial structure and a “multi-center, multi-level” pattern, and central cities drive the development of surrounding cities. (3) A reasonable regional innovation community should be constructed from the perspectives of spatial coordination, innovation industry chain integration and resource sharing, and the collaborative innovation network should be optimized.

Assessment on the Integrated Power of Economic Development in "The Yangtze River Delta" Economic Circle - Empirical Research Based on Entropy and TOPSIS Method

2011 ◽  
Vol 347-353 ◽  
pp. 334-339
Author(s):  
Xiao Hong Zhang ◽  
Yan Yan Sun
Keyword(s):  
Economic Development ◽  
Yangtze River ◽  
Yangtze River Delta ◽  
River Delta ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
The Yangtze River ◽  
Topsis Method ◽  
Entropy Weight ◽  
The Yangtze River Delta

This paper selected 16 cities of the Yangtze River Delta as research objects, using 5 economic indicators, namely economic aggregate, economic structure, degree of openness, infrastructure construction and sustainable development to set up an evaluation index system. Based on the otherness of the evaluation index, this paper uses the entropy weight method to assess the weights impersonally. By means of TOPSIS method, this paper evaluates and compares the integrated power of economic development in “the Yangtze River Delta” economic circle.

scholarly journals Design of a Cultural Tourism Passenger Flow Prediction Model in the Yangtze River Delta Based on Regression Analysis

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Jian Xu
Keyword(s):  
Regression Analysis ◽  
Prediction Model ◽  
Yangtze River ◽  
Principal Component ◽  
Cultural Tourism ◽  
Yangtze River Delta ◽  
River Delta ◽  
The Yangtze River ◽  
Passenger Flow ◽  
The Yangtze River Delta

Cultural tourism has gained much attention in the last decade and has promoted the preservation of a variety of tangible and intangible assets of culture. In order to accurately predict the cultural tourism passenger flow in the Yangtze River Delta and improve its economic benefits, this paper designs the prediction model of cultural tourism passenger flow in the Yangtze River Delta based on regression analysis. Taking the competitiveness of passenger flow as the core, this paper selects 28 indexes from four aspects of cultural tourism brand resources, cultural tourism support and protection, and urban tourism market income to build the evaluation index system of influencing factors of passenger flow. The principal component analysis method is used to simplify many related factors into a few uncorrelated factors to eliminate the multicollinearity caused by too many dependent variables; on this basis, the principal component regression model is constructed, and the determination coefficient is used to test the model fitting. Taking 15 cultural tourism cities in the Yangtze River Delta as the research object, the results show that the designed model has a good fitting degree, and the average error is only 0.41%, which can meet the needs of the prediction of cultural tourism passenger flow in the Yangtze River Delta. After the application of the prediction model, the foreign exchange earning amount of each cultural tourism city can be increased by more than 12%. The study has revealed good results.

scholarly journals Evaluation Analysis of Forest Ecological Security in 11 Provinces (Cities) of the Yangtze River Economic Belt

2021 ◽  
Vol 13 (9) ◽  
pp. 4845
Author(s):  
Yiran Wang ◽  
Dahong Zhang ◽  
Yahui Wang
Keyword(s):  
Principal Component Analysis ◽  
Yangtze River ◽  
Principal Component ◽  
Ecological Security ◽  
Economic Pressure ◽  
The Yangtze River ◽  
Upward Trend ◽  
Response Index ◽  
Pressure Index ◽  
Resource Index

The forest ecological security of the Yangtze River Economic Belt has an important influence on improving the regional environment and promoting the sustainable development of the social economy. Therefore, the aim of this paper is to provide countermeasures and suggestions for improving the level of regional ecological security by quantitatively analyzing the forest ecological security status of the Yangtze River Economic Belt and the tributaries of the Yangtze River. Using three main aspects, i.e., resources, socio-economic pressure and maintenance response, the study established 26 indicators that affect the forest ecological security of 11 provinces (cities) in the Yangtze River Economic Belt. The index weights were determined by principal component analysis, and the forest ecological security levels of 11 provinces (cities) in the Yangtze River Economic Belt were classified and evaluated by the grey clustering method. The results show the following: (1) the principal component analysis determined the weight of the three aspect indicators. The order is as follows: resource index > socio-economic pressure index > maintenance response index. This means that the basic environmental condition which the forest growth depends on and quality and quantity of forest is most important, and the maintenance activities performed by human beings in forest resources need to be strengthened. (2) The level of the forest ecological security in all the provinces (cities) of the Yangtze River Economic Belt is relatively good, with an upward trend. The level of forest ecological security in each province (city) decreases from the upper reaches of the Yangtze River basin to the lower reaches, and the level of forest ecological security in the central cities is lower. (3) The resource index, socio-economic pressure index and maintenance response index of all the provinces and cities showed an upward trend in these four years. The provinces with a significantly higher forest resource index include Yunnan and Guizhou. Shanghai, Chongqing, Sichuan, Hunan and Jiangxi were the provinces with significantly higher socio-economic pressure values; Yunnan province, Shanghai, Jiangxi Province and Hubei province were the provinces with higher forest maintenance response values.

scholarly journals Current Status and Temporal Trend of Potentially Toxic Elements Pollution in Agricultural Soil in the Yangtze River Delta Region: A Meta-Analysis

2021 ◽  
Vol 18 (3) ◽  
pp. 1033
Author(s):  
Shufeng She ◽  
Bifeng Hu ◽  
Xianglin Zhang ◽  
Shuai Shao ◽  
Yefeng Jiang ◽  
...  
Keyword(s):  
Yangtze River ◽  
Agricultural Soil ◽  
Toxic Elements ◽  
Temporal Trend ◽  
Meta Analysis ◽  
Yangtze River Delta ◽  
Potentially Toxic Elements ◽  
River Delta ◽  
The Yangtze River ◽  
The Yangtze River Delta

Potentially toxic elements (PTEs) pollution in the agricultural soil of China, especially in developed regions such as the Yangtze River Delta (YRD) in eastern China, has received increasing attention. However, there are few studies on the long-term assessment of soil pollution by PTEs over large regions. Therefore, in this study, a meta-analysis was conducted to evaluate the current state and temporal trend of PTEs pollution in the agricultural land of the Yangtze River Delta. Based on a review of 118 studies published between 1993 and 2020, the average concentrations of Cd, Hg, As, Pb, Cr, Cu, Zn, and Ni were found to be 0.25 mg kg−1, 0.14 mg kg−1, 8.14 mg kg−1, 32.32 mg kg−1, 68.84 mg kg−1, 32.58 mg kg−1, 92.35 mg kg−1, and 29.30 mg kg−1, respectively. Among these elements, only Cd and Hg showed significant accumulation compared with their background values. The eastern Yangtze River Delta showed a relatively high ecological risk due to intensive industrial activities. The contents of Cd, Pb, and Zn in soil showed an increasing trend from 1993 to 2000 and then showed a decreasing trend. The results obtained from this study will provide guidance for the prevention and control of soil pollution in the Yangtze River Delta.

scholarly journals The Evolution of the Interactive Relationship between Urbanization and Land-Use Transition: A Case Study of the Yangtze River Delta

Land ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 804
Author(s):  
Bo Niu ◽  
Dazhuan Ge ◽  
Rui Yan ◽  
Yingyi Ma ◽  
Dongqi Sun ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Yangtze River ◽  
Yangtze River Delta ◽  
River Delta ◽  
Socioeconomic Factor ◽  
The Yangtze River ◽  
Land Use Transition ◽  
The Yangtze River Delta ◽  
Interaction Relationship

In recent years, the impact of land-use systems on global climate change has become increasingly significant, and land-use change has become a hot issue of concern to academics, both within China and abroad. Urbanization, as an important socioeconomic factor, plays a vital role in promoting land-use transition, which also shows a significant spatial dependence on urbanization. This paper constructs a theoretical framework for the interaction relationship between urbanization and land-use transition, taking the Yangtze River Delta as an example, and measures the level of urbanization from the perspective of population urbanization, economic urbanization and social urbanization, while also evaluating the level of land-use morphologies from the perspective of dominant and recessive morphologies of land-use. We construct a PVAR model and coupled coordination model based on the calculated indexes for empirical analysis. The results show that the relationship between urbanization and land-use transition is not a simple linear relationship, but tends to be complex with the process of urbanization, and reasonable urbanization and land-use morphologies will promote further benign coupling in the system. By analyzing the interaction relationship between urbanization and land-use transition, this study enriches the study of land-use change and provides new pathways for thinking about how to promote high-quality urbanization.

Sign in / Sign up

Export Citation Format

Share Document