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The Grey Correlation Analysis on the Relationship between the Rural Finance and the Rural Economical Growth in Sichuan Province 被引量:3
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作者 ZHANG Xiao-fang QI Yan-bin 《Asian Agricultural Research》 2011年第1期77-79,84,共4页
This paper analyzes the relationship between rural finance and the rural economy of Sichuan Province from 1999 to 2009 by using the sequential growth rate of the gross value of farming, forestry, animal husbandry and ... This paper analyzes the relationship between rural finance and the rural economy of Sichuan Province from 1999 to 2009 by using the sequential growth rate of the gross value of farming, forestry, animal husbandry and fishery and the sequential growth rate of the per capital total income of rural households as the indicators of rural economic development; and taking the volume of deposit, volume of credit, volume of agricultural credit and the credit volume of township enterprises as the indicators of rural financial development; as well as the method of grey correlation analysis. The results show that there is an obvious positive correlation between them, and the development of country finance has the closest connection with the sequential growth rate of farming, forestry, animal husbandry, sideline production and fishery. The loan scale of township enterprises has the biggest influence on the increase of the rural economy. The countermeasures are put forward, covering optimizing investment structure; supporting the development of township enterprises; encouraging loan; actively lightening the financial difficulties in the process of developing rural economy; innovating and exploring; and promoting the diversified development of rural finance. 展开更多
关键词 Rural finance development Rural economic growth grey correlation analysis China
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Application of Grey Correlation Degree Analysis in Broad Bean Strain Screening 被引量:1
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作者 Lin ZENG Chunqin WU +6 位作者 Guotian YANG Chaozhong ZHANG Shunsheng LU Yunfei SONG Yan LIU Lamei YANG Guixian WU 《Agricultural Biotechnology》 CAS 2018年第3期49-52,54,共5页
[Objectives] The aim was to clarify the target and approach to purifying and selecting Baoshan Touxinlv broad bean. [Methods] In 2012,5 homozygous strains were selected successfully as the material,and completely rand... [Objectives] The aim was to clarify the target and approach to purifying and selecting Baoshan Touxinlv broad bean. [Methods] In 2012,5 homozygous strains were selected successfully as the material,and completely randomized block arrangement was adopted with 3 repeated trials to analyze the effects of plant height,effective length of podding branches,branch number per plant,pod number per plant,grain number per pod and 100-grain weight on the yield of each plant in the system. [Results] The results showed that the effects of the various factors on the yield of Baoshan broad beans were in the order of grain number per pod 〉 effective length of podding branches 〉 100-grain weight 〉 pod number per plant 〉 branch number per plant 〉 plant height. [Conclusions]In breeding new strains of Baoshan broad beans,under the premise of ensuring the seed nature and quality of the original variety,priority should be given to the gain number per pod and the increment of effective length of podding branches,followed by the pod number per plant,branch number per plant,plant height,which is the best way to breed new strains of Baoshan Touxinlv broad beans. 展开更多
关键词 Touxinlv broad bean strain Economic characters grey correlation Degree analysis Baoshan
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Research on the Relationship between Corporate Social Responsibility and Financial Performance Based on Grey Correlation Analysis: Taking the Smartphone Company as an Example 被引量:1
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作者 Bingjun Li Xiaolu Li 《Open Journal of Applied Sciences》 2018年第9期431-440,共10页
In order to explore the relationship between the corporate social responsibility (CSR) and financial performance in different CSR cultures, this paper respectively takes four representative smartphone companies in Chi... In order to explore the relationship between the corporate social responsibility (CSR) and financial performance in different CSR cultures, this paper respectively takes four representative smartphone companies in China, the United States, Japan and Korea as research objects, that is Huawei, Apple, Sony and Samsung smartphone companies. Then, dividing the CSR into five dimensions i.e. shareholder, customer, supplier, technology innovation and government and establishing the grey correlation model to empirically analyze the relationship between CSR and financial performance. The results indicate that for HUAWEI, the CSR performance in shareholder, customer and technology innovation have greater impact on its financial performance;for Apple, the CSR performance in shareholder, technology innovation and customer has greater impact on its financial performance;for SONY, the CSR performance in technology innovation, customer and shareholder has greater impact on its financial performance;for Samsung, the CSR performance in technology innovation, government and shareholder has greater impact on its financial performance. 展开更多
关键词 CORPORATE Social RESPONSIBILITY Smart Phone COMPANY grey correlation analysis Financial Performance
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Evaluation of Comprehensive Performance of Agronomic Traits of Anmai 1241 by Grey Correlation Analysis and Cluster Analysis Methods
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作者 Yong HAN Zhiwei XUE Chunling YANG 《Agricultural Biotechnology》 CAS 2021年第3期44-47,70,共5页
The agronomic traits of the new wheat variety Anmai 1241 were comprehensively evaluated,in order to provide comprehensive and objective theoretical basis for further improvement and production utilization of this vari... The agronomic traits of the new wheat variety Anmai 1241 were comprehensively evaluated,in order to provide comprehensive and objective theoretical basis for further improvement and production utilization of this variety.The winter water production test results of Anmai 1241 in 14 pilot sites of Henan Seed Management Station from 2016 to 2017 were summarized.The comprehensive performance of 11 agronomic traits of Anmai 1241 in different tests sites in Henan Province was evaluated by the grey correlation analysis and clustering analysis methods.The results showed that among the observed values of 11 traits,the variation coefficient,correlation degree and weight of black embryo rate were 181.64%,0.6679 and 0.1051,respectively.The clustering analysis showed that the 11 traits could be divided into 3 groups.The first type of traits(yield,number of grains per ear and 1000-grain weight)and the third group of traits(percentage of earbearing tillers,number of productive tillers and volume weight)belonged to the yield factor traits,and the sum of their weights was 0.5242.Yield and its related factors played an important role in the variety evaluation of Anmai 1241,and the effect of black embryo on yield should be eliminated in variety improvement. 展开更多
关键词 grey correlation analysis Clustering analysis Anmai 1241 Variety evaluation
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Analysis of Factors Influencing Comprehensive Productivity of Agriculture in Henan Province on the Basis of Grey Correlation
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作者 YAN Chao-de XIAO Hong-an 《Asian Agricultural Research》 2011年第10期6-10,共5页
According to the data from Henan Statistical Yearbook from 2002 to 2008, from production capital, production conditions, labour inputs and financial support, this paper selects 11 variables influencing comprehensive p... According to the data from Henan Statistical Yearbook from 2002 to 2008, from production capital, production conditions, labour inputs and financial support, this paper selects 11 variables influencing comprehensive productivity of agriculture in Henan Province. Through calculation and analysis of grey correlation of variables and comprehensive productivity of agriculture, this paper determines the impact of different variables on comprehensive productivity of agriculture. The results show that the agricultural capital has become the most important factor influencing comprehensive productivity of agriculture in Henan Province, while the impact of production conditions, labour inputs and financial support on comprehensive productivity of agriculture in Henan Province diminishes in turn. Corresponding countermeasures and suggestions are put forward to promote the sustainable development of comprehensive productivity of agriculture in Henan Province as follows: strengthen agricultural financial system building, and ensure agricultural production expenditure; scientifically arrange allocation of agricultural resources, and improve agricultural production conditions; carry out training of agricultural skills, and elevate the quality of agricultural labour forces; increase financial expenditure for agricultural production, and optimize financial expenditure structure. 展开更多
关键词 Comprehensive productivity of agriculture grey correlation analysis method Influencing factors Henan Province China
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Multilevel Correlation Analysis of Influencing Factors on Grain Total Factor Productivity in Main Grain Producing Provinces of China
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作者 Bingjun Li Weiming Yang Xiaoxiao Zhu 《Open Journal of Applied Sciences》 2018年第1期12-24,共13页
In order to analyze the influencing factors of TFP (the abbreviation of Total Factor Productivity) deeply, this paper calculates and decomposes the TFP of the main grain producing provinces in China from 2006 to 2015 ... In order to analyze the influencing factors of TFP (the abbreviation of Total Factor Productivity) deeply, this paper calculates and decomposes the TFP of the main grain producing provinces in China from 2006 to 2015 by the DEA-Malmquist index model. On the basis of this, the grey correlation analysis model based on super-efficiency DEA is used to quantitatively analyze the influencing factors of total factor productivity, technological progress and technical efficiency. The results show that the proportion of grain sowing, the level of food economic development, the level of grain mechanization, the average scale of operations and the level of fertilizer using have the most influence on grain total factor productivity. Finally, according to the results of the analysis, some suggestions are put forward to improve the TFP of different provinces in the main grain producing areas. 展开更多
关键词 MALMQUIST Index Total Factor PRODUCTIVITY SUPER-EFFICIENCY DEA grey correlation analysis
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An Availability Evaluation Method of Web Services Using Improved Grey Correlation Analysis with Entropy Difference and Weight
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作者 Zhanbo He Huiqiang Wang +3 位作者 Junyu Lin Guangsheng Feng Hongwu Lv Yibing Hu 《国际计算机前沿大会会议论文集》 2015年第1期87-89,共3页
Web services is one of the basic network services, whose availability evaluation is of great significance to the promotion of users’ experience. This paper focuses on the problem of availability evaluation of Web ser... Web services is one of the basic network services, whose availability evaluation is of great significance to the promotion of users’ experience. This paper focuses on the problem of availability evaluation of Web services and proposes a method for availability evaluation of Web services using improved grey correlation analysis with entropy difference and weight (EWGCA).This method is based on grey correlation analysis, and use entropy difference to illustrate the changes of availability, set weight to quantize availability requirements of different operations or transactions in services. Through simulation experiment in high load scenarios for Web services, the experiment result shows that our method can realize hierarchical description and overall evaluation for availability of Web services accurately in the case of smaller test sample volumes or uncertain data even in the field of big data. 展开更多
关键词 Web services AVAILABILITY evaluation BIG data grey correlation analysis entropy DIFFERENCE WEIGHT
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A Diagnosis Method of Vibration Fault of a Steam Turbine Based on Information Entropy and Grey Correlation Analysis
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作者 CHEN Fei HUANG Shu-hong ZHANG Yan-ping GAO Wei YANG Tao 《International Journal of Plant Engineering and Management》 2009年第4期206-211,共6页
The vibration fault, one of the common faults in the steam turbine generator unit, brings great damage to the production and the running process. It is well known that the information entropy is to describe the degree... The vibration fault, one of the common faults in the steam turbine generator unit, brings great damage to the production and the running process. It is well known that the information entropy is to describe the degree of indeterminacy of the system, so the information entropy can be used to measure Despite its efficiency, one kind of information entropy is just enabled to identify make up for this limitation, based on nalysis was studied for vibration fault the vibration condition of the unit. certain part of the faults. In order to the faulty signals collected from the rotor test platform, the grey correlation adiagnosis of steam turbine shafting in this paper. The reference faulty matrix and the calculation model of grey correlation degree was established based on three kinds of information entropy. The analysis shows that grey correlation analysis is a useful method for fault diagnosis of shafting and can be used as a quantitative index for fault diagnosis. 展开更多
关键词 steam turbine vibration fault diagnosis information entropy grey correlation analysis
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Application of Grey-correlated Spectral Region Selection in Analysis of Near-infrared Spectra
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作者 ZHANG Yong XIE Yun-fei ZHAO Bing 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2011年第6期924-928,共5页
The optimal selection method of spectral region based on the grey correlation analysis was applied in the analysis of near-infrared(NIR) spectra. In order to compute "characteristic" spectral region, 160 samples o... The optimal selection method of spectral region based on the grey correlation analysis was applied in the analysis of near-infrared(NIR) spectra. In order to compute "characteristic" spectral region, 160 samples of tobacco were surveyed by NIR. Next, the whole spectral region was randomly divided into six regions, and the values of association coefficients and correlation orders of different regions were computed for total sugar, reducing sugar and nicotine. Moreover, two regions that owned the largest value of association coefficient were regarded as "characteristic" spectral region of a model. Finally, the quantitative analysis models of different components were established via the partial least squares method, and the common selection methods of spectral region were compared. The simulation results indicate that the models to choose the spectral region based on grey correlation analysis are more effective than the common selection methods of spectral region, the optimized time of algorithm is shorter, the prediction precision of the models is higher and generalization ability for quantitative analysis results is stronger. This research can provide the support for the quantitative analysis models of NIR spectra and new idea for commercial analysis software of NIR. So, it has a high application value in the analysis of NIR spectra. 展开更多
关键词 Near-infrared spectroscopy grey correlation analysis correlation degree Partial least square
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Average Incremental Correlation Analysis Model and Its Application in Fault Diagnosis
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作者 刘解放 刘思峰 +1 位作者 吴利丰 方志耕 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2015年第5期541-548,共8页
The concept of average incremental correlation degree is put forward.It has been proved that the average incremental correlation model has such properties as parallelism,consistency,affine,affine transformation isoton... The concept of average incremental correlation degree is put forward.It has been proved that the average incremental correlation model has such properties as parallelism,consistency,affine,affine transformation isotonicity and interference factors independence,and it will not lead to changes of the sequence order relation because of the data transformation.Therefore,the new model keeps good stability.Finally,the incremental average correlation model is applied to failure model analysis of equipment,and an ideal diagnostic effect is obtained. 展开更多
关键词 average increment grey correlation analysis fault diagnosis EQUIPMENT
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Comprehensive Evaluation Method for Traffic Flow Data Quality Based on Grey Correlation Analysis and Particle Swarm Optimization
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作者 Wei Ba Baojun Chen Qi Li 《Journal of Systems Science and Systems Engineering》 SCIE EI CSCD 2024年第1期106-128,共23页
Nowadays,data are more and more used for intelligent modeling and prediction,and the comprehensive evaluation of data quality is getting more and more attention as a necessary means to measure whether the data are usa... Nowadays,data are more and more used for intelligent modeling and prediction,and the comprehensive evaluation of data quality is getting more and more attention as a necessary means to measure whether the data are usable or not.However,the comprehensive evaluation method of data quality mostly contains the subjective factors of the evaluator,so how to comprehensively and objectively evaluate the data has become a bottleneck that needs to be solved in the research of comprehensive evaluation method.In order to evaluate the data more comprehensively,objectively and differentially,a novel comprehensive evaluation method based on particle swarm optimization(PSO)and grey correlation analysis(GCA)is presented in this paper.At first,an improved GCA evaluation model based on the technique for order preference by similarity to an ideal solution(TOPSIS)is proposed.Then,an objective function model of maximum difference of the comprehensive evaluation values is built,and the PSO algorithm is used to optimize the weights of the improved GCA evaluation model based on the objective function model.Finally,the performance of the proposed method is investigated through parameter analysis.A performance comparison of traffic flow data is carried out,and the simulation results show that the maximum average difference between the evaluation results and its mean value(MDR)of the proposed comprehensive evaluation method is 33.24%higher than that of TOPSIS-GCA,and 6.86%higher than that of GCA.The proposed method has better differentiation than other methods,which means that it objectively and comprehensively evaluates the data from both the relevance and differentiation of the data,and the results more effectively reflect the differences in data quality,which will provide more effective data support for intelligent modeling,prediction and other applications. 展开更多
关键词 Data quality comprehensive evaluation particle swarm optimization grey correlation analysis traffic flow data
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Response surface method using grey relational analysis for decision making in weapon system selection 被引量:9
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作者 Peng Wang Peng Meng Baowei Song 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2014年第2期265-272,共8页
A proper weapon system is very important for a na- tional defense system. Generally, it means selecting the optimal weapon system among many alternatives, which is a multiple- attribute decision making (MADM) proble... A proper weapon system is very important for a na- tional defense system. Generally, it means selecting the optimal weapon system among many alternatives, which is a multiple- attribute decision making (MADM) problem. This paper proposes a new mathematical model based on the response surface method (RSM) and the grey relational analysis (GRA). RSM is used to obtain the experimental points and analyze the factors that have a significant impact on the selection results. GRA is used to an- alyze the trend relationship between alternatives and reference series. And then an RSM model is obtained, which can be used to calculate all alternatives and obtain ranking results. A real world application is introduced to illustrate the utilization of the model for the weapon selection problem. The results show that this model can be used to help decision-makers to make a quick comparison of alternatives and select a proper weapon system from multiple alternatives, which is an effective and adaptable method for solving the weapon system selection problem. 展开更多
关键词 weapon system multiple-attribute decision making(MADM) response surface method (RSM) grey relational analysis(gra).
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Grey Relational Analysis Coupled with Principal Component Analysis Method For Optimization Design of Novel Crash Box Structure 被引量:1
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作者 Shuang Wang Dengfeng Wang 《Journal of Beijing Institute of Technology》 EI CAS 2019年第3期577-584,共8页
Crashworthiness and lightweight optimization design of the crash box are studied in this paper. For the initial model, a physical test was performed to verify the model. Then, a parametric model using mesh morphing te... Crashworthiness and lightweight optimization design of the crash box are studied in this paper. For the initial model, a physical test was performed to verify the model. Then, a parametric model using mesh morphing technology is used to optimize and decrease the maximum collision force (MCF) and increase specific energy absorption (SEA) while ensure mass is not increased. Because MCF and SEA are two conflicting objectives, grey relational analysis (GRA) and principal component analysis (PCA) are employed for design optimization of the crash box. Furthermore, multi-objective analysis can convert to a single objective using the grey relational grade (GRG) simultaneously, hence, the proposed method can obtain the optimal combination of design parameters for the crash box. It can be concluded that the proposed method decreases the MCF and weight to 16.7% and 29.4% respectively, while increasing SEA to 16.4%. Meanwhile, the proposed method in comparison to the conventional NSGA-Ⅱ method, reduces the time cost by 103%. Hence, the proposed method can be properly applied to the optimization of the crash box. 展开更多
关键词 CRASH box optimization maximum COLLISION force (MCF) specific energy absorption (SEA) grey RELATIONAL analysis (gra) principal component analysis (PCA)
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Analysis of the Influence Factors of Grain Supply-Demand Gap in China 被引量:2
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作者 Bingjun Li Weiming Yang 《Agricultural Sciences》 2018年第7期901-909,共9页
Based on the analysis of the grain supply and demand gap’s current situation in China, this paper establishes an indicator system for the influence factors of grain supply and demand gap. Then this paper calculates t... Based on the analysis of the grain supply and demand gap’s current situation in China, this paper establishes an indicator system for the influence factors of grain supply and demand gap. Then this paper calculates the correlation degree between the main grain varieties’ supply and demand gap and its influence factors. The results show that sown area and unit yield have the greatest impact on wheat supply and demand gap;per capita disposable income and unit yield have the greatest impact on corn supply and demand gap;per capita disposable income and agricultural mechanization level have the greatest impact on the supply and demand gap of soybean and rice. From the analysis results, we can obtain the difference between the factors affecting the grain supply and demand gap, and provide a certain theoretical basis and new ideas for the balance of grain supply and demand in China. 展开更多
关键词 ENTROPY Method grey correlation analysis DEMAND and Supply GAP Influence FACTORS
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The Establishment of Mathematical Models for the Composition Analysis and Identification of Ancient Glass Products
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作者 Jenny Zhang Ding Li +1 位作者 Yu Xie Junfeng Xiang 《Open Journal of Applied Sciences》 2023年第11期2149-2171,共23页
Glass is the precious material evidence of the trade of the early Silk Road. The ancient glass was easily affected by the environmental impact and weathering, and the change of composition ratios affected the correct ... Glass is the precious material evidence of the trade of the early Silk Road. The ancient glass was easily affected by the environmental impact and weathering, and the change of composition ratios affected the correct judgment of its category. In this paper, mathematical models and methods such as Chi-square test, weighted average method, principal component analysis, cluster analysis, binary classification model and grey correlation analysis were used comprehensively to analyze the data of sample glass products combined with their categories. The results showed that the weathered high-potassium glass could be divided into 12, 9, 10 and 27, 7, 22 and so on. 展开更多
关键词 Principal Component analysis System Clustering Sensitivity analysis Binary Classification Model Logistic Regression analysis grey correlation analysis
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Grey correlational and SSR analyses of cotton hybrids 被引量:1
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作者 Ma Xiongfeng Yang Daigang +7 位作者 Zhou Xiaojian Zhang Xianliang Guo Ruilin Wang Haifeng Meng Qingqin Pei Xiaoyu Zhou Kehai Zhang Wensheng 《Engineering Sciences》 EI 2013年第5期22-29,共8页
Ten upland cotton strains exhibiting 3 fiber quality traits and 8 yield traits,were grown for two years in an investigation of the correlation between grey relational analysis(GRA) and genetic identity in heterosis of... Ten upland cotton strains exhibiting 3 fiber quality traits and 8 yield traits,were grown for two years in an investigation of the correlation between grey relational analysis(GRA) and genetic identity in heterosis of cotton hybrid. The aim was to establish the optimal approach for heterosis prediction and parent selection. Plant traits data were collected and analyzed for GRA. In addition,72 simple sequence repeat(SSR) markers were examined and 148 polymorphisms were detected. Correlation analysis of GRA,genetic identity,F1 fiber quality and yield heterosis was conducted. Significant differences were observed between the two analytic methods,whereas comparable predictions were given for yield heterosis. GRA for yield exhibited slightly higher correlation than genetic identity analysis,with a correlation coefficient of 0.49. GRA and genetic analysis exhibited overlapping yet distinct advantages in heterosis prediction. Therefore,these analytical methods should be integrated to achieve the optimal heterosis prediction and parent selection. 展开更多
关键词 SSR分析 灰色相关 杂种优势预测 杂交 棉花 产量性状 灰色关联分析 简单重复序列
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Analysis on Industry Structure Adjustment and Energy Consumption Based on Grey Theory——A Case Study of Qinghai Province
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作者 ZHANG Yin-ling,WANG Dan-tong,ZHOU Wei School of Land Science and Technology,China University of Geosciences,Beijing 100083,China 《Asian Agricultural Research》 2011年第2期73-75,共3页
In view of the complexity and non-linearity of energy consumption system and the status quo of the development of energy in Qinghai Province,the relations between energy consumption and industrial structure is analyze... In view of the complexity and non-linearity of energy consumption system and the status quo of the development of energy in Qinghai Province,the relations between energy consumption and industrial structure is analyzed by using the quantitative analysis of grey relation degree by using the grey system theory.The relevancy degree among the primary industry,the secondary industry and the tertiary industry and living energy consumption are obtained,and then the trend of energy consumption in the following several years can be predicted.The results show that the secondary industry has the largest relevancy degree to the total energy consumption.In the end,according to the results of the research,several suggestions on how to saving energy are put forward.Firstly,the government should improve the high-tech industry and restrict the development of high-consumption and high-pollution industries.Secondly,the government should promote the low-carbon way of life;promote energy saving and control the energy consumption of the department of life.Thirdly,clean production should be actively promoted in the tertiary industry and the circular economy should be vigorously expanded. 展开更多
关键词 grey relevancy analysis grey correlation DEGREE In
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Grey Relevance Analysis of Major Factors of Energy-Related CO2 Emissions in Tianjin,China
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作者 Zhe Wang Ben Wu +1 位作者 Jianan Wang Liyan Zheng 《环境科学前沿(中英文版)》 2015年第4期104-108,共5页
Energy-related CO2 emissions from Tianjin’s production and household sectors during 2000–2012 were calculated based on the default carbon-emission coefficients provided by the Intergovernmental Panel on Climate Chan... Energy-related CO2 emissions from Tianjin’s production and household sectors during 2000–2012 were calculated based on the default carbon-emission coefficients provided by the Intergovernmental Panel on Climate Change.Grey relational analysis was used in this study to capture the dynamic characteristics of 12 different factors related to CO2 emissions.The results indicated that population scale and structure,industrial structure,per capita disposable income,energy consumption and structure appeared as the main drivers related to the CO2 emissions increase during the study period.Based on the research,we make the policy recommendations including optimizing the industrial structure and energy structure,improving energy efficiency and promoting low-carbon consumption. 展开更多
关键词 CO2 EMISSIONS grey RELATIONAL analysis(gra) TIANJIN
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Regional Economic Vitality Based on Weighted Grey Relational Analysis
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作者 Yi Liu Xiaoyu You Chunshuo Zhang 《Journal of Economic Science Research》 2020年第2期12-18,共7页
The future development of cities has a great relationship with economic vitality.To determine the size of the economic vitality and its main influencing factors.This article takes some cities in China as examples.Firs... The future development of cities has a great relationship with economic vitality.To determine the size of the economic vitality and its main influencing factors.This article takes some cities in China as examples.First,determine the main factors.Aiming at many factors,this paper starts from the perspective of population changes in different cities and changes in corporate vitality.After applying the rough set theory to objectively evaluate index weights,the main factors are screened out.Then,the weights of the corresponding evaluation indexes of each group of cities are calculated by a multiple linear regression to a weighted index system,and then the cities are ranked using the gray correlation analysis method.Finally,we get the ranking of the economic vitality level of different cities.Finally,suggestions are made based on the weighting factors of major factors and economic vitality. 展开更多
关键词 Rough set Time series Weighted grey correlation analysis Economic vitality Influencing factors
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基于PCA-GRA-BK算法的医疗大数据分析 被引量:2
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作者 吴珺 郑欣丽 +1 位作者 朱嘉辉 李天意 《华中师范大学学报(自然科学版)》 CAS CSCD 北大核心 2023年第3期364-372,共9页
随着大数据技术的迅猛发展,健康医疗大数据突破性增长,且具有多源异构、多类型、多关联性.健康医疗大数据也具备特有的5V特征:volume,velocity,variety,value,veracity.然而健康医疗数据的安全问题也随之产生,如何保护病患的隐私数据不... 随着大数据技术的迅猛发展,健康医疗大数据突破性增长,且具有多源异构、多类型、多关联性.健康医疗大数据也具备特有的5V特征:volume,velocity,variety,value,veracity.然而健康医疗数据的安全问题也随之产生,如何保护病患的隐私数据不被泄露成为一项研究热点.该文针对病患隐私保护及其数据分析问题进行研究和探讨,以PCA-GRA Datafly算法为研究对象,为了解决传统算法的QI属性过度泛化的问题及K-means算法的局部最优问题,提出PCA-GRA-BK算法(主成分分析灰度关联分析BiK-means K匿名算法).首先通过PCA算法对医疗数据进行降维分析,利用少量数据揭示医疗数据之间的内在联系,并选择出QI属性;再使用GRA算法对QI属性进行关联度分析,确定与敏感属性的关联度,构建QI属性的泛化层次,使用手肘法确定聚类算法的最佳k值,并通过聚类算法完成健康医疗数据集相似等价类的聚类;最后借助K匿名算法完成对健康医疗数据的匿名化.通过将Datafly算法、PCA-GRA Datafly算法、PCA-GRA-KK算法和PCA-GRA-BK算法进行医疗数据的匿名分析比较发现,在确保数据有效性的前提下,PAC-GRA-BK算法对于数据信息的丢失率明显降低,算法的运行速度也明显提升,进一步证明了该文提出的PAC-GRA-BK算法. 展开更多
关键词 健康医疗大数据 隐私保护 灰度关联分析 属性泛化 PCA-gra-BK算法
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