随着电子商务的迅速发展,B2C电商平台在零售市场中占据了重要地位。尽管平台用户的满意度评估已取得较丰富的成果,但传统的评价方法在权重分配方面仍存在局限性。基于中国顾客满意度指数模型从用户期望、感知质量、感知价值、顾客满意...随着电子商务的迅速发展,B2C电商平台在零售市场中占据了重要地位。尽管平台用户的满意度评估已取得较丰富的成果,但传统的评价方法在权重分配方面仍存在局限性。基于中国顾客满意度指数模型从用户期望、感知质量、感知价值、顾客满意度和顾客忠诚度等五个方面构建评价指标体系;采用可拓优度评价法确定各评价指标的权重并构建B2C电商平台用户满意度的评价模型;利用京东、淘宝和拼多多等三大电商平台的用户满意调查数据验证该评价模型的合理性。With the rapid development of e-commerce, B2C e-commerce platforms have taken a significant position in the retail market. Although substantial progress has been made in evaluating user satisfaction on these platforms, traditional evaluation methods still have limitations in terms of weight distribution. This study constructs an evaluation index system based on the Chinese Customer Satisfaction Index (CCSI) model, covering five aspects: user expectations, perceived quality, perceived value, customer satisfaction, and customer loyalty. The evaluation model of user satisfaction for B2C e-commerce platforms is developed by determining the weight of each evaluation index using the Extension Optimum Degree Evaluation Method. The rationality of this evaluation model is verified using user satisfaction survey data from three major e-commerce platforms: JD.com, Taobao, and Pinduoduo.展开更多
BACKGROUND The effects of viral hepatitis(VH)on type 2 diabetes(T2D)remain controversial.AIM To analyze the causal correlation between different types of VH and T2D using Mendelian randomization(MR).METHODS Single nuc...BACKGROUND The effects of viral hepatitis(VH)on type 2 diabetes(T2D)remain controversial.AIM To analyze the causal correlation between different types of VH and T2D using Mendelian randomization(MR).METHODS Single nucleotide polymorphisms of VH,chronic hepatitis B(CHB),chronic hepatitis C(CHC)and T2D were obtained from the BioBank Japan Project,European Bioinformatics Institute,and FinnGen.Inverse variance weighted,MREgger,and weighted median were used to test exposure-outcome associations.The MR-Egger intercept analysis and Cochran’s Q test were used to assess horizontal pleiotropy and heterogeneity,respectively.Leave-one-out sensitivity analysis was used to evaluate the robustness of the MR analysis results.RESULTS The MR analysis showed no significant causal relationship between VH and T2D in Europeans[odds ratio(OR)=1.028;95%confidence interval(CI):0.995-1.062,P=0.101].There was a negative causal association between CHB and T2D among East Asians(OR=0.949;95%CI:0.931-0.968,P<0.001),while there was no significant causal association between CHC and T2D among East Asians(OR=1.018;95%CI:0.959-1.081,P=0.551).Intercept analysis and Cochran’s Q test showed no horizontal pleiotropy or heterogeneity(P>0.05).Sensitivity analysis showed that the results were robust.CONCLUSION Among East Asians,CHB is associated with a reduced T2D risk,but this association is limited by HBV load and cirrhosis.Although VH among Europeans and CHC among East Asians are not associated with the risk of T2D,focusing on blood glucose in patients with CHC is still relevant for the early detection of T2D induced by CHCmediated pathways of hepatic steatosis,liver fibrosis,and cirrhosis.展开更多
Way back in 1999,twelve volunteers locked themselves in hotel rooms in Beijing,Shanghai,and Guangzhou to participate in a“72-hour network survival experiment.”The goal was to stay in the room for three days and surv...Way back in 1999,twelve volunteers locked themselves in hotel rooms in Beijing,Shanghai,and Guangzhou to participate in a“72-hour network survival experiment.”The goal was to stay in the room for three days and survive on an allowance from the organizer,half in cash and half in electronic form,by purchasing food,bedding.展开更多
文摘随着电子商务的迅速发展,B2C电商平台在零售市场中占据了重要地位。尽管平台用户的满意度评估已取得较丰富的成果,但传统的评价方法在权重分配方面仍存在局限性。基于中国顾客满意度指数模型从用户期望、感知质量、感知价值、顾客满意度和顾客忠诚度等五个方面构建评价指标体系;采用可拓优度评价法确定各评价指标的权重并构建B2C电商平台用户满意度的评价模型;利用京东、淘宝和拼多多等三大电商平台的用户满意调查数据验证该评价模型的合理性。With the rapid development of e-commerce, B2C e-commerce platforms have taken a significant position in the retail market. Although substantial progress has been made in evaluating user satisfaction on these platforms, traditional evaluation methods still have limitations in terms of weight distribution. This study constructs an evaluation index system based on the Chinese Customer Satisfaction Index (CCSI) model, covering five aspects: user expectations, perceived quality, perceived value, customer satisfaction, and customer loyalty. The evaluation model of user satisfaction for B2C e-commerce platforms is developed by determining the weight of each evaluation index using the Extension Optimum Degree Evaluation Method. The rationality of this evaluation model is verified using user satisfaction survey data from three major e-commerce platforms: JD.com, Taobao, and Pinduoduo.
基金Supported by National Natural Science Foundation of China,No.U21A20411.
文摘BACKGROUND The effects of viral hepatitis(VH)on type 2 diabetes(T2D)remain controversial.AIM To analyze the causal correlation between different types of VH and T2D using Mendelian randomization(MR).METHODS Single nucleotide polymorphisms of VH,chronic hepatitis B(CHB),chronic hepatitis C(CHC)and T2D were obtained from the BioBank Japan Project,European Bioinformatics Institute,and FinnGen.Inverse variance weighted,MREgger,and weighted median were used to test exposure-outcome associations.The MR-Egger intercept analysis and Cochran’s Q test were used to assess horizontal pleiotropy and heterogeneity,respectively.Leave-one-out sensitivity analysis was used to evaluate the robustness of the MR analysis results.RESULTS The MR analysis showed no significant causal relationship between VH and T2D in Europeans[odds ratio(OR)=1.028;95%confidence interval(CI):0.995-1.062,P=0.101].There was a negative causal association between CHB and T2D among East Asians(OR=0.949;95%CI:0.931-0.968,P<0.001),while there was no significant causal association between CHC and T2D among East Asians(OR=1.018;95%CI:0.959-1.081,P=0.551).Intercept analysis and Cochran’s Q test showed no horizontal pleiotropy or heterogeneity(P>0.05).Sensitivity analysis showed that the results were robust.CONCLUSION Among East Asians,CHB is associated with a reduced T2D risk,but this association is limited by HBV load and cirrhosis.Although VH among Europeans and CHC among East Asians are not associated with the risk of T2D,focusing on blood glucose in patients with CHC is still relevant for the early detection of T2D induced by CHCmediated pathways of hepatic steatosis,liver fibrosis,and cirrhosis.
文摘Way back in 1999,twelve volunteers locked themselves in hotel rooms in Beijing,Shanghai,and Guangzhou to participate in a“72-hour network survival experiment.”The goal was to stay in the room for three days and survive on an allowance from the organizer,half in cash and half in electronic form,by purchasing food,bedding.
