Background:Emerging adulthood is a critical period for ego identity exploration and consolidation,and self-presentation on social media constitutes a salient online context for this developmental process.However,limit...Background:Emerging adulthood is a critical period for ego identity exploration and consolidation,and self-presentation on social media constitutes a salient online context for this developmental process.However,limited research has explored the associations between self-presentation on WeChat Moments and ego identity.This study aims to examine these associations,focusing on the mediating role of online positive feedback and the moderating role of gender.Methods:Using a three-wave longitudinal design,this study followed 767 Chinese college students(Mean age=18.96 years)through cluster sampling.Participants completed self-report questionnaires assessing self-presentation on WeChat Moments,online positive feedback,and ego identity status.Data analyses were conducted using mediation modeling and multi-group structural equation modeling.Results:Authentic self-presentation was positively associated with identity achievement and negatively associated with identity diffusion,whereas positive self-presentation was linked to higher levels of identity foreclosure.Online positive feedback played a significant mediating role in the associations between self-presentation strategies and identity statuses,and gender differences were observed in this mediating pathway.For both males and females,authentic self-presentation was associated with higher identity achievement through online positive feedback.However,indirect associations with identity foreclosure and diffusion were observed only among females:authentic self-presentation was linked to lower levels,whereas positive self-presentation was linked to higher levels of foreclosure and diffusion through online positive feedback.No comparable indirect associations were detected among males.Conclusions:Online positive feedback is closely linked to self-presentation strategies and ego identity statuses,with these associations varying by gender.展开更多
Chinese Wine Culture influences people’s attitudes toward alcohol.The current study focuses on exploring the main features of a localized digital alcohol consumption intervention mini-program to address the difficult...Chinese Wine Culture influences people’s attitudes toward alcohol.The current study focuses on exploring the main features of a localized digital alcohol consumption intervention mini-program to address the difficulties of abstinence for native drinkers,as a promising way for long-term management of rehabilitation from alcohol use disorder.A mixed-method approach was used in this study.The self-report quantitative questionnaire recruited three groups of participants:89 drinkers,67 drinkers’relatives,and 30 medical staff.The focus group qualitative interview inspected 36 participants’perspectives on the core topics,including 21 drinkers,4 drinkers’relatives,and 11 medical staff.The results of combining the quantitative study and qualitative study indicated that the top difficulties of abstinence for native drinkers are the strong craving from the inside,the environmental influence,and the psychological health status,especially emotional states.Correspondingly,the most desired main features in an alcohol consumption digital intervention tool are the daily track of drinking conditions and craving level,periodic feedback reports that can share with others,and mood improvement training.Moreover,the top factors that influence participants’intention to useecommend the tool are whether the tool is effective,whether the user experience is good,and whether the tool can replenish the deficiency of the current alcohol treatment.Future work needs to balance what patients want and what others around them expect,so that potential users can benefit best from the digital intervention tool in the context of Chinese culture.展开更多
目的探讨北京市老年微信用户的新媒体健康信息使用意愿和行为的影响因素。方法2022年3—4月采用方便抽样法选择北京市≥60岁的老年微信用户为研究对象,通过自我效能理论和整合技术接受与使用理论(the Unified Theory of Acceptance and ...目的探讨北京市老年微信用户的新媒体健康信息使用意愿和行为的影响因素。方法2022年3—4月采用方便抽样法选择北京市≥60岁的老年微信用户为研究对象,通过自我效能理论和整合技术接受与使用理论(the Unified Theory of Acceptance and Use of Technology,UTAUT)编制量表进行问卷调查,量表信效度良好,通过通径分析验证健康信息使用意愿和行为的影响因素。结果共1006名老年微信用户纳入分析,UTAUT各因素和自我效能得分为3.01~4.02(5分制),相应的得分率为60.2%~80.4%,处于及格至中等水平。全部样本的通径分析模型拟合良好,χ2值为4.64,自由度为4,P=0.326,近似误差均方根=0.022,调整拟合优度指数=0.990,对健康信息使用行为、使用意愿和自我效能的解释度分别为31.0%、64.0%和53.0%。绩效期望(β=0.20)、努力期望(β=0.23)、社会影响(β=0.21)和促进因素(β=0.27)均对使用意愿产生直接作用,前两者还通过自我效能间接影响健康信息使用行为(间接效应分别为0.16和0.11)。使用行为的直接影响因素包括使用意愿(β=0.07)、自我效能(β=0.25)和社会影响(β=0.21)。年龄和性别在不同路径上的调节作用不尽相同。结论UTAUT和自我效能可以用来解释老年微信用户的健康信息使用意向和行为,未来通过新媒体开展老年人健康教育,需要通过提高使用价值感并降低使用难度来增强其自我效能感,并进行人群细分,以进一步增强新媒体健康传播效果。展开更多
A machine learning-based APP may quickly and non-destructively evaluate the quality of parameters,such as hardness and anthocyanin content in blue honeysuckle berries(Lonicera caerulea L.,BHB),based on changes in peri...A machine learning-based APP may quickly and non-destructively evaluate the quality of parameters,such as hardness and anthocyanin content in blue honeysuckle berries(Lonicera caerulea L.,BHB),based on changes in pericarp color characteristics.The color feature information of the BHB pericarp was extracted,and the corresponding hardness and anthocyanin content were determined at various growing stages.Correlation analysis of BHB quality indexes was conducted by single and combined components of BHB epidermal color features.The results showed that fruit hardness had a significantly negative correlation with color feature parameter R-G,and its anthocyanin content had a significantly positive correlation with color feature parameter R.Comparing the eight models,random forest(RF)was established to evaluate the hardness and anthocyanin content of BHB according to the correlation between pericarp color features and hardness and anthocyanin content on BHB quality evaluation APP on the WeChat platform.The credibility of APP embedding RF model for evaluating hardness and anthocyanin content in BHB was validated with the determination coefficient of 0.89 and 0.93 in practice.This approach could efficiently and conveniently evaluate the quality indexes of BHB in real time and serve as a technical reference for the detection of quality indicators of other berries using smartphones.展开更多
基金supported by the National Social Science Fund of China(No.23BSH123).
摘要Background:Emerging adulthood is a critical period for ego identity exploration and consolidation,and self-presentation on social media constitutes a salient online context for this developmental process.However,limited research has explored the associations between self-presentation on WeChat Moments and ego identity.This study aims to examine these associations,focusing on the mediating role of online positive feedback and the moderating role of gender.Methods:Using a three-wave longitudinal design,this study followed 767 Chinese college students(Mean age=18.96 years)through cluster sampling.Participants completed self-report questionnaires assessing self-presentation on WeChat Moments,online positive feedback,and ego identity status.Data analyses were conducted using mediation modeling and multi-group structural equation modeling.Results:Authentic self-presentation was positively associated with identity achievement and negatively associated with identity diffusion,whereas positive self-presentation was linked to higher levels of identity foreclosure.Online positive feedback played a significant mediating role in the associations between self-presentation strategies and identity statuses,and gender differences were observed in this mediating pathway.For both males and females,authentic self-presentation was associated with higher identity achievement through online positive feedback.However,indirect associations with identity foreclosure and diffusion were observed only among females:authentic self-presentation was linked to lower levels,whereas positive self-presentation was linked to higher levels of foreclosure and diffusion through online positive feedback.No comparable indirect associations were detected among males.Conclusions:Online positive feedback is closely linked to self-presentation strategies and ego identity statuses,with these associations varying by gender.
基金the National Natural Science Foundation of China(No.82171484)the Interdisciplinary Program of Shanghai Jiao Tong University(No.YG2023ZD25)。
摘要Chinese Wine Culture influences people’s attitudes toward alcohol.The current study focuses on exploring the main features of a localized digital alcohol consumption intervention mini-program to address the difficulties of abstinence for native drinkers,as a promising way for long-term management of rehabilitation from alcohol use disorder.A mixed-method approach was used in this study.The self-report quantitative questionnaire recruited three groups of participants:89 drinkers,67 drinkers’relatives,and 30 medical staff.The focus group qualitative interview inspected 36 participants’perspectives on the core topics,including 21 drinkers,4 drinkers’relatives,and 11 medical staff.The results of combining the quantitative study and qualitative study indicated that the top difficulties of abstinence for native drinkers are the strong craving from the inside,the environmental influence,and the psychological health status,especially emotional states.Correspondingly,the most desired main features in an alcohol consumption digital intervention tool are the daily track of drinking conditions and craving level,periodic feedback reports that can share with others,and mood improvement training.Moreover,the top factors that influence participants’intention to useecommend the tool are whether the tool is effective,whether the user experience is good,and whether the tool can replenish the deficiency of the current alcohol treatment.Future work needs to balance what patients want and what others around them expect,so that potential users can benefit best from the digital intervention tool in the context of Chinese culture.
摘要目的探讨北京市老年微信用户的新媒体健康信息使用意愿和行为的影响因素。方法2022年3—4月采用方便抽样法选择北京市≥60岁的老年微信用户为研究对象,通过自我效能理论和整合技术接受与使用理论(the Unified Theory of Acceptance and Use of Technology,UTAUT)编制量表进行问卷调查,量表信效度良好,通过通径分析验证健康信息使用意愿和行为的影响因素。结果共1006名老年微信用户纳入分析,UTAUT各因素和自我效能得分为3.01~4.02(5分制),相应的得分率为60.2%~80.4%,处于及格至中等水平。全部样本的通径分析模型拟合良好,χ2值为4.64,自由度为4,P=0.326,近似误差均方根=0.022,调整拟合优度指数=0.990,对健康信息使用行为、使用意愿和自我效能的解释度分别为31.0%、64.0%和53.0%。绩效期望(β=0.20)、努力期望(β=0.23)、社会影响(β=0.21)和促进因素(β=0.27)均对使用意愿产生直接作用,前两者还通过自我效能间接影响健康信息使用行为(间接效应分别为0.16和0.11)。使用行为的直接影响因素包括使用意愿(β=0.07)、自我效能(β=0.25)和社会影响(β=0.21)。年龄和性别在不同路径上的调节作用不尽相同。结论UTAUT和自我效能可以用来解释老年微信用户的健康信息使用意向和行为,未来通过新媒体开展老年人健康教育,需要通过提高使用价值感并降低使用难度来增强其自我效能感,并进行人群细分,以进一步增强新媒体健康传播效果。
基金Supported by the National Natural Science Foundation of China(32072352)the National Key Research and Development Program Project of China(2022YFD1600500)。
摘要A machine learning-based APP may quickly and non-destructively evaluate the quality of parameters,such as hardness and anthocyanin content in blue honeysuckle berries(Lonicera caerulea L.,BHB),based on changes in pericarp color characteristics.The color feature information of the BHB pericarp was extracted,and the corresponding hardness and anthocyanin content were determined at various growing stages.Correlation analysis of BHB quality indexes was conducted by single and combined components of BHB epidermal color features.The results showed that fruit hardness had a significantly negative correlation with color feature parameter R-G,and its anthocyanin content had a significantly positive correlation with color feature parameter R.Comparing the eight models,random forest(RF)was established to evaluate the hardness and anthocyanin content of BHB according to the correlation between pericarp color features and hardness and anthocyanin content on BHB quality evaluation APP on the WeChat platform.The credibility of APP embedding RF model for evaluating hardness and anthocyanin content in BHB was validated with the determination coefficient of 0.89 and 0.93 in practice.This approach could efficiently and conveniently evaluate the quality indexes of BHB in real time and serve as a technical reference for the detection of quality indicators of other berries using smartphones.