Social Networks Sites (SNSs) are dominating all internet users’ generations, especially the students’ communities. Consequently, academic institutions are increasingly using SNSs which leads to emerge a crucial ques...Social Networks Sites (SNSs) are dominating all internet users’ generations, especially the students’ communities. Consequently, academic institutions are increasingly using SNSs which leads to emerge a crucial question regarding the impact of SNSs on students’ academic performance. This research investigates how and to what degree the use of SNSs affects the students’ academic performance. The current research’s data was conducted by using drop and collect surveys on a large population from the University of Jordan. 366 undergraduate students answered the survey from different faculties at the university. In order to study the impact of SNSs on student’s academic performance, the research hypotheses was tested by using descriptive analysis, T-test and ANOVA. Research results showed that there was a significant impact of SNS on the student’s academic performance. Also, there was a significant impact of SNS use per week on the student’s academic performance, whereas no differences found in the impact of use of SNSs on academic performance due to age, academic achievement, and use per day to most used sites. The findings of this research can be used to suggest future strategies in enhancing student’s awareness in efficient time management and better multitasking that can lead to improving study activities and academic achievements.展开更多
From the aspects of time characteristics,spatial characteristics and subjective will of sports activities,the preference of sports venues for the elderly in colleges and universities is investigated through questionna...From the aspects of time characteristics,spatial characteristics and subjective will of sports activities,the preference of sports venues for the elderly in colleges and universities is investigated through questionnaires and interviews,and further analysis and studies are conducted by using the abstract method and discrete selection model,so as to explore the factors affecting the preference of sports venues for the elderly in colleges and universities and their importance.The results show that the factors affecting preference of the elderly in colleges and universities for sports venues from high to low are site greening,site amenities,site shade facilities,site rest seats,site lighting facilities,site size,site fitness and leisure facilities,site walking distance and site quietness degree.Among them,the walking distance of the site is negatively correlated,and the quiet degree of the site has no significant effect,and the other 7 items are positively correlated.The research on the preference of sports venues for the elderly in colleges and universities is helpful to the location and construction of sports venues,so as to provide comfortable and satisfactory sports space for the elderly,which has important practical significance.展开更多
For pseudocapacitive electrode materials(PseEMs),despite much progress having been made in achieving both high power density and high energy density,a general strategy to guide the enhancement of intrinsic capacitive ...For pseudocapacitive electrode materials(PseEMs),despite much progress having been made in achieving both high power density and high energy density,a general strategy to guide the enhancement of intrinsic capacitive properties of PseEMs remains lacking.Here,we demonstrate a universal chargecompensating strategy to improve the charge-storage capability of PseEMs intrinsically:ⅰ) in the electrolyte with anion as charge carriers(such as OH-),reducing the multivalent cations of PseEMs into lower valences could create more reversible low-to-high valence redox cou ples to promote the intercalation of the anions;ⅱ) in the electrolytes with cation as charge carriers(such as H^(+),Li^(+),Na^(+)),oxidizing the multivalent cations of PseEMs into higher valences could introduce more reversible high-to-low valence redox couples to promote the intercalation of the cations.And we demonstrated that the improved intrinsic charge-storage capability for PseEMs originates from the increased Faradaic charge storage sites.展开更多
文摘Social Networks Sites (SNSs) are dominating all internet users’ generations, especially the students’ communities. Consequently, academic institutions are increasingly using SNSs which leads to emerge a crucial question regarding the impact of SNSs on students’ academic performance. This research investigates how and to what degree the use of SNSs affects the students’ academic performance. The current research’s data was conducted by using drop and collect surveys on a large population from the University of Jordan. 366 undergraduate students answered the survey from different faculties at the university. In order to study the impact of SNSs on student’s academic performance, the research hypotheses was tested by using descriptive analysis, T-test and ANOVA. Research results showed that there was a significant impact of SNS on the student’s academic performance. Also, there was a significant impact of SNS use per week on the student’s academic performance, whereas no differences found in the impact of use of SNSs on academic performance due to age, academic achievement, and use per day to most used sites. The findings of this research can be used to suggest future strategies in enhancing student’s awareness in efficient time management and better multitasking that can lead to improving study activities and academic achievements.
文摘From the aspects of time characteristics,spatial characteristics and subjective will of sports activities,the preference of sports venues for the elderly in colleges and universities is investigated through questionnaires and interviews,and further analysis and studies are conducted by using the abstract method and discrete selection model,so as to explore the factors affecting the preference of sports venues for the elderly in colleges and universities and their importance.The results show that the factors affecting preference of the elderly in colleges and universities for sports venues from high to low are site greening,site amenities,site shade facilities,site rest seats,site lighting facilities,site size,site fitness and leisure facilities,site walking distance and site quietness degree.Among them,the walking distance of the site is negatively correlated,and the quiet degree of the site has no significant effect,and the other 7 items are positively correlated.The research on the preference of sports venues for the elderly in colleges and universities is helpful to the location and construction of sports venues,so as to provide comfortable and satisfactory sports space for the elderly,which has important practical significance.
基金supported by the National Natural Science Foundation of China(51972146,52072150)。
文摘For pseudocapacitive electrode materials(PseEMs),despite much progress having been made in achieving both high power density and high energy density,a general strategy to guide the enhancement of intrinsic capacitive properties of PseEMs remains lacking.Here,we demonstrate a universal chargecompensating strategy to improve the charge-storage capability of PseEMs intrinsically:ⅰ) in the electrolyte with anion as charge carriers(such as OH-),reducing the multivalent cations of PseEMs into lower valences could create more reversible low-to-high valence redox cou ples to promote the intercalation of the anions;ⅱ) in the electrolytes with cation as charge carriers(such as H^(+),Li^(+),Na^(+)),oxidizing the multivalent cations of PseEMs into higher valences could introduce more reversible high-to-low valence redox couples to promote the intercalation of the cations.And we demonstrated that the improved intrinsic charge-storage capability for PseEMs originates from the increased Faradaic charge storage sites.
