In this study,issues concerning the design of scales for measuring teacher sense of efficacy(TSE)are first identified with particular attention to the Teacher Sense of Efficacy Scale(TSES).Psychometric issues concerni...In this study,issues concerning the design of scales for measuring teacher sense of efficacy(TSE)are first identified with particular attention to the Teacher Sense of Efficacy Scale(TSES).Psychometric issues concerning analysis and reporting of TSE data are subsequently identified.Recommendations are offered about all identified issues,and these recommendations are taken into account when obtaining and analyzing TSE data from Chinese mainland preservice and inservice teachers.Exploratory factor analyses yielded a single factor for both samples as well as for four subgroups within the inservice teacher sample.Results also provided insights about scale design as well as the TSES being limited for capturing the breadth of TSE.Suggestions are made for improvements in the assessment of TSE.展开更多
The paper puts forward a method on controlling the AM-OLED panel to display image with high gray scale levels. It also gives an ASIC design sample to implement this method. A twenty sub-fields scan scheme has been tak...The paper puts forward a method on controlling the AM-OLED panel to display image with high gray scale levels. It also gives an ASIC design sample to implement this method. A twenty sub-fields scan scheme has been taken into use in the chip to display 256 gray scale levels on a QVGA resolution AM-OLED display screen. The functions of image scaling and rotating have also been implemented for multiply application. The simulation and chip test result show that the chip design has met the design requirements.展开更多
Background: Promoting breastfeeding support by public health nurses (PHN) requires first that the support which they currently provide to be assessed. However, there is no assessment tool for this purpose. The aim of ...Background: Promoting breastfeeding support by public health nurses (PHN) requires first that the support which they currently provide to be assessed. However, there is no assessment tool for this purpose. The aim of this study was therefore to develop a scale to assess breastfeeding support currently provided by PHN. Methods: We developed the Practice of Breastfeeding Support Scale (PBSS) for PHN based on the results of a previous study. The content validity of the PBSS was established through discussion with three other researchers. A pilot study was conducted to confirm face validity. To confirm reliability and validity, an anonymous, self-reported questionnaire was sent to PHN working in municipal offices. The statistical analyses included the Kaiser-Meyer-Olkin (KMO), Barlett’s Test of Sphericity, exploratory factor analysis (EFA), Cronbach’s alpha and correlation coefficient. Results: 768 PHN participated in this study. Cronbach’s alpha of PBSS was 0.85. The KMO measure was 0.892, and Bartlett’s Test of Sphericity was p Conclusion: The reliability and validity of PBSS were confirmed. These findings suggested that the PBSS has the potential to help promote breastfeeding support by PHN by clarifying their current breastfeeding support practices and related factors.展开更多
目的了解国外公园绿地服务设计研究热点和趋势,为我国服务设计介入城市公园绿地服务质量改进提供理论指导和建议。方法系统检索Web of Science核心合集数据库、Scopus、Embase、Ebsco、Science Direct、EI Compendex等6个数据库中公园...目的了解国外公园绿地服务设计研究热点和趋势,为我国服务设计介入城市公园绿地服务质量改进提供理论指导和建议。方法系统检索Web of Science核心合集数据库、Scopus、Embase、Ebsco、Science Direct、EI Compendex等6个数据库中公园绿地和服务设计相关文献,使用Bicomb软件进行关键词词频统计并构建词篇矩阵和共现矩阵,使用SPSS进行关键词聚类挖掘研究热点并进一步通过多维尺度分析了解热点之间的影响关系、识别潜力节点、探索未来发展趋势。结果共检索相关文献360篇,系统聚类结果表明国外公园绿地服务设计研究围绕公园绿地的环境保护和社会效益、以用户体验为中心的服务设计理论与运用、多元主体视角下公园绿地的包容性与公平性、利益相关者参与的可持续环境共创四大热点议题展开,多维尺度分析结果表明四大议题处于不同研究地位与发展阶段。结论未来公园绿地的服务设计研究应当致力于推动生态系统服务与效益共生、推进服务设计理论顶层设计和实践探索、强化公平性评估与协同设计体系,以及深化跨学科融合与数字化技术介入。展开更多
The study of the parameters＇ distribution along the channel axis in a stationary plasma thruster（SPT） helps One to understand the physical characteristics of the SPT＇s operation. In this paper, the axial distribut...The study of the parameters＇ distribution along the channel axis in a stationary plasma thruster（SPT） helps One to understand the physical characteristics of the SPT＇s operation. In this paper, the axial distribution of the desired SPT parameters are predicted by combining the improved scaling theory and a one-dimensional hybrid model. The simulation indicates that the SPT parameters＇ distribution along the channel axis changes with scaling index variable ~. If ~ is set properly, the similarity of the parameters~ axial distribution between the model and a desired thruster can be ensured. In addition, the operation characteristics of the desired thruster, such as the ionization and acceleration processes, are also similar to those of the model. When ζ is set, the improved SPT scaling theory and the one-dimensional hybrid model can be used to predict the axial distribution of the desired SPT parameters with the same propellant （such as Xe）.展开更多
文摘In this study,issues concerning the design of scales for measuring teacher sense of efficacy(TSE)are first identified with particular attention to the Teacher Sense of Efficacy Scale(TSES).Psychometric issues concerning analysis and reporting of TSE data are subsequently identified.Recommendations are offered about all identified issues,and these recommendations are taken into account when obtaining and analyzing TSE data from Chinese mainland preservice and inservice teachers.Exploratory factor analyses yielded a single factor for both samples as well as for four subgroups within the inservice teacher sample.Results also provided insights about scale design as well as the TSES being limited for capturing the breadth of TSE.Suggestions are made for improvements in the assessment of TSE.
基金Project supported by the Science and Technology Commission of Shanghai Municipality(Grant No.09530708600)the Shanghai AM Foundation(Grant No.09700714000)
文摘The paper puts forward a method on controlling the AM-OLED panel to display image with high gray scale levels. It also gives an ASIC design sample to implement this method. A twenty sub-fields scan scheme has been taken into use in the chip to display 256 gray scale levels on a QVGA resolution AM-OLED display screen. The functions of image scaling and rotating have also been implemented for multiply application. The simulation and chip test result show that the chip design has met the design requirements.
文摘Background: Promoting breastfeeding support by public health nurses (PHN) requires first that the support which they currently provide to be assessed. However, there is no assessment tool for this purpose. The aim of this study was therefore to develop a scale to assess breastfeeding support currently provided by PHN. Methods: We developed the Practice of Breastfeeding Support Scale (PBSS) for PHN based on the results of a previous study. The content validity of the PBSS was established through discussion with three other researchers. A pilot study was conducted to confirm face validity. To confirm reliability and validity, an anonymous, self-reported questionnaire was sent to PHN working in municipal offices. The statistical analyses included the Kaiser-Meyer-Olkin (KMO), Barlett’s Test of Sphericity, exploratory factor analysis (EFA), Cronbach’s alpha and correlation coefficient. Results: 768 PHN participated in this study. Cronbach’s alpha of PBSS was 0.85. The KMO measure was 0.892, and Bartlett’s Test of Sphericity was p Conclusion: The reliability and validity of PBSS were confirmed. These findings suggested that the PBSS has the potential to help promote breastfeeding support by PHN by clarifying their current breastfeeding support practices and related factors.
文摘目的了解国外公园绿地服务设计研究热点和趋势,为我国服务设计介入城市公园绿地服务质量改进提供理论指导和建议。方法系统检索Web of Science核心合集数据库、Scopus、Embase、Ebsco、Science Direct、EI Compendex等6个数据库中公园绿地和服务设计相关文献,使用Bicomb软件进行关键词词频统计并构建词篇矩阵和共现矩阵,使用SPSS进行关键词聚类挖掘研究热点并进一步通过多维尺度分析了解热点之间的影响关系、识别潜力节点、探索未来发展趋势。结果共检索相关文献360篇,系统聚类结果表明国外公园绿地服务设计研究围绕公园绿地的环境保护和社会效益、以用户体验为中心的服务设计理论与运用、多元主体视角下公园绿地的包容性与公平性、利益相关者参与的可持续环境共创四大热点议题展开,多维尺度分析结果表明四大议题处于不同研究地位与发展阶段。结论未来公园绿地的服务设计研究应当致力于推动生态系统服务与效益共生、推进服务设计理论顶层设计和实践探索、强化公平性评估与协同设计体系,以及深化跨学科融合与数字化技术介入。
基金supported by National Fundamental Science Research Grant(No.K1403060719)
文摘The study of the parameters＇ distribution along the channel axis in a stationary plasma thruster（SPT） helps One to understand the physical characteristics of the SPT＇s operation. In this paper, the axial distribution of the desired SPT parameters are predicted by combining the improved scaling theory and a one-dimensional hybrid model. The simulation indicates that the SPT parameters＇ distribution along the channel axis changes with scaling index variable ~. If ~ is set properly, the similarity of the parameters~ axial distribution between the model and a desired thruster can be ensured. In addition, the operation characteristics of the desired thruster, such as the ionization and acceleration processes, are also similar to those of the model. When ζ is set, the improved SPT scaling theory and the one-dimensional hybrid model can be used to predict the axial distribution of the desired SPT parameters with the same propellant （such as Xe）.
