目的编制突发公共卫生事件视域下青少年健康素养评价量表(adolescent health literacy evaluation scale under public health emergencies,AHLES-PHE)并检测其在初中生中应用的信效度。方法结合突发公共卫生事件及青少年健康素养特点形...目的编制突发公共卫生事件视域下青少年健康素养评价量表(adolescent health literacy evaluation scale under public health emergencies,AHLES-PHE)并检测其在初中生中应用的信效度。方法结合突发公共卫生事件及青少年健康素养特点形成AHLES-PHE初始版,经两轮Delphi专家征询形成AHLES-PHE专家版,对1729名初中生中进行测试,通过项目分析和因子分析(结构效度)形成AHLES-PHE正式版。AHLES-PHE正式版内容效度用专家法和敏感性分析评估,检测其与日常健康信息素养自评问卷(everyday health information literacy,EHIL)关联效度,计算内部一致性信度、奇偶分半信度及重测信度。结果(1)项目分析:AHLES-PHE专家版各条目得分与总分的相关系数在0.420~0.722之间(P<0.01),决断值CR在10.140~66.980之间(P<0.01)。(2)效度分析:探索性因子分析得出45条目和8因子的AHLES-PHE正式版,8因子可解释总变异的61.30%,验证性因子分析模型拟合指标为χ^(2)/df=3.325、RMSEA=0.052、GFI=0.853、CFI=0.912、TLI=0.904、NFI=0.880;敏感性分析Cronbach’sα系数范围为0.957~0.958,AHLES-PHE正式版总分与EHIL总分相关系数r值为0.340(P<0.01)。(3)信度分析:AHLES-PHE正式版总量表的内部一致性Cronbach’sα系数、分半信度Spearman-Brown系数分别为0.958和0.975,总量表的重测信度ICC值为0.753(P<0.01)。结论该研究编制的AHLES-PHE正式版具有较好的信度、结构效度及内容效度,与EHIL关联效度一般,该量表在突发公共卫生事件视域下对初中生健康素养评测有一定的适用性。展开更多
Soil erosion on highway side-slope has been recognized as a cause of environmental damage and a potential threat to road embankments in the high-altitude permafrost regions.To assess the risk to roads and to protect t...Soil erosion on highway side-slope has been recognized as a cause of environmental damage and a potential threat to road embankments in the high-altitude permafrost regions.To assess the risk to roads and to protect them effectively,it is crucial to clarify the mechanisms governing roadside erosion.However,the cold climate and extremely vulnerable environment under permafrost conditions may result in a unique process of roadside erosion,which differs from the results of current studies conducted at lower altitudes.In this study,a field survey was conducted to investigate side-slope rill erosion along the permafrost section of a highway on the Qinghai‒Tibet Plateau of China.Variations in erosion rates have been revealed,and intense erosion risks(with an average erosion rate of 13.05 kg/m^(2)/a)have been identified on the northern side of the Tanggula Mountains.In the case of individual rills,the detailed rill morphology data indicate that the rill heads are generally close to the slope top and that erosion predominantly occurs in the upper parts of highway slopes,as they are affected by road surface runoff.In the road segment scale,the Pearson correlation and principal component analysis results revealed that the protective effect of vegetation,which was influenced by precipitation,was greater than the erosive effect of precipitation on roadside erosion.A random forest model was then adopted to quantify the importance of influencing factors,and the slope gradient was identified as the most significant factor,with a value of 0.474.Accordingly,the integrated slope and slope length index(L0.5S2)proved to be a reliable predictor,and a comprehensive model was built for highway side-slope rill erosion prediction(model efficiency=0.802).These results could be helpful for highway side-slope conservation and ecological risk prediction in alpine permafrost areas.展开更多
文摘目的编制突发公共卫生事件视域下青少年健康素养评价量表(adolescent health literacy evaluation scale under public health emergencies,AHLES-PHE)并检测其在初中生中应用的信效度。方法结合突发公共卫生事件及青少年健康素养特点形成AHLES-PHE初始版,经两轮Delphi专家征询形成AHLES-PHE专家版,对1729名初中生中进行测试,通过项目分析和因子分析(结构效度)形成AHLES-PHE正式版。AHLES-PHE正式版内容效度用专家法和敏感性分析评估,检测其与日常健康信息素养自评问卷(everyday health information literacy,EHIL)关联效度,计算内部一致性信度、奇偶分半信度及重测信度。结果(1)项目分析:AHLES-PHE专家版各条目得分与总分的相关系数在0.420~0.722之间(P<0.01),决断值CR在10.140~66.980之间(P<0.01)。(2)效度分析:探索性因子分析得出45条目和8因子的AHLES-PHE正式版,8因子可解释总变异的61.30%,验证性因子分析模型拟合指标为χ^(2)/df=3.325、RMSEA=0.052、GFI=0.853、CFI=0.912、TLI=0.904、NFI=0.880;敏感性分析Cronbach’sα系数范围为0.957~0.958,AHLES-PHE正式版总分与EHIL总分相关系数r值为0.340(P<0.01)。(3)信度分析:AHLES-PHE正式版总量表的内部一致性Cronbach’sα系数、分半信度Spearman-Brown系数分别为0.958和0.975,总量表的重测信度ICC值为0.753(P<0.01)。结论该研究编制的AHLES-PHE正式版具有较好的信度、结构效度及内容效度,与EHIL关联效度一般,该量表在突发公共卫生事件视域下对初中生健康素养评测有一定的适用性。
基金funded by the Second Tibetan Plateau Scientific Expedition and Research(STEP),grant number 2021QZKK0203the National Key Research and Development Program of China,grant number 2021YFB2600105.
文摘Soil erosion on highway side-slope has been recognized as a cause of environmental damage and a potential threat to road embankments in the high-altitude permafrost regions.To assess the risk to roads and to protect them effectively,it is crucial to clarify the mechanisms governing roadside erosion.However,the cold climate and extremely vulnerable environment under permafrost conditions may result in a unique process of roadside erosion,which differs from the results of current studies conducted at lower altitudes.In this study,a field survey was conducted to investigate side-slope rill erosion along the permafrost section of a highway on the Qinghai‒Tibet Plateau of China.Variations in erosion rates have been revealed,and intense erosion risks(with an average erosion rate of 13.05 kg/m^(2)/a)have been identified on the northern side of the Tanggula Mountains.In the case of individual rills,the detailed rill morphology data indicate that the rill heads are generally close to the slope top and that erosion predominantly occurs in the upper parts of highway slopes,as they are affected by road surface runoff.In the road segment scale,the Pearson correlation and principal component analysis results revealed that the protective effect of vegetation,which was influenced by precipitation,was greater than the erosive effect of precipitation on roadside erosion.A random forest model was then adopted to quantify the importance of influencing factors,and the slope gradient was identified as the most significant factor,with a value of 0.474.Accordingly,the integrated slope and slope length index(L0.5S2)proved to be a reliable predictor,and a comprehensive model was built for highway side-slope rill erosion prediction(model efficiency=0.802).These results could be helpful for highway side-slope conservation and ecological risk prediction in alpine permafrost areas.
