目的研究杰弗逊共情量表学生版(the Jefferson Scale of Empathy-Student Version,JSE-S)用于测量中国医学专业学生共情水平的信效度并评价其适用性。方法译制中文版JSE-S量表并制作为电子调查问卷,采用方便取样法纳入284名医学生完成...目的研究杰弗逊共情量表学生版(the Jefferson Scale of Empathy-Student Version,JSE-S)用于测量中国医学专业学生共情水平的信效度并评价其适用性。方法译制中文版JSE-S量表并制作为电子调查问卷,采用方便取样法纳入284名医学生完成调查。采用分半信度和内部一致性信度评估量表信度,采用结构效度评估量表效度。结果中文版JSE-S量表的分半信度系数为0.832,内部一致性信度Cronbach sα系数为0.865,4个维度的Cronbach sα系数分别为0.868,0.829,0.695,0.770;结构效度检验显示取样适切性量数(KMO)统计量为0.876,Bartlett s球形检验P<0.001,提取4个公因子后累积方差贡献率为58.349%,因子负荷估计值为0.255~0.832。结论中译版JSE-S量表具有较好的信度和效度,适用于评估中国医学生的共情水平。展开更多
Monitoring tire pressure of cars and signaling abnormal conditions is an important means to prevent deadly accidents. Large achievements have been gained, especially in direct tire pressure monitoring system(TPMS). ...Monitoring tire pressure of cars and signaling abnormal conditions is an important means to prevent deadly accidents. Large achievements have been gained, especially in direct tire pressure monitoring system(TPMS). But there has been rarely research on indirect TPMS in the world. In China, the research on indirect TPMS is almost lacking. The international research on the indirect monitoring tire pressure method is mainly based on measuring and comparing the rotating speed of wheels. But it is very difficult to measure wheel rotating speed accurately because of the influence of many random factors. In this paper, the authors propose a new method in which the tire pressure can be monitored indirectly. This method can be used for tire calibration, wheel speed frequency standardization, wheel speed frequency comparison, and abnormal tire pressure determination. The pulse frequencies from wheel speed sensors of ABS are used to indicate tire deformation. Because the frequency has a relationship with tire deformation, the tire deformation reflects the tire pressure. Small sample statistics is used in the new method to increase the accuracy, and the experimental samples using the principle of the new method have been made and tested. The result of vehicle tests on road demonstrates that the method is efficient and accurate to monitor tire pressure. The research has positive potential for developing products.展开更多
文摘目的研究杰弗逊共情量表学生版(the Jefferson Scale of Empathy-Student Version,JSE-S)用于测量中国医学专业学生共情水平的信效度并评价其适用性。方法译制中文版JSE-S量表并制作为电子调查问卷,采用方便取样法纳入284名医学生完成调查。采用分半信度和内部一致性信度评估量表信度,采用结构效度评估量表效度。结果中文版JSE-S量表的分半信度系数为0.832,内部一致性信度Cronbach sα系数为0.865,4个维度的Cronbach sα系数分别为0.868,0.829,0.695,0.770;结构效度检验显示取样适切性量数(KMO)统计量为0.876,Bartlett s球形检验P<0.001,提取4个公因子后累积方差贡献率为58.349%,因子负荷估计值为0.255~0.832。结论中译版JSE-S量表具有较好的信度和效度,适用于评估中国医学生的共情水平。
基金supported by the Opening Foundation of State Key Laboratory of Automobile Safety and Energy,Tsinghua University,China(Grant No. KF2005-11,Grant No.KF2007-09)
文摘Monitoring tire pressure of cars and signaling abnormal conditions is an important means to prevent deadly accidents. Large achievements have been gained, especially in direct tire pressure monitoring system(TPMS). But there has been rarely research on indirect TPMS in the world. In China, the research on indirect TPMS is almost lacking. The international research on the indirect monitoring tire pressure method is mainly based on measuring and comparing the rotating speed of wheels. But it is very difficult to measure wheel rotating speed accurately because of the influence of many random factors. In this paper, the authors propose a new method in which the tire pressure can be monitored indirectly. This method can be used for tire calibration, wheel speed frequency standardization, wheel speed frequency comparison, and abnormal tire pressure determination. The pulse frequencies from wheel speed sensors of ABS are used to indicate tire deformation. Because the frequency has a relationship with tire deformation, the tire deformation reflects the tire pressure. Small sample statistics is used in the new method to increase the accuracy, and the experimental samples using the principle of the new method have been made and tested. The result of vehicle tests on road demonstrates that the method is efficient and accurate to monitor tire pressure. The research has positive potential for developing products.