宽禁带WBG(wide band gap)半导体电力电子器件由于其开关频率高、开关速度快、寄生参数大等特点从噪声源头引发了越来越严峻的电磁干扰问题。然而,传统的噪声源研究主要集中在30 MHz传导频段以内,如何评估噪声源在30~300 MHz较高频率范...宽禁带WBG(wide band gap)半导体电力电子器件由于其开关频率高、开关速度快、寄生参数大等特点从噪声源头引发了越来越严峻的电磁干扰问题。然而,传统的噪声源研究主要集中在30 MHz传导频段以内,如何评估噪声源在30~300 MHz较高频率范围内的辐射频段产生的影响仍存在不确定性,因此提出1种改进的WBG器件电磁干扰分析模型,与传统的非对称梯形波电磁干扰模型相比,首次详细考虑了WBG器件的结电容和跨导体的非线性特性,评估了非线性参数对辐射频段噪声的影响,并进一步提出该模型在辐射频段噪声源抑制中的应用。仿真结果验证了所提计算方法的准确性,基于SiC器件的硬件测试结果与理论分析相吻合。展开更多
目的:考察对于不同人格特质的大学生,网络社交使用时间与孤独感的关系。方法:对205名大学生进行线上线下发放问卷的模式进行施测,问卷采用艾森克人格问卷中国成人版,Facebook使用强度量表以及Russell等人编制的UCLA孤独感量表。结果:通...目的:考察对于不同人格特质的大学生,网络社交使用时间与孤独感的关系。方法:对205名大学生进行线上线下发放问卷的模式进行施测,问卷采用艾森克人格问卷中国成人版,Facebook使用强度量表以及Russell等人编制的UCLA孤独感量表。结果:通过数据分析之后发现网络社交强度与孤独感之间呈现负相关,在人格特质上并未找到三者之间的相关。结论:网络社交强度越强,孤独感也随之降低。Purpose: To investigate the relationship between Internet social time and loneliness among college students with different personality traits. Methods: 205 college students were tested with online and offline questionnaires. The questionnaires were Chinese adult version of Eysenck Personality Questionnaire, on Facebook, intensity scale and UCLA loneliness scale compiled by Russell et al. were used. Results: After data analysis, it was found that there was a negative correlation between the intensity of social network and loneliness, and no correlation between the three was found in personality traits. Conclusion: The higher the intensity of social networking, the lower the loneliness.展开更多
目的:界定迷信心理的维度,编制适合我国大学生的迷信心理量表。利用所编制的大学生迷信心理问卷了解大学生迷信心理现状。方法:对274名大学生进行线上线下发放问卷的模式进行施测和修改,采用问卷的信效度进行修订。结果:通过数据分析之...目的:界定迷信心理的维度,编制适合我国大学生的迷信心理量表。利用所编制的大学生迷信心理问卷了解大学生迷信心理现状。方法:对274名大学生进行线上线下发放问卷的模式进行施测和修改,采用问卷的信效度进行修订。结果:通过数据分析之后编制的迷信问卷具有良好的信效度,大学生迷信水平较低。结论:大学生迷信水平低。Purpose: To define the dimension of superstitious psychology and develop a scale of superstitious psychology suitable for Chinese college students. The present situation of college students’ superstitious psychology was studied by using the questionnaire of college students’ superstitious psychology. Methods: 274 college students were tested and modified in the mode of online and offline questionnaires, and the reliability and validity of the questionnaires were revised. Results: The superstition questionnaire compiled by data analysis has good reliability and validity, and the level of superstition of college students is low. Conclusion: College students have low level of superstition.展开更多
文摘宽禁带WBG(wide band gap)半导体电力电子器件由于其开关频率高、开关速度快、寄生参数大等特点从噪声源头引发了越来越严峻的电磁干扰问题。然而,传统的噪声源研究主要集中在30 MHz传导频段以内,如何评估噪声源在30~300 MHz较高频率范围内的辐射频段产生的影响仍存在不确定性,因此提出1种改进的WBG器件电磁干扰分析模型,与传统的非对称梯形波电磁干扰模型相比,首次详细考虑了WBG器件的结电容和跨导体的非线性特性,评估了非线性参数对辐射频段噪声的影响,并进一步提出该模型在辐射频段噪声源抑制中的应用。仿真结果验证了所提计算方法的准确性,基于SiC器件的硬件测试结果与理论分析相吻合。
文摘目的:考察对于不同人格特质的大学生,网络社交使用时间与孤独感的关系。方法:对205名大学生进行线上线下发放问卷的模式进行施测,问卷采用艾森克人格问卷中国成人版,Facebook使用强度量表以及Russell等人编制的UCLA孤独感量表。结果:通过数据分析之后发现网络社交强度与孤独感之间呈现负相关,在人格特质上并未找到三者之间的相关。结论:网络社交强度越强,孤独感也随之降低。Purpose: To investigate the relationship between Internet social time and loneliness among college students with different personality traits. Methods: 205 college students were tested with online and offline questionnaires. The questionnaires were Chinese adult version of Eysenck Personality Questionnaire, on Facebook, intensity scale and UCLA loneliness scale compiled by Russell et al. were used. Results: After data analysis, it was found that there was a negative correlation between the intensity of social network and loneliness, and no correlation between the three was found in personality traits. Conclusion: The higher the intensity of social networking, the lower the loneliness.
文摘目的:界定迷信心理的维度,编制适合我国大学生的迷信心理量表。利用所编制的大学生迷信心理问卷了解大学生迷信心理现状。方法:对274名大学生进行线上线下发放问卷的模式进行施测和修改,采用问卷的信效度进行修订。结果:通过数据分析之后编制的迷信问卷具有良好的信效度,大学生迷信水平较低。结论:大学生迷信水平低。Purpose: To define the dimension of superstitious psychology and develop a scale of superstitious psychology suitable for Chinese college students. The present situation of college students’ superstitious psychology was studied by using the questionnaire of college students’ superstitious psychology. Methods: 274 college students were tested and modified in the mode of online and offline questionnaires, and the reliability and validity of the questionnaires were revised. Results: The superstition questionnaire compiled by data analysis has good reliability and validity, and the level of superstition of college students is low. Conclusion: College students have low level of superstition.
