灵敏度分析和SVM诊断模拟电路故障的方法

针对低可测性模拟电路中存在的模糊组问题,提出了一种模拟电路故障诊断的新方法。该方法首先计算被测电路网络传递函数零极点的灵敏度,利用零极点灵敏度提供的信息来对被测电路进行模糊组的划分,组成可诊断的元件集,并引入了支持向量机完成对故障的分类识别。零极点的灵敏度分析确定了被测电路可诊断的元件组,支持向量机结构简单、泛化能力强,实验结果证明了基于灵敏度分析和支持向量模拟电路故障诊断方法的有效性,故障诊断率大于99%。     

以农民为主体的农业科技传播网络及传播模式创新与实践

农业科技传播是一个系统工程,是把农业新技术从研制者（技术亚系统）通过社会亚系统（农村的干部、男性和女性村民）放大,用在农业生产中（自然生态亚系统）,提高农业生产和品质。因此,科技传播过程中有四个重要的关键环节,即丰富的科技源、流畅的科技流通渠道和社会亚系统的放大,最后到达合适的自然生态中,以达到提高产品质量与数量。所以,提高社会亚系统的放大作用是农业科技传播的关键。基于此,本文概述了国内外农业科技传播的诸多模式及其特点,基于参与式理论、社会性别理论和人力资源管理理论,针对我国农业生产特点,创建了以农民为主体的性别敏感的参与式农业技术传播网络模式,并在实践中得以检验,证明该模式符合中国国情,农业科技传播效率高、效果好,显著提高经济、生态和社会效益,农民特别是农村妇女的自信心和科技素质、参与意识显著提高,农民人均收入和家庭条件显著改变。并开创出一套将该网络持续发展的方法,提出了主流化的建议。     

阿尔及利亚某油田富气混相驱数值模拟研究

混相驱数值模拟是验证室内实验结果以及开展敏感性分析、注入方案优化设计的重要手段。油藏流体模拟和长细管、试验井组的混相模拟结果与室内实验结果较为吻合,确定的液化石油气和天然气最小混相组成MMC(37.1∶62.9)在油藏条件下能达到混相状态,经压力、温度以及注入参数的敏感性分析,在Ⅳ区推荐交替注入方式（周期半年）,累计混相段塞大小0.1PV,注Ⅱ、Ⅲ层;采Ⅰ、Ⅱ、Ⅲ层。     

The Impact of Culture on Equity Sensitivity Perceptions and Organizational Citizenship Behavior: A Five-Country Study

This paper examines the relationships between equity theory, equity sensitivity, and organizational citizenship behavior. Several issues are investigated: whether individuals from different cultures differ in their equity sensitivity orientations; whether individuals from different cultures differ in preference for benevolent, equity sensitive, and entitled situations involving a case scenario; and whether cultural differences impact organizational citizenship behavior.     

Mental disease postpartum and parent‐infant interaction—evaluation of videotaped sessions

In order to investigate the influence of maternal mental illness postpartum on mother‐infant and father‐infant interaction, infants of 14 mentally ill women admitted to hospital within 6 months after delivery were compared to infants of 22 women who had been somatically ill. Videotaped sessions when the infant was 10 months old revealed that mothers in the psychiatric sample showed less sensitivity in comparison to mothers in the somatic sample. When the infant was 2 years old, mothers in the psychiatric sample showed less positive affect and less link‐infant follow (stimulation dimension) as compared to the somatic mothers. However, there were no differences between fathers in the psychiatric sample and fathers in the somatic sample in any of the interaction variables. In the psychiatric sample, fathers showed more warmth as compared to mothers. In the somatic sample, fathers scored higher than mothers on autonomy but lower than mothers on link‐infant follow (stimulation dimension). A possible interpretation of our data was that the mental illness of the mothers may lead to a more active parenting role of the father in order to buffer the deficit in the mother‐infant relation. Copyright © 2001 John Wiley & Sons, Ltd.     

用综合财务指标衡量企业融资约束

投资现金流敏感性是关于企业融资约束研究中普遍采用的方法,但近十年以来对该方法的合理性有越来越多的争议。本论文以kaplan和Zingales的研究为基础,选择中国上市公司样本数据建立用于识别融资约束的综合财务指标评分模型,获得了可信度较高的度量企业融资约束的数值区间。研究结果为识别企业融资约束提供了可用的基本的方法,丰富了企业投资、融资研究和融资约束方面的研究。     

文学阅读与文化语言素质培养

文学深刻地反映现实世界的精华,在中国外语教育的传统中,文学阅读是必不可少的培养学生语言理解能力和文化差异敏感性的主要途径,文学阅读对培养外语人才起到了独特作用,文学阅读必须贯穿外语学习的整个过程。     

关于平均指标灵敏性问题的探讨

从相对影响角度看 ,在极端大值的情况下 ,算术平均数最灵敏 ,几何平均数次之 ,调和平均数最不灵敏 ;在极端小值的情况下 ,算术平均数最不灵敏 ,几何平均数次之 ,调和平均数最灵敏 .从绝对影响角度看 ,在极端大值的情况下 ,算术平均数最灵敏 ;在极端小值的情况下 ,算术平均数最不灵敏 ;几何平均数与调和平均数的灵敏程度关系有待进一步研究     

The Indirect Effect of Child Maltreatment Severity on Adult PTSD Symptoms through Anxiety Sensitivity

Although the rate of posttraumatic stress disorder (PTSD) among survivors of child maltreatment is high, individuals differ in symptom severity and many do not experience clinically significant levels of psychopathology. The present study tested the indirect effects of child maltreatment severity on adult PTSD, suicidal ideations, and alcohol dependence via anxiety sensitivity. A sample of 336 participants (mean age of 22.81 years, SD = 8.93; 70.2% female) completed an online survey of child abuse and neglect, anxiety sensitivity, PTSD symptom severity, suicidal ideation severity, and alcohol dependence severity. The results revealed significant indirect effects of child maltreatment on PTSD symptom severity through cognitive and social concerns, but not physical concerns. No direct or indirect effects were demonstrated for suicidal ideations or alcohol dependence severity. These findings elucidate mechanisms in the robust relationship between child maltreatment and adult PTSD symptoms and can potentially inform future research on mechanisms of change in psychotherapy.     

Multi-ethnic school environment from the school leader’s perspective: challenges and approaches to improve multi-cultural competency among teachers in Malaysia

This study aims to identify the challenges and approaches to improve a multicultural competency among teachers in multi-ethnic schools environment based on school leaders’ perspective. Data collection method used in this study is qualitative method. A total of nine school leaders from the states of Kedah, Penang, and Perak were included in the interview session. The results of this study show that the challenges faced by teachers in practicing the multicultural competency are lack of experience toward cultural diversity. A late exposure to cultural diversity makes it difficult for teachers to accept and adapt in a multi-ethnic school environment. The approaches suggested by school leaders to improve the multicultural competency are as follows: (1) Courses on cultural diversity should be organized to enhance the knowledge about cultural diversity; (2) the development of more open and better policy for education system in Malaysia in order to prepare teachers with a higher multicultural competency for teaching students from diverse ethnic and cultural groups; (3) an early exposure to cultural diversity in order to increase the multicultural competency, especially during teaching practicum.