用位移传感器测量固体材料的杨氏模量

介绍了一种用位移传感器测量固体材料的杨氏模量的方法,是一种学生了解和掌握微小位移的非电量电测方法.     

Excel在物理实验数据处理中的应用研究

以霍尔器件测量磁感应强度实验为例,介绍Excel分析处理物理实验数据的方法。利用Excel处理物理实验数据不仅快捷准确,免除了大量繁杂的运算工作,而且方法简便,结果可视,且可随着输入数据即时更新。经过几年来在物理实验教学当中的应用,表明该方法在实现学生实验数据的管理和分析处理方面非常有效。     

School programs to prevent intrafamilial child sexual abuse

The incidence of child sexual abuse would argue for the schools assuming a larger role in the development of preventive and educational programs. Because of the public school system's consistent and longitudinal contact with children and families it is perhaps the most promising institution for the delivery of preventive efforts. This article presents specific suggestions for school-based programs directed toward the prevention of intrafamilial child sexual abuse. Further, it is argued that for maximum effectiveness, the support of local parent-teacher organizations be elicited; that educational programs be presented separately for parents and children; and that a variety of programs in concert with the development level of participants be presented on topics related to child sexual abuse. Topics regarded as important for prevention efforts are factual information on sexual abuse, appropriate and inappropriate touch, the respective role responsibilities and rights of parents and children, and a sex education approach that stresses the values of nonexploitation and discrimination in the choice of whether to engage in sexual behavior and the choice of partners.     

Sibling interaction: Evidence of a generational effect in maltreating infants

Theorists have long assumed that an individual's style of child-rearing was based, in large part, on his or her parents' style of parenting. The strongest evidence of such a generational effect comes from retrospective studies of disturbed adults. The present study is an attempt to provide some prospective evidence. Infants, aged 6 to 11 months, were videotaped interacting with their mother, with a sibling, and with a second adult. At each sibling age (from 2 to 10 years) one abused, one neglected, one problematic, and one normally reared infant was seen. The adult/sibling patterns of interaction were coded as abusive, neglecting, inept, or sensitive. Infant patterns were difficult, passive, and cooperative. Siblings were found to interact with the infant in a manner similar to that of their mothers suggesting that they had learned their style of interaction from their mothers. Although adequately reared siblings increased in sensitivity with age, maltreated siblings did not. The possibility that infant temperament had influenced both the mothers' and the siblings' style of interaction (and, therefore, accounted for their similarity) was tested using a second adult interactant. Adults were found to influence infants more than the reverse. These data provide evidence of a generational effect in the learning of parenting styles appearing as early as the third year of life. Moreover, they suggest that the effect is not attributable to infant temperament.     

安培力微观本质探讨

对安培力是洛伦兹力的宏观表现的传统说法进行了深入剖析,指明了安培力微观本质是由于洛伦兹力而引起的霍尔电场对磁场中载流导体的晶格正离子施加的电场力的合力.     

CIP-I智能人工腿步速控制系统硬件设计

CIP-I Leg是国内首个智能仿生人工腿原型机。针对智能仿生人工腿应能模仿人体健康腿的运动方式且步行速度可自然、随意地跟随截肢者步行速度的变化而变化的重要特点,同时考虑到高精度、低功耗和抗干扰能力强等,设计了一种基于新型超低功耗微处理器MSP430F149的人工腿步速控制系统硬件电路。实验结果表明,所设计的步速控制系统运行可靠、功耗低、精度高,可有效地用于自行设计的CIP-I Leg的控制。     

霍尔效应及应用

霍尔效应是一种发现、研究和应用都很早的磁电效应。霍尔效应的研究在当今已取得了许多突破性的进展，在科学技术的许多领域都有着广泛的应用。     

咏春拳馆发展现状与对策探析——以武汉市龙睿咏春拳馆为例

为响应国家体育总局武术研究院的号召,文章从拳馆经营入手,通过对中国武汉龙睿咏春拳馆的个案研究,运用文献资料法、访谈法等研究方法,全面分析咏春拳馆的发展现状,并针对现状提出一些对策及建议,以期达到全面推广咏春拳,探寻传统武术更好更快的发展之路,为进一步推动武术运动的发展提供参考依据.