黄安伦《序曲与舞曲I》“指-腕-肩-腕-指”的演奏处理

钢琴曲《序曲与舞曲》是黄安伦中期创作的代表性作品。笔者通过研究演奏中对“指-腕-肩-腕-指”的转换,探索对该作品音乐结构的宏观控制,以及更好地把握黄安伦钢琴作品的风格和特点。     

Latinas/os succeeding in academia: the effect of mentors and multiethnic coursework

Academia often devalues diverse identities, cultures, and languages through emphasis placed on academic values. To ascertain how established and new Latina/o academics achieved success in academia, the author conducted interviews with ten Latina/o academics; they noted mentoring and multiethnic coursework as influential in their success as academics. The author suggests mentoring practices and multiethnic courses should be receptive and sensitive to the complexities and varieties of cultural and linguistic identities, thereby identifying a balance between recognizing diverse language and cultural practices in academia while avoiding generalizations and assumptions about ethnic groups. The author offers implications for practice and research.     

钢球撞击双层带间隙保护板炸药柱的爆炸分析

采用LS-DYNA3D动力有限元程序对钢球撞击双层带间隙保护板炸药柱的爆炸过程进行了数值模拟分析。分析中采用了流固耦合与动力学接触模式,获得了钢球撞击的临界起爆速度,爆炸产生的峰值压力。研究表明,采取适当的保护措施,炸药制成的部件或装置的安全性能够得到保证。     

STM在Ti表面上的超额微加工

论述了在大气状态下扫描隧道显微STM在Ti表面上的电场加工实验，并对作用机理进行了分析，确定表面结构的生成为准接触和电场诱导氧化的综合作用。     

课堂中交往教学模式的建构策略

交往教学模式有利于培养学生自主学习能力,增进学生的合作学习机会和提高课堂教学效率。阐述了交往教学模式的基本特征及在课堂教学中的运用策略：科学灵活地分组、提高个体责任、创造良好的心理环境。     

村民交际中的人情伦理与互惠原则--上海松江张泽镇村民视野中的礼物馈赠

上海松江张泽镇村民日常生活中的礼物馈赠活动,体现了村民交际中的人情伦理和互惠原则。具体而言,当地流行的礼物馈曾习俗,在村民交际中承载着尽道德义务和表达感情的双重内容;当地至今仍有的制作和保存“喜帐”的民俗事象,这一习俗是村民家庭社交史中重大活动的真实留存,它显示了主人公人际关系网络的总貌;当地还存在“攀过房亲”这一村民交往中的传统习俗,这一习俗造就了乡村社会的一种互惠机制。     

A parametric study on the contact stress of half toroidal continuously variable transmission

1. Introduction A toroidal continuously variable transmission (CVT) that uses a traction drive to transmit torque has a vastly larger torque capacity than a conventional CVT. This transmission technology has attracted considerable interest owing to its capability in substantially improving vehicle fuel economy and power performance [1]. The half toroidal CVT transmits torque by means of shear resistance of the traction fluid film taking advantage of the property of the fluid solidificatio…     

关于接触流形及其辛化

研究了接触流形的性质，它的辛化以及辛流形的接触化．     

一种单列角接触球轴承的设计

角接触球轴承的设计涉及许多结构参数。着重介绍了角接触球轴承的钢球、内外套圈等零件主要参数的确定。基于用户要求,运用ZYB28-98角接触轴承的设计方法,首先确定了所需要的钢球直径和钢球数,并计算了其径向额定负荷。接着详细介绍了内外沟曲率半径、内外圈沟径、内外圈挡边直径等主要参数的计算过程。     

Again: Educational Determinism

Abstract

Pupils learned a German vocabulary task either working in pairs or working alone. Those working in pairs could either assume a teacher role, a pupil role, or alternate these roles. The time taken to undertake the task was measured and achievement was appraised by means of an achievement test. Thus it was possible to estimate the amount of learning per unit of time. The latter is a measure of efficiency of learning. Those who worked alone tended to learn more per unit of time than those who worked in pairs. Subjects showed an increase in efficiency from the fourth to the sixth grade.