《说文解字》人体义域形声字本义与源义关系举隅

文章选取《说文》中6个表示人体名称的形声字,从该字的源义素是声符字的本义和源义、引申义和假借义三个方面,通过声符系联,得出各个字本义与源义之间的关系,力图为科学汉语字源学的建立提供经过系统整理的文献材料和论证阐释的途径。     

Aggregate gradation design of asphalt mixture with stone-to-stone contact based on fuller＇s model

Based on Fuller＇s model, a gradation design is presented for the load-carrying capacity of an asphalt mixture with stone-to-stone contact. The coarse aggregate gradation, fine aggregate and filler gradation are respectively designed for their different effects on an asphalt mixture with stone-to-stone contact. The equation of coarse aggregate gradation is deduced from the Fuller＇s model. Fine aggregate gradation is calculated by using Fuller＇s equation. The asphalt mixture with the 16 mm maximum size of aggregate is verified. When the coefficient of coarse aggregate gradation is 0.35 and fine aggregate gradation is 0.25, the volume parameters of asphalt mixture meet the technical specifications. Moreover, the high temperature stability and crack resistance at low temperature are all well.     

Aggregate gradation design of asphalt mixture with stone-to-stone contact based on fuller's model

Based on Fuller's model, a gradation design is presented for the load-carrying capacity of an asphalt mixture with stone-to-stone contact. The coarse aggregate gradation, fine aggregate and filler gradation are respectively designed for their different effects on an asphalt mixture with stone-to-stone contact. The equation of coarse aggregate gradation is deduced from the Fuller's model. Fine aggregate gradation is calculated by using Fuller's equation. The asphalt mixture with the 16 mm maximum size of aggregate is verified. When the coefficient of coarse aggregate gradation is 0.35 and fine aggregate gradation is 0.25, the volume parameters of asphalt mixture meet the technical specifications. Moreover, the high temperature stability and crack resistance at low temperature are all well.     

重庆忠县石宝方言的语音系统及其特点

重庆忠县石宝方言是三峡移民的原居地方言,石宝方言属于西南官话,石宝方言在语音上的特点是:古全浊声母现在读塞音、塞檫音的时候,平声一律读送气清音,仄声一律读不送气清音,古代泥来母字相混;尖音团音不分;没有舌尖前音和舌尖后音的对立;平分阴阳,浊上归去,入声塞音韵尾消失,但保留入声调类。     

语言接触下的“广式普通话”分析

改革开放以来,广州话和普通话的接触日益加强,产生了一种由广州话向普通话过渡的过渡语——“广式普通话”,即带有广州话特点的普通话。语言接触对语言的语音、词汇和语法的演变有一定的影响,“广式普通话”在词汇语法方面受到的影响尤为明显,而对受到广州话干扰而产生的“广式普通话”的分析,对语言规范工作意义重大。     

The rural-urban divide,intergroup relations,and social identity formation of rural migrant children in a Chinese urban school

Through ethnographic fieldwork conducted at a Beijing public school, this study aims to investigate how rural migrant children in China negotiate and construct their identity vis-à-vis the school’s local children. Building on social identity theory, this study reveals that rural migrant children develop a strong non-local group identity as a response to the Hukou-based social policy and the occupation-based social hierarchies in contemporary China. Such an identity helps migrant children combat a sense of inferiority that is reinforced by their daily interactions with the socially and economically more advantaged urban peers. However, this group-based identity forestalls intergroup contact and prevents the migrant children from successfully integrating into Chinese urban society.     

从中国与国际奥委会的交往看一个中国的原则

维护一个中国的原则,谨防任何可能出现"两个中国"或"一中一台"的局面,是中国人民在国际民间事务交往中处理涉台问题的根本立场。国际奥委会作为非政府间的国际组织,中国在1922年就与其建立了直接联系。但在新中国成立后不久,由于国际奥委会在布伦代奇的操纵下,企图凭借这一国际体育组织,玩弄"两个中国"的政治阴谋,致使新中国与国际奥委会的交往经历了一段曲折的过程。这一过程体现了中国人民捍卫一个中国原则的坚定立场。     

职业教育中学生的能力培养研究

当代大学生的能力包括认知能力、操作能力和社交能力三种,我们通过分析教学过程中知识、技能和能力之间的关系,提出了通过知识传授培养学生认知能力和社交能力、通过技能训练培养学生实践操作能力的方法和途径,提高了学生适应各种不同工作岗位的综合素质,增强了学生从容面对新岗位、新问题挑战的自信。     

薄壁四点接触球轴承配合接触特性有限元分析

在实际情况下,薄壁四点轴承与轴承座、轴的配合对薄壁轴承载荷分布、承载能力、轴承刚度有着很大影响。建立腕关节薄壁四点接触球轴承—基座—空心轴构成的轴承系统有限元模型以模拟轴承配合,从而选择最佳配合模型,对实际情况下的轴承配合具有指导意义。基于 ANSYS 有限元软件建立薄壁四点接触轴承不同配合的有限元模型,通过对不同配合模型接触特性进行有限元分析,得出薄壁四点接触球轴承较为精确的椭圆接触区域形状和四点接触状态。对于轴承配合模型 H7 在内外套圈与空心轴及基座接触时有明显应力集中现象,由于轴承滚珠并非在侧面对称,导致轴承与基座及空心轴在靠近滚珠的一边出现应力集中情况。对不同配合的有限元模型进行静态接触特性分析,发现各轴承配合整体等效应力最大值、外圈等效应力最大值、接触应力最大值、基座等效应力最大值区别不大,选择 K7/j7 的轴承配合模型才能使轴承内圈与空心轴的最大等效应力最小。计算结果较为精确地模拟了薄壁四点接触球轴承的接触特性和载荷分布规律,对于实际情况下轴承装配具有一定指导意义。     

Tackle and impact detection in elite Australian football using wearable microsensor technology

Abstract

The effectiveness of a wearable microsensor device (MinimaxX^TM S4, Catapult Innovations, Melbourne, VIC, Australia) to automatically detect tackles and impact events in elite Australian football (AF) was assessed during four matches. Video observation was used as the criterion measure. A total of 352 tackles were observed, with 78% correctly detected as tackles by the manufacturer’s software. Tackles against (i.e. tackled by an opponent) were more accurately detected than tackles made (90% v 66%). Of the 77 tackles that were not detected at all, the majority (74%) were categorised as low-intensity. In contrast, a total of 1510 “tackle” events were detected, with only 18% of these verified as tackles. A further 57% were from contested ball situations involving player contact. The remaining 25% were in general play where no contact was evident; these were significantly lower in peak Player Load? than those involving player contact (P < 0.01). The tackle detection algorithm, developed primarily for rugby, was not suitable for tackle detection in AF. The underlying sensor data may have the potential to detect a range of events within contact sports such as AF, yet to do so is a complex task and requires sophisticated sport and event-specific algorithms.