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31.
本文通过对2F4.8制冷压缩机热力过程的计算机模拟,获得气阀参数对压缩机热力性能影响的数据资料,以改进气阀结构。经过试验证明,可提高压缩机制冷量和性能系数10%以上。 相似文献
32.
我国风险投资体系存在着风险投资规模偏小、资金来源不足、风险投资运作不规范、缺乏优秀的风险投资人才等诸多问题,严重制约着我国风险投资事业的发展。要通过完善风险投资组织体系、构建风险投资市场体系、培育风险投资人才等措施来完善风险投资体系。 相似文献
33.
刘宝军 《辽宁工学院学报(社会科学版)》2003,5(1):63-64
如今中国加入世贸组织 ,中外文化在一种更加复杂和多元化的时代更深入地“亲密接触”已是有目共睹的事实 ,不同文化之间的相互影响、渗透甚至融合十分必要。因此 ,入世后中国传统文化究竟如何实现面向世界、面向未来、面向现代化的转变是我们急待解决的问题。解决这个问题的最佳解决方案是既应中西融会 ,但更要立足本土。 相似文献
34.
鲍鲂 《新疆石油教育学院学报》2007,9(1):81-82
在班级的教育管理中,以"学"代"管"是抓住了矛盾的主要方面,解决了主要矛盾,班级管理中的其它矛盾也就迎刃而解。 相似文献
35.
Maureen Benson-Rea Stephen Rawlinson 《International migration (Geneva, Switzerland)》2003,41(2):59-79
This paper reports on a research programme that has investigated the migration experiences of highly skilled professional and business migrants to New Zealand. Over a four‐year period, five separate studies have been conducted on the stages in the process of migration. The paper sets out a model of the stages of the migration process and the data and analysis which it has guided. Of particular interest are the information sources available to potential migrants and employers, the cultural sensitivity of settlement processes and the migrants' subsequent ease of access to the labour market. The paper analyses information flows available to migrants at crucial phases in the migration process based on a stages model of the migration process. The model indicates some of the critical steps, interactions, and decisions in the migration process from the individual's point of view. Crucial information gaps are identified and implications are drawn for actors involved at the different stages. 相似文献
36.
This article presents the results of a study conducted with 243 Native American students who were part of a multi-ethnic sample of adolescents attending middle school in a large urban center in the Southwest region of the United States. Native adolescents who felt a stronger sense of belonging in their school were found to report a lower lifetime use of alcohol and cigarettes, lower cigarette and marijuana use in the previous month, lower frequency of current use of these substances, fewer substances ever used, and a later age of initiation into drug use than other Native students. Research implications are discussed in relationship to school environment, culturally-grounded prevention curricula, and school social work practice. 相似文献
37.
近年来 ,中国城市建筑火灾发生率呈上升趋势 ,仅 1999年 ,全国共发生建筑火灾 18万起 ,比前一年增长 4 1% ;死亡 2 70 0多人 ,比前一年增长 15 % ,直接经济损失多达 14亿元。 相似文献
38.
Parental choice of school is one of the main platforms of government education policy and is the centre piece of the Parents Charter. But sociological understanding of choice and choice-making is woefully underdeveloped. This paper draws on an ESRC study of market forces in education to explore social class variations in choice of school in one specific locality. The complexity of choice-making is portrayed using data from interviews with parents and it is argued that middle-class parents are taking full advantage of ‘the market’ to sustain or re-assert their class advantages. 相似文献
39.
宗教社会学范式及理论的新进展 总被引:1,自引:0,他引:1
斯蒂芬.沃讷 《中国人民大学学报》2006,(6)
20世纪90年代以后,宗教社会学领域出现了新的理论范式。新范式是理解美国宗教的框架,旧范式则来源于欧洲的宗教传统。新范式的内容包括理性选择理论、似真性理论和仪式理论。目前,新范式开始运用于中国、印度等国家的宗教研究,似乎要成为普世性的理论模式。 相似文献
40.
Arising as a powerful challenge to programmatic views of sociology that sought to determine stable laws underpinning social order, ethnomethodology set out an alternative programme to reveal social order as a dynamic, contingent ‘ongoing accomplishment’. This programme was neither micro nor macro, but was concerned with different contexts of accountability in which both individuals and institutions are given identity and reproduced. Recognising everyday life as an achievement, collective sense making, and the central importance of talk as a social process, ethnomethodology had an impact on all those arenas of sociology where ordinary interaction is an element. This introduction to the special section discusses the contributions of each of the papers – which cover mundane reasoning, social learning, the early acquisition of social competence, and the application of membership categorization analysis to gender – in relation to the continuing relevance of Garfinkel's legacy to contemporary sociological theory and practice. 相似文献