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31.
32.
针对吸硕灯装拆不方便的问题,依据负压原理,设计了一种吸顶灯罩便携拆装器,通过螺旋式吸盘将灯罩吸住旋
转将灯罩取下。同时,设计了内、外杆形式的支撑构件,使得产品满足高空作业要求。应用结果表明装置能有效解决生
活中灯罩清洁难问题,产品制造成本低,易推广和普及。 相似文献
33.
Providing the foster child with a forever family through adoption is often seen as a happy ending to the long and painful journey through foster care. This qualitative study explores this complex journey from foster care to adoption from the perspective of 30 young adults aged 18 to 25 who were adopted from the foster care system after the age of 8. The results indicate that the foster and adoption experience for these youth cannot be compartmentalized when trying to understand the impact adoption has had on their overall sense of self. Implications for future research to explore the emerging concept of foster/adoptive identity for older youth adopted through the foster care system are provided. 相似文献
34.
该项研究宗旨是探索雷州半岛杂交玉米高产制种的可行性及其配套制种技术.经过两年三造的试验研究,其主要经济技术指标达到预期效果.累计面积26 .9 亩.组合为南试847 ,加权平均亩产量为237 .1 kg,最高亩产300.1 kg.根据研究结果,本项目初步总结出了南试847 组合杂交制种配套技术,为指导玉米制种提供了理论依据和实践经验. 相似文献
35.
20世纪80年代的当代中国,官方对于权力过于集中历史教训的反思、西方政治思想领域中分权思想的再次兴起以及中国新闻传媒在实践中的积极探索,推动了"舆论监督"在当代中国的凸显,同时建构起的还有舆论监督的对话渠道、新闻报道和群众批评三大历史语境内涵。作为当代中国新闻传媒的功能,舆论监督的提出,突破了"喉舌论"的新闻传媒的功能定位,建构了新闻传媒监督政治权力的最初合法性,并为此后中国的新闻传媒实践开拓了空间。 相似文献
36.
In this paper, we envisage how the sociohistorical experiences of groups are related to their residential patterns. We posit that the residential clustering of a group can be strongly related to the group's mnemonic institutions, which are organizational symbols of collective identity that link the present to the past. We present the case of Jewish residential clustering patterns in Toronto to demonstrate our arguments. We employ 2001 Canadian Census tract‐level data to show Jewish residential clustering patterns in relation to the presence of a synagogue or Jewish community center, the mnemonic institutions of Jews. 相似文献
37.
曹友义 《重庆大学学报(社会科学版)》2014,20(6):212-216
文章通过解释支架式教育理论的起源和定义,分析支架式教育策略的步骤及其特点,以及分析语言学习策略培训的特点和模型,讨论了支架式教育理论对语言学习策略培训的影响,用英语语言学习过程中支架教育策略的实际运用论证支架式教育理论的重要性和影响力。 相似文献
38.
This study addresses two questions. First, among the three major perspectives on integration (i.e., zero‐sum, pluralist, and selective integration) suggested in the literature, which is the dominant pattern of the participation level in informal social activities in the ethnic community and in the wider society among new immigrant groups? Second, how well do the factors suggested by these three perspectives explain these patterns? Based on recently collected data about Chinese immigrants in Toronto, Canada, the analyses suggest that nearly half the respondents claim a low level of social participation. Among those who do participate, the pluralist integration pattern is the dominant pattern of participation in informal social activities among today's Chinese immigrants. Though the analysis shows the consistent effect of human capital resources on the pluralist integration patterns, there is no significant effect of either human capital resources or duration in the country on the zero‐sum and selective patterns. Implications of the results are discussed. 相似文献
39.
Diane Masuo Grace Fong John Yanagida Carol Cabal 《Journal of Family and Economic Issues》2001,22(1):55-73
The purposes of this article are: (1) to identify internal/micro-level factors associated with perception of family and business success, and (2) to compare single manager and dual manager family business households with respect to factors that contribute to their perceptions of business and family success. The data are from a nationally representative sample of 673 family business households. Using a two-stage least squares regression procedure, the results show a unique relationship between family success and business success. Family success positively impacts business success, but not vice versa, and predictors of family and business success vary widely between household types. 相似文献
40.
The spatial separation of the poor in Canadian cities 总被引:1,自引:0,他引:1
We used the 1991 Canadian census to examine the extent of spatial separation of the poor in Canadian cities. Although there were no extensive areas of blight, decay, or housing abandonment, we found high spatial separation of poor visible minorities in the selected cities. The index of dissimilarity indicates high segregation of poor blacks and moderate separation of poor Asians from the nonpoor population. We tested the effects of three major structural factors--racial and ethnic segregation, income segregation, and urban redevelopment--and found that racial and ethnic residential patterns are related strongly to the spatial separation of poor persons. The relationship between income segregation and spatial separation of the poor is not significant, however. We also found that the relationship between urban redevelopment and spatial separation of the poor pertains only to blacks. These findings suggest that blacks are vulnerable in the process of urban redevelopment. 相似文献