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On the unit of description in phenomenography 总被引：1，自引：0，他引：1
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信息技术支持下的科学研究性学习:模式、实施与成效——以“数字化微型气象站”在研究性学习中的应用为例 总被引：1，自引：0，他引：1
通过以"数字化微型气象站"在科学研究性学习中的应用为例,探析了运用信息技术开展研究性学习的方式,实施了气象专题系列式的研究性学习,并通过访谈调查法了解学习的成效。调查结果表明,学生在研究性学习中体会到科学研究的过程并获得了积极的情感体验;师生们都对信息技术支持下的科学研究性学习给予了较高地评价。 相似文献
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Using data from the New Immigrant Survey, a study based on a nationally representative sample of legal immigrants, the present study extends prior research on the academic outcomes of immigrants' children by examining the roles of pre- and postmigration parental characteristics and the home environment. An analysis of 2,147 children aged 6-12 shows that parents' premigration education is more strongly associated with children's academic achievement than any other pre- or postmigration attribute. Premigration parental attributes account for the test score disadvantage of Mexican-origin children of legal immigrants, relative to their non-Latino counterparts. The findings reveal continuities and discontinuities in parental socioeconomic status and demonstrate that what parents bring to the United States and their experiences after arrival influence children's academic achievement. 相似文献
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21世纪地理科学自然地理综合野外实习研究 总被引：9，自引：1，他引：8
王鹏 《衡阳师范学院学报》2000,21(6):126-130
为培养21世纪素质高,能力强的高级专门人才,特就高等师范院校地理专业自然地理综合野外实习的重要意义,内容和过程进行了分析和归纳,并根据目前实习中存在的主要问题提出了具体对策。 相似文献
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The development of private higher education in Macau has experienced rapid growth in the past two decades. The purpose of
this paper is to understand this trend by investigating the facts and figures supplied by official sources and to analyze
the role between the Government and the private sector. This paper shows that the attitude of the Macau Government is neither
authoritative nor laissez-faire toward private higher education. On the one hand, the Government is investing heavily in the
public sector. On the other hand, it is assisting the private sector by various means. However, there is a lack of systematic
planning in the area of public-private partnership. There are also two issues which may hinder the current development of
private higher education. They are an outdated legal framework and a lack of standardized quality assurance measures. 相似文献
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验证收缩骨骼肌细胞葡萄糖转运蛋白4（GLUT4）基因的表达在转录水平上是否受转录抑制子Ⅱ型HDAC5蛋白（简写为HDAC5）的调节。研究运用运动模拟信号5-氨基-4-甲酰胺咪唑核糖核苷酸（AICAR）和HDACs抑制剂SCRIPTAID孵育骨骼肌细胞。用蛋白印迹技术测定HDAC5蛋白表达,定量RT-PCR法检测GLUT4 mRNA表达。与无AICAR的对照组相比,AICAR组骨骼肌细胞内HDAC5减少了29%,并伴随有124% GLUT4 mRNA的增加,但肌细胞内HDAC5的蛋白总量无变化;使用HDACs抑制剂SCRIPTAID刺激骨骼肌细胞能够明显增加核心组蛋白乙酰化水平和上调GLUT4基因的表达。这些结果提示,通过AICAR和SCRIPTAID分别减少或抑制核HDAC5均能上调骨骼肌细胞GLUT4基因的转录,HDAC5可能在转录水平上对肌肉收缩引起的GLUT4基因的表达起着重要的调节作用。 相似文献
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Lai Yeen Pong 《International Information and Library Review》2013,45(3):163-179
This paper traces the development of computerisation of library operations in Singapore from 1970–1989. Two levels of computerisation are examined, namely:
(i) institutional level, and
(ii) network or national level.