A New Two-Step Approach for Hands-On Teaching of Gene Technology: Effects on Students’ Activities During Experimentation in an Outreach Gene Technology Lab     

Franz-Josef Scharfenberg  Franz X. Bogner 《Research in Science Education》2011,41(4):505-523

Emphasis on improving higher level biology education continues. A new two-step approach to the experimental phases within an outreach gene technology lab, derived from cognitive load theory, is presented. We compared our approach using a quasi-experimental design with the conventional one-step mode. The difference consisted of additional focused discussions combined with students writing down their ideas (step one) prior to starting any experimental procedure (step two). We monitored students’ activities during the experimental phases by continuously videotaping 20 work groups within each approach (N = 131). Subsequent classification of students’ activities yielded 10 categories (with well-fitting intra- and inter-observer scores with respect to reliability). Based on the students’ individual time budgets, we evaluated students’ roles during experimentation from their prevalent activities (by independently using two cluster analysis methods). Independently of the approach, two common clusters emerged, which we labeled as ‘all-rounders’ and as ‘passive students’, and two clusters specific to each approach: ‘observers’ as well as ‘high-experimenters’ were identified only within the one-step approach whereas under the two-step conditions ‘managers’ and ‘scribes’ were identified. Potential changes in group-leadership style during experimentation are discussed, and conclusions for optimizing science teaching are drawn.  相似文献   

土地利用总体规划对生态系统服务价值的影响——以淳安县为例     

刘小伟  王秀珍  黄敬峰  毕雪梅  李波 《科技通报》2011,27(5)

以淳安县土地利用规划为研究对象,采用Costanza的生态系统服务价值计算方法,参照谢高地中国陆地生态系统单位服务价值系数,结合敏感度分析,探讨了淳安县土地利用总体规划对生态系统服务价值的影响。研究结果表明,在土地利用总体规划期间(2006-2020年),淳安县生态服务价值总体呈下降趋势,生态系统服务价值将净减少68.91×10~6元;生态系统服务价值下降的主导因素是规划建设占用和耕地补充。规划实施过程应该加强对生态环境的保护。  相似文献   

On Rest-from-Deliberate-Learning as a Mechanism for the Spacing Effect: Commentary on Chen et al. (2021)     

Sana  Faria  Yan  Veronica X.  Carvalho  Paulo F. 《Educational Psychology Review》2022,34(3):1843-1850

Educational Psychology Review - In their recent paper, Chen et al. (Educational Psychology Review, 2021) propose that rest periods between deliberate learning characterize the spacing effect and...  相似文献   

ZNF533、DOCK4和IMMP2L基因多态性与中国东北汉族孤独症的关联研究(英文)     

Shuang LIANG  Xue-lai WANG  Ming-yang ZOU  Han WANG  Xue ZHOU  Cai-hong SUN  Wei XIA  Li-jie WU  Takashi X. FUJISAWA  Akemi TOMODA 《Journal of Zhejiang University. Science. B》2014,(3)

研究目的:ZNF533、DOCK4和IMMP2L在大脑发育过程中起到非常重要的作用,是孤独症研究的候选基因。高加索人群的研究结果发现,ZNF533、DOCK4和IMMP2L基因的5个单核苷酸多态性(SNP)位点与孤独症高度相关。为了探讨上述位点是否与中国孤独症发生相关,我们开展了东北汉族孤独症的核心家系研究。创新要点:孤独症候选基因多态位点的研究结果通常很难得到重复。本研究首次在中国东北汉族人群中验证了与高加索人群孤独症密切相关的候选位点。这一结果对孤独症的研究具有重要指导意义。研究方法:利用SNaPshot的方法,检测了中国东北汉族370个核心家系中ZNF533(rs11885327、rs1964081)、DOCK4(rs2217262)和IMMP2L(rs12537269、rs1528039)的分布情况,利用传递不平衡检验(TDT)分析了这些多态位点与孤独症发生的相关性。重要结论:ZNF533和DOCK4基因多态性与中国北方汉族孤独症发生存在显著关联。  相似文献   

Family-based association study of ZNF533, DOCK4 and IMMP2L gene polymorphisms linked to autism in a northeastern Chinese Han population简     

Shuang LIANG  Xue-lai WANG  Ming-yang ZOU  Han WANG  Xue ZHOU  Cai-hong SUN  Wei XIA  Li-jie WU  Takashi X. FUJISAWA  Akemi TOMODA 《Journal of Zhejiang University. Science. B》2014,15(3):264-271

Objective

A study in a Caucasian population has identified two single-nucleotide polymorphisms (SNPs) in ZNF533, one in DOCK4, and two in IMMP2L, which were all significantly associated with autism. They are located in AUTS1 and AUTS5, which have been identified as autism susceptibility loci in several genome-wide screens. The present study aimed to investigate whether ZNF533, DOCK4, and IMMP2L genes are also associated with autism in a northeastern Chinese Han population.

Methods

We performed a similar association study using families with three individuals (one autistic child and two unaffected parents). A family-based transmission disequilibrium test (TDT) was used to analyze the results.

Results

There were significant associations between autism and the two SNPs of ZNF533 gene (rs11885327: χ ²=4.5200, P=0.0335; rs1964081: χ ²=4.2610, P=0.0390) and the SNP of DOCK4 gene (rs2217262: χ ²=5.3430, P=0.0208).

Conclusions

Our data suggest that ZNF533 and DOCK4 genes are linked to a predisposition to autism in the northeastern Chinese Han population.  相似文献   

知识考古与历史重诂:编撰《林纾年谱长编》的构想     

张旭  车树昇 《福建工程学院学报》2014,(2):107-110,120

论述编撰《林纾年谱长编》的总体构想。课题尝试运用现代史学方法对近代闽籍历史名人林纾进行知识考古和重诂,涉及谱主一生四个不同特质的时期。介绍这项课题的选题背景、动机和主要任务,同时提出年谱编撰方法方面的新观点。研究的目的是以新的历史观重构特定时期的历史人物。  相似文献   

Gender and ethnic differences in perceptions of equal opportunity climate and job outcomes of US Army Reserve component personnel     

Armando X. Estrada  Colin R. Harbke 《Int J Intercult Relat》2008,32(5):466-478

We examined equal opportunity climate (EOC) perceptions of reserve component personnel in the US Army (n = 949). We expected that gender and ethnic group membership would influence perceptions of the equal opportunity climate; and that gender and ethnic group membership would moderate the relationship between equal opportunity climate perceptions and ratings of job satisfaction, organizational commitment and workgroup effectiveness. Consistent with our hypothesis, we found the women and minorities perceptions regarding the equal opportunity climate were less favorable than White men. We also found that both gender and ethnicity moderated the relationship between equal opportunity climate perceptions and job outcomes of these groups. Our findings suggest that different groups are sensitive to particular aspects of EOC (e.g., harassment or discrimination) and that these sensitivities affect job-related outcomes.  相似文献   

The development,field test and validation of an inventory of scientific attitudes     

Richard W. Moore  Frank X. Sutman 《科学教学研究杂志》1970,7(2):85-94

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职业院校学生职业素养培养研究综述   总被引：1，自引：0，他引：1  

许亚琼 《成都航空职业技术学院学报》2010,26(2):17-20

职业素养培养研究已成为职业院校亟待关注的课程研究领域。本文以综述的形式研究了职业素养的内涵、职业素养缺失的原因、职业素养培养的基本理论和方法,并且提出了未来的研究方向,以期对后续研究做些前提性和基础性工作。  相似文献   

Reducing subjectivity in special education referrals by educators working with Latino students: using functional behavioral assessment as a pre-referral practice in student support teams     

Gerardo Moreno  Francisco X. Gaytán 《Emotional and Behavioural Difficulties》2013,18(1):88-101

Over the past several decades, the Latino population throughout the USA has demonstrated significant growth and exceeded that of other ethnic minority groups. This influx is particularly evident in the student enrollment of US schools as the number of Latino students has increased by approximately 10 million within the past 10 years. With this dramatic increase, there are a number of critical issues that present significant barriers to a high-quality educational experience for Latino students, specifically overrepresentation of Latinos receiving disciplinary actions and the high number of referrals to special education evaluation for emotional and behavioral disorders. This paper will discuss the impact of the Latino population in US schools, the concern of overrepresentation and biased referrals, and the use of a culturally attuned functional behavioral assessment as a pragmatic solution to better serve this growing population.  相似文献