通识教育：美国与中国   总被引：5，自引：0，他引：5  

甘阳 《复旦教育论坛》2007,5(5):22-29

本文是甘阳教授2007年6月14日在复旦大学演讲的整理稿,演讲以美国大学的通识教育为参照,讨论了中国大学推进通识教育的一些重要原则问题,提出了通识教育课程改革的若干意见.  相似文献   

Genetic analysis for brix weight per stool and its component traits in sugarcane （Saccharum officinarum）     

Liu GF  Zhou HK  Hu H  Zhu ZH  Hayat Y  Xu HM  Yang J 《Journal of Zhejiang University. Science. B》2007,8(12):860-866

Brix weight per stool (BW) of sugarcane is a complex trait, which is the final product of a combination of many components. Diallel cross experiments were conducted during a period of two years for BW and its five component traits, including stalk diameter (SD), stalk length (SL), stalk number (SN), stalk weight (SW), and brix scale (BS) of sugarcane. Phenotypic data of all the six traits were analyzed by mixed linear model and their phenotype variances were portioned into additive (A),dominance (D), additive×environment interaction (AE) and dominance×environment interaction (DE) effects, and the correlations of A, D, AE and DE effects between BW and its components were estimated. Conditional analysis was employed to investigate the contribution of the components traits to the variances of A, D, AE and DE effects of BW. It was observed that the heritabilities of BW were significantly attributed to A, D and DE by 23.9%, 30.9% and 28.5%, respectively. The variance of A effect for BW was significantly affected by SL, SN and BS by 25.3%, 93.7% and 17.4%, respectively. The variances of D and DE effects for BW were also significantly influenced by all the five components by 5.1%～85.5%. These determinants might be helpful in sugarcane breeding and provide valuable information for multiple-trait improvement of BW.  相似文献   

Comparison of high order aberration after conventional and customized ablation in myopic LASIK in different eyes of the same patient   总被引：4，自引：0，他引：4  

Du CX  Shen Y  Wang Y 《Journal of Zhejiang University. Science. B》2007,8(3):177-180

Purpose: To verify whether there exists any difference in higher order aberrations after undergoing myopic LASIK (laser in situ keratomileusis) with conventional ablation and customized ablation in different eyes of the same patient. Methods: This was a prospective randomized study of 54 myopic eyes (27 patients) that underwent LASIK using the Nidek EC-5000 ex-cimer laser system (Nidek, Gamagori, Japan). Topography-guided customized aspheric treatment zone (CATz) was used in the first eye of the patient (study group) and the other eye of the same patient was operated on with conventional ablation (control group). Higher order aberrations [root-mean-square (RMS) in the 5-mm zone] of both groups were observed with the Nidek OPD-Scan aberrometer before and 3 months after LASIK. Preoperative mean refractive error was similar between two eyes of the same patient (t=?0.577, P>0.05). Results: Preoperatively, higher order aberrations (RMS in the 5-mm zone) in the CATz ablation and conventional groups were (0.3600±0.0341) μm and (0.2680±0.1421) μm, respectively. This difference was not statistically significant (t=1.292, P>0.05). Three months after LASIK, higher order aberrations (RMS in 5-mm zone) in the CATz ablation and conventional groups were (0.3627±0.1510) μm and (0.3991±0.1582) μm, respectively. No statistically significant difference was noted between pre- and postoperative higher order aberrations in the CATz group (t=?0.047, P>0.05). However, a statistically significant increase in higher order aberrations was observed after conventional ablation (t=?5.261, P<0.05). A statistically sig-nificant difference was noted in the increase of higher order aberrations after LASIK between groups (t=?2.050, P=0.045). Con-clusion: LASIK with conventional ablation and topography-guided CATz ablation resulted in the same BSCVA (best specta-cle-corrected visual acuity) 3 month after LASIK. Higher order aberrations were increased, but the increase of higher order ab-errations after customized ablation treatment was less than that after conventional ablation.  相似文献   

Study of Resistin gene expression in peripheral blood mononuclear cell and its gene polymorphism in a small range population     

Yang YM  Xu ZR  Wu LJ  Huang WD 《Journal of Zhejiang University. Science. B》2007,8(2):132-135

INTRODUCTION Recently discovered as an endocrine organ, adi-pose tissue can secrete many cytokines such as Re-sistin, adiponectin and free fatty acids, and receives much attention in the study of insulin resistance and type 2 diabetes mellitus (T2DM). As a peptide hor-mone secreted by adipocyte, Resistin is considered to be the linkage between obesity and insulin resistance (Steppan et al., 2001). Most studies on Resistin in-vestigate adipose tissue. In this experiment we de-tected t…  相似文献   

Effect of lead on ERK activity and the protective function of bFGF in rat primary culture astroglia     

Zhang Y  Ye LP  Wang B  Cao SC  Sun LG 《Journal of Zhejiang University. Science. B》2007,8(6):422-427

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Genetic analysis of fruit shape traits at different maturation stages in sponge gourd   总被引：5，自引：0，他引：5  

Zhang S  Hu J  Zhang CF  Guan YJ  Zhang Y 《Journal of Zhejiang University. Science. B》2007,8(5):338-344

The fruit shape is important quantitative trait closely related to the fruit quality. However, the genetic model of fruit shapes has not been proposed. Therefore, in the present study, analysis of genetic effects for fruit shape traits （fruit length and fruit perimeter） in sponge gourd was conducted by employing a developmental genetic model including fruit direct effects and maternal effects. Analysis approaches of unconditional and conditional variances were applied to evaluate the genetic behavior of fruit shape traits at economical and physiological maturation times. The results of variance analysis indicated that fruit length and fruit perimeter were simultaneously affected by fruit direct genetic effects and maternal effects. Fruit direct genetic effects were relatively more important for fruit shape traits at whole developmental period. The gene expression was most active at the economical maturation stage （1-12 d after flowering） for two shape traits, and the activation of gene was mostly due to direct dominance effects at physiological maturation stage （13-60 datter flowering）. The coefficients due to different genetic effects, as well as the phenotypic correlation coefficients, varied significantly between fruit shape traits themselves at various maturation stages. The results showed that it was relatively easy to improve fruit shape traits for industrial purpose by carefully selecting the parents at economical maturation stage instead of that at physiological maturation stage.  相似文献   

电子束辐照法在水处理中的应用     

吴代顺  于洋  张运生 《安阳工学院学报》2007,(4):32-35

介绍了电子束辐照机理,概述了电子束辐照降解有毒有害和难降解的有机污染物、去除重金属离子等方面在水处理中的研究和应用现状,最后对电子束辐照和其他的水处理工艺进行了比较,指出了其操作方便、安全的特点,并对其在水处理中的应用前景进行了展望.  相似文献   

高一学生历史活动课引发的思考     

杨莉 《历史教学》2007,(7):27-28

高中新课程改革,历史科需要改什么呢?"普通高中历史课程的设计与实施有利于学生学习方式的转变,倡导学生主动学习,在多样化、开放式的学习环境中,充分发挥学生的主体性、积极性与参与性,培养探究历史问题的能力和实事求是的科学态度,提高创新意识和实践能力".  相似文献   

我国老年教育的功能     

王颖 《成人教育》2007,(9):62-63

我国已经正式迈入老龄化社会的行列。在老龄化趋势日益显著的今天,我们应当充分认识到老年教育的功能。只有充分发挥老年教育的内部及外部功能,才能提高老年群体素质及生存质量,实现"老有所教、老有所学、老有所为、老有所乐",进而实现个体的终身、全面发展以及社会的持续和谐发展。  相似文献   

员工组织承诺生成机制的实证研究     

王颖  李树茁 《北京师范大学学报(社会科学版)》2007,(1):122-129

以489名IT员工为样本,以Yoon的模型为基础,利用结构等式模型深入探讨了组织承诺产生的中间机制,结果表明反映工作环境的变量主要通过工作满意度对组织承诺产生影响;反映组织环境的变量主要通过组织支持对组织承诺产生影响;大部分变量表现出显著性。模型能够较好地解释样本的组织承诺的方差变异,证明工作满意度和组织支持是影响组织承诺生成的中间变量。  相似文献