Qualitative Differences Between Learning Environments Using Videos in Small Groups and Whole Class Discussions: A Preliminary Study in Physics

Interactivity, group learning and student engagement are accepted as key features of social constructivist learning theories. The challenge is to understand the interplay between such features in different learning environments. This study focused on the qualitative differences between two interventions—small-groups and whole-class discussions. In both interventions, three short video slices on the abstract topic ‘the physics of superconductivity’ were interspersed with the different discussion styles. The video slices are based on the Bruner stages. Twenty-nine first year university physics students completed a pre-test, underwent the intervention and completed a post-test. The remainder of the data were collected from student drawings, video recordings, observer notes and facilitator feedback. Results indicate that the use of the video slices in both interventions were successful in changing students’ understandings of superconductivity. However, the small groups treatment tended to facilitate questioning, meaning-making and subsequent changes of ideas more so than the whole class discussions. Implications for research and practice are discussed.     

小邾国及国都位置探微

位于今枣庄市山亭区的东江村就是春秋时期的小邾国故都,这可从四个方面证明。第一,从史籍记载的小邾国的地望来看,东江村在其疆域之内;第二,从历代史料对小邾国都城"郳城"记载的位置推断,郳城在今天的山亭区东江村一带;第三,从史料中记载的小邾国分化的姓氏分布来看,东江村为小邾国故都极为可能;第四,考古发掘等事实证明,东江村就是小邾国故都。     

从全球价值链看我国中小企业面临的困境

我国中小企业国际化面临潜在危机,危机来源于两个方面：处于全球价值链低端环节的附属企业的过度竞争和处于全球价值链高端环节的领导企业设置的攀升障碍．因此,增加信任、联合自主创新、联合自主品牌建设和联合提高国际法律维权能力,是解决当前我国中小企业困境的四种主要手段．     

“美国最伟大的一代”与《1944年军人再调整法》

在美国,因退伍军人所引发的问题涉及政治、经济与社会各个方面,催生出对此问题做出全面长远统筹的《1944年军人再调整法》。历届联邦政府为解决退伍军人问题所作出的立法努力,为《1944年军人再调整法》的颁布奠定了基础。退伍军人利益集团的奋争与推动,最终促成了《1944年军人再调整法》的诞生。此法案不是单纯地给予退伍军人以金钱补助,而是注重资助他们接受教育,开展个人事业,并进而引导其走上成功之路,并在某种程度上缔造了当代的美国。     

句法结构标记“给”与动词结构的衍生关系

本文主要讨论的问题有:汉语中专门用在动词前的给;给VP中给的句法语义作用;给VP中的VP(动词或动词词组)的句法语义特点;给VP结构的句法地位及相关动词结构的衍生关系。本文的结论对于建立汉语致使(CAUSE)动词系统及作格结构、中动结构和致使结构之间的衍生机制将提供新的观察角度和研究思路。     

实践意义与深度介入：“U—S”合作的京沪对话

由大学研究人员、中小学校长和教师组成的两支研究团队相会北京,就共同感兴趣的大中小学（即“U—S”）合作问题展开热烈对话,尽管双方对大中小学合作意义的认识“同中有异”,介入学校变革实践的过程与方式却是“异中有同”,对“U—S”合作的前景都充满信心,并且充分意识到自己在中国基础教育改革大业中不可旁贷的责任担当,对话留下的诸多问题也值得我们去继续更有深度的思索与行动。     

雁阵精神对中小企业团队管理的启示

雁阵飞行,目标一致,分工协作,效率极高。虽然它们有时要为群体的目标而牺牲个体,但最终能靠团体的力量克服各种困难。雁阵精神对于小企业管理,特别是打造员工的团队协作精神具有重要的启示,如发挥“领头雁”的模范作用,调动“群雁”的积极性,提升单只“大雁”在雁群中的归属感和使命感,等。     

中部地区中小企业集群发展模式应用分析——以安徽省阜阳市为例

近年来,中部地区以专业化分工和协作为基础的同一产业或相关产业的中小企业,通过地理位置上的集中或靠近,获得了集群创新的优势,极大地促进了该地区经济发展。本文以安徽省某产业集群专业镇为例,通过建立log istic模型剖析该产业集群的特征,揭示中部地区的中小企业集群发展模式的共生性因素,提出应根据地区资源禀赋状况,通过完善集群外部环境、加强集群内部企业交换关系等举措,促进中小企业集群稳定而科学的发展。     

Association of CETP and LIPC Gene Polymorphisms with HDL and LDL Sub-fraction Levels in a Group of Indian Subjects: A Cross-Sectional Study

There is an increasing interest to understand the molecular basis of high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) subfractions and their association with coronary artery disease (CAD). The formation of these subfractions is greatly influenced by hepatic lipase (HL) and cholesteryl ester transfer protein (CETP) enzymes. To identify genetic markers influencing LDL and HDL subfractions and their role in CAD we performed a case–control genetic association study on 117 healthy controls and 119 angiographically verified CAD patients. Biochemical analysis was performed using standard assays. HDL-C and LDL-C subfractions were estimated using precipitation methods. Genotyping of C-514T (rs1800588) in the LIPC gene for HL and I405V (rs5882) in the CETP gene was done using PCR-based restriction enzyme analysis and sequencing. Both the polymorphisms were not associated with CAD. The C-514T was associated with increased HDL₃-C levels in controls (P = 0.049). The I405V polymorphism was found to be associated with low levels of small dense, LDL (P = 0.038). A multiple regression analysis showed that the effects were dependent on gender and triglyceride levels. We conclude that these polymorphisms are not associated with CAD but are important determinants of HDL-C and small dense LDL particles in our population.     

我国中小企业员工股票期权制度的实施障碍--对广州市高新科技中小企业的调查分析

员工股票期权制度是一项灵活有效的长期激励制度，在国外被许多中小企业，尤其是高科技行业中小企业普遍采用，但在我国一直难以广泛推行。本文通过对广州市部分高新科技企业调查后认为，这一制度在我国推行的最大障碍主要来源于企业决策者(或企业主)、员工及外部环境三方面，在此基础上提出了一些有价值的建议。