量子环面导子代数上的导子

设Fq是F上关于量子矩阵q=（qij）的量子环面,本文确定了[Fq,Fq]的导子Der[Fq,Fq],当M是Z^n的一个非退化子集时,证明了Der[Fq,Fq]是完备李代数．     

用科学观念再思文学理论创新

科学观念至少有两层含义：一个是科学的结论;一个是科学的原理。是科学原理决定着科学结论。西方文化是数学的分泌物,是产生西方文化的科学原理。不掌握这个科学原理,回避这个科学原理,就难以准确理解西方文化,包括“后现代”的内涵。文论创新要走“中西融合”之路,没有数学的参与岂能融合,又岂能创新？于是就不得不请教数学。     

亚完备二分图的算术性

图的算术性是图的一个重要性质,有广泛的应用．文章给出亚完备二分图的算术标号。并证明亚完备二分图是（k,d）-算术图．这一结果丰富了图的算术性理论,也为研究其它图类的算术性提供了有价值的参考．     

基于全覆盖路径规划的地面搜索问题研究

对简化的地面搜索问题进行研究。首先用最小覆盖原理求出组内每个人的实际搜索半径;考虑组内所有搜索队员作为一个整体沿区域扫描线方向进行搜索,从而可导出一组搜索队伍总的搜索宽度;然后用搜索队伍总的搜索宽度对目标区域进行栅格化;最后采用基于栅格地图的全覆盖路径规划算法对问题1进行求解。对问题2。首先根据时间均衡原则和各组人数均衡原则,确定好各组人数与各组区域优化分配,于是问题2就转化为问题1,便可采用问题1的模型进行求解。理论分析与计算结果表明该方案是可行的。     

空白背书的效力与连续性问题研究

从《票据法》第30条条文来理解,似乎是否定了空白背书具有法律效力,但是该务存在着立法上的漏洞,在实践中也欠缺可操作性。从各方面综合衡量,我国票据法应当立法承认空白背书的法律效力。最高院《关于审理票据纠纷案件若干问题的规定》第49条从司法的角度肯定了空白背书的法律效力,但是无法解决各种票据转让形式下空白背书的连续性问题,应当对其作扩大解释,并结合背书的基本原理加以应用。     

Climate change? A comparison of language and literacy practices relating to the teaching of science across the Key Stage 2/3 interface in two school clusters

This paper reports the findings of a study of the literacy perceptions and practices of general primary teachers (Key Stage 2) and post‐primary science teachers (Key Stage 3) within two clusters of schools. The study also explores the possible impact on pupils of any difference in the language climate which may accompany them on their journey across this curricular interface. Interviews with science managers and teachers suggest a quite restricted view of literacy is taken in both phases of schooling with no evidence of any practices which may support the notion of curricular continuity. The different approaches to the introduction of scientific terminology, writing, reading and classroom discussion were reflected in pupils' accounts of their experience and clearly posed a problem for some. We suggest there would be merit in teachers adopting a much wider perspective on literacy which recognises the opportunities for developing the interrelated strands of “general literacy” and “the discourses of science” alongside “learning through language”. By addressing each of these domains, and sharing practice across the key stages, a more comprehensive and coherent approach to “language, literacy and science learning” may result, in turn helping minimise the adverse effects of “language climate change”.     

Riemann积分和Lebesgue积分的联系和本质区别

从Riemann积分和Lebesgue积分的思想形成的历史入手,深入分析二者的定义,通过对二者的比较,研究Riemann积分和Lebesgue积分的联系和区别。通过论证得知,从Riemann积分推广到Lebesgue积分的本质是从不完备空间R[a,b]到完备空间L[a,b]的扩充。     

Educating for the real world: an illustration of John Dewey’s principles of continuity and interaction

The principles of interaction and continuity (intersection between experience and education) form a major part of John Dewey’s philosophical discourse. According to Dewey, these principles determine the quality of educative experience for meaningful life‐long learning. In this article, I argue that nowhere is the relationship between experience and education better illustrated than in Carter G. Woodson’s work, The mis‐education of the Negro, and in Malcolm X’s intrinsic life experiences.     

美国一流大学本科课程纵向结构特点初探

世界一流大学创新人才培养是通过贯穿本科四年的一系列结构严谨的课程体系得以实现的,其中新生研讨课、通识教育课程、本科生科研、大四顶峰课程等“四大类”特殊课程计划发挥了重要作用。它们与专业课相互支持,使本科四年的课程体系循序渐进、体系完整,使创新能力和批判性思维的教育目标得到了保证。相比较而言,我国的课程问题反映出我们需要从文化传统上对知识观进行反思。     

政府补助对企业研发投入与绩效的影响——基于生物医药制造业的实证研究

以中国生物医药制造业上市公司为样本,采用2012—2015年数据实证分析政府补助的规模与连续性对研发投入和企业绩效的影响,以研究政府研发补助政策的有效性。研究发现,企业研发投入与绩效显著正相关,政府补助可以促进企业加大研发投入,而政府补助的规模对于研发投入与企业绩效存在负向调节作用,政府补贴的连续性对研发投入与企业绩效存在正向调节作用。基于研究结论,提出了调整企业研发补助形式等建议。