Science notebooks as interactional spaces in a multilingual classroom: Not just ideas on paper

Past studies have explored the role of student science notebooks in supporting students' developing science understandings. Yet scant research has investigated science notebook use with students who are learning science in a language they are working to master. To explore how student science notebook use is co-constructed in interaction among students and teachers, this study examined plurilingual students' interactions with open-ended science notebooks during an inquiry science unit on condensation and evaporation. Grounded in theoretical views of the notebook as a semiotic social space, multimodal interaction analysis facilitated examination of the ways students drew upon the space afforded by the notebook as they constructed explanations of their understandings. Cross-group comparison of three focal groups led to multiple assertions regarding the use of science notebooks with plurilingual students. First, the notebook supported student-determined paths of resemiotization as students employed multiple communicative resources to express science understandings. Second, notebooks provided spaces for students to draw upon diverse language resources and as a bridge in time across multiple inquiry sessions. Third, representations in notebooks were leveraged by both students and teachers to access and deepen conceptual conversations. Lastly, students' interactions over time revealed multiple epistemological orientations in students' use of the notebook space. These findings point to the benefits of open-ended science notebooks use with plurilingual students, and a consideration of the ways they are used in interaction in science instruction.     

具有光滑核的分数次积分算子的交换子的Besov估计

讨论了Besov函数与具有光滑核的分数次积分算子生成的交换子b,TΩ,α在哈代空间上的连续性,得到如下结论：当b∈∧p,q^B,Ω（x）∈C^1（R^n）时,在一定条件下,证明了b,TΩ,α是从H^d（R^n）到L^r（R^n）有界的。     

自反Banach空间中多目标博弈平衡点存在性

在自反Banach空间给出了较弱条件下的多目标博弈平衡点存在性定理．     

2类压缩映射的强收敛定理

在一般Banach空间研究了拟压缩映射对和广义压缩映射的不动点的Ishikawa迭代序列的收敛性问题;在凸度量空间研究了拟压缩映射对的不动点的广义Ishikawa迭代序列的收敛性问题,所得结果推广和改进了已有文献中的相应结果.     

一般拓扑学中的一些问题及解答

列举林寿及其合作者于1988年至2009年在发表的论文或出版的著作中提出的138个拓扑学问题的解答情况,其中已解决的问题48个,未解决的问题90个.     

关于K极光滑空间

2001年冼军引入了k极光滑空间的概念,作为与其对偶的想法苏雅拉图和李广利引入了k极凸空间,并充分地研究了这一类凸性空间.虽然k极光滑空间概念较早被提出来,但是这一类光滑性空间尚未得到深入的研究,甚至这一类光滑性与其它光滑性之间的关系尚未弄清楚,本文深入研究了这一类光滑性空间,得到了它的一些性质以及与其它光滑性质之间的关系.另外,证明了:若X是弱局部k一致凸空间,则对每个x∈S(X),f∈Sx是X*的k光滑点。     

基于扎根理论的众创空间创新机制研究

基于扎根理论的研究方法,在对19个国家级或省级众创空间样本研究基础上构建众创空间创新机制模型。研究发现:众创空间的创新机制核心要素为基础禀赋、网络能力、制度环境、网络嵌入性和创新方式五类,其中,基础禀赋与网络能力为创新能力生产阶段要素,信任嵌入、承诺嵌入、信息共享、联合解决和制度环境为网络嵌入性阶段要素,利用式创新与探索式创新为创新绩效生成阶段要素;众创空间的创新能力是创新绩效的前因基础,网络嵌入性是创新能力与创新绩效的中介因素,制度环境是创新能力与嵌入性要素的调节因素。     

中国语境下“法律信仰”的内涵——从伯尔曼的《法律与宗教》谈起

通过增加宗教的社会性和法律的神圣性因素,伯尔曼把法律与宗教联结起来。法律与宗教在欧洲的结合,不仅有着现实的、研究方法的原因,还有着更深的历史、文化基础。西方社会的法律与宗教在制度上相互影响,在观念上相互依赖——因为它们都建立在“理性”的基础上。我国亦应以理性为指导,结合本国国情,重新界定法律信仰的内涵。法律信仰是法律职业者内心深处对法律制度、法律精神应有的一种理性的法律情感,其最终的目标在于创制良好的法律制度并保证其实现。     

A note on the Marcinkiewicz integral operators on F_p~(α,q)

In this paper, we shall prove that the Marcinkiewicz integral operator μ, when its kernel satisfies the L1-Dini condition, is bounded on the Triebel-Lizorkin spaces. It is well known that the Triebel-Lizorkin spaces are generalizations of many familiar spaces such as the Lebesgue spaces and the Sobolev spaces. Therefore, our result extends many known theorems on the Marcinkiewicz integral operator. Our method is to regard the Marcinkiewicz integral operator as a vector valued singular integral. We also use another characterization of the Triebel-Lizorkin space which makes our approach more clear.