基于知识图谱的国内石墨烯研究分析与发展对策

以SCIE数据库中1994-2012年我国的石墨烯论文为研究对象,借助SCIE分析功能和信息可视化软件CiteSpace,对石墨烯文献进行计量和可视化分析。通过绘制知识图谱,展示了我国石墨烯研究的时间分布、空间分布、研究力量分布和主要研究领域,揭示了石墨烯的研究热点与应用领域,并就石墨烯研究的发展提出对策建议。     

弱序列连续的半闭1-集压缩映射的新不动点

利用弱序列连续的半闭1-集压缩映射的非线性二择一性质,得到了Banach空间中弱序列连续的半闭1-集压缩映射的若干新不动点定理,从而将著名的Altman定理、Roth定理和Petryshyn定理由压缩映射推广到弱序列连续的半闭1-集压缩映射的情形.     

Evaluating effects of atmospheric CO2 on stability of global climate: a cell-to-cell mapping approach

Atmospheric carbon dioxide concentration [CO2], incoming solar radiation and sea ice coverage are among the most important factors that control the global climate. By applying the simple cell-to-cell mapping technique to a simplified atmosphere-ocean-sea ice feedback climate model, effects of these factors on the stability of the climatic system are studied. The current climatic system is found to be stable but highly nonlinear. The resiliency of stability increases with [CO2] to a summit when [CO2] reaches 290 μL/L which is comparable to the pre-industrial level, suggesting carbon dioxide is essential to the stability of the global climate. With [CO2] rising further, the global climate stability decreases, the mean ocean temperature goes up and the sea ice coverage shrinks in the polar region. When the incoming solar radiation is intensified, the ice coverage gradually diminishes, but the mean ocean temperature remains relatively constant. Overall, our analysis suggests that at the current levels of three external factors the stability of global climate is highly resilient. However, there exists a possibility of extreme states of climate, such as a snow-ball earth and an ice-free earth.     

拓扑空间中的截口定理及其应用

将KyFan截口定理推广到具有性质（H）的拓扑空间．作为应用,在具有性质（H）的拓扑空间上进一步推广了Browder不动点定理,并利用所得结果在具有性质（H）的拓扑空间中证明了极大极小不等式定理和鞍点定理．     

两种用于城市用水量预测的灰色-神经网络组合模型

为了提高灰色GM(1,1)模型在城市用水量预测中的精度,结合BP神经网络的优点,给出了两种灰色-神经网络组合模型GM-BP1和GM-BP2.模型1利用神经网络对GM(1,1)模型的误差序列进行回归训练,将得到的预测值作为原始误差的修正来减小误差;而模型2由部分数据建立了GM(1,1)模型组,通过神经网络训练得到部分数据GM(1,1)模型组与真实值之间的非线性映射关系,利用这种精准的映射关系来提高预测精度.最后实际算例表明了所给方法是有效的,该组合模型可用于城市用水量的中长期预测.     

Mapping cultural assets and evaluating significance: theory,methodology and practice

Over the last decade in the UK, there has been a notable shift in the popularity and use of cultural mapping as a methodology for policy making at a regional and local level. This follows increased demand for an informed framework for planning arts and cultural facilities from local and regional government and from within the cultural sector (Evans, 2008: p. 65). The article begins with an exploration of cultural mapping within cultural policy, which explores the context for the growth in this area of activity, and why this kind of activity appeals to policy makers and organisations. It then goes on to examine four cultural mapping exercises which have been undertaken in recent years in the UK. These studies have been chosen because although they all focus the mapping of cultural assets within a specific geographic area, they differ to one degree or another in purpose, context, definition, geographic scale and methodology. They illustrate the narrow range of approaches deployed in the cultural mapping field in the UK, and as such provide a useful means of critically reviewing their limits as well as highlighting the issues and challenges faced by cultural cartography in practice. The article concludes by considering the type of mapping research that is “allowed” within the discursive confines of consultancy based cultural policy research.     

Complete graphs and bibliographic coupling: A test of the applicability of bibliographic coupling for the identification of cognitive cores on the field level

The method of bibliographic coupling in combination with the complete link cluster method was applied for mapping of the field of organic chemistry with the purpose of testing the applicability of a proposed mapping method on the field level. The method put forward aimed at the generation of cognitive cores of documents, so-called ‘bibliographic cliques’ in the network of bibliographically coupled research articles. The defining feature of these cliques is that they can be considered complete graphs where each bibliographic coupling link ties an unordered pair of documents. In this way, it was presumed that coherent groups of documents in the research front would be found and that these groups would be intellectually coherent as well. Statistical analysis and subject specialist evaluations confirmed these presumptions. The study also elaborates on the choice of observation period and the application of thresholds in relation to the size of document populations.     

国民"健商"培育与学校体育改革

采用文献资料、信息查询等方法,对“健商”这一新概念的内涵、国民“健商”基本状况及提高国民“健商”的方法作了尝试性的研究与探讨。认为,“健商”是一种新健康文化概念;提高国民“健商”应更新学校体育基本理念,改革体育课程,加强学校体育环境的建设,加强学校、社会、家庭一体化建设,注重体育教师素养的提高。     

集值映象对与单值映象的公共不动点定理

在单值映象与集值映象相容或次相容的条件下,给出了完备凸度量空间中集值映象对于单值映象存在公共不动点的一个充分条件,改进和推广了文[1-4]中的已知结果。     

浅析山区高校学生的消费现状、发展趋势及对策

山区高校学生作为一个特殊的消费群体,有着不同于其他消费群体之处,如:他们的消费结构不合理,财商不成熟,理财能力差,攀比心理强,交往消费过高,恋爱支出过度等等,背景比较复杂。