黎曼流形中2-调和子流形的一个注记

讨论黎曼流形中的紧致2-调和子流形,得到了这类子流形的上的广义Simons-型积分不等式.     

基于Sobel算子预处理的变分水平集曲线演化目标跟踪方法

针对变分水平集在曲线演化目标跟踪方法中,直接计算得到的模值图较杂乱,利用Gaussian函数首先对图像进行平滑处理,然后利用中心差分计算梯度,并推导出二者的作用等价于Sobel算子与图像作运算.实例表明该算法使得曲线在演化过程中能够准定位,从而实现目标的正确跟踪.     

消费时代的小说创作

面对消费主义时代,当代小说创作必须重塑自我,追求一种诗性的言说,讲述富于当下性的故事,创造与精神图景相一致的艺术结构,聚拢孕育性的生动"细节",发掘出意识下的"潜在的真实"与"灵魂的颤抖",而在真实的生活经验与虚构的事物之间建立联系,真正进入生活的深处和根部,实现对于现实生活世界的有效"介入".     

具有多变时滞的多智能体复杂动态网络的平均一致性

研究了具有多变时滞的多智能体无向网络的平均一致性问题.在稳定性分析中,应用线性矩阵不等式（LMI）的方法,得到了多智能体无向多时滞网络的一致性收敛的充分条件.最后,仿真示例对理论结果进行了验证.     

粗糙核向量值奇异积分算子的几个加权赋范不等式

向量值奇异积分算子的核决定着算子的性质和加权不等式．标准核向量值奇异积分算子的研究内容已经日趋完善,弱Dini型核以及粗糙核向量值奇异积分算子也有所研究,但研究内容不够完善,现继续研究粗糙核向量值奇异积分算子,得到了这类算子的几个加权赋范不等式,丰富了向量值奇异积分算子的理论．     

From absent to active voices: securing disability equality within higher education

This article discusses the representation and participation of disabled students in the development of higher education policy and provision within the UK, at both a national and institutional level. Findings are drawn from a doctoral study, which identified the importance of student participation in securing equality and inclusion. Power relationships and established boundaries are explored to ascertain how vocal disabled students are in these processes. Questions are addressed in terms of the genuineness and effectiveness of participatory approaches, identifying those barriers that are likely to impede the process. These include the influence of dominant ideology, professional expertise and attitudes towards the capability of disabled students. All are important when considering the increased rights of disabled people.     

Perspectives on academic staff involvement in the acquisition and implementation of educational technologies

This article presents the results of a study using both quantitative and qualitative data to uncover the extent and nature of the involvement of academic staff in the processes of acquisition and implementation of educational technologies. Actor-network theory (ANT) is used to inform the design of the study and the analysis of the data. Three main areas of investigation are (1) issues of institutional policy and overall purpose of technology, (2) issues of staff involvement in various activities related to acquisition and use of technology and (3) issues related to the existence of arenas for dialogue and discussions of technological needs and requirements across organisational boundaries. The analysis focuses on the diffuseness of the role of academic staff in processes of development of institutional policies and technology acquisition. The article concludes with suggestions for organisational policy in higher education contexts, and possible directions for new research.     

Metacognitive activities in text-studying and problem-solving: Development of a taxonomy

This article describes the construction of a hierarchical taxonomy of metacognitive activities for the interpretation of thinking-aloud protocols of students in secondary education, who studied texts on history and physics. After testing an initial elaborate taxonomy on a restricted number of protocols by multiple raters, it appeared that the interrater correspondence was well below par. The categories in the taxonomy were too highly specified. Categories were combined and tested on new protocols in a cyclic fashion. The revised taxonomy was then used for coding 16 history protocols and 16 physics protocols. Frequencies of occurrence of metacognitive activities were obtained, as well as judgements of the quality of the metacognitive activities of the participants. There is a reasonable correlation between the frequency method and the quality method for coding thinking-aloud protocols. Also, there is a substantial covariation of the number of metacognitive activities across both tasks.     

Hilbert空间中一类强伪压缩映射的不动点定理与路径收敛

研究了Hilbert空间中一类强伪压缩映射的不动点问题,提出了一个新的路径公式,得到了一个新的不动点存在定理和路径收敛性结果.给出了所得结果在变分不等式解存在性研究中的应用.     

数学分析中Jensen不等式由浅入深进行教学

不等式的证明一直是数学分析教学的重点和难点,运用Jensen不等式能使不等式的证明变得清晰明了.目前大多数学分析教材对Jensen不等式叙述零散且证明复杂繁琐不统一.在数学分析中由浅入深的系统学习离散型和积分型Jensen不等式,并利用凸函数的性质给出了这几种类型Jensen不等式的简单统一证明尤为重要.