网络对青少年人际交往模式的解构分析

基于网络技术为载体的网络社会,作为一种全新的社会存在方式正在深刻影响着现实社会,对人们的生活方式造成巨大的冲击。从微观研究的视角出发,把社会行动作为切入点,比较分析网络社会人际交往模式同现实社会人际交往模式的不同取向。     

基于底层特征建模的行为识别算法优化

近年来基于时空兴趣点的视觉词袋(bag of video words,BOVW)模型被广泛用于行为识别算法研究;但是该模型忽略了每一种视觉单词的权重,另外没有考虑兴趣点时空分布信息,因而制约了其识别精度。提出了两种算法解决上述问题;其一,采用词频-逆向文件频率(term frequency-inverse document frequency,TF-IDF)方法对传统BOVW直方图进行优化处理,根据视觉单词在词袋与BOVW直方图的比例权衡其重要程度;其二,提出了基于三维共生矩阵的时空兴趣点互信息(spatialtemporal interest points mutual information,STIPsMI)算法,刻画不同视觉单词的时空兴趣点之间的时空关系。然后将STIPsMI描述符与优化后的BOVW直方图级联,作为视频序列最终的描述符。最后在两个主流的数据集KTH与UCF sports对该算法进行评估。实验结果表明,提出的时空特征描述符在行为识别准确率上优于BOVW模型与其他主流方法。     

试论数学构造思想方法及其在教学中的作用

探讨了数学构造思想方法的涵义及其特征，同时从四个方面研究了它在数学教学中的作用。     

Developing Ourselves as Police Leaders: How Can We Inquire Collaboratively in a Hierarchical Organization?

This paper gives a practical account of a recent 18-month long action inquiry project, in which the author facilitated (and co-inquired with) a mixed group of police managers with the intention of improving our own leadership practices. Six phases of the inquiry are identified—doing the groundwork, getting the group together, creating a safe environment, sustaining the inquiry, accounting for the learning, and bridging the gaps. It is argued that such forms of collaborative inquiry are particularly well suited to addressing the uniquely complex phenomenon of leadership, and some tangible benefits for members of the project and for the organization as a whole are identified. Particular attention is paid to the politics and practicalities of doing collaborative inquiry in an overtly hierarchical organization, concluding that action inquiry must be crafted to its particular circumstances and context to realize its considerable potential to help us improve both individual practice and organizational performance.     

Locke’s construction of the idea of power

I explain Locke’s account of the origin of our idea of power, showing that it concerns the idea of the disposition to act or change, and that this idea is constructed out of the ideas of action or change. I also show how Locke could have modified his account to avoid Hume’s criticism and argue that his neglect to do so reflects a studied neglect of taxonomy, an ambiguity in the notion of capacity, and complications in Locke’s conception of simple ideas. A comparison of the two empiricists reveals that not only do they disagree about the role of reason in the origin of our idea of power, but they are also talking about different ideas. Within the framework of Locke’s account of the origin of the idea of power, I explain why he believes that bodies only provide us with an obscure idea of active power. I conclude by defending his insight that there is a deep connection between the ability to predict and the idea of power.     

Action Research on Operations Research for Street Children

This paper discusses an application of the CRASP model of Action Research (AR) on Operations Research (OR). The CRASP model portrays AR as a style of staff development that would lead to professionalism. It also advocates social responsibility, committed and informed action, and a critical approach. All of these concerns are inherent to the process of reflection and development characteristic of OR. As an OR practitioner I participate in this process of reflection and development and applied the CRASP model of AR in performing one application novel to OR, namely, OR for street children. Reflecting on this application of AR on OR for street children, some similarities between AR and OR surface, as well as some difficulties in applying AR on OR, thereby enriching both AR and OR. It is hoped that through collaborative reflection with other AR and OR practitioners, this paper will further our professional development.     

健康黑松幼苗中的电波传递

以健康黑松功苗为材料，用非伤害性刺激（如冷冻）和伤害性刺激（如烧伤、刺伤、化学伤害等）引发植物体内的波形的变化。研究表明，非伤害性刺激能在幼苗体内引起动作电波的传递，伤害性刺激除了能引起和电波的传递外，还能引起较复杂的变异电波的传递，并对这种现象进行了讨论。     

研究板内变形的一种可能途径

板内变形是当今板块构造研究的前沿,本文着重讨论了研究板内变形的一种可能途径。其思路如下:首先,从地球动力学出发,充分考虑周围板块的构造背景,然后将板块作为一个整体,全面、系统地研究板內各块体的特殊性及不均一性.在此基础上,将板缘作用对板內各板块产生的影响和板内地球的深部作用及软硬不同的块体之间的相互作用结合起来,综合分析不同时代、不同应力布局、不同变形方式和强度的板內各块体的內在联系,探讨板內不同块体可能的变形机制.     

基于动作分析的汽车发动机流水线作业过程分析与优化

以上汽乘用车发动机流水线为研究对象，应用工业工程的模特法（Modle法）对瓶颈工位，即安装润滑油轨、油底壳垫片及油底壳操作过程进行了动作分析．并运用动作经济原则对操作过程进行了优化，使效率获得了提高。