The complexity of Chinese pedagogic discourse

This is one of X commentaries on Wu’s ‘Interpretation, autonomy, and transformation: Chinese pedagogic discourse in a cross-cultural perspective’ (JCS, 43(5), 569-590). It highlights the paper’s demystification of Western pedagogic discourse and recovery of the meaning of Chinese traditional pedagogic discourse as a response to the long-lasting debates on the Chinese–Western/traditional–modern dichotomies seen in China’s modernization. However, the paper overlooks the complexity of Chinese pedagogic discourse: it over-emphasizes the formal or linguistic dimension of pedagogic discourse, and presumes the dichotomy of Chinese–Western discourses and the discontinuity of traditional–modern cultures. After elaborating the ends, substances, methods, and teacher roles found in Chinese pedagogic discourses, this study argues that contemporary pedagogic discourses are essentially inhabited in indigenous traditions, and actively entangled with Western discourse. The meaning of Confucian traditional pedagogy should not (and cannot) be ‘recovered’ from the past, but be ‘found’ in the present.     

游牧狩猎社会原始体育形象的文化蕴含略考

人类体育源起于人类文明的童年阶段,尽管初起并不具备现代意义上的体育。但是,原始体育形象在人类历史文化中曾经普遍地发生,并呈现出清晰脉络。遵循考古学的理论和方法,通过民族学资料的佐证分析,从史前北方游牧民族的劳动过程中,对贺兰山岩画所遗存的原始体育形象进行考证,研究原始游牧民族如何通过这一造型艺术表现他们的运动意识,以及对美好生活的向往与追求。     

锚索技术在巷道支护中的应用

介绍了锚索支护技术的原理及在井下的应用情况,对应用结果和产生的经济效益进行了分析。     

两种中部切削结构的PDC钻头破岩效率研究

为提高深井钻井速度、延长钻头寿命及提高钻头破岩效率,以释放井底应力降低岩石抗钻能力为理论基础,设计并加工了中心外凸、中心内凹两种中部切削结构的PDC钻头,并与普通PDC钻头开展破岩效果对比实验.实验结果表明,与普通钻头相比,中心内凹钻头破岩钻进速度最大增幅达到了336％,中心外凸钻头破岩钻进速度最大增幅达到了89％.实...     

氧化还原滴定中等当点电位及在突跃线上位置的讨论

本文探讨氧化还原滴定中,两个半反应得失电子数n值对等当点在滴定曲线上位置的影响。     

The impact of the Gates Millennium Scholars Program on college and post-college related choices of high ability,low-income minority students

In this paper we analyze the impact of the Gates Millennium Scholarship Program on several outcome variables using a regression discontinuity design. We find that GMS recipients have lower college loan debt and parental contributions toward college expenses and work fewer hours during college than non-recipients. We also find that GMS recipients have higher grade point averages in their junior year of college and are more likely to aspire to a Ph.D. degree than non-recipients.     

Diversity of Terrestrial Cyanobacteria Colonizing Selected Stone Monuments in Serbia

The presence of biofilms on stone monuments can lead to biodeterioration processes that significantly lower not only the aesthetic value of cultural heritage sites but also cause considerable physical and chemical damage to stone surfaces. In terrestrial environments, cyanobacteria have a significant role in biofilm formation on a variety of natural and artificial stone substrata, including granite, sandstone, limestone, lime mortar, etc. Studies on cyanobacterial diversity and estimation of biodeteriorative activity on stone cultural heritage objects can be very important for conservators and restorers, and cyanobacteria removal from stone monuments is currently a great challenge for conservation science. In that sense, the diversity of terrestrial cyanobacteria was investigated at six localities in Serbia. Samples for cyanobacterial analyses were taken from surface biofilms covering different substrata: granite and lime mortar (The Monument to the Unknown Hero), sandstone (Branko's Bridge, Eiffel’s Lock) and carbonate rock (Medieval tombstones from Mramorje and Rasti?te, Gradac Monastery). A total of 18 cyanobacterial taxa were identified. The highest diversity was found on carbonate rock, followed by sandstone. Cyanobacteria were also recorded on an artificial substratum – lime mortar, while cyanobacteria were not found on granite. All detected cyanobacteria seriously impaired the structural and aesthetic integrity of the studied monuments via mechanical and chemical actions, so their presence must not be overlooked.     

基于面提取的三维岩体点云孔洞检测与修复方法

在岩体工程中,由于扫描测量角度、障碍物的阴影和遮挡等因素,使用激光扫描仪扫描得到的岩体点云数据往往包含孔洞,影响后续三维重建的效果。现有的修复方法主要针对规则的点云数据,依据孔洞邻域信息对点云孔洞进行修复,对岩体点云孔洞的检测与修复效果欠佳,且效率低。从岩体点云数据特征出发,提出一种基于平面提取的岩体点云孔洞检测与修复算法。首先,应用一种优化的区域生长算法对岩体点云进行平面提取,然后遍历所有点云并检索其k邻域点集,将其映射至对应平面,计算邻域夹角,实现孔洞检测;最后将点云孔洞根据边界点集的对应平面数量进行分类,在对应平面上新增采样点实现点云孔洞修复。本算法通过平面提取实现了点云数据的去噪和平面拟合过程,简化后续的孔洞修复流程,降低时间复杂度。实验结果表明,与已有算法相比,本算法对大型不规则岩体点云孔洞的检测、修复准确率和运行效率更高,修复效果更佳。     

一个可积性定理的推广与应用

给出《数学分析》教材中一个可积性定理的两种推广形式，并讨论了一些特殊函数的可积性问题。     

浅议母子公司中的公司法人格否认

在现代市场经济格局中,母子公司中适用公司法人格否认制度十分必要。为了有效保护债权人利益及社会公共利益,应该深入探讨母子公司中公司法法人格否认的基本问题及实质合并原则、深石原则等,并进一步推动我国母子公司中公司法人格否认的立法工作。