基于PBL教学模式的岩体力学课程教学改革

根据贵州大学地质工程专业的授课难题,引入PBL教学模式,旨在加强以学生为小组的团队合作以及对于各种工程实例的学习,通过成果交流展示及相互评价分析,为岩体力学课程建设案例库提供丰富有效的资料,提高学生利用岩体力学知识分析问题和解决问题的能力。     

Optimal Design for Two-Level Random Assignment and Regression Discontinuity Studies

An important concern when planning research studies is to obtain maximum precision of an estimate of a treatment effect given a budget constraint. When research designs have a multilevel or hierarchical structure changes in sample size at different levels of the design will impact precision differently. Furthermore, there will typically be differential costs of enrolling additional units at different levels of the hierarchy. The optimal design problem in multilevel research studies involves determining the optimal sample size at each level of the design given specified design parameters and a specified marginal cost of recruitment at each level. The current work extends existing results by considering optimal design for (a) unbalanced random assignment designs and (b) regression discontinuity designs.     

试析联合国海洋法公约中的岛屿制度

《联合国海洋法公约》第121条对岛屿问题做出了规定,但极为原则和简单,导致适用的困难。结合中日之间关于“冲之鸟岛”的争议,对《公约》的岛屿制度进行探讨因此显得尤为重要。     

According to Plan? Examining the Intended and Unintended Treatment Effects of EL Classification in Early Elementary and the Transition to Middle School

Abstract

Research has demonstrated that classification as an English learner (EL) is consequential for students, with important effects on educational achievement and attainment. Yet we know little about the mechanisms that underlie the effects of EL classification. This study explores whether, and to what extent, EL classification results in the treatments it is designed to trigger, and also whether, and to what extent, EL classification triggers unintended treatments. The study uses longitudinal school district data and regression discontinuity analyses to evaluate the treatment effects of EL classification. It examines two moments: initial classification as students enter kindergarten, and retained EL classification as students transition into middle school. Findings suggest that EL classification, for students near the margin of classification, results in many treatments it is intended to trigger including language assessments in early elementary, and English language development instruction and modified content instruction in middle school. In addition, findings show that EL classification triggers two unintended treatments among students; Classification limits access to English speaking peers in early elementary, and negatively impacts enrollment in a full academic course load in middle school.     

含水岩石的弱化与水库地震

本文通过实验确定了砂岩在干燥、饱水、有孔隙压三种情况下的摩尔破裂准则线(摩尔包络线);定量地说明了砂岩的弱化,并以此阐明水库地震的发生过程及其特点,指出了以往应力分析中的疏漏,指出含水岩石的弱化是水库地震等水诱发地震的首要的影响因素。     

高校攀岩运动员身体素质相关指标的监测与研究

通过文献资料法、调查访问法、测量法和数理统计法,建构高校攀岩运动员身体素质评价基本结构模型。研究可知,高校攀岩运动员的身体素质主要受五个因子的控制;身体素质综合评价模型能比较客观、全面地评定出运动员的身体素质训练水平,为今后运动员的运动训练及运动员选材提供科学依据。     

石刻造像体育遗迹与体育文化关系研究

我国的石刻造像中有许多关于体育方面的历史遗迹,通过文献资料等方法对其进行深入研究发现：石刻造像与体育文化有着密切的关系。石刻造像是古代体育遗迹的重要载体。对石刻造像体育遗迹的研究可以规范古代体育研究手段,石刻造像上所表现出的体育内容可以增强现今的体育文化归属感与保持当今我国体育文化的多元性。而对石刻造像进行体育文化元素...     

期刊文献分布特征的分析

以1999-2003年生物技术学科期刊文献分布曲线为依据,利用知识密度梯度graduR(n)的概念,对知识场中文献分布特征进行分析。结果表明,在任何一个学科的知识场中,集中区文献分布呈间断性变化,离散区文献分布呈连续性变化,从而构成期刊文献分布的基本特征。基于此,指出期刊文献分布特征研究是对文献分布规律的进一步描述。     

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.     

古代蒙古人的岩石崇拜及其象征寓意

岩石崇拜是蒙古人原始崇拜的重要组成部分．它与对苍天、火、灵魂、神灵崇拜相关的象征寓意是天使之石，天力之表征；火种之源．火神之表征；灵魂之体．灵魂之石；神灵化之石，人格化之石。总之，对岩石的崇拜反映了古代蒙古人的思维特征，同时，岩石崇拜的象征寓意也反映了他们的自然观、哲学观、生活观与审美观/