Implementing Problem-Based Learning in Principal Training： The First Pilot Program in China     

Daming Feng 《美中教育评论》2005,2(3):13-19,12

In designing and implementing the pilot program of serving principal training, the author of this paper learnet the experience from what E. Bridges and E Hallinger did but didn＇t imitate fully, rather, created several new strategies because Chinese principals faced different situation from their American counterparts. The pilot program introduced and implemented the Problem-Based Learning （PBL） approach. The outcome of this pilot program shows： （1） PBL is a promising approach to serving principal training in China in casting off the traditional ＂chalk and talk＂ lecture approach. （2） The actual learning of trainees will happen prior to the classroom sessions if a trainer lets trainees participate the process of problem identification in pre-training stage. （3） PBL approach is much welcome and strong supported by local government and policymakers when the focal problem is related to implementation of current local nolicv.  相似文献   

对西部大开发中体育产业化基本问题的再认识   总被引：3，自引：1，他引：2  

黄晓华  许惠玲 《体育学刊》2002,9(4):17-19

体育在西部大开发中有着特定的任务和作用。体育产业化是市场经济条件下西部大开发中体育发展的必由之路。市场经济体制下西部大开发的本质是推进经济发展的市场化，而体育产业化可以促进体育增长方式的转变，提高体育的整体效益，进一步优化体育的经济结构和促进体育市场经济体制的建立。体育产业化的实质在于发展体育市场经济，构成新的体育产业体系。体育产业具有其基本特征。  相似文献   

短跑教学中如何发挥教师的主导性和学生的主体性     

杨学军  李兴锱  司虎克  黄顺章  王兴 《上海体育学院学报》1993,(4)

采用调查与实验对比的方法,论述了短跑教学中有利于发挥教师的主导性和学生的主体性的几个操作步骤。  相似文献   

发挥主体作用提高课堂效率     

张文华 《南京体育学院学报(社会科学版)》2003,17(6):161-162

倡导学生主体,加强自主性教学,提高课堂效率,正是当前教学改革的主旋律,我们正是抓住这一场教改的契机,在体育教学上研究如何发挥学生的主体作用,运用选修课的形式,引导学生主动学习,主动锻炼,既学到了运动技能,增强了体质,又促进了他们逐渐形成了高尚的趣味和健康的人格。  相似文献   

一种平面四连杆机构轨迹综合的新方法     

楼进 《上海海事大学学报》1994,(4)

根据平面闭合曲线切线象理论，定义了切线全旋转角的概念，提出并论证了一种用曲线的曲率关于切线全旋转角的函数和进行平面四连杆机构轨迹综合的新方法。这是一种可应用于工程设计的几何系统分析法。  相似文献   

基于匹配点逐层过滤的岩体点云配准方法     

张韬  肖俊  王颖 《中国科学院大学学报》2022,39(3):352-359

岩体点云配准是岩体三维重建与分析的基础。经典的点云配准方法虽然能够很好地适用于普通点云,但对于岩体点云并不能获得足够的精度。由于岩体点云表面结构复杂,且大部分区域为平面,基于岩体点云的这些特点,提出通过几何特征逐层过滤匹配点的岩体点云配准算法,引入匹配点对的协方差矩阵的特征值和特征向量矩阵,以及曲率、主方向等几何特征逐层过滤匹配点对,精确地找到匹配点对。在不同岩体点云上的实验测试与分析结果表明,该算法在准确度上有明显优势。  相似文献   

Writer identification approach based on bag of words with OBI features     

Amal Durou  Ibrahim Aref  Somaya Al-Maadeed  Ahmed Bouridane  Elhadj Benkhelifa 《Information processing & management》2019,56(2):354-366

Handwriter identification aims to simplify the task of forensic experts by providing them with semi-automated tools in order to enable them to narrow down the search to determine the final identification of an unknown handwritten sample. An identification algorithm aims to produce a list of predicted writers of the unknown handwritten sample ranked in terms of confidence measure metrics for use by the forensic expert will make the final decision.Most existing handwriter identification systems use either statistical or model-based approaches. To further improve the performances this paper proposes to deploy a combination of both approaches using Oriented Basic Image features and the concept of graphemes codebook. To reduce the resulting high dimensionality of the feature vector a Kernel Principal Component Analysis has been used. To gauge the effectiveness of the proposed method a performance analysis, using IAM dataset for English handwriting and ICFHR 2012 dataset for Arabic handwriting, has been carried out. The results obtained achieved an accuracy of 96% thus demonstrating its superiority when compared against similar techniques.  相似文献   

课改背景下农村中小学校长的新思维     

贾兴洪  董桂良 《河南职业技术师范学院学报(职业教育版)》2004,(4):68-70

农村中小学在新课改的进程中面临诸多问题,其解决的关键在校长。在新课改背景下农村中小学校长应具有新思维,即清晰的发展战略观、正确的教育资源观、客观的学生观,以推动新课改实践在农村地区的深入与发展。  相似文献   

以能力本位为核心的高职自动控制原理课程改革     

左希庆  刘恒娟  钱振华 《张家口职业技术学院学报》2007,20(3):40-41

本文首先介绍了国内自动控制原理课程的现状，研究了高职自动控制原理课程存在的问题，提出了以能力本位为核心的高职教学课程体系和教学方式，并在高职院校进行了初步的实践。最后对该课程的改革实践效果进行了阐述。  相似文献   

Coordination pattern of baseball pitching among young pitchers of various ages and velocity levels     

Hsiu-Hui Chen  Chiang Liu  Wen-Wen Yang 《Journal of sports sciences》2016,34(17):1682-1690

This study compared the whole-body movement coordination of pitching among 72 baseball players of various ages and velocity levels. Participants were classified as senior, junior, and little according to their age, with each group comprising 24 players. The velocity levels of the high-velocity (the top eight) and low-velocity (the lowest eight) groups were classified according to their pitching velocity. During pitching, the coordinates of 15 markers attached to the major joints of the whole-body movement system were collected for analysis. Sixteen kinematic parameters were calculated to compare the groups and velocity levels. Principal component analysis (PCA) was conducted to quantify the coordination pattern of pitching movement. The results were as follows: (1) five position and two velocity parameters significantly differed among the age groups, and two position and one velocity parameters significantly differed between the high- and low-velocity groups. (2) The coordination patterns of pitching movement could be described using three components, of which the eigenvalues and contents varied according to age and velocity level. In conclusion, the senior and junior players showed greater elbow angular velocity, whereas the little players exhibited a wider shoulder angle only at the beginning of pitching. The players with high velocity exhibited higher trunk and shoulder rotation velocity. The variations among groups found using PCA and kinematics parameter analyses were consistent.  相似文献