Direction-Based Adaptive Switching Filter for Removing High-Density Impulse Noise

A direction-based adaptive switching(DBAS) filter is presented for the removal of high-density impulse noise in images. The extrema detection and 28-directional detection are employed to discriminate the pixels as noisy or noise-free. If a pixel is classified as noisy, it will be replaced by a median or a mean value within an adaptive filter window with respect to different noise densities. Simulation results show that the miss-detection ratio and false-alarm ratio are both very low even at noise level as high as 90%. At the same time, better results are obtained in terms of the qualitative and quantitative measures. The peak signal-to-noise ratios increase by nearly 1 dB compared with other existing algorithms. In addition, the computation time is around 10 s for test images with resolutions of 512×512since the proposed approach has low complexity.     

浅议高师成人教育课堂教学环节的创新

要提高高师成人教育教学质量．必须根据高师成人学习的特点，改革现有的教学架构，创新教学环节，从适度张扬课堂教学环节的不确定性、体现课堂教学环节的不固定性、突出课堂教学的参与环节等三个面对传统课堂教学进行创新建构。     

数学建模对数学师范生能力培养的重要性

本文主要从分析解决问题能力、数学应用能力、计算机应用能力、自学能力、教学技能等几个方面分析数学建模课程及数学建模竞赛对数学师范生能力培养的重要性。     

Multimedia Effect in Problem Solving: A Meta-Analysis

Pictures are commonly used to represent problems. However, it is unclear how the addition of pictures affects students’ problem-solving performance. The multimedia effect in problem solving describes the phenomenon whereby an individual’s problem-solving performance is enhanced when equivalent pictures are added to illustrate or replace part of the problem text. Using meta-analytic techniques, this study sought to determine the overall size of the multimedia effect in problem solving and the possible boundary conditions (k = 51; N = 38,987; Range n = 10 – 31,842; Median n = 63). The results showed a significant small-to-medium multimedia effect size on response accuracy (Hedges’s g = 0.32) and a significant medium-to-large multimedia effect size on students’ response certainty (Hedges’s g = 0.74), but no significant multimedia effect on response time. The results for the effects of decorative pictures were not sufficient for a reliable interpretation. Representational (Hedges’s g = 0.24) and organizational (Hedges’s g = 0.52) pictures had a significant and positive impact on response accuracy, but informational or multiple pictures across studies did not have a significant aggregate effect on an individual’s response accuracy. These findings suggest that the multimedia effect in problem solving is diverse and limited by multiple boundary conditions. Further primary studies are needed to further investigate the multimedia effect in problem solving.

     

高校课堂教学与青年教师培养探究

青年教师是培养跨世纪人才的主力军,课堂教学是＂质量工程＂实施的核心阵地。受各种主客观因素的影响,高校青年教师的教学能力和教学效果却不容乐观,青年教师的教学质量成为高校教学质量的薄弱环节,提高青年教师的教学能力成为我国高等教育质量工程能否顺利推进的一个亟待解决的问题。本文尝试立足课堂教学,搭建校本培训平台,从课堂教学规范化、科学化、艺术化的角度探讨青年教师课堂教学能力提高的对策。     

高职高专“教、训、研”三位一体“双师型”教师培育机制探索——以桂林师范高等专科学校为例

建设"双师型"教师队伍既是学校面向社会需求,也是培养实用型、技能型人才的必然选择。文章探索"教、训、研"三位一体"双师型"教师培育机制,制定"双师型"教师综合培养方案,并通过实践取得了一些成果。     

化学反应速率测定实验的优化研究

文章分析了现行高中教材（人教版）化学反应速率测定实验存在的不足，从试剂、装置、实验方案等方面对实验进行了优化与改进，取得了良好效果。     

2006中国比较教育学科建设研究年度报告

中国当代比较教育在学科建设过程中践行"国际视野,本土行动"的宗旨,研究成果迅速增加,实践层面不断取得新成就。本年度报告就比较教育的性质归属、比较教育研究的目的、比较教育的研究对象、比较教育研究的方法论以及比较教育研究中的语言问题和研究人员的综合素质等方面,以2006年《比较教育研究》、《外国教育研究》、《全球教育展望》三家期刊上发表的26篇关于比较教育学科建设的论文为依据,对2006年我国比较教育学科建设研究的前沿问题和热点问题进行述评。     

解读奥运会电视转播权营销模式,展望北京奥运

从奥运会电视转播权的发展过程、有偿转让及出售状况、价格膨胀率、收入分配比例、电视转播对奥林匹克运动本身所带来的影响等方面进行探讨，旨在通过以上问题的研究，为2008年北京奥运电视转播提供理论借鉴。     

跆拳道训练对学龄儿童静态平衡能力的影响

研究目的：通过对比正常学龄儿童与跆拳道训练的学龄儿童平衡能力,以探索跆拳道训练对学龄儿童静态平衡能力的影响。研究方法：选取参加跆拳道训练的学龄儿童10名作为实验组,匹配10名无跆拳道训练、武术及其他专项练习的学龄儿童作为对照组。采用win-pod平衡功能检测系统对受试者进行单足和双足平衡能力测试。研究结果：双足睁眼或闭眼测试时,有跆拳道训练的学龄儿童与无跆拳道训练、武术及其他静力练习的学龄儿童相比静态平衡能力差异有统计学意义（P＜0.05）;在睁眼左足测试时,实验组与对照组差异有统计学意义（P＜0.05）主要体现在重心动摇轨迹长、重心平均动摇速度、Y轴动摇速度这些指标上;而在睁眼右足测试时,实验组与对照组各项指标中除了Y轴平均摆幅这项指标,其他指标在两组之间差异都有统计学意义（P＜0.05）;闭眼单足测试时,从左右足依次来看,实验组与对照组分别在Y轴动摇速度和Y轴平均摆幅差异有统计学意义（P＜0.05）。研究结论：跆拳道训练能够有效增强学龄儿童在双足和右足站立静态站立的静态平衡能力,提高站立的姿势稳定性。