两个几何极值问题的证明及运用推广     

吴湘云 《楚雄师范学院学报》2006,21(12):53-55

本文主要给出两个几何极值问题的证明及运用推广。  相似文献   

世居少数民族传统节庆体育与民族文化认同——来自中越边境左州镇壮族“金山节”的田野调查     

王成科  宋晓宇  黄梅 《南宁师范高等专科学校学报》2012,(1):28-30

对中越边境的世居少数民族壮族进行问卷调查。结果显示,壮族传统节庆体育文化和壮族传统文化对于世居中越边境的壮族群众的民族文化认同仍然保持较深的影响力。  相似文献   

基于数字水印的多媒体教学资源保护     

王冰 《海南广播电视大学学报》2012,(3):150-153

将数字水印用于数字化音视频产品的版权保护,弥补了传统的数据加密方式的不足,成为数字版权管理的有效手段。传统加密技术在数字版权保护中存在的问题是,数据一旦被解密,数字内容就可以非法复制和传播。因此提倡将版权信息作为水印加入数字作品的多媒体教学资源保护策略。一  相似文献   

我国男子越野滑雪运动员选材指标体系的构建与评价模型的研制     

黄玺章  赵可伟  陈超  刘江山  王钢 《武汉体育学院学报》2021,55(1):87-94

目的：构建男子越野滑雪运动员选材指标体系,研制选材标准的评价模型。方法：问卷调查、专家访谈、实验测试、数理统计等。结果：（1）构建了11~12岁、13~14岁、15~16岁、17~18岁四个年龄组的男子越野滑雪运动员选材指标体系,其中4项身体形态指标包括下肢长B/身高、体脂百分比、年龄-骨龄、指间距-身高;2项身体机能指标为最大摄氧量相对值、血红蛋白;5项运动心理指标包括反应时、速度知觉、意志品质量表、注意力测试、操作思维;10项运动素质指标包括上肢爆发力、纵跳、3 000 m跑、立位体前屈、闭眼单脚站立、立定跳远、20 m冲刺、引体向上、六边形跳、功能动作筛查（FMS）;3项专项成绩指标包括雪上计时1.2 km、5 km、10 km。（2）选材评价模型集成于Web端自动化评估软件,基于越野滑雪运动员选材指标体系与评价标准表,通过百分位数法建立的“P60入围”与“P90精英”两条临界线,评价模型回代检验结果客观有效。结论：我国男子越野滑雪运动员选材指标体系涵盖4个年龄组,包括5项一级指标、15项二级指标、24项三级指标,并依据不同指标权重研制评价模型,为创新越野滑雪项目的精英运动员选拔方法提供理论依据。  相似文献   

论我国的著作权保护期限没有必要延长之原因     

杨卓黎 《怀化师专学报》2013,(8):43-44

对著作权的保护是一种对私权进行保护,在立法过程中,立法者应当保持著作权人利益和社会公共利益的平衡,从而设定具体的规则对著作权进行保护和限制。纵观世界各国,延长著作权保护期限已成为发达国家的立法趋势,对此我国学界开始对是否应当延长我国著作权保护期限产生了探讨。但一项法律的修订,更应考虑本国国情,综合权衡各项原因,可得出我国著作权保护期限没有延长之必要。  相似文献   

Towards new understandings of learning disability     

《Africa Education Review》2013,10(2):318-328

Abstract

This article highlights inherent difficulties in defining learning disability, particularly in South Africa. It traces the evolution of the category from ‘minimal brain damage’ through to the more current ‘learners with special educational needs’ and ‘learners with barriers to learning.’ Different definitions or attempts to describe the phenomenon ‘learning disability’ are reviewed. An overview of the current international research in the field is provided with particular reference to research that attempts to define learning disability. Much of this research is framed within the medical model, which has as its foundation positivism and empiricism. This results in research which is deficit-focused; in other words the focus is on pathology. A second reductionist model fragments the phenomenon of learning disability into discrete units, each of which is researched. It is suggested that, in re-thinking learning disability, the focus shifts away from the deficit, pathology based, reductionist focus currently held across disciplines.

The problem inherent in including the notion of ‘discrepancy between potential and performance’ in any definition is discussed, with particular reference to the measurement of ‘potential in South Africa's multicultural and multilingual learner population. The article ends with a proposal that there be a shift in focus to a panoptic view of the child: a view that takes in his strengths and talents. In so doing, the country may be better able to serve this growing population.

With the national shift towards inclusive education, there is a renewed focus on learners euphemistically called learners with special educational needs or the more ‘in vogue’ learners with barriers to learning. Yet what we mean when we bandy these terms about, how well we understand these learners, is questionable. The focus of this article is that sub-group of learners that educators and parents think are just not achieving as they should be achieving, despite themselves, that sub-group we identify as having ‘potential’ but not ‘performance’; that sub-group that we just cannot quite explain, we just cannot quite understand; that sub-group for whom support ranges from placement to pills to punishment!

This article critically evaluates the current understanding of the phenomenon of learning disability as it is understood in the South African context. It begins with an overview of the international research, with particular reference to the notion of definition. Thereafter, it makes comments on the term as it is used in South Africa. In conclusion, the article proposes the need for an alternative understanding of this group of learners.  相似文献   

项目教学法在《天然宝玉石检验》项目课程中的实践     

杨满珍 《深圳职业技术学院学报》2013,12(3):81-84

文章探讨了天然宝玉石检验项目课程在教学过程中如何运用项目教学法,从创设职业情境、设计资讯环节、引入企业实际项目入手,将实际工作任务转化为课堂教学任务,检查与评估环节引入企业评价和小组评价,全面评价学生学习成果,提高学生综合素质．  相似文献   

普通话态度语音的感知实验研究     

卢琰  维罗尼克·欧贝吉  阿尔贝·里亚尔  顾文涛 《南京师范大学文学院学报》2013,(3):169-174

在言语交际中,说话人的情绪(emotions)属于不自主控制的潜在的心理状态,而说话人表达的态度(attitudes)或者称社会情感(social affects)则是说话人自主控制的。本文通过听辨实验,研究了中国人对普通话19类态度语音的感知特性。实验采用条件受控的语音语料,考察了态度类别、话语长度、听辨人性别这三个因素对态度辨识率的影响,以及不同态度类别在听感上的混淆模式与聚类关系。实验结果表明,普通话态度语音的辨识率总体上高于机遇水平,其中"陈述"和"失望"的辨识率最高,"自信"的辨识率最低。态度类别的主效应、态度类别与话语长度的交互效应,是影响态度辨识率的主要因素。基于听辨混淆模式进一步做层次聚类分析后发现,19种态度从语音感知上可大体聚类为7组,同组内的态度在认知上表现出一定的关联性。  相似文献   

Security and Uses of the Internet     

Donald Chvatal 《期刊图书馆员》2013,64(1-2):105-119

  相似文献   

Protecting Open Access to Taxpayer-Funded Research: The Rise and Defeat of the Research Works Act     

Rebecca Chadwick 《期刊图书馆员》2013,64(3-4):296-304

The library community has long been an advocate of free access to publicly funded research, yet Congress regularly considers bills that would prevent the public from accessing such information. In an age where bills such as Stop Online Piracy Act (SOPA) and Protect IP Act (PIPA) are brought forth only to receive heavy criticism from all parts of society, this article investigates the potential impact the Research Works Act (RWA) might have caused on academic publishing. While the RWA was defeated, similar pieces of legislation will rise again. As librarians, we must be aware of such acts to prevent the damage they seek to impose.  相似文献