多媒体学习的通道研究——三通道的界定及其内涵新解

当前对于多媒体学习的认识存在多种假说,其中"通道说"是多媒体学习领域一种非常重要的观点。文章通过对多媒体学习研究历史的分析,在众多相关理论研究的基础上,提出了"知觉、语义、动觉"多媒体学习三通道假说,并对其基本观点进行了详细分析,旨在为多媒体学习中三类学习行为的整合提供理论依据。     

可行的大学英语课堂听说一体化活动研究

新的《大学荚语课程教学要求》将培养学生的听说能力放在显著位置。本文运用Jeremy Harmer的语言输入、输出平衡理论,阐明大学英语教学必须将听力与口语教学合二为一,才能达到语言教学的交际目的。并根据笔者的教学实践,分析可行的大学英语课堂听说一体化活动。     

Generating Hypotheses and Upper-Bound Effect Sizes Using a Large Number of School Characteristics and Student Outcomes

ABSTRACT

Using a “naïve” specification, this paper estimates the relationship between 36 high school characteristics and 24 student outcomes controlling for students' pre-high school characteristics. The goal of this exploration is not to generate casual estimates, but rather to: (a) compare the size of the relationships to determine which inputs seem most promising and to identify which student outcomes appear most susceptible to being affected; (b) obtain likely upper-bound effect sizes that are useful information for power analyses used to establish minimum sample sizes for more robust designs capable of revealing causal impacts; and (c) illustrate how small effects over many outcomes (which are cumulatively important) can be easily missed. I find that most of the 36 inputs appear to have affected more outcomes than one would expect by chance, but that the apparent effects were generally small. Further, I find a higher frequency of large and significant apparent effects on educational achievement and attainment outcomes than labor market and other outcomes for young adults.     

认知语言学研究的三路径、三假设和三重心

认知语言学是上世纪80年代以来,国际理论语言学界兴起的解释语言现象的一个语言学学派或一种新的研究方法。以国内外学者的相关研究为基础,概括、梳理目前这样一门主流语言学的研究视角、工作假设和主要内容,提出认知语言学研究的三路径、三假设和三重心,这对于了解认知语言学研究的新进展、把握其未来发展走向不无启示意义。     

距离科学认识体育有多远——体育研究中几个问题的质性思考

以科学认识为视角,运用文献资料、调查访问和逻辑分析等方法,对当前体育研究中的几个问题进行了质性分析。结果表明,体育研究中存在应答域不清、科学假说理解的片面性、认识的定势、观点与方法不匹配、研究视角的偏差等问题,并提出了相应的对策。     

多类多标签汉语文本自动分类的研究

本文提出了一种高效的汉语文本分类方法 ,并在实验中收到了良好的效果。由于汉语文本的特殊性 ,在训练前对训练文本进行自动分词和降维预处理。许多文本往往可能归到多个类 ,分类算法采用改进的Boosting算法。实验表明 ,在多类多标签的汉语文本特征提取和文档分类中 ,该算法收敛快、准确性高、综合效果较好     

R&D determinants: Accounting for the differences between research and development

The determinants of R&D are an important topic of innovation studies. The classical Schumpeterian hypotheses about the influence of size and market power have been complemented with the role played by industry determinants, such as demand pull, technological opportunity and appropriability, in determining R&D investments. However, R&D has always been considered as a whole, even though research and development activities differ in many aspects. We take advantage of a new panel database of innovative Spanish firms (PITEC) to distinguish between research and development efforts of firms. We analyze the differentiated role played by traditional R&D determinants in driving research and development. Results show that demand pull and appropriability have a higher effect on development, while technological opportunity is more influential for research. Differences are statistically significant, important in magnitude, and robust to the use of different indicators for demand pull, technological opportunity and appropriability, and to several robustness checks.     

论现代大学制度建构的人性假设基础

制度建构的主体是人,制度最终所要保障和约束的也是人。因此,任何一种制度的建构都离不开对人的本质的认识。然而,由于对人性认识的有限性以及对人性假设与大学制度建构之间辩证关系研究的不足,使得大学制度的建构与社会发展之间产生断裂,从而导致了大学制度运行中的无序与失效问题的产生。通过对制度建构与人性假设之间的辩证关系为研究的切入点,揭示导致制度无序与失效的深层次根源,为社会转型时期现代大学制度的建构提供路径支持。     

克拉申“五个假说”之我见

克拉申有关二语习得的“五个假设”理论对第二语言教学模式的建立起着重要作用,但与此同时,该理论也存在着一些不完善之处。特别是在习得、学习假设、输入假设和年长与年幼学习者成功的比较三方面缺乏充分有力的论据来支持其观点,从而影响了该理论的说服力。     

浅析社会主义历史进程的逻辑

马克思科学社会主义理论提出了社会主义建立和发展的两个基本条件:一是高度发达的生产力基础,二是公有制、计划经济体制的国家形态.在现实中,社会主义首先在经济文化落后的国家取得胜利,突破了科社的第一个基本条件.根据生产关系一定要适合生产力发展的规律,改变所有制结构和计划经济体制,突破科社的第二个条件,已成为社会主义发展的历史必然.