校本管理:理念与模式

校本管理是一场国际性学校管理改革运动,强调学校对校内的人事、课程和财务的决策权,学校有关成员的决策参与以及决策者对决策和决策的执行负责;其基本理念是把学校作为真正的办学和管理的主体,发挥学校成员的积极性、自主性和创造性,提高教育的质量和效率;校本管理实施的基本模式有行政控制、专业控制、社区控制和平衡控制等四种模式。校本管理对深化我国学校管理改革具有重要的参照意义。     

基于自适应网络的高校数字图书馆知识服务用户模式整合研究

对自适应网络环境下图书馆开展知识服务时个性化推荐的用户模型构的构建进行研究,对用户整合模型的整体构架和实现方式等进行描述,尤其是对基于上下文环境的广义、通用的用户整合模型进行研究。     

国内技术接受研究:特征、问题与展望

文章采用内容分析法对国内2003年至2016年发表的464篇技术接受研究文献进行分析。根据文献的内容特征,构建了文献类型、研究主题、实证研究三类内容分析编码表,基于此对文献进行编码及统计分析。研究发现:①国内技术接受研究呈现逐年递增的趋势;②技术接受研究呈现学科交叉的趋势,学者在不同的领域应用技术接受理论和模型,推动了技术接受研究的发展;③技术接受理论模型具有普适性和可拓展性,适用于不同领域新技术用户的技术接受和使用意愿研究,同时不断吸纳与领域相关的新要素;④ 实证研究是该领域的主流研究途径,新变量和新理论的融入与拓展及新模型的构建是研究的主要模式;⑤当前技术接受的实证研究存在一定的问题,如理性思考缺失、研究方法单一、中介变量及调节变量的忽略、技术接受理论本身研究的弱化等。随着新技术的不断涌现,技术接受理论的应用领域将不断扩大,研究方法将日趋多元,不断推动具有领域特征的整合模型的提出。此外,技术接受理论本身的研究也将得到加强。图3。表12。参考文献46。     

医药科技期刊在应对SARS和COVID-19中出版模式与关注领域比较分析

利用中国知网数据库对2003年SARS疫情期间以及2020年COVID-19疫情期间科技期刊在助力疫情防控阻击战中的出版模式和关注领域进行了比较,着重从出版效率、发文结构、发文质量等角度进行了对比分析,并结合存在不足提出建议。结果显示,经过17年的发展中国科技期刊在应对突发公共卫生事件上已有了长足的进步,在国际疫情形势仍旧严峻的当下,要不断创新出版模式,继续坚定信心、提升能力,助力全球抗疫合作。     

体育新词汇的产生及其意义使用的延展性简

体育新现象的出现推动了体育新词语的产生,体育新词语的产生及其在意义上的延伸在遵循语言学造词规律的同时又有其独特的构造模式和构造方法,这一类体育新词的出现不仅丰富了汉语的词汇数量,扩大汉语新词的应用范围,而且促进了人们对于该类体育现象的了解。     

国际碳排放期权套期保值分析:以EU ETS为例

运用随机扩散模型研究EU ETS碳排放期货交易的套期保值。利用欧洲气候交易所(ECX)交易的欧盟排放配额(EUA)期权数据估计Black-Scholes、Heston模型和跳跃扩散模型参数,比较随机波动模型、BS模型和跳跃扩散模型拟合市场EUA期权价格、隐含波动率误差。实证研究表明:Heston随机波动模型更好地刻画EUA期权数据特征;最后给出DEC10期权合约基于Heston模型的套期保值曲面。     

Online Versus Offline in the United States: Are the Media Shrinking?

We find that combined revenues for 10 major media in the United States have steadily declined as a proportion of overall economic activity or gross domestic product (GDP) from 1999 to at least 2009 (the latest year for which we have complete data). For individual media, we find a generally consistent pattern in which increasing revenues from Internet distribution are exceeded by declines in revenues from established distribution channels, with the exception of television and video games, whose revenues have so far kept pace with GDP. We also report a marked overall shift from advertiser to direct payment support for the media industries over this period. We consider four possible reasons for these revenue trends: shifts in consumer media usage, reduced appropriability due to more difficult copyright protection, inadequate advertising business models, and reduced costs due to more efficient Internet distribution. Our analysis suggests we may be entering an era of a declining size of media industries in terms of conventional measures, but not necessarily a falling supply of media products themselves.     

Relevance-based language modelling for recommender systems

Relevance-Based Language Models, commonly known as Relevance Models, are successful approaches to explicitly introduce the concept of relevance in the statistical Language Modelling framework of Information Retrieval. These models achieve state-of-the-art retrieval performance in the pseudo relevance feedback task. On the other hand, the field of recommender systems is a fertile research area where users are provided with personalised recommendations in several applications. In this paper, we propose an adaptation of the Relevance Modelling framework to effectively suggest recommendations to a user. We also propose a probabilistic clustering technique to perform the neighbour selection process as a way to achieve a better approximation of the set of relevant items in the pseudo relevance feedback process. These techniques, although well known in the Information Retrieval field, have not been applied yet to recommender systems, and, as the empirical evaluation results show, both proposals outperform individually several baseline methods. Furthermore, by combining both approaches even larger effectiveness improvements are achieved.     

A cross-cultural comparison of expectations in romantic relationships: India and the United States

ABSTRACT

This research investigated romantic expectations in a cross-cultural comparison of India and the United States (US). The study was grounded in expectancy violations theory (EVT), which argues that expectancies are a universal phenomenon whose content is influenced by communicator, relational, and contextual factors. The expectations of romantic partners in the two countries were assessed in conjunction with relational models, sex, and gender roles in a cross-sectional study (N?=?366). Results indicated that romantic partners from the two countries placed different importance on specific expectations. Furthermore, expectations were successfully predicted by one’s culture, relational models, sex, and gender roles.