The impact of physiological load on anticipation skills in badminton: From testing to training     

D. B. Alder  D. P. Broadbent  J. Stead  J. Poolton 《Journal of sports sciences》2019,37(16):1816-1823

Research remains unclear on the impact of physiological load on perceptual-cognitive skills in sport. Moreover, no study has examined the training of perceptual-cognitive skills under physiological load. The current study comprised two phases. Firstly, we examined the impact of badminton-specific physiological load on anticipatory skills in expert badminton players (n = 13), including key underlying mechanisms, such as gaze behaviour. Under high physiological load, participants displayed less efficient visual search behaviour and showed a reduction in response accuracy. Secondly, we examined the effects of combining perceptual-cognitive simulation training with the high physiological load. Ten of the expert badminton players were assigned to a combined training group, where the simulation training and the physiological load intervention occurred simultaneously or an independent training group, whereby the two components were completed independently. The combined training group showed a positive change in the efficiency of their visual search behaviours compared to the independent training group, but no significant performance improvements were found. Overall, findings demonstrate that high physiological load is detrimental to experts’ anticipatory skills. However, combining perceptual-cognitive simulation training with high physiological load can potentially negate these debilitating effects.  相似文献   

Neural embedding-based indices for semantic search     

Fatemeh Lashkari  Ebrahim Bagheri  Ali A. Ghorbani 《Information processing & management》2019,56(3):733-755

Traditional information retrieval techniques that primarily rely on keyword-based linking of the query and document spaces face challenges such as the vocabulary mismatch problem where relevant documents to a given query might not be retrieved simply due to the use of different terminology for describing the same concepts. As such, semantic search techniques aim to address such limitations of keyword-based retrieval models by incorporating semantic information from standard knowledge bases such as Freebase and DBpedia. The literature has already shown that while the sole consideration of semantic information might not lead to improved retrieval performance over keyword-based search, their consideration enables the retrieval of a set of relevant documents that cannot be retrieved by keyword-based methods. As such, building indices that store and provide access to semantic information during the retrieval process is important. While the process for building and querying keyword-based indices is quite well understood, the incorporation of semantic information within search indices is still an open challenge. Existing work have proposed to build one unified index encompassing both textual and semantic information or to build separate yet integrated indices for each information type but they face limitations such as increased query process time. In this paper, we propose to use neural embeddings-based representations of term, semantic entity, semantic type and documents within the same embedding space to facilitate the development of a unified search index that would consist of these four information types. We perform experiments on standard and widely used document collections including Clueweb09-B and Robust04 to evaluate our proposed indexing strategy from both effectiveness and efficiency perspectives. Based on our experiments, we find that when neural embeddings are used to build inverted indices; hence relaxing the requirement to explicitly observe the posting list key in the indexed document: (a) retrieval efficiency will increase compared to a standard inverted index, hence reduces the index size and query processing time, and (b) while retrieval efficiency, which is the main objective of an efficient indexing mechanism improves using our proposed method, retrieval effectiveness also retains competitive performance compared to the baseline in terms of retrieving a reasonable number of relevant documents from the indexed corpus.  相似文献   

读《忧郁的热带》有感     

袁丽 《佳木斯教育学院学报》2014,(12):22-23

克洛德?列维?斯特劳斯在《忧郁的热带》中详尽描述了卡都卫欧、波洛洛、南比克瓦拉等几个最原始部落里情趣盎然,寓意深远的思考历程与生活体验。该书最早出版于1955年,学界公认其为一部对促进人类自我了解具有罕见贡献的人类学、文学、人类思想杰作。  相似文献   

Learner self-efficacy,goal orientation,and academic achievement: exploring mediating and moderating relationships     

Toni Honicke  Matthew Fuller-Tyszkiewicz 《高等教育研究与发展》2020,39(4):689-703

ABSTRACT

Within the context of Pintrich’s self-regulated learning model, recent reviews of the literature show that motivational factors are the strongest predictors of academic performance. Even so, gaps remain in terms of which goal orientation constructs area most strongly related to performance, and whether academic self-efficacy is involved in such relationships, either as mediator or moderator. This study addresses these gaps using a sample of 478 university students; 409 females aged 17–62 (M?=?23.28, SD?=?7.22) and 69 males, aged 18–47 (M?=?22.5, SD?=?6.31). Analyses revealed that academic self-efficacy (ASE) mediated relationships between both mastery and performance-approach goal orientation with achievement, though the mediation effect was larger for the relationship involving mastery approach goal orientation. ASE did not moderate the relationship between performance-approach goal orientation and achievement. Findings suggest teaching programmes should foster learning environments that encourage persistence and effort when learning, and consider how course delivery and feedback can enhance academic self-efficacy, regardless of the goal orientation adopted by students.  相似文献   

机构知识库研究回顾与展望   总被引：1，自引：0，他引：1  

田玉晶 《大学图书情报学刊》2008,26(5):87-90

概述了国内机构知识库研究的现状,理清了国内机构知识库研究的发展脉络,指出其存在的有关问题,探讨了机构知识库研究的发展方向。  相似文献   

对高校本科教学工作水平评估方案与高校图书馆新规程的评析     

白群 《大学图书情报学刊》2008,26(6):7-10

作为共同指导和规范高校图书馆工作及其关系的《普通高等学校本科教学水平评估方案（试行）》,其中对图书馆评估的指标体系与《普通高等学校图书馆规程（修订）》之间应是竟合,而不应不和谐。文章针对《方案》与《规程》不和谐的事实,分析了产生不和谐的原因及法律后果,提出了解决办法。  相似文献   

谈博客（Blog）资源的信息组织   总被引：1，自引：0，他引：1  

吴昌合  叶丹 《大学图书情报学刊》2008,26(4):49-52

Blog从产生开始,就给整个互联网世界的交流方式带来了一场新的革命,它作为一种新的网络信息组织方式,是一个十分值得研究的课题。文章探讨了Blog资源的三种信息组织方式,并分析了传统的分类法与主题法在Blog资源组织中的应用。  相似文献   

关于高校图书馆机构设置的探讨   总被引：1，自引：0，他引：1  

杨勇 《大学图书情报学刊》2008,26(2):17-19

文章分析了大学图书馆现有机构设置的现状和不足,提出应从文献信息的整体和图书馆功能的整体着眼,规划全新的高校图书馆组织机构,并对其特点进行了具体的说明。  相似文献   

核心期刊概念的演变及影响     

周向华 《大学图书情报学刊》2008,26(1):87-90

文章对核心期刊概念的产生及其演变进行概述,对我国核心期刊遴选体系与方法进行了介绍,提出科学理解、构建、使用核心期刊的建议。  相似文献   

云南省高校图书馆外文网络电子资源共建共享的理论与实践     

杨丽娟 《大学图书情报学刊》2008,26(6):44-49

从实现高校电子资源共建共享的角度探讨信息资源共建共享理论,阐述了云南省高校图书馆外文网络电子资源共建共享的组织与实施,并分析研究了云南省高校图书馆外文网络电子资源共建共享的模式和使用效益。  相似文献