A rule induction framework for the determination of representative learning design in skilled performance     

Sam Robertson  Bart Spencer  Nicole Back  Damian Farrow 《Journal of sports sciences》2019,37(11):1280-1285

Representative learning design provides a framework for the extent to which practice simulates key elements of a performance setting. Improving both the measurement and analysis of representative learning design would allow for the refinement of sports training environments that seek to replicate competition conditions and provide additional context to the evaluation of athlete performance. Using rule induction, this study aimed to develop working models for the determination of high frequency, representative events in Australian Rules football kicking. A sample of 9005 kicks from the 2015 Australian Football League season were categorised and analysed according to the following constraints: type of pressure, kick distance, possession source, time in possession, velocity and kick target. The Apriori algorithm was used to develop two models. The first consisted of 10 rules containing the most commonly occurring constraint sets occurring during the kick in AF, with support values ranging from 0.15 to 0.22. None of the rules contained more than three constraints and confidence values ranged from 0.63 to 0.84. The second model considered ineffective and effective kick outcomes and displayed 70% classification accuracy. This research provides a measurement approach to determine the degree of representativeness of sports practice and is directly applicable to various team sports.  相似文献   

The application of inertial measurement units and functional principal component analysis to evaluate movement in the forward 3½ pike somersault springboard dive     

Cherie Walker  John Warmenhoven  Peter J. Sinclair 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(2):146-162

Based on technological and analytical advances, the capability to more accurately and finitely examine biomechanical and skill characteristics of movement has improved. The purpose of this study was to use Inertial Measurement Units (IMUs) and Functional Principal Components Analysis (fPCA) to examine the role of movement variability (assessed via angular velocity), on 2 divers (1 international level; 1 national) performing the forward 3½ pike somersault dive. Analysis of angular velocity curves during ive-flight identified 5 fPCs, accounting for 96.5% of movement variability. The national diver’s scatter plots and standard deviation of fPC scores illustrated larger magnitudes of angular velocity variability across dive flight. For fPC1 and fPC3, magnitudes of SD variability were 282.6 and 201.5, respectively. The international diver illustrated more consistent angular velocity profiles, with clustering of fPCs scores (e.g., fPC1 & 3 = SD’s of 75.2 & 68.0). To account for lower variability in the international diver, the ability to better coordinate movement sequences and functionally utilise feedback in response to initiation of the somersault position is highlighted. Overall, findings highlight how both IMUs and fPCA can more holistically and finitely examine the biomechanical and skill characteristics of movement sequences with the capability to inform athlete development.  相似文献   

Efficacy of using non-linear pedagogy to support attacking players’ individual learning objectives in elite-youth football: A randomised cross-over trial     

Simon J. Roberts  James R. Rudd  Matthew J. Reeves 《Journal of sports sciences》2020,38(11-12):1454-1464

ABSTRACT

The present study examined the efficacy of a coaching curriculum, based on non-linear pedagogy, on improving attacking players’ individual learning objectives (ILOs) in elite-youth football. Participants included 22 attacking players (i.e., centre-forwards, wide-players and attacking midfield players) from a professional football academy in England. The players were randomly appointed to both control (CON) and intervention (INT) periods following baseline measures. The INT (non-linear) and CON (linear) periods were both designed to support the ILOs provided to each player as part of the elite player performance plan. The study adopted a randomised cross-over design and ILOs considered important for attacking players (i.e., strong foot finishing, weak foot finishing, 1-v-1 and decision-making) were evaluated using the Loughborough Shooting Skill Test. The results showed significant differences for INT in 1-v-1 (P< 0.02) and decision-making (P< 0.01). However, there were no significant differences for strong foot finishing, weak foot finishing or time taken. These results support non-linear pedagogy in developing 1-v-1 game play and decision-making but not for technical shooting proficiency.  相似文献   

Ebooks in Academic Libraries     

Brad Vogus 《Public Services Quarterly》2020,16(3):182-185

Abstract

The number of ebooks continues to grow in academic libraries. Ebooks have many advantages that make them attractive as a library resource. However, ebooks also have restrictions. These include use and sharing restrictions, license restrictions, and technological barriers. Some students also prefer print books for specific tasks. The following articles examine many aspects of ebooks in academic libraries, including student preference, overall ebook use, and the advantages and disadvantages of various ebook acquisition models.  相似文献   

Age Factor in Second Language Acquisition     

张浩 《海外英语》2014,(11)

In the second language acquisition, the study focus of linguistics is the influence of age factors which has always been considered as one of the most controversial issues. Some experts hold that the y...  相似文献   

论大学生信息获取技能训练学习环境的创设     

吕建辉 《现代情报》2006,26(4):187-189

创设大学生信息获取技能训练的学习环境旨在为当代大学生建造一个科学、有效的从各种信息源中广泛收集、巧妙获取各种有用信息相关技巧与能力的平台，用科学发展观的理念构建的《文献信息检索与利用技能训练课》厦其配套学习指导、辅导等，能引导学生在学习和使用信息检索技术、参与信息活动的过程中，实现知识与技能、过程与方法、情感态度与价值观等不同层面信息素养的综合提升和协调发展。  相似文献   

学习代理下中小企业知识吸收过程机理研究   总被引：1，自引：0，他引：1  

魏江  陈春丽  焦豪 《科学学研究》2007,25(Z2):381-387

学习代理已经成为中小企业知识吸收的主要来源。本研究对学习代理内涵进行了界定,明确了学习代理行为主体、学习代理内容以及知识来源。然后根据学习代理的两个阶段,提出了知识获取阶段学习代理人的三种外部代理模式以及知识分享阶段学习代理人的两种二次学习模式,对基于学习代理的中小企业知识吸收过程进行了深入剖析,最后运用华星公司案例从实践角度进行了理论验证。  相似文献   

企业并购中的知识资源整合研究     

陈龙波  赵永彬  李垣 《科学学与科学技术管理》2007,28(7):97-102

获取知识资源是当今企业兼并收购的一个重要目的。知识资源的战略重要性决定了知识资源整合是企业兼并收购后的重要工作内容。只有对知识资源进行有效整合才能够促进协同效应的发生，提高并购企业的核心竞争能力和绩效水平。知识资源整合主要包括组织整合、人力资源整合、管理流程整合、市场整合和文化整合等五个方面的内容。  相似文献   

政治关联与商业模式创新：吸收能力的调节效应     

曾萍  黄紫薇  汪金爱 《科研管理》2020,41(4):151-159

针对企业构建政治关联能否激发以及怎样激发商业模式创新的问题，本文构建了政治关联在吸收能力调节下影响商业模式创新的理论模型。以384家企业为样本进行的实证检验表明：企业构建政治关联能够激发商业模式创新，知识消化能力强化了政治关联对商业模式创新的积极影响，但知识获取能力却削弱了政治关联对企业商业模式创新的积极影响。这些发现一定程度揭示了企业政治关联影响商业模式创新的内在机制，区分了不同维度吸收能力的调节效应差异，对企业商业模式创新理论与实践的发展起到了促进作用。  相似文献   

市场营销管理中原始信息的收集     

邬晓鸥 《情报理论与实践》2004,27(1):59-61

对原始信息在营销管理中的作用进行了分析，概述了原始信息收集工作的要求，介绍了收集原始信息的3种主要方法：观察法、调查法和试验法。  相似文献