Interpersonal dynamics and relative positioning to scoring target of performers in 1 vs. 1 sub-phases of team sports     

PT Esteves  D Araújo  K Davids  L Vilar  B Travassos  C Esteves 《Journal of sports sciences》2012,30(12):1285-1293

Abstract In this study, we examined the effects of relative positioning of attacker-defender dyads to the basket on interpersonal coordination tendencies in basketball. To achieve this aim, four right-hand dominant basketball players performed in a 1 vs. 1 sub-phase, at nine different playing locations relative to the basket (from 0° to 180°, in 20° increments). Performers' movement displacement trajectories were video-recorded and digitized in 162 trials. Results showed that interpersonal coordination tendencies changed according to the scaling of the relative position of performers to the basket. Stable in-phase modes of coordination were observed between performers' longitudinal and lateral displacements (50.47% and 43.02%) on the left side of the court. On the right side of the court, a shift in the dominant mode of coordination was observed to a defender lead-lag of -30°, both for longitudinal and lateral displacements (30.51% and 32.65%). These results suggest how information about dribbler hand dominance and relative position to the basket may have constrained attacker-defender coordination tendencies in 1 vs. 1 sub-phases of basketball.  相似文献   

PolarityRank: Finding an equilibrium between followers and contraries in a network     

Fermín L. Cruz  Carlos G. VallejoFernando Enrı´quez  José A. Troyano 《Information processing & management》2012

In this paper we present the relevance ranking algorithm named PolarityRank. This algorithm is inspired in PageRank, the webpage relevance calculus method used by Google, and generalizes it to deal with graphs having not only positive but also negative weighted arcs. Besides the definition of our algorithm, this paper includes the algebraic justification, the convergence demonstration and an empirical study in which PolarityRank is applied to two unrelated tasks where a graph with positive and negative weights can be built: the calculation of word semantic orientation and instance selection from a learning dataset.  相似文献   

How to conduct research on the inherent moral significance of teaching: A phenomenological elaboration of the standard repertory grid application     

Carlos A. van Kan  Petra Ponte  Nico Verloop 《Teaching and Teacher Education》2010,26(8):1553-1562

George Kelly’s repertory grid application seems a promising method for researching the moral significance of teaching from a ‘life world’ perspective. However, we encountered several challenges employing the repertory grid in its standard form for an inquiry into the inherent moral significance of teachers’ everyday classroom interactions. In this article we will set out in detail how, on the basis of the standard repertory grid application, we developed a repertory interview method that can be used to collect data that could foster a thorough understanding of the inherent moral significance of teachers’ day-to-day classroom interactions.  相似文献   

Interoperability and Information Integration in an Early Online Academic Digital Library of Theses and Dissertations: The Case of BTD     

Roberto Carlos dos Santos Pacheco  Vinícius Medina Kern  Paulo Henrique S. Bermejo 《International Information and Library Review》2003,35(2-4):319

Cooperative organization has been proposed as a means to improve the usefulness of virtual libraries. Information interchange among library and other academic applications is often hindered by the lack of application interoperability. This hindrance may be overcome through the development of standards that allow for digital libraries to exchange and share information with other applications. The Graduate Program in Production Engineering (PPGEP) of the Federal University of Santa Catarina (UFSC) launched its Theses and Dissertations Bank (BTD) in 1995. BTD is possibly the first online academic digital library of theses. From a digital document repository, BTD evolved into a system that combines bibliometry and informetry features. BTD is used by students and faculty in their research activities, but also by decision makers from industry and academia. They use it, respectively, to search for specialists and to measure interest and knowledge interchange among PPGEP research areas. This article presents the history, features, and development prospects for the BTD project. The integration of BTD with other academic applications, especially those of the Brazilian national science and technology platform, is emphasized.  相似文献   

Replies to the discussant's comments     

Serge Carlos 《Interchange》1970,1(3):42-44

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Urban problems: Psychological inquiries: By N.C. Kalt and S.S. Zalkind (eds.) (New York: Oxford University Press, 1976)     

Carlos Goldberg 《Int J Intercult Relat》1977,1(2):127-128

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Creation of reusable open textbooks: Insights from the Connexions repository          下载免费PDF全文

Carlos Rodriguez‐Solano  Salvador Sánchez‐Alonso  Miguel‐Angel Sicilia 《British journal of educational technology : journal of the Council for Educational Technology》2015,46(6):1223-1235

Open textbook initiatives have appeared as an alternative to traditional publishing. These initiatives for the production of alternatively copyrighted educational resources provide a way of sharing materials through the Web. While the open model of peer‐produced materials enables the global reuse of textbooks, the combination of fragments to produce new textbooks tailored to particular needs is not easy. The heterogeneity of topics and target audiences, as well as the cultural and institutional differences of educational systems across the globe, raises the need for new compositional features, fostering—at the same time—the reuse of the newly produced combinations. This paper reviews the current models of reuse and sharing, and presents a quantitative analysis of the Connexions repository which provides evidence about the culture of reuse in open textbook initiatives.  相似文献   

Homework and academic achievement across Spanish Compulsory Education     

José Carlos Núñez  Natalia Suárez  Rebeca Cerezo  Julio González-Pienda  Pedro Rosário  Rosa Mourão 《教育心理学》2015,35(6):726-746

Homework (HW) is one of the most common school-related activities among parents, students and teachers. However, the need to assign HW to students has been extensively debated. The present investigation examines the relationship between specific HW variables (i.e. amount of HW completed, time spent on HW and perceived quality of HW time management) and academic achievement, while controlling for students’ gender and grade level. Participants included 454 students (ranging from 10 to 16?years of age) from three schools in northern Spain. A multivariate analyses of variance and path analyses showed that the amount of HW completed decreased with increased schooling, as did students’ perceived quality of HW time management. Data from hierarchical regression analyses completed by path analyses provided evidence that time spent on HW conjointly with perceived quality of HW time management explains how academic achievement is mediated by the amount of HW completed. These findings deepen the understanding of the complex impact of time spent on HW and on academic achievement.  相似文献   

Global Citizenship and Global Universities. The Age of Global Interdependence and Cosmopolitanism     

Carlos Alberto Torres 《European Journal of Education》2015,50(3):262-279

This article focuses on the role of global universities and globalisations in an age of global interdependence and cosmopolitanism. Competing agendas that result from actions and reactions to multiple globalisations are considered in relation to global citizenship education. These agendas are crucial in understanding dilemmas of the local and the global in relation to education. Key emerging agendas are highlighted, including those of the hyperglobalisers, skeptics and transformationists. Three themes are central for this conversation, namely a) how multiple globalisations are impacting global life and academics, b) how networks have become privileged sites for global education, and c) the implications of globalisation and networks for global citizenship and global universities.  相似文献   

Enhanced production of thermostable laccases from a native strain of Pycnoporus sanguineus using central composite design     

Leticia I. RAMíREZ-CAVAZOS  Charles JUNGHANNS  Rakesh NAIR  Diana L. CáRDENAS-CHáVEZ  Carlos HERNáNDEZ-LUNA  Spiros N. AGATHOS  Roberto PARRA 《Journal of Zhejiang University. Science. B》2014,15(4):343-352

研究目的：优化获得血红密孔菌（P.sanguineus）的最佳培养基组成,提高耐热漆酶的产量。创新要点：获得了目前文献报道的最高水平的漆酶活力。研究方法：通过单因素试验研究了不同培养基（番茄汁、麦麸、麦芽提取物和葡萄糖细菌蛋白胨培养基）和不同组合诱导剂（大豆油、阿魏酸、没食子酸、二甲基苯胺、酸性蓝62和活性蓝19分别与硫酸铜组合诱导剂）对P.sanguineus产耐热漆酶的影响。在此基础上采用中心组合试验设计,进一步研究了番茄汁培养基结合硫酸铜和大豆油组合诱导剂对P.sanguineus产耐热漆酶的影响。利用SAS10.0和响应面分析方法对试验结果进行了统计分析和建立回归模型。重要结论：通过中心组合设计优化得出P.sanguineus产耐热漆酶的最优培养基条件：以36.8%番茄汁为培养基,以3 mmol/L硫酸铜和1%大豆油作为组合诱导剂。该条件下在10 L搅拌槽生物反应器中漆酶活力达到了143 000 IU/L（2,2＇-联氮双（3-乙基苯并噻唑啉-6-磺酸）为底物,pH值为3.0）。  相似文献