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951.
Recent research has addressed the extent to which group communication exhibits intrapersonal and interpersonal characteristics. The most defensible and reasonable view appears to be that group interaction exhibits characteristics that fall somewhere in between, with group interaction revealing evidence of both individual- and group-level processes. Latent group and multilevel approaches were utilized to examine the use of functional communication in product design teams, across a series of tasks. The findings provided additional evidence for this middle road, or convergence approach, in that group members’ roles, as well as the function of discussion contributions, significantly varied across time, and at both levels of analysis. 相似文献
952.
953.
数据仓库的研究与发展现状 总被引:1,自引:0,他引:1
数据仓库技术是数据库与人工智能两项计算机技术相结合的产物,是当今信息管理技术的主流,它利用人工智能中的机器学习、知识处理和神经网络等方法,从数据库中挖掘有用信息、发现知识、搞清数据库中大量数据之间的相互关联及众多数据之间存在的规律,可供使用有效分析和利用数据库中的已存储的各种有用信息,以帮助决策迅速做出决策,从而使企业产生巨大的经济效益,章介绍了现有的数据仓库工具,以期给国内数据仓库的开发提供一定的参考,并通过总结国内数据仓库市场的不足之处,给出解决的办法,最后找出国内数据仓库市场的新动向. 相似文献
954.
Middle matching mining algorithm 总被引:1,自引:0,他引:1
郭平 《重庆大学学报(英文版)》2003,2(2)
1. Introduction With the increase in the amount of information, we feel the pressure from 搕he exploring information? and find that we are in a dilemma of having huge data but with little knowledge [1]. Data mining is an effective method to help us to get rid of the morass, and is a process of inferring knowledge from such huge data. A sequence is an ordered list of transactions (or itemsets), in which each transaction is a set of items. Typically there is a transaction-time associated with ea… 相似文献
955.
This article continues a theme of previous investigations by the authors and examines the focus of in-action reflection as a component of professional judgement and decision-making (PJDM) processes in high-level adventure sports coaching. We utilised a thematic analysis approach to investigate the decision-making practices of a sample of high-level adventure sports coaches over a series of sessions. It was discovered that adventure sports coaches utilise a combination of questioning and observation to collect and constantly verify the information that forms the basis of their PJDM. Each coach responds to matters of immediate security, collecting information until a best-fit decision can be made regarding changes to the environment, task or individual. Implications for professional training, accreditation and development are presented against these data, offering a template for a more expertise-focused progression in the adventure sports coaching profession. 相似文献
956.
李西营 《河南职业技术师范学院学报(职业教育版)》2007,(1):66-69
从理性和非理性这一新的视角可以把国外职业决策理论分为2类6种,在对国外职业决策理论存在的问题进行全面分析的基础上可以对国外职业决策理论的发展进行展望,但如何使理论与实践结合仍是难点。 相似文献
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958.
Siobhán Dunne 《New Review of Academic Librarianship》2016,22(4):410-429
The objectives of this study were to identify how, when, and where students research; the impact of learning environments on research productivity, and to recommend improved supports to facilitate research. An ethnographic approach that entailed following five students in the final six weeks of their program enabled deep level analysis. The study examined the practice of undergraduate research inside and outside the library walls and found that the research process can be influenced by a number of factors including age, experience, work commitments, family, peer, academic, and library support. Mobile research is continuing to grow among undergraduate students, particularly those juggling family and work commitments. The research suggests a correlation between intercultural issues such as ethnicity and language with library anxiety. Until they had immersed themselves in the research process, most of the students in this study believed that research was a linear process. 相似文献
959.
Peter C. Rouse Joan L. Duda Nikos Ntoumanis Kate Jolly Geoffrey C. Williams 《European Journal of Sport Science》2016,16(1):106-114
This study describes the development and psychometric characteristics of an observational instrument that examines four aspects of interpersonal support (or lack of) provided during physical activity (PA) promotion consultations (i.e., Autonomy Support, Involvement, Structure and Interpersonal Control), as identified by Self-determination Theory (SDT). The reliability and validity of the Interpersonal Support in Physical Activity Consultations Observational Tool (ISPACOT) were examined within an exploratory randomised control trial. Recorded consultations (N = 42) conducted by qualified PA advisors (N = 14) at 13 leisure centres across the West Midlands (UK) were rated. Intra-class correlation coefficients (ICC) indicated moderate to high inter-rater reliability for overall interpersonal support (0.80), and the Autonomy Support (0.74), Involvement (0.73) and Structure (0.91) dimensions, but low reliability for Interpersonal Control (0.35). The advisors, who conducted PA promotion consultations that were rated as low in their interpersonally supportive features, were perceived by their clients as being less supportive (F(1,10) = 5.0, p <.05). Ratings on the ISPACOT differentiated advisors who were trained in SDT principles and those who were not. Overall, the findings provided preliminary evidence for the reliability and convergent validity of the ISPACOT. 相似文献
960.
This article aims to provide an overview of the current state of research on the relationship between loneliness and physical activity (PA). A systematic literature search was conducted to identify all empirical studies assessing this relationship. A total of 37 studies stemming from 36 publications met the inclusion criteria. Study analyses comprised an individual consideration of each study and a systematic summarization of the studies. The majority of eligible studies focused on adolescent or elderly populations. Direct negative associations between PA and loneliness were found in half of the 24 cross-sectional studies. Of the seven identified longitudinal studies, one found a direct negative influence of PA on loneliness. Four longitudinal studies found evidence for a reverse influence, namely of loneliness on PA. Five intervention studies found PA to reduce loneliness. Two of the cross-sectional studies and one of the intervention studies found social support and social competence to moderate or to mediate the relationship between PA and loneliness. The findings indicate that PA can contribute to a decrease in loneliness. However, studies also indicate that any beneficial effect is dependent upon the quality of relationships present during physical activity. Additionally, loneliness itself might reduce the probability of being physically active. 相似文献