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排序方式: 共有539条查询结果,搜索用时 15 毫秒
71.
我国出口产品生态效率偏低,容易招致国外生态反倾销指控。建立以企业为主体,行业协会为支撑,政府为主导,信息服务机构为中介,多元一体,协同联动的竞争情报体系,收集国内外相关情报信息,并进行加工、整理、分析与研究,是有效应对反倾销的重要手段。本文构建了应对生态反倾销的竞争情报体系建设指标,并应用带置信度的灰色聚类评估模型对其进行科学合理地评价,有利于改善企业竞争情报体系的建设现状,提高中国出口企业应对生态反倾销的能力。  相似文献   
72.
Many students find understanding confidence intervals difficult, especially because of the amalgamation of concepts such as confidence levels, standard error, point estimates and sample sizes. An R Shiny application was created to assist the learning process of confidence intervals using graphics and data from the US National Basketball Association.  相似文献   
73.
Coaching efficacy (CE) represents the extent to which coaches believe they have the capacity to affect the learning and performance of their athletes, and the CE model details antecedents, dimensions and outcomes of CE. Based around the CE model, the present paper had two main aims. First, to present a comprehensive and critical review of the research underpinned by the CE model. Studies were categorised by whether they investigated antecedents, outcomes or athletes’ perceptions of their coach. Twenty-one published studies were identified for the review. Overall the review provides support for the main tenets of the CE model, with researchers establishing links between CE and many of the antecedents and outcomes proposed in the model. The second aim was to assimilate findings from the review, limitations in the CE model and relevant conceptual models to present a revised CE model. Whilst retaining the essence of the original model, the revised model also incorporates explicit processes linking coach beliefs and athlete perceptions, antecedents of athlete perceptions and an intrarelationship source of CE. It also incorporates specific categories of coach behaviour and athlete-/team-level outcomes. The paper concludes by identifying limitations in the literature and review, and by proposing key directions for future research.  相似文献   
74.
学习信心是儿童对完成学习任务的能力信任和学习结果的积极预期。学习信心可以分为泛化信心(普遍信心)和殊化信心两类。殊化信心的建构依赖于儿童在实际学习过程中成功和胜任的经验。泛化信心建构的心理依据是在殊化信心基础上形成的对活动任务的规律性认知和自身能力的一般把握。信心的形成过程是个体内部心理的自主建构。  相似文献   
75.
ABSTRACT

Although the talent development environment and mental toughness are critical for athletes to realise their athletic potential, there is a dearth of literature on whether the talent development environment can enhance mental toughness among those athletes who are identified with athletic potential (i.e., talented athletes). Drawing on self-determination theory (Deci & Ryan, 2000), this research examined the relationships between the talent development environment, basic psychological needs satisfaction and mental toughness. Talented athletes (n = 261) completed a survey measuring key features of the talent development environment, needs satisfaction and mental toughness. The results of structural equation modelling indicated that three environmental factors (i.e., long-term development focus, holistic quality preparation and communication) were positive predictors of needs satisfaction, which then positively predicted mental toughness. The talent development environment may be considered for promoting talented athletes’ mental toughness.  相似文献   
76.
ABSTRACT

The ACL-Return to Sport after Injury (ACL-RSI) and Injury-Psychological Readiness to Return to Sport (I-PRRS) scales were developed to assess psychological factors associated with return to sports. Validity and reliability have been determined. The aim of this study was to investigate the responsiveness of the Dutch ACL-RSI and I-PRRS. Seventy patients with ACL reconstruction completed both scales twice 2 months apart, plus a Global Rating of Change (GRC) questionnaire. Distribution and logistic regression-based methods were used to study responsiveness. The Standardized Response Mean (SRM) for the ACL-RSI was 0.3 and for the I-PRRS 0.1, indicating low responsiveness. The minimally important change (MIC) for ACL-RSI was 2.6 and for the I-PRRS 0.9. Since the standard error of measurement (SEM) and smallest detectable change (SDC) were larger than MIC in individual patients, it does not seem possible to distinguish minimally important changes from measurement error in individual patients with either scale. At the group level responsiveness seemed sufficient; hence, both scales can be used to investigate the effectiveness of an intervention at the group level. Both scales can also be used in cross-sectional research and in clinical practice as screening instruments to identify patients at risk of not returning to sports.  相似文献   
77.
78.
文章通过对温州高校77名大学生运动员的调查和对相关文献资料的分析,从不同角度探析温州高校大学生运动员的特质运动自信心。调查结果表明:不同年级、不同训练年限、不同等级的运动员在特质运动任务和特质运动应对信心方面均存在显著性的差异,集体和个人项目也存在着差异。测量数据可为大学生运动员特质运动自信心的培养和科学的心理技能训练提供参考,可为提高大学生运动员的竞技水平服务。  相似文献   
79.
在国际形势纷繁复杂、媒体融合不断深化的今天,社科期刊坚定文化自信,事关国运兴衰、文化安全和民族精神独立性。新时代社科期刊需兼备“引领力”“鉴别力”“融合力”,方能适应新的国际形势和媒体环境,创造出不负时代、不负历史、不负人民的精品力作,为我们的文化自信提供实践经验与学术能量,从而为建设社会主义文化强国做出应有的贡献。  相似文献   
80.
讨论了数据挖掘技术在高校信息管理系统中应用的必要性和重要性,找到两者的结合点,探索如何在高校信息管理系统中应用数据挖掘技术。  相似文献   
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