中国足球超级联赛U23新政何以有效?——基于“足协-俱乐部”的博弈     

花楷  刘晓宇  胡凯  隆丽珊 《武汉体育学院学报》2020,54(8):72-80

中超联赛自2017赛季推出U23新政以来备受争议。在"上有政策下有对策"的非合作博弈下，U23新政如何才能实现政策初衷?该文首次采用不完全信息静态博弈模型分析了U23新政下足协与俱乐部的博弈均衡。研究表明：（1）足协推行新政的最优概率为俱乐部采取积极策略给足协带来的净收益与消极策略带来的净收益之比，实质上取决于俱乐部的遵从度。（2）在缺乏讨价还价权时，俱乐部对新政采取消极应对策略是为了减少净损失。俱乐部积极应对的最优概率为消极应对的净损失占其与积极应对的加成即期收益损失之和的比值，实为两害相权取其轻。为激励俱乐部采取积极策略，应降低俱乐部消极应对策略的净收益或积极应对策略的加成即期收益。（3）提高U23新政有效性的治标之策是减少U23政策对中下游球队的冲击，实行有差别的U23政策；对U23球员上场时间低于均值的俱乐部，实行等额或超额递减分成机制。治本之策是培育一个可预期、可持续、可盈利的足球市场，俱乐部能够内生出建立百年基业的长效机制；继续深化足协的去行政化改革，使之向完全社团法人转型。  相似文献   

Examining the predictive validity of behavior screeners across measures and respondents     

Corey Jones  Emily Graybill  Brian Barger  Andrew T. Roach 《Psychology in the schools》2020,57(6):923-936

Through this study we compared different informants and different behavior screening tools that are available to screen for behavioral and emotional risk. We examined screening results from 100 students from a high school with a high achiever's magnet program in the Southeastern United States (school demographics: 71% female and 79% black, non-Hispanic). This school conducted behavior screening using both teacher-report via the Student Risk Screening Scale, Internalizing/Externalizing (SRSS-IE) and student report via the Strengths and Difficulties Questionnaire (SDQ). Nonparametric correlation tests were conducted between the SRSS-IE and SDQ externalizing and internalizing scores. Generalized linear regression models were created based on the data (demographics, internalizing, and externalizing scores on both screening tools) to model the two count outcomes (office discipline referrals [ODRs] and absences). Diagnostic accuracy metrics were generated from the scores on both the SRSS-IE and SDQ with the outcome measures (ODRs and absences). Externalizing scores on both screening tools had statistically significant low correlations. The ODR model contained two predictors: externalizing score on the SRSS-IE and internalizing score on the SDQ, while the absence model contained grade and the externalizing score on the SDQ. The highest accuracy and agreement values were seen between students with elevated risks on both screening measures and ODRs. The results confirmed that teacher and student reporting, as well as different screening tools, will result in some different students being identified. The choice of informant and screening tools should be dependent on the needs and resources of the school.  相似文献   

Supporting the information gathering practices of academically advanced college-bound students     

Melanie S. Meyer  Jeff Cranmore 《Psychology in the schools》2020,57(7):1057-1076

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Adaptation and evaluation of a learning analytics dashboard to improve academic support at three Latin American universities     

Julio Guerra  Margarita Ortiz-Rojas  Miguel Angel Zúñiga-Prieto  Eliana Scheihing  Alberto Jiménez  Tom Broos  Tinne De Laet  Katrien Verbert 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(4):973-1001

Despite the success of academic advising dashboards in several higher educational institutions (HEI), these dashboards are still under-explored in Latin American HEI's. To close this gap, three different Latin American universities adapted an existing advising dashboard, originally deployed at the KU Leuven to their own context. In all three cases, the context was the main ruling factor to these adaptations. In this paper, we describe these adaptions using a framework that focuses on four different elements of the context: Objectives, Stakeholders, Key moment and Interactions. Evaluation of the adapted dashboards in the three different Latin American universities is conducted through pilots. This evaluation shows the value of the dashboard approach in different contexts in terms of satisfaction, usefulness and impact in academic decision-making and advising tasks. The main contribution of this paper is the systematic reporting of the adaptations to an academic advising dashboard and showing the value of an academic advising dashboard on academic decision-making and advising tasks.  相似文献   

灰色预测法在情报研究中的应用研究综述     

张晶晶  李泽霞 《图书情报工作》2021,64(24):106-114

[目的/意义] 灰色预测法可有效处理情报研究中广泛存在的小样本数据，通过对灰色预测法在情报研究中的应用情况进行梳理，总结其在应用过程中存在的不足，为灰色预测法在情报研究中的进一步应用提供参考。[方法/过程] 通过综述情报研究中涉及灰色预测法的相关文献，从数据选取、模型构建和解决的问题等方面对情报研究中灰色预测法的应用进行概述，总结当前情报研究中灰色预测法的应用所存在的问题，并提出改进建议。[结果/结论] 在方法应用上，已有研究主要采用数列灰预测，且模型集中在单变量灰色预测模型，根据预测对象不同，灰色预测法已经在包括期刊分析、图书馆运行管理、热点主题分析及科研机构评价方面得到了很好的应用，未来可根据预测对象特点及研究目标尝试不同的灰色预测方法，扩宽灰色预测法在其他方面的情报研究问题中的应用。  相似文献   

The impact of workplace information literacy on organizational innovation: An empirical study     

《International Journal of Information Management》2020

The present study investigates the relationship between CEO’s information literacy and innovation in small and medium-sized enterprises (SMEs). Even if information literacy’s business value has been recognized in recent literature, its impact on organizational innovation, a critical and strongly information intensive process, has never been studied before. Structural equation modeling based analysis of data collected from 184 company CEOs in Finland revealed that CEOs’ information literacy has a positive impact on the development of exploratory and exploitative innovations in SMEs. Additionally, opportunity recognition mediates the relationship between information literacy and innovation. Overall, the influence of information literacy is slightly stronger on exploitation than exploration. Nevertheless, the mutual positive effect suggests that information literacy enhances innovation ambidexterity in organizations. Based on these findings, we discuss theoretical and practical implications as well as future research opportunities in workplace information literacy research.  相似文献   

Protective behavior in ride-sharing through the lens of protection motivation theory and usage situation theory     

《International Journal of Information Management》2021

The frequent occurrence of security incidents in ride-sharing is a challenge for the survival of IT-enabled ride-sharing platforms. Passengers’ protective behavior is an effective means to alleviate this issue, with benefits to both the passengers and the platforms. This study explores the mechanisms of passengers’ protective behavior in the ride-sharing context by combining protection motivation theory (PMT) and usage situation theory. We test our hypotheses using data (n = 346) collected from a field survey based on a real scenario. The findings reveal that PMT and usage situation theory work well to explain passengers’ protective behavior during ride-sharing. This study explains the motivation behind passengers’ protective behavior in the ride-sharing context, extends the contents of PMT by exploring its antecedents, and extends the contents of usage situation theory by introducing a new dimension. Our findings can help ride-sharing platforms take appropriate strategies to improve passengers’ protective behavior.  相似文献   

公共健康视角下的电子竞技发展趋势研究     

闫金 《山东体育科技》2020,(1):11-15

电子竞技(E-sports)已经成为当代发展最快,且最重要的文化现象之一。国家体育总局于2003年将它列为第99个运动项目,又在2011年再次将电子竞技改为正式比赛项目。电子竞技从运动员、观众和经济价值而言,是一个不断发展的产业,而且它将被列入2024年巴黎奥运会。虽然最初主要是年轻男性对电子竞技感兴趣,但电子竞技有可能在更广泛的用户群体中带来健康行为的改变。本文运用文献资料法,对比分析法和逻辑分析法探讨电子竞技在整个生命周期内影响健康行为以及一些主要困境的解决措施。除此之外,电子竞技将有可能帮助于个人改变其体育活动和健康行为。最后考虑到电子竞技的指数增长,对于学者和政策制定者来说,认识到电子竞技带来的机遇是非常重要的。  相似文献   

面向区域创新与产业发展的信息服务实践研究——以中国科学院文献情报中心区域信息服务为例     

贾苹  闫亚飞  郭文姣  刘细文  张超  彭皓  杨雨寒  赵婉雨 《图书情报工作》2021,64(24):24-31

[目的/意义] 随着自主创新战略的提出，科技信息和科技情报在国家科技发展中的基础性作用日益受到重视，开展区域创新和经济发展的信息服务研究与实践，构建面向区域创新和经济发展的信息服务方法体系、实施方案，是十分必要的。[方法/过程] 通过对国内外文献情报机构服务区域创新和经济发展的实践调研，以及中国科学院文献情报中心在"十二五"和"十三五"期间面向省级科学院、中国科学院转化中心、地方政府、园区企业开展区域信息服务的整体设计和服务实践与案例分析，总结归纳中国科学院文献情报中心开展区域创新和经济发展知识服务的特色和成效。[结果/结论] 在实践的基础上提出图书馆面向区域创新和产业发展提供信息服务，进一步拓展了图书馆的服务领域，是图书馆发展的一个生长点，并将在服务内容与服务方式上不断发展完善。  相似文献   

The Mystery Room: discovering the flexibility of an information literacy-based educational escape room     

Glenn Koelling  Alyssa Russo 《Public Services Quarterly》2020,16(1):1-11

Abstract

The Mystery Room is an educational escape room based on information literacy and applied to multiple audiences, including first-year students and library student employees. In this article, we explain how we developed the game, its theoretical underpinnings, and why it’s a flexible workshop for a variety of audiences.  相似文献