美国图书馆超联盟的形成机制--非零和合作博弈   总被引：7，自引：1，他引：7  

蒋丽艳  蒋丽红 《新世纪图书馆》2004,(3):73-75

文章论述了美国图书馆超联盟的形成机制及其潜在的驱动力量。  相似文献   

Employ Game Teaching Method in the Primary School English Classroom     

LV Chun-jia 《海外英语》2015,(3)

on the basis of linguistics, psychology and other related theory, we should carry out game teaching method to make students learn easily and happily because of the lack of interest and other problems i...  相似文献   

基于系统动态学方法的弱信号生命周期建模与仿真     

董尹  刘千里  宋继伟 《图书情报工作》2019,63(13):75-84

[目的/意义]为增强弱信号的内涵研究，对其全生命周期过程下的各阶段要素以及要素间的联系进行探寻，以期获得一定程度上的理论贡献，同时也为相关组织在开展弱信号管理实践时提供理论指导。[方法/过程]在对弱信号概念研究现状进行梳理的基础上，结合意义构建理论给出了弱信号概念界定。随后，通过与信息生命周期、新兴议题生命周期进行类比，提出弱信号生命周期理念。进而采用系统动态学方法开展系统思考，使用因果回路图进行系统建模，运用存量流量图进行仿真模拟。[结果/结论]弱信号生命周期包含4个阶段：侦测、关联、传递、抉择，相应的系统动态学模型所具备的现实性得到验证，且通过情景模拟确认了4个关键辅助变量：外界噪声干扰程度、弱信号分析效率、组织内相互信任程度、决策者信任程度。在整体研究的基础上，给出弱信号管理过程中可能会遇到的障碍以及应对策略。  相似文献   

面向新生的“微视频+代入式体验”信息素养教育研究     

洪跃 《图书情报工作》2019,63(20):88-95

[目的/意义]基于建构主义学习理论，借鉴翻转课堂先进理念，以提高个人信息素养能力的初学者为主要教育研究对象，调研分析其个性特征、信息行为和教育方式偏好。[方法/过程]通过调研分析，总结教育方式与学生需求之间的矛盾成因，提出面向新生的"微视频+代入式体验"信息素养教育创新模式，着重分析模式特点、构建策略和实施方案，并提出可行性组织策略。[结果/结论]"微视频+代入式体验"信息素养教育新模式，综合运用微视频所特有的视觉冲击力，克服教师语言抽象化的不足，同时通过代入式情境体验，完成知识吸收内化、高层次思维认知，有效提升学生的信息素养综合能力。  相似文献   

古德哈特定律的博弈分析     

林海 《保定师专学报》2003,16(2):76-78

从博弈论的角度分析论证古德哈特定律的正确性,指出所谓稳定关系的失效不过是从一种均衡走向另一种均衡.这就给根据经济行为选择政策时提出了一个新的要求要考虑经济行为中不同主体的博弈行为,才会制定出行之有效的政策.  相似文献   

大学生助学贷款的博弈分析   总被引：2，自引：0，他引：2  

李晓宁 《山西财经大学学报(高等教育版)》2007,10(1):68-71

助学贷款本是一项利国利民的政策,但这项政策却遭受了空前的信用危机。文章通过对学生和银行的行为进行博弈分析,认为纯粹靠道德等内在诚信来约束学生的还贷是无用的,必须建立起一套完整的外在诚信约束机制。文章还设计了助学贷款的“三维”被迫诚信机制,以明确助学贷款中政府、银行、贫困生家庭和借款学生的权责和义务。  相似文献   

幼儿园游戏活动形式特征及结构探析     

杨静 《集美大学学报(教育科学版》2006,7(3):88-91

幼儿园游戏活动形式各异,既相对独立又相互联系,体现出自由游戏自由度高、区域游戏选择性大、主题游戏综合性强;活动结构具有由低到高发展、活动层次具有逐级递进、活动内容具有交叉互补的鲜明特征;在此基础上,有目的、有意识地整合各种游戏活动,形成游戏形式自然地贯穿于幼儿一日活动的基本结构,实现游戏促进幼儿发展的整体功效。  相似文献   

SAR雷达信号处理技术研究     

王晓虹 《商丘职业技术学院学报》2007,6(5):65-67

阐述了SAR雷达主要特点、应用及其信号处理技术的发展状况，研究了SAR雷达信号处理的几个主要技术——宽带信号产生器、高采样率模数变换、脉冲压缩技术、运动补偿技术、SAR成像算法、实时成像处理器、慢速动目标检测和成像技术．对SAR雷达的进一步发展具有深远的意义．  相似文献   

Tier-specific evolution of match performance characteristics in the English Premier League: it’s getting tougher at the top     

Paul S. Bradley  David T. Archer  Bob Hogg  Gabor Schuth  Michael Bush  Chris Carling 《Journal of sports sciences》2016,34(10):980-987

This study investigated the evolution of physical and technical performances in the English Premier League (EPL), with special reference to league ranking. Match performance observations (n = 14,700) were collected using a multiple-camera computerised tracking system across seven consecutive EPL seasons (2006–07 to 2012–13). Final league rankings were classified into Tiers: (A) 1st–4th ranking (n = 2519), (B) 5th–8th ranking (n = 2965), (C) 9th–14th ranking (n = 4448) and (D) 15th–20th ranking (n = 4768). Teams in Tier B demonstrated moderate increases in high-intensity running distance while in ball possession from the 2006–07 to 2012–13 season (P < 0.001; effect size [ES]: 0.68), with Tiers A, C and D producing less pronounced increases across the same period (P < 0.005; ES: 0.26, 0.41 and 0.33, respectively). Large increases in sprint distance were observed from the 2006–07 to 2012–13 season for Tier B (P < 0.001; ES: 1.21), while only moderate increases were evident for Tiers A, C and D (P < 0.001; ES: 0.75, 0.97 and 0.84, respectively). Tier B demonstrated large increases in the number of passes performed and received in 2012–13 compared to 2006–07 (P < 0.001; ES: 1.32–1.53) with small-to-moderate increases in Tier A (P < 0.001; ES: 0.30–0.38), Tier C (P < 0.001; ES: 0.46–0.54) and Tier D (P < 0.001; ES: 0.69–0.87). The demarcation line between 4th (bottom of Tier A) and 5th ranking (top of Tier B) in the 2006–07 season was 8 points, but this decreased to just a single point in the 2012–13 season. The data demonstrate that physical and technical performances have evolved more in Tier B than any other Tier in the EPL and could indicate a narrowing of the performance gap between the top two Tiers.  相似文献   

Development and validation of the Perceived Game-Specific Soccer Competence Scale     

Hannele Forsman  Arto Gråstén  Minna Blomqvist  Keith Davids  Jarmo Liukkonen  Niilo Konttinen 《Journal of sports sciences》2016,34(14):1319-1327

ABSTRACT

The objective of this study was to create a valid, self-reported, game-specific soccer competence scale. A structural model of perceived competence, performance measures and motivation was tested as the basis for the scale. A total of 1321 soccer players (261 females, 1060 males) ranging from 12 to 15 years (13.4 ± 1.0 years) participated in the study. They completed the Perceived Game-Specific Soccer Competence Scale (PGSSCS), self-assessments of tactical skills and motivation, as well as technical and speed and agility tests. Results of factor analyses, tests of internal consistency and correlations between PGSSCS subscales, performance measures and motivation supported the reliability and validity of the PGSSCS. The scale can be considered a suitable instrument to assess perceived game-specific competence among young soccer players.  相似文献