浅谈4G环境下的图书馆服务     

谷春梅 《江西图书馆学刊》2014,44(6):99-101

在介绍4G技术概念及其特点的基础上,探讨了4G技术有利于图书馆员的监控管理,有利于参考咨询服务质量的提高,有利于促进移动图书馆的发展。  相似文献   

刘翔110米栏第5栏攻栏蹬伸阶段技术特征的剖析   总被引：3，自引：0，他引：3  

李保安 《山东体育科技》2005,27(3):42-44

采用文献资料、高速摄录解析和比较分析等方法,对刘翔110m栏两次比赛第5栏攻栏蹬伸技术进行了分析,并与同场竞技110m栏选手若干技术参数相比较.结果显示：刘翔110m栏第5栏起跨攻栏意识强,着地角大,支撑时间短,起跨角小,攻栏速度快,身体重心腾起角小.符合该项目运动学特征及当今世界跨栏技术发展趋势.  相似文献   

中枢性运动疲劳相关神经递质5-HT的研究进展   总被引：7，自引：0，他引：7  

姚鸿恩  刘坤  荣湘江 《北京体育大学学报》2006,29(7):941-943

在初步阐明了5-HT导致中枢疲劳的机制之后,目前的中枢性运动疲劳的研究趋势主要是明确5-HT及5-HT受体在不同脑区的作用,5-HT受体拮抗剂与促进剂的作用.在此基础上更开展了很多通过营养或运动干预手段延缓与消除中枢疲劳的研究.随着神经生理学研究方法的改进,目前已经可以使用脑内微透析技术等方法进行活体动物神经递质的采样,达到动态检测运动中脑内神经递质变化的目的.国内使用新技术新方法研究中枢性运动疲劳还有待于进一步发展.  相似文献   

Comparative studies of authoritarian-personality characteristics across culture, language and methods     

Robert G. Neel  Oliver C. S. Tzeng 《Int J Intercult Relat》1983,7(4):393-400

This research was to determine whether the large differences in scores on the F scale found in previous studies (Bradburn, 1963; Kagitcibasi, 1970; Kinnis, 1977) were due to cultural differences in personality characteristics or due to differences in language and/or structure of measuring instruments.The subjects were three groups of university students from the United States and Turkey. The Turkish/English (T/E) sample attended a Turkish University where all classes were in English. The Turkish/Turkish (T/T) sample attended a Turkish University where all classes were in Turkish. The American/English (A/E) sample attended a Midwestern University.Each of the samples were administered three Scales measuring authoritarian personality characteristics. They were: Rokeach's (1960) Dogmatism scale (D scale) the standard F scale (Adorno et al., 1950) and a multiple choice format of the F scale called A scale (Neel, 1977). For the T/E and A/E subjects these scales were in English and for the T/T subjects in Turkish.For each cultural group the composite scores on each scale were obtained and used for inter-group comparisons through one-way analysis of variance (ANOVA). Within-group correlations across the three measures, the means and standard deviations of individual items and T tests were also computed. Interculture and language comparisons resulted in two significant differences on both the Dogmatism and F scales. Analysis of group, composite scales shows that these differences are due to disparities between the A/E and T/T culture/language groups. Differences across language and culture groups for the A scale were not significant. The A measure behaves differently from D and F for the two Turkish culture groups. For the A/E group, D, F, and A measures are almost undifferentiable. The results suggest the effect of measurement instruments on inter-cultural differences in inter-measure comparisons. This indicates a response format effect (agreer bias or acquiescence set).  相似文献   

Cognitive development and instructional theory     

Charles J. Brainerd 《Contemporary educational psychology》1978,3(1):37-50

The foundations of the cognitive-developmental curriculum movement are briefly examined in this paper. The key features of this movement are the recommendations it makes in three areas: curriculum sequencing, curriculum content, and teaching strategies. Each of these areas is critically examined. It is concluded that the grounds for all proposals are purely theoretical. When the data are considered, they either contradict specific proposals or provide no direct evidence.  相似文献   

互构、共变与融合:5G时代“移动互联+全民健身”的演进脉络及发展前瞻     

吴宾  姚蕾  仇军  陈晴 《武汉体育学院学报》2021,55(4):28-37

媒介技术与健身需求交互建构是5G时代"移动互联+全民健身"的生成机制,供需主体同向共变是其发展状态,多元要素系统融合是其演进趋势,并最终在实践中生成"数字化健身共同体"形态。直面5G时代"移动互联+全民健身"机遇与挑战,探索突围路径：完善体育科技伦理体系,以"人民性"作为衡量技术发展的标准;制定针对性政策法规,协调政策激励与过程监管;做好顶层设计,引导数字健身平台与体育实体产业协同发展;优化资源配置,引进社会力量与新型人才共建全民健身事业;持续推进科技创新,助力健康中国与体育强国建设。  相似文献   

意见挖掘中特征权重的计算方法研究     

陈卓群  王忠义 《情报科学》2012,(5):759-763

基于特征的意见挖掘中,特征权重计算是一个难点。在对各种权重计算方法深入研究的基础上,提出一种新的权重计算方法以解决该问题。该方法集成了层次分析法和G1法的基本思想,可以有效提高权重计算的准确性。一方面,该方法使用G1法对层次分析法中单层次指标权重计算进行改进,以克服层次分析法中判断矩阵的不一致性带来的问题;另一方面,在单层次指标的层次总权重计算中,提出一个总权重计算通用公式,扩展了层次分析法中层次总权重计算公式,使其更适合一般的应用。  相似文献   

基于3G技术的图书馆信息服务的研究     

陈晓杰 《大众科技》2012,(7):33-34,32

随着通信、无线互联网技术的突飞猛进,移动终端用户数量的急剧增长,以及数字图书馆建设的加快,为图书馆开展移动信息服务创造了前提条件.3G 是近年来兴起的前沿无线通信技术,其在图书馆建设和管理方面的使用,将为图书馆移动信息服务形式和内容带来新的变化.文章分析了图书馆信息服务的现状,探讨了基于3G 网络的图书馆信息服务模式及实现策略.  相似文献   

基于Mobile IPv6的3G-WLAN网络切换策略研究     

李剑 《大众科技》2012,(6):73-75

3G移动通信系统可以满足用户随时随地更快速的传输多媒体应用与实时性服务的需求,而IEEE的802.11无线网络则可以为用户提供涵盖范围较小、高速的数据传输环境。因此将两种传输技术结合为用户提供快速无缝接入的通信能力,并能在这两种传输技术间快速的切换,有着重大的现实意义。考虑到无线传输的环境中,用户对移动性的需求较高,因此本文以3GPP制定的3G与WLAN整合架构为基础,提出一种基于移动IPv6的异构网络快速切换策略,以减少用户在移动过程中所造成的服务中断和数据包丢失问题。  相似文献   

FAUNC系统G10指令和宏指令的应用     

罗永华  罗永洪 《科技广场》2012,(4):82-84

本文阐述了在数控铣床或加工中心上,通过实例介绍了数控铣削加工编程中运用G10指令和宏程序来解决加工中的一些思路和方法。  相似文献