网络环境下消费者信息查寻行为研究   总被引：3，自引：0，他引：3  

范敏  邓小昭 《现代情报》2011,31(12):37-40

随着网络和电子商务的出现和发展,消费者进入到了一个全新的交易环境中,消费者的信息查寻行为也随之发生了改变。文章主要从消费者信息查寻行为产生的原因出发,描述了消费者网络信息查寻行为的含义、特点、类型,最后讨论了影响消费者网络信息查寻行为的因素。  相似文献   

改进搜索引擎及其数据结构的设计     

郑志宏  徐卓君  文红  郑志高 《情报科学》2012,(2):200-205

针对传统搜索引擎在搜索过程中产生的临时文件多、占用磁盘空间大的问题,本文改进了搜索引擎的数据结构,采用索引压缩技术减少了临时文件,提高了检索效率。  相似文献   

企业平衡式创新搜寻及其阶段效应-间断性平衡还是同时性平衡？          下载免费PDF全文

芮正云  罗瑾琏 《科研管理》2018,39(1):9-17

开放式创新要求企业跨越组织边界搜寻外部知识。为了识别“前瞻-反应型”二元搜寻平衡与企业发展阶段的动态匹配规律,基于我国中小企业调查样本进行实证分析,结果发现：平衡式搜寻对创新绩效具有显著的正向影响,但是企业在初创期和成长期的二元搜寻平衡模式存在差异。在初创期,前瞻型与反应型两类搜寻策略间不存在互补效应,且二元均衡程度过高或差异过大,均不利于企业创新;而在成长期,前瞻型与反应型两类搜寻策略间存在互补效应,且同时性平衡程度越高,创新绩效越好。据此探讨了企业在不同阶段的最佳平衡模式,即初创期的企业选择“间断性平衡”较为合适,进入成长期后,企业需要将平衡模式转换为“同时性平衡”。  相似文献   

试论搜索引擎的技术改进   总被引：4，自引：0，他引：4  

赵丹群  喀碧竹 《情报理论与实践》2003,26(2):185-186,181

作为当前网络信息资源的重要检索工具 ,搜索引擎问世以来已得到广泛使用。作为一个新生事物 ,搜索引擎技术得到了快速发展 ,但同时也在广大网络用户的频繁使用中 ,逐渐暴露出其存在的各种各样的问题。本文主要从 3个不同方面探讨对搜索引擎进行技术改进的方法与思路。1　搜索引擎工作模式的改变众所周知 ,Ｗｅｂ最初是作为欧洲粒子物理研究中心(ＣＥＲＮ)内部的协作环境而诞生的 ,其分布式协作特性已成为全球信息共享的基础。但值得注意的是 ,基于Ｗｅｂ的一些信息应用系统采用的却是传统的集中式处理模式 ,以致这种集中式处理与Ｗｅｂ的分…  相似文献   

劳动力市场分割与大学毕业生失业   总被引：102，自引：5，他引：102  

赖德胜 《北京师范大学学报(社会科学版)》2001,(4):69-76

具有大学以上学历者占我国全部劳动者的比例非常低 ,但最近几年大学毕业生找工作却有越来越难的趋势。这种看似矛盾的现象是转型过程中劳动力市场分割这一制度背景下 ,大学毕业生与用人单位相互搜寻的结果。过大的城乡收入差距和过高的工作转换成本 ,使大学毕业生“宁要城里一张床 ,不要农村一幢房”,但城里的用人单位却因过高的解聘成本和户口成本而不能吸收更多的大学毕业生。因此 ,大学毕业生就业难的缓解和解决 ,要依赖经济发展 ,也离不开体制改革  相似文献   

The impact of physiological load on anticipation skills in badminton: From testing to training     

D. B. Alder  D. P. Broadbent  J. Stead  J. Poolton 《Journal of sports sciences》2019,37(16):1816-1823

Research remains unclear on the impact of physiological load on perceptual-cognitive skills in sport. Moreover, no study has examined the training of perceptual-cognitive skills under physiological load. The current study comprised two phases. Firstly, we examined the impact of badminton-specific physiological load on anticipatory skills in expert badminton players (n = 13), including key underlying mechanisms, such as gaze behaviour. Under high physiological load, participants displayed less efficient visual search behaviour and showed a reduction in response accuracy. Secondly, we examined the effects of combining perceptual-cognitive simulation training with the high physiological load. Ten of the expert badminton players were assigned to a combined training group, where the simulation training and the physiological load intervention occurred simultaneously or an independent training group, whereby the two components were completed independently. The combined training group showed a positive change in the efficiency of their visual search behaviours compared to the independent training group, but no significant performance improvements were found. Overall, findings demonstrate that high physiological load is detrimental to experts’ anticipatory skills. However, combining perceptual-cognitive simulation training with high physiological load can potentially negate these debilitating effects.  相似文献   

A comparison of visual search strategies of elite and non-elite tennis players through cluster analysis     

Nicholas P. Murray 《Journal of sports sciences》2017,35(3):241-246

Considerable research has documented that successful performance in interceptive tasks (such as return of serve in tennis) is based on the performers’ capability to capture appropriate anticipatory information prior to the flight path of the approaching object. Athletes of higher skill tend to fixate on different locations in the playing environment prior to initiation of a skill than their lesser skilled counterparts. The purpose of this study was to examine visual search behaviour strategies of elite (world ranked) tennis players and non-ranked competitive tennis players (n = 43) utilising cluster analysis. The results of hierarchical (Ward’s method) and nonhierarchical (k means) cluster analyses revealed three different clusters. The clustering method distinguished visual behaviour of high, middle-and low-ranked players. Specifically, high-ranked players demonstrated longer mean fixation duration and lower variation of visual search than middle-and low-ranked players. In conclusion, the results demonstrated that cluster analysis is a useful tool for detecting and analysing the areas of interest for use in experimental analysis of expertise and to distinguish visual search variables among participants’.  相似文献   

An Analysis of Undergraduate Students' Search Behaviors in an Information Literacy Class     

《Journal of Web Librarianship》2013,7(4):333-347

The purpose of this project was to investigate how students' search strategies changed over the course of a semester-long information literacy class. Data collection included four different paper questionnaires corresponding to course content in the spring 2008 semester. Seventy-seven participants completed the questionnaires and course work in the class. Results showed that participants' demographics did not have any impact on their selection of search keywords. While participants reported better search experiences with more search keywords, they were not able to develop more sophisticated search keywords after receiving more instruction and search experience. The participants who did develop more sophisticated search keywords had better search experiences and a higher rate of satisfaction with their research results. Future studies should examine what enabled these participants to develop more sophisticated search keywords.  相似文献   

查新期望差距及其控制   总被引：3，自引：0，他引：3  

刘燕萍  陈如好 《图书馆论坛》2005,25(4):225-226

查新期望差距是客观存在的，主要是信息供需双方的认识不同、制度准则缺陷及查新人员业务水平不足等原因造成的。要弥合查新期望差距，需要查新管理机构、查新理论与实务者和社会媒体等的共同努力。  相似文献   

基于网络的集成化信息检索   总被引：12，自引：0，他引：12       下载免费PDF全文

黄如花  陈朋 《中国图书馆学报》2005,31(1)

集成化信息检索是以信息集成与服务集成为显著特征,以达到知识共享的最大化为目的,实现对由互联网连接起来的数字资源库群的分布式管理及跨平台、跨语种的网络化存取。参考文献7。  相似文献