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》2020,64(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   

Assessing the effects of consumers’ product evaluations and trust on repurchase intention in e-commerce environments     

《International Journal of Information Management》2018

This study enhances the existing literature on online trust by integrating the consumers’ product evaluations model and technology adoption model in e-commerce environments. In this study, we investigate how perceived value influences the perceptions of online trust among online buyers and their willingness to repurchase from the same website. This study proposes a research model that compares the relative importance of perceived value and online trust to perceived usefulness in influencing consumers’ repurchase intention. The proposed model is tested using data collected from online consumers of e-commerce. The findings show that although trust and e-commerce adoption components are critical in influencing repurchase intention, product evaluation factors are also important in determining repurchase intention. Perceived quality is influenced by the perceptions of competitive price and website reputation, which in turn influences perceived value; and perceived value, website reputation, and perceived risk influence online trust, which in turn influence repurchase intention. The findings also indicate that the effect of perceived usefulness on repurchase intention is not significant whereas perceived value and online trust are the major determinants of repurchase intention. Major theoretical contributions and practical implications are discussed.  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   

Social influence on endorsement in social Q&A community: Moderating effects of temporal and spatial factors     

《International Journal of Information Management》2021

This study examines the impacts of social influence, which are manifested by popularity and source credibility, on social endorsement in social Q&A community; and how the relationship is impacted by temporal-spatial factors. By collecting panel data from a large platform, the results of an econometric model demonstrate that popularity and source credibility are positively associated with social endorsement. With respect to the moderation effects, the results further show that time distance strengthens the effect of popularity on the social endorsement, but undermines the effect of source credibility; while crowdedness plays the role that strengthens the impact of popularity on the social endorsement, it has no significant moderating effect on the relationship between source credibility and social endorsement. Both theoretical and practical implications are discussed.  相似文献   

When digitalized customers meet digitalized services: A digitalized social cognitive perspective of omnichannel service usage     

《International Journal of Information Management》2020

With the prevalence of digital technologies, various services have grown digitalized. Specific to the marketing section, multichannel has been gradually replaced by omnichannel, which aims to integrate all the physical and digital channels tightly. Although omnichannel has received considerable attention, there is still a dearth of research that theorizes the multi-faceted impacts of digitalization on omnichannel. This study thus extends social cognitive theory (SCT) to the digitalized context and contextualizes the digitalized customer and digitalized environment as mobile identity and channel integration quality, respectively. Moreover, based on the self-regulation process of human agency, we incorporate omnichannel self-efficacy, satisfaction, and habit as the agentic factors to interpret a customer’s conscious (ability and expectancy beliefs) and unconscious (automatic behavioral tendency) decision-making under the omnichannel setting. Through an online survey of 401 omnichannel customers, we find support for all the proposed hypotheses. Implications and limitations of this study are further discussed.  相似文献   

新媒体环境下的信息治理问题研究     

周春雷  王涵墨 《现代情报》2016,36(9):61

[目的/意义]近年来,在新媒体逐渐发展成熟的情况下,微博、微信、QQ、问答社区等泛网络产品成为网络用户进行信息交流的主要方式,这些新媒体平台在方便用户的同时,也存在明显的信息生态问题,本文尝试针对这些问题提出治理对策。[方法/过程]本文分析了新媒体环境的特征,提出了新媒体环境下的信息传播和信息治理模型,针对信息治理问题展开一系列探讨。[结果/结论]本文提出的新媒体环境下的信息传播模型和信息治理建议可为解决新媒体环境下的信息生态问题提供一些思路。  相似文献   

基于Bookmetrix的G20国家图书影响力比较研究     

杨思洛  邢欣  郑梦雪 《现代情报》2019,39(7):143-152

[目的/意义]对比分析G20国家图书影响力的现状，为我国提升图书国际影响力提供借鉴。[方法/过程]选择Springer收录的5个学科（化学、工程、医学、法律、历史）图书为样本，以Bookmetrix为数据源，在讨论指标覆盖率与相关性的基础上，从图书的产出数量、5类指标（下载量、引用量、提及量、读者量及评论量）以及合著关系3个方面展开比较分析。[结果/结论]研究发现：1）在指标覆盖率和相关性方面，整体情况与中、美、德等国家层面的表现类似。体现为图书的下载量覆盖率最高，读者量和引用量相关性值较高且稳定。2）中国的国际图书产出量与德国、美国、英国存在较大差距，但在指标均值、综合排名方面表现良好。3）在G20国家图书合著网络中，人文社科类图书国际合作强度明显低于理工类学科；美国、德国具有较高的科研合作实力与影响力；中国的国际合作具有一定基础，但整体影响力作用并不突出。  相似文献   

高校图书馆阅读推广活动的绩效评估实证研究——基于吉首大学图书馆调查分析     

刘喜球  王尧 《现代情报》2016,36(7):96-100

针对高校图书馆重阅读推广,轻绩效评估的现象,构建了一套阅读推广活动绩效评估体系。本文以吉首大学图书馆为例,从活动组织、参与者评估、校园影响3个方面对活动全程进行绩效评估,并对评估结果进行分析,提出相应对策。  相似文献   

Convergent designs in fine fashion: An evolutionary model for stylistic innovation     

Rossella Cappetta Author Vitae  Paola Cillo Author Vitae  Anna Ponti Author Vitae 《Research Policy》2006,35(9):1273-1290

In this paper we propose and test an evolutionary model of stylistic innovation, that is the change in the aesthetic and symbolic elements of products and services. Style is an increasingly relevant phenomenon in many industries and our goal is to develop a model of how styles get introduced and adopted. We build on existent literature on technological change to frame the dynamics of how style changes across time. In the model we propose, companies face periods of ferment with relevant stylistic variations and periods of convergence on a single trend—that is the stylistic convergent design versus the technologic dominant design. We identify the drivers of convergence in stylistic innovation. We test the model with a longitudinal empirical study (1984-2002) in the fine fashion industry, explaining the main differences between a stylistic and a technological evolutionary model.  相似文献   

我国化学领域青年科技人才论文产出分析——以前5批青年千人为例     

王甲旬  邱均平 《现代情报》2019,39(2):8-16

[目的/意义]目前，高层次人才引进已经成为我国提升科研实力的重要举措，考察人才引进后的论文产出情况，有助于掌握人才计划的实施效果。[方法/过程]文章通过Web of Science数据库下载题录信息，借助Bibexcel、CiteSpace和VOSViewer软件对前5批化学领域青年千人引进后发表论文的数量、结构、影响力、合作网络和基金支持情况进行分析。[结果/结论]研究发现，青年千人发表论文总数呈逐年上升趋势，论文平均被引高于化学领域国内和国际平均水平；存在若干已经形成规模的作者合作网络和机构合作网络，机构合作以国内机构合作为主；通过软件分析，青年千人研究的内容可以分为5个主要类别，分别是化学生物学、有机合成化学、新化学能源研究、高分子化学与物理、无机纳米材料；论文获得基金资助的水平高于全国论文项目资助的平均水平。研究提出通过建立合作网络、扩大合作网络规模，增加高影响力期刊发文数量，加强国际合作发表论文等建议提高中国化学研究的国际竞争力。  相似文献