Four pitfalls in normalizing citation indicators: An investigation of ESI’s selection of highly cited papers

InCites Essential Science Indicators is becoming increasingly used to identify top-performing research and evaluate the impact of institutes. Unfortunately, our study shows that ESI indicators, as well as other normalized citation indicators, have the following flaws. First, the publication month and the online-to-print delay affect a paper’s probability of becoming a Highly Cited Paper (HCP). Papers published in the earlier months of the year are more likely to accumulate enough citation counts to rank at the top 1% compared with those published in later months of the year. Papers with longer online-to-print delays have an apparent advantage for being selected as HCPs. Research field normalizations lead to the third pitfall. Different research fields have different citation thresholds for HCPs, making research field classification important for a journal. In addition, the uniform thresholds for both articles and reviews in ESI affect the reliability of HCP selection because, on average, reviews tend to have higher citation rates than articles. ESI’s selection of HCPs provides an intuitive feel for the problems of normalized citation impact indicators, such as those provided in InCites and SciVal.     

High-entropy-alloy nanoparticles with 21 ultra-mixed elements for efficient photothermal conversionOA

Multi-metallic nanoparticles have been proven to be an efficient photothermal conversion material, for which the optical absorption can be broadened through the interband transitions(IBTs), but it remains a challenge due to the strong immiscibility among the repelling combinations. Here, assisted by an extremely high evaporation temperature, ultra-fast cooling and vapor-pressure strategy, the arc-discharged plasma method was employed to synthesize ultra-mixed multi-metallic nanoparticles compose...     

用户感知视角下的商务网站信息生态化程度测评研究——以淘宝网和京东商城为例

[目的/意义]构建商务网站信息生态化程度测评指标体系,对淘宝网与京东商城的信息生态化程度进行实证测评。[方法/过程]基于用户感知理论,根据网络信息生态化程度测评指标设计调查问卷,对淘宝网和京东商城用户进行问卷调查。运用SPSS 19.0对调查问卷进行统计分析,通过信度分析、效度分析、回归分析验证问卷的可信度、有效性和各级指标对总目标的影响程度,得出被测对象在各级指标上的测评值。[结果/结论]用户对商务网站信息生态化程度满意度较低;从总体上看,京东商城的信息生态化程度高于淘宝网;我国电子商务网站的信息生态化建设应得到重视,网站信息质量和可持续发展潜力的提升是其信息生态化建设的重点。     

“健康中国2030”战略下健康数据协同治理体系研究

[目的/意义] 提升公民健康水平是经济社会发展到一定程度后的必然要求，健康数据协同治理体系的构建有助于从信息科学角度达成这一要求，治理体系需要以国家战略为宏观指导，全方位服务于公民健康水平提升的总体目标。[方法/过程] 通过对《"健康中国2030"规划纲要》文本精神的领会，在分析了各治理主体对健康信息治理需求的基础上，提出一种面向"健康中国2030"战略的健康数据协同治理体系，并针对关键环节提出保障措施。[结果/结论] 协调各层级、各部门与各利益主体的健康数据治理体系构建与保障，有助于在推动国家健康战略目标的同时实现健康数据的社会价值，拓展健康信息学的研究范畴。     

江苏省科技进步监测指标体系与评价方法的修订

本文分析了江苏省科技进步统计监测体系修订工作的背景和原则,从指标体系框架、指标选用、衡量标准、计算方法和权重确定等五个方面阐述工作思路和修订内容。之后,本文对指标体系修订后的监测结果进行了比较性地描述统计分析。最后,本文讨论了几个对于读者更好地理解本次指标体系修订至关重要的问题。     

Comparison and Classification of Documents Based on Layout Similarity

This paper describes features and methods for document image comparison and classification at the spatial layout level. The methods are useful for visual similarity based document retrieval as well as fast algorithms for initial document type classification without OCR. A novel feature set called interval encoding is introduced to capture elements of spatial layout. This feature set encodes region layout information in fixed-length vectors by capturing structural characteristics of the image. These fixed-length vectors are then compared to each other through a Manhattan distance computation for fast page layout comparison. The paper describes experiments and results to rank-order a set of document pages in terms of their layout similarity to a test document. We also demonstrate the usefulness of the features derived from interval coding in a hidden Markov model based page layout classification system that is trainable and extendible. The methods described in the paper can be used in various document retrieval tasks including visual similarity based retrieval, categorization and information extraction.     

基于结构洞理论的个人人际网络分析系统研究

企业行动者个人人际网络中的结构洞可以为行动者带来信息与控制优势,从而有利于组织创新以赢得竞争。本文正是以结构洞理论为基础,研究了一个计算机辅助的个人人际网络分析系统。该系统运用矩阵分析算法和网络图技术,通过分析现实竞争环境中企业行动者的个人人际网络结构,识别网络中的结构洞并提交分析报告,能辅助企业行动者利用其人际网络和结构洞优势来获取更有效的信息资源,从而不断实现各方面创新,为企业赢得竞争优势。     

高校研究生群体的信息需求研究

研究生群体是我国高校中最为活跃的情报用户之一。应重视对其情报需求、获取能力和困难的研究，并加强提供有针对性的服务。     

海外社区信息学的专业教育与研究现状

社区信息学是研究利用信息与通讯技术(ICTs)促进社区发展的相关问题的学科。自20世纪90年代末成为一个独立的研究领域,社区信息学在世界各地,尤其是在发展中国家弱势社区的社会经济发展支持方面得到广泛应用。随着实践案例积累的日益丰富,社区信息学的教育和研究不断发展,从专业教育、专著、期刊及机构网站等方面,可看到其学科建设正在逐步完善。     

数字资源保存的研究进展、热点与前沿

文章首先辨析了数字资源保存的概念,介绍了数字资源保存的发展史和国内外研究现状。然后利用CitespaceⅡ可视化分析工具和方法构建领域知识基础（指引文）的时间序列演化图谱和时区演化图谱,并结合绘制的领域发展趋势图,分析了数字资源保存的研究进展。同时利用CitespaceⅡ可视化分析工具和方法绘制术语与关键词的混合共现网络和引文共被引聚类知识图谱,识别出数字资源保存的研究热点U,并利用爆发词或突变词探测方法探测数字资源保存的研究前沿。最后针对图书情报与档案管理学科关注最多的研究热点——数字资源长期保存,从研究主题、最佳实践、保存周期、保存技术和方法、保存策略等几个重要方面解读数字资源长期保存的研究进展。