Subject and Longitudinal Use of Books by Indian Space Technologists

A 20% stratified sample of books of the Indian Space Research Organisation's (ISRO) Satellite Centre (ISAC) Library were examined to record over 14,000 outside borrowings. The use of these books is analysed with frequency tables to pinpoint unused, least used and highly used books. Studies are made also of the relative use of books in different subject groups, longitudinal use over time, subject use of unused and highly used books and distribution of use over age and year of acquisition of the books. The paper concludes by discussing the extent of use of books at the ISAC library and providing findings concerning collection development and weeding processes.     

高校图书馆量化评估专业期刊需求程度和保障水平的研究——以吉林大学哲学专业为例

［目的/意义］建立一种能够量化评估专业期刊被需求程度、学术价值及其在图书馆馆藏中的保障率和保障质量的有效、可操作方法,从而了解专业教师对期刊种类的有序需求和图书馆保障水平,为图书馆期刊资源规划和建设提供全面、准确的量化依据。［方法/过程］以吉林大学哲学专业为研究样本,通过引入期刊使用率和保障质量的概念,将该专业教师发表论文所选期刊和论文中引用期刊排序,定量描述期刊在该专业中的被需求程度和学术价值;通过综合考虑馆藏缺失期刊是否是核心或SCI期刊及其在被引频次和使用率排序中的位置,评估图书馆对期刊的保障质量。［结果/结论］得出期刊引频和使用率随期刊排序号的变化遵从e指数衰减规律。与传统的被引频次排序和保障率排序相比,使用率排序能更准确地描述学科对期刊的需求程度,保障质量能更好地反映图书馆对期刊需求的保障水平。     

Medical faculty use of the journal literature, publishing productivity and the size of health sciences library journal collections.

OBJECTIVES: This 1990-1991 study explored the relationship between the size of health sciences library journal collections and the number of different journals cited by medical school faculty in departments of biochemistry and medicine. METHODS: Two regression equations, including variables associated with a national stratified sample of 622 faculty who published articles during those two years, were used to explore factors correlated with variations in faculty use of the journal literature and faculty publishing productivity. RESULTS: Results suggest that, after controlling for other variables in the models, neither the number of different journals those faculty cited, nor the number of articles they published, had statistically significant correlations with the number of journals in the health sciences library collection. CONCLUSION: The traditional view that the size of an academic health sciences library's journal collection is a good measure of how well that library is positioned to support faculty research may not be entirely accurate.     

Stacks,Serials, Search Engines,and Students' Success: First-Year Undergraduate Students' Library Use,Academic Achievement,and Retention

Like other units within colleges and universities, academic libraries are subject to increasing internal and external pressures to demonstrate their contributions to institutional goals related to students' success. The purpose of this study was to investigate the relationships between first-year undergraduate students' use of the academic library, academic achievement, and retention. Results of ordinary least squares regressions predicting first-year students' cumulative grade point averages (GPA) and logistic regressions predicting students' first-year to second-year retention suggest that students who used academic library services and resources at least once during the academic year had higher GPA and retention on average than their peers who did not use library services. The results of two separate regressions predicting students' GPA by 10 different types of library use suggest that four library use areas were consistently and positively associated with students' GPA: database logins, book loans, electronic journal logins, and library workstation logins. The results of two separate logistic regression analyses suggest that logging into databases and using library workstations were actions consistently and positively associated with students' retention. Additional results predicted by students' use of services at least one time and by one-unit increases in the frequency of library area uses are discussed.     

On the time evolution of received citations,in different scientific fields: An empirical study

The time evolution of mean received citations is calculated on a sample of journals from two ISI subject categories (“Chemistry, multidisciplinary”, ISI Science Edition, and “Management”, ISI Social Science edition) with the use of an original methodology. Mean received citations are plotted against the time gap in years existing between publication of the cited article and received citations. For most Chemistry journals in the sample the maximum number of average received citations occurs two years after publication, and then a decrease is experimented. Some peculiar cases present a different trend. Management journals, conversely, do not present in most cases a peak of citations: average received citations instead grow from year of publication to the age of 10 years (maximum time gap studied). A subsample of journals show similar results for longer time series (up to 23 years). Medians of average received citations per year partly show a similar behavior. Results suggest that citedness follows very different trends in very different fields, and partly suggest why differences in Journal Impact Factor exist between different categories. At the end of the work conclusions are drawn, together with suggestions for future research.     

A Study of Correlation of Use,Citation and Publishing of Journal Papers by Indian Space Technologists

Patterns of the publishing of papers in journals by Indian space technologists and their use and citation were studied Pearson correlation coefficient has been calculated to find out the correlation and to test the null hypothesis that there is no correlation among publishing in journals, citing from journals and use of journals by a defined set of researchers. A slight positive correlation between citing from journals and publishing in journals is indicated by the study. It is concluded that a more tightly controlled study with a larger and homogeneous sample might result in a better correlation.     

我国学术期刊的学科分布及评价

依据中国学科分类国家标准《学科分类与代码》,揭示了我国学术期刊的学科分布状况,并从人均期刊数和论文产出率两个角度对各个学科的期刊进行横向比较和评价,对部分学科还进行了中美两国之间的论文生产率比较研究。结果表明,中国学术期刊存在着学科结构不合理的现象。     

预防医学与公共卫生学综合类中国科技核心期刊2012—2018年计量指标分析

为提升预防医学与公共卫生学综合类中国科技核心期刊学术质量和学术影响力,通过2013—2019年出版的《中国科技期刊引证报告（核心版）》收集总被引频次、影响因子、即年指标、他引率、AR论文量、平均引文数、平均作者数、基金论文比等资料,采用线性混合模型分析2012—2018年各个指标年份间差异及变化趋势,并对总被引频次和影响因子进行排序。结果显示,2012—2018年,预防医学与公共卫生学综合类中国科技核心期刊由16种增加至22种,均为中文期刊,连续收录16种。影响因子、即年指标、AR论文量、平均引文数和平均作者数2012—2018年均呈上升趋势（P < 0.05）,总被引频次、他引率和基金论文比无明显变化趋势（P>0.05）;预防医学与公共卫生学综合类中国科技核心期刊学术质量和学术影响力不断提升。     

A comparison among citation-based journal indicators and their relative changes with time

This study compares the two-year impact factor (JIF2), JIF2 without journal self-citation (JIF2_noJSC), five-year impact factor (JIF5), eigenfactor score and article influence score (AIS) and investigates their relative changes with time. JIF2 increased faster than JIF5 overall. The relative change between JIF2 and JIF_noJSC shows that the control of JCR over journal self-citation is effective to some extent. JIF5 is more discriminative than JIF2. The correlation between JIF5 and AIS is stronger than that between JIF5 and the eigenfactor score. The relative change in journal rank according to different indicators varies with the ratio of the indicators and can be up to 60 % of the number of journals in a subject category. There is subject category discrepancy in the average AIS and its change over time. Through the screening of journals according to variations in the ratio of JIF2 to JIF5 for journals in individual subject categories, we found that journals in the same subject categories can have considerably different citation patterns. To provide a fair comparison of journals in individual subject categories, we argue that it is better to replace JIF2 with the ready-made JIF5 when ranking journals.     

从引文分析看档案学与图书馆学、情报学的学科融合

从引文分析的角度,利用档案期刊论文的参考文献来研究档案学借鉴图书情报领域相关知识情况及其随时间变化的发展趋势,同时,对学科交叉部分进行词频分析,把握图情档三学科关注的共同问题。从而体现出信息化战略背景下,档案学的研究对象和研究内容的拓展和延伸。     

Austere librarians--volte-face

Medical Libraries are too concerned with their customers and not interested enough in their wares. The number, nature, behavior, and satisfaction of readers and the book use by readers are extensively analyzed. Though important for library operation, such studies tend to make library staff regard and treat readers as impersonal members of a study population.As opposed to critical analysis of readers, little effort is made in this direction with respect to journals. It is, therefore, proposed that medical libraries take a hard look at the journals they offer and classify and display them in A, B, C, and D categories. The following benefits might be envisioned: the reader would be helped in looking up a subject that is not in his immediate field of specialization, the occupancy of valuable space by poor journals would be prevented, medium quality journals would strive to improve themselves, and it is even possible that poor and superfluous journals would be put out of business.     

Online tables of contents for books: effect on usage

OBJECTIVES: To explore whether the presence of online tables of contents (TOC) in an online catalog affects circulation (checkouts and inhouse usage). Two major questions were posed: (1) did the presence of online tables of contents for books increase use, and, (2) if it did, what factors might cause the increase? METHOD: A randomized and stratified design was used in tracking usage of 3,957 book titles that were previously divided into two groups: one with TOC and one without TOC. Stratification was done for year of imprint, location, subject, previous use, circulating or non-circulating status, and presence of TOC. The use was tracked by the online catalog statistics in the InnoPac online catalog for fourteen months. RESULTS: The study found that tables of contents do increase usage. It also showed a correlation in the size of the effect based on the currency of the titles. In general, even after adjusting for all of the variables (publication date, location, circulation status, subject, and previous use), the odds of a title being used increased by 45% if the titles had online tables of contents, a statistically significant impact at the 0.05 level. CONCLUSIONS: This case-control study presents new information about the impact on circulation and inhouse use when tables of contents for books are added to the online catalog record. The study helps to establish the positive role of tables of contents in online catalogs. The research establishes TOC as a major parameter that can be successfully studied using quantitative methods. The study also provides information professionals with some guidance on when enhancement of TOC is likely to be most effective in increasing the use of existing collections.     

Scholarly article seeking,reading, and use: a continuing evolution from print to electronic in the sciences and social sciences

Electronic journals are now the norm for accessing and reading scholarly articles. This article examines scholarly article reading patterns by faculty in five US universities in 2012. Selected findings are also compared to some general trends from studies conducted periodically since 1977. In the 2012 survey, over three‐quarters (76%) of the scholarly readings were obtained through electronic means and just over half (51%) of readings were read on a screen rather than from a print source or being printed out. Readings from library sources are overwhelmingly from e‐sources. The average number of articles read per month was 20.66, with most articles read by the medical and other sciences, and on average each article was read for 32 minutes.     

Citation as a Form of Library Use

The citation analysis literature of the last twenty years is selectively reviewed for papers dealing with citation accuracy, citer motivation and the relationship between citation frequency and library use of materials. Although this relationship is rather complex, the two activity measures are moderately correlated. Citation of an item should promote its use and vice versa. There are some factors, however, which inhibit a very high correlation. Faculty who cite use nonlibrary as well as library materials, and they tend to use scholarly journals which often do not circulate (circulation being one measure of library use). Citations are not simply countable data points; some are more important than others, or differ in purpose. Further, there is a subliterature detailing the degree of inaccuracy among citations. Collectively, these variables tend to dilute the correlation between use of library materials and citation frequency. These limitations notwithstanding, citations represent an auditable trail of scholarship, and citation analysis remains a useful tool for evaluation of library collections and subject literatures.     

Text Readability and the Impact of Academic Articles: An Empiri-cal Study Based on Library and Information Science北大核心

哪些因素会影响学术论文的被引次数是文献计量学领域的一个经典研究议题。目前的研究主要关注论文的内容特征和形式特征与被引次数之间的关系,鲜有研究从文本可读性视角切入这一议题。文本可读性影响读者对文本内容的理解和知识吸收,是一个关乎知识传播效率和研究成果认可度的重要因素。本研究在控制论文知识品质和权威性的基础上,使用文本可读性R值等五个变量研究论文的文本可读性对被引次数的影响。以中文图书情报学知名期刊发表于2016—2020年的论文为研究样本,研究发现论文的文本可读性R值、是否采用复合式标题、是否使用公式和表格对被引次数有显著影响,而是否使用图对被引次数没有显著影响。研究验证了中文情境下文本可读性对论文影响力的实质性作用,研究结果对科研人员改善自身的中文学术写作以及提高研究成果影响力具有重要参考价值。     

国内微信研究论文的定量分析

采用定量分析方法,对图书馆微信研究的77篇论文从时间分布、期刊分布、作者分布、主题分布、被引次数、参考文献等方面进行统计分析,发现:图书馆微信研究是一个新的研究领域,且正处于初级发展阶段;图书馆微信研究论文的主题要进一步扩展;图书馆微信研究论文的质量要进一步提升。