Archives des mots-clés : Impact Factor

Agriculture Journals Covered by Directory of Open Access Journals: An Analytical Study

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Author : Muruli Acharya

With the advent of open access movement, open access journals (OAJs) being the prodigious source of academic and research information have been gaining significant magnitude.

The electronic age has made it easier and more convenient than ever to break barriers to research information. The present study aims to study and analyse the status of 497 OAJs in Agriculture indexed in Directory of Open Access Journals.

Specified traits such as Geographic and language wise distribution, coverage of Indexing/Abstracting databases, ranking of journals according to Impact Factor (IF), OA licensing model adopted, policy of plagiarism, visibility on social media and related issues of the OAJs in Agriculture are evaluated in the paper.

Results indicated the dominance of De Gruyter Open as a publisher with highest number of OAJs, English as a content language, Indonesia with highest number of OAJs, Google scholar with highest journals indexed.

The study observes the increasing migration of journals from commercial practice to OA. Frontiers in Plant Science found with highest Impact Factor among OAJs in Agriculture.

URL : Agriculture Journals Covered by Directory of Open Access Journals: An Analytical Study

Alternative location : http://publications.drdo.gov.in/ojs/index.php/djlit/article/view/13114

The Journal Impact Factor: A brief history, critique, and discussion of adverse effects

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Authors : Vincent Lariviere, Cassidy R. Sugimoto

The Journal Impact Factor (JIF) is, by far, the most discussed bibliometric indicator. Since its introduction over 40 years ago, it has had enormous effects on the scientific ecosystem: transforming the publishing industry, shaping hiring practices and the allocation of resources, and, as a result, reorienting the research activities and dissemination practices of scholars.

Given both the ubiquity and impact of the indicator, the JIF has been widely dissected and debated by scholars of every disciplinary orientation. Drawing on the existing literature as well as on original research, this chapter provides a brief history of the indicator and highlights well-known limitations-such as the asymmetry between the numerator and the denominator, differences across disciplines, the insufficient citation window, and the skewness of the underlying citation distributions.

The inflation of the JIF and the weakening predictive power is discussed, as well as the adverse effects on the behaviors of individual actors and the research enterprise. Alternative journal-based indicators are described and the chapter concludes with a call for responsible application and a commentary on future developments in journal indicators

URL : https://arxiv.org/abs/1801.08992

Scientist impact factor (SIF): a new metric for improving scientists’ evaluation?

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Authors : Giuseppe Lippi, Camilla Mattiuzzi

Background

The publication of scientific research is the mainstay for knowledge dissemination, but is also an essential criterion of scientists’ evaluation for recruiting funds and career progression.

Although the most widespread approach for evaluating scientists is currently based on the H-index, the total impact factor (IF) and the overall number of citations, these metrics are plagued by some well-known drawbacks. Therefore, with the aim to improve the process of scientists’ evaluation, we developed a new and potentially useful indicator of recent scientific output.

Methods

The new metric scientist impact factor (SIF) was calculated as all citations of articles published in the two years following the publication year of the articles, divided by the overall number of articles published in that year. The metrics was then tested by analyzing data of the 40 top scientists of the local University.

Results

No correlation was found between SIF and H-index (r=0.15; P=0.367) or 2 years H-index (r=−0.01; P=0.933), whereas the H-Index and 2 years H-index values were found to be highly correlated (r=0.57; P<0.001). A highly significant correlation was also observed between the articles published in one year and the total number of citations to these articles in the two following years (r=0.62; P<0.001).

Conclusions

According to our data, the SIF may be a useful measure to complement current metrics for evaluating scientific output. Its use may be especially helpful for young scientists, wherein the SIF reflects the scientific output over the past two years thus increasing their chances to apply to and obtain competitive funding.

URL : http://atm.amegroups.com/article/view/15375

 

What are the personal and professional characteristics that distinguish the researchers who publish in high- and low-impact journals? A multi-national web-based survey

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Authors : Carlos Eduardo Paiva, Raphael L C Araujo, Bianca Sakamoto Ribeiro Paiva, Cristiano de Pádua Souza, Flavio Mavignier Cárcano, Marina Moreira Costa, Sérgio Vicente Serrano, João Paulo Nogueira Lima

Purpose

This study identifies the personal and professional profiles of researchers with a greater potential to publish high-impact academic articles.

Method

The study involved conducting an international survey of journal authors using a  web-based questionnaire. The survey examined personal characteristics, funding, and the perceived barriers of research quality, work-life balance, and satisfaction and motivation in relation to career.

The processes of manuscript writing and journal publication were measured using an online questionnaire that was developed for this study. The responses were compared between the two groups of researchers using logistic regression models.

Results

A total of 269 questionnaires were analysed. The researchers shared some common perceptions; both groups reported that they were seeking recognition (or to be leaders in their areas) rather than financial remuneration.

Furthermore, both groups identified time and funding constraints as the main obstacles to their scientific activities.

The amount of time that was spent on research activities, having >5 graduate students under supervision, never using text editing services prior to the publication of articles, and living in a developed and English-speaking country were the independent variables that were associated with their article getting a greater chance of publishing in a high-impact journal.

In contrast, using one’s own resources to perform studies decreased the chance of publishing in high-impact journals.

Conclusions

The researchers who publish in high-impact journals have distinct profiles compared with the researchers who publish in low-impact journals.

English language abilities and the actual amount of time that is dedicated to research and scientific writing, as well as aspects that relate to the availability of financial resources are the factors that are associated with a successful researcher’s profile.

URL : What are the personal and professional characteristics that distinguish the researchers who publish in high- and low-impact journals? A multi-national web-based survey

DOI : http://dx.doi.org/10.3332/ecancer.2017.718

A Large-Scale Analysis of Impact Factor Biased Journal Self-Citations

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Authors : Caspar Chorus, Ludo Waltman

Based on three decades of citation data from across scientific fields of science, we study trends in impact factor biased self-citations of scholarly journals, using a purpose-built and easy to use citation based measure.

Our measure is given by the ratio between i) the relative share of journal self-citations to papers published in the last two years, and ii) the relative share of journal self-citations to papers published in preceding years.

A ratio higher than one suggests that a journal’s impact factor is disproportionally affected (inflated) by self-citations. Using recently reported survey data, we show that there is a relation between high values of our proposed measure and coercive journal self-citation malpractices.

We use our measure to perform a large-scale analysis of impact factor biased journal self-citations. Our main empirical result is, that the share of journals for which our measure has a (very) high value has remained stable between the 1980s and the early 2000s, but has since risen strongly in all fields of science.

This time span corresponds well with the growing obsession with the impact factor as a journal evaluation measure over the last decade.

Taken together, this suggests a trend of increasingly pervasive journal self-citation malpractices, with all due unwanted consequences such as inflated perceived importance of journals and biased journal rankings.

URL : A Large-Scale Analysis of Impact Factor Biased Journal Self-Citations

DOI : http://dx.doi.org/10.1371/journal.pone.0161021

A simple proposal for the publication of journal citation distributions

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Authors : Vincent Larivière, Véronique Kiermer, Catriona J. MacCallum, Marcia McNutt, Mark Patterson, Bernd Pulverer, Sowmya Swaminathan, Stuart Taylor, Stephen Curry

Although the Journal Impact Factor (JIF) is widely acknowledged to be a poor indicator of the quality of individual papers, it is used routinely to evaluate research and researchers. Here, we present a simple method for generating the citation distributions that underlie JIFs.

Application of this straightforward protocol reveals the full extent of the skew of distributions and variation in citations received by published papers that is characteristic of all scientific journals.

Although there are differences among journals across the spectrum of JIFs, the citation distributions overlap extensively, demonstrating that the citation performance of individual papers cannot be inferred from the JIF.

We propose that this methodology be adopted by all journals as a move to greater transparency, one that should help to refocus attention on individual pieces of work and counter the inappropriate usage of JIFs during the process of research assessment.

URL : A simple proposal for the publication of journal citation distributions

Alternative location : http://www.biorxiv.org/content/early/2016/07/05/062109.abstract

How do scientists perceive the current publication culture? A qualitative focus group interview study among Dutch biomedical researchers

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Design

Qualitative focus group interview study.

Setting

Four university medical centres in the Netherlands.

Participants

Three randomly selected groups of biomedical scientists (PhD, postdoctoral staff members and full professors).

Main outcome measures

Main themes for discussion were selected by participants.

Results

Frequently perceived detrimental effects of contemporary publication culture were the strong focus on citation measures (like the Journal Impact Factor and the H-index), gift and ghost authorships and the order of authors, the peer review process, competition, the funding system and publication bias. These themes were generally associated with detrimental and undesirable effects on publication practices and on the validity of reported results.

Furthermore, senior scientists tended to display a more cynical perception of the publication culture than their junior colleagues. However, even among the PhD students and the postdoctoral fellows, the sentiment was quite negative. Positive perceptions of specific features of contemporary scientific and publication culture were rare.

Conclusions

Our findings suggest that the current publication culture leads to negative sentiments, counterproductive stress levels and, most importantly, to questionable research practices among junior and senior biomedical scientists.

URL : How do scientists perceive the current publication culture? A qualitative focus group interview study among Dutch biomedical researchers

Alternative location : http://bmjopen.bmj.com/content/6/2/e008681.full