| 1. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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Bibliometric mapping of microbiology research topics (2012-16): A comparison by socioeconomic development and infectious disease vulnerability values
- 2019
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Ingår i: FEMS Microbiology Letters. - : Oxford University Press (OUP). - 1574-6968 .- 0378-1097. ; 366:2
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Forskningsöversikt (refereegranskat)abstract
- Amongst health-related scientific disciplines, microbiology appears to play a vital role in creating a sustainable future with respect to health, the environment and a biobased economy. Microbiology research covers a wide range of different disciplines and addresses many important global issues. This study aimed to identify topics being addressed within the last 5 years (2012-16) in the field of microbiology worldwide and to compare them in terms of three different indicators: gross domestic product, Human Development Index and Infectious Disease Vulnerability Index. The dataset of this study comprised 167 874 articles and reviews from 2012 to 2016, which were extracted from the Web of Science Medline. To identify and visualise the topics addressed during the studied period, VOSviewer was used. The construction and visualisation of the term map was done based on 5918 MESH subject headings. The methodology and procedures employed included Kruskal-Wallis test and two-sample proportion test. Overall, our study showed that the field of microbiology has focused on six different topics during 2012-16. The papers written with the collaboration of countries with low socioeconomic status and high vulnerability to infectious diseases mainly addressed topics related to the primary needs of people such as food safety, the prevention and control of infectious diseases, food and energy poverty. In contrast, papers written with the collaboration of countries with high socioeconomic development status and less vulnerability to infectious diseases mainly focused on big data, alternative methods to animal experiments.
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| 2. |
- Dehdarirad, Tahereh, 1984
(författare)
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Can the presence of author photograph and biography have an impact on article citations? The case of Chemistry and Chemical Engineering
- 2022
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Ingår i: Quantitative Science Studies. - : MIT Press. - 2641-3337. ; 3:4, s. 1024-1039
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to investigate whether the presence of author photograph and biography in scientific articles could have an impact on article citations. The impact of photograph and biography, in combination with the author characteristics i.e., gender, affiliation country (measured as whether the author was affiliated to a high-income country or not), and scientific impact (measured as whether the author was a high impact author or not), was also examined, whilst controlling for several covariates. This study focused on a sample of articles published in the time span of 2016–2018 in Chemistry and Chemical Engineering journals by Elsevier. The articles were downloaded from Scopus. The analysis was done using random effects within-between model analyses. Within authors, the results showed no significant impact of author photograph and biography on the geomean of citations. Different patterns were found for visibility of articles, when author photograph and biography was combined with author characteristics. While being affiliated to a high-income country and being a high impact author had a positive impact on citations, gender (female) had a negative impact. For gender, there was a small citation disadvantage of 5% for female authors when they provided a photograph and biography.
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| 3. |
- Dehdarirad, Tahereh, 1984
(författare)
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Could early tweet counts predict later citation counts? A gender study in Life Sciences and Biomedicine (2014–2016)
- 2020
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Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203 .- 1932-6203. ; 15:11
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Tidskriftsartikel (refereegranskat)abstract
- In this study, it was investigated whether early tweets counts could differentially benefit female and male (first, last) authors in terms of the later citation counts received. The data for this study comprised 47,961 articles in the research area of Life Sciences & Biomedicine from 2014–2016, retrieved from Web of Science’s Medline. For each article, the number of received citations per year was downloaded from WOS, while the number of received tweets per year was obtained from PlumX. Using the hurdle regression model, I compared the number of received citations by female and male (first, last) authored papers and then I investigated whether early tweet counts could predict the later citation counts received by female and male (first, last) authored papers. In the regression models, I controlled for several important factors that were investigated in previous research in relation to citation counts, gender or Altmetrics. These included journal impact (SNIP), number of authors, open access, research funding, topic of an article, international collaboration, lay summary, F1000 Score and mega journal. The findings showed that the percentage of papers with male authors in first or last authorship positions was higher than that for female authors. However, female first and last-authored papers had a small but significant citation advantage of 4.7% and 5.5% compared to male-authored papers. The findings also showed that irrespective of whether the factors were included in regression models or not, early tweet counts had a weak positive and significant association with the later citations counts (3.3%) and the probability of a paper being cited (21.1%). Regarding gender, the findings showed that when all variables were controlled, female (first, last) authored papers had a small citation advantage of 3.7% and 4.2% in comparison to the male authored papers for the same number of tweets.
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| 4. |
- Dehdarirad, Tahereh, 1984
(författare)
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Gender and Bibliometrics: A Review
- 2020
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Ingår i: Handbook Bibliometrics. - : De Gruyter. ; , s. 335-363
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This study provides a comprehensive review of the literature regarding the main bibliometric indicators in relation to gender and the underlying factors which have an effect on the research productivity and impact of female and male scholars. The main indicators studied in the literature were the number of publications, the number of citations, self-citations, Journal Impact Factor, h-Index, authorship positions, and collaboration patterns. The literature on the visibility of scholars from the point of social media metrics has also been appraised. Underlying factors have a complex and inconclusive impact on productivity. The literature was divided into two groups, based on personal and structural factors.
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| 5. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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Gender differences in citation sentiment: A case study in Life Sciences and Biomedicine
- 2024
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Ingår i: Journal of Information Science. - : SAGE Publications. - 0165-5515 .- 1741-6485. ; 50:1, s. 53-65
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Tidskriftsartikel (refereegranskat)abstract
- In this study we investigated whether female and male authors in the field of life sciences and biomedicine differed in their tendency for citation and citation sentiment. The data comprised two sets, cited set and citing set. Cited set comprised 17,237 articles whereas citing set comprised 115,935 articles. The cited set which is from the area Life Sciences & Biomedicine and published during 2012– 2016 was retrieved from the Web of Science Medline. The citing set and its citation contexts wereretrieved using Colil database. The analysis was done using a combination of homophily analysis, regression analysis and a chi-squared test. The covariates in the regression analyses were features related to authors, journal, institution, country, and abstract readability. The homophily analysis showed a significant tendency for female (8%) and male (14%) authorship teams to cite papers by the same gender composition teams. Additionally, the results of regression analysis (Model 1) and pairwise comparisons showed that male authored papers received a significant higher positive sentiment compared to female authored papers. The results of regression analysis (Model 2) showed a small significant positive association between gender similarity of cited and citing authorship teams and the sentiment score. However, further analysis using the chi-squared test showed a significant lower tendency for women to use positive terms when citing the research findings of papers with the same gender composition. Men, in contrast, used significantly more positive terms when citing papers with the same gender composition. Finally, lay summary for a cited paper, country similarity and the venue of cited publication when it was a mega journal had a positive significant association with the sentiment score received.
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| 6. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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Gender differences in the use of positive and negative terms by authorship teams: a study of citation contexts
- 2022
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The way in which women present their research accomplishments, in comparison to men, has been regarded as one of the factors causing gender gaps in academic life sciences (Lerchenmueller, Sorenson and Jena, 2019). As the notion of 'excellence' within audit cultures in academia implicitly reflects images of masculinity, the promotion of research findings for women might be considered counter stereotypical behaviour. Women might be criticised for this behaviour, even sometimes by other women (Rudman, 1998; McKinnon and O’Connell, 2020).The aim of this study was to investigate whether there is a difference between authorship teams, in terms of the use of positive/negative terms, when citing papers of the same gender composition teams.
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| 7. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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How Does Media Reflect the OA and Non-OA Scientific Literature? A Case Study of Environment Sustainability
- 2020
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Ingår i: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). - Cham : Springer International Publishing. - 1611-3349 .- 0302-9743. ; 12051, s. 768-781
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Konferensbidrag (refereegranskat)abstract
- News outlets and popular science magazines have played an important role in increasing the public’s knowledge, engagement with and understanding of global environmental issues in recent years. Increased access to scholarly outputs might foster a culture of greater scientific education, which in turn could have a direct impact on public policy. This paper aimed to study: (i) Which topics in the area of environmental sustainability have been communicated to the members of the public via News and Popular Science articles. (ii) If these topics were also found in OA and Non-OA scientific articles. Three data sets comprising documents published between 2014 and 2018 were obtained from ProQuest and Scopus databases. Our findings showed four topics have been communicated to the general public via News and Popular Science articles. ‘Environmental protection’ and ‘Socio-economic aspects of environmental sustainability’ were the common topics amongst OA, Non-OA and News and Popular Science articles. Although the three sets had two topics in common, they placed different levels of importance on different topics. In the OA set ‘Biodiversity management & wildlife conservation’ and ‘Sustainable agriculture’ were regarded as motor topics. In the News and Popular Science set, ‘Environmental policy’ appeared as a well-developed and motor topic.
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| 8. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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Is there alignment amongst scientific literature, news media and patient forums regarding topics?: A study of breast and lung cancer
- 2021
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Ingår i: Online Information Review. - 1468-4527 .- 1468-4535. ; 45:5, s. 983-999
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: During recent years, web technologies and mass media have become prevalent in the context of medicine and health. Two examples of important web technologies used in health are news media and patient forums. Both have a significant role in shaping patients' perspective and behaviour in relation to health and illness, as well as the way that they might choose or change their treatment. In this paper, the authors investigated the application of web technologies using the data analysis approach. The authors did this analysis from the point of view of topics being discussed and disseminated via patients and journalists in breast and lung cancer. The study also investigated the (dis)alignment amongst these two groups and scientists in terms of topics. Design/methodology/approach: Three data sets comprised documents published between 2014 and 2018 obtained from ProQuest and Web of Science Medline databases, alongside data from three major patient forums on breast and lung cancer. The analysis and visualisation in this paper have been done using the udpipe, igraph R packages and VOSviewer. Findings: The study’s findings showed that in general scientists focussed more on prognosis and treatment of cancer, whereas patients and journalists focussed more on detection, prevention and role of social and emotional support. The only exception was for news coverage of lung cancer where the largest cluster was related to treatment, research in cancer treatment and therapies. However, when comparing coverage by scientists and journalists in terms of treatment, the focus of news articles in both cancer types was mainly on chemotherapy and complimentary therapies. Finally, topics such as lifestyle or pain management were only discussed by breast cancer patients. Originality/value: The results obtained from this study may provide valuable insights into topics of interest for each group of scientists, journalist and patients as well as (dis)alignment among them in terms of topics. These findings are important as scientific research is heavily dependent on communication, and research does not exist in a bubble. Scientists and journalists can gain insights from patients' experiences and needs, which in turn may help them to have a more holistic and realistic view. Peer review: The peer review history for this article is available at: https://publons.com/publon/10.1108/OIR-06-2020-0228
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| 9. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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News media attention in Climate Action: latent topics and open access
- 2021
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Ingår i: Scientometrics. - : Springer Science and Business Media LLC. - 0138-9130 .- 1588-2861. ; 126:9, s. 8109-8128
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Tidskriftsartikel (refereegranskat)abstract
- In this study we investigated whether open access could assist the broader dissemination of scientific research in Climate Action (Sustainable Development Goal 13) via news outlets. We did this by comparing (i) the share of open and non-open access documents in different Climate Action topics, and their news counts, and (ii) the mean of news counts for open access and non-open access documents. The data set of this study comprised 70,206 articles and reviews in Sustainable Development Goal 13, published during 2014–2018, retrieved from SciVal. The number of news mentions for each document was obtained from Altmetrics Details Page API using their DOIs, whereas the open access statuses were obtained using Unpaywall.org. The analysis in this paper was done using a combination of (Latent Dirichlet allocation) topic modelling, descriptive statistics, and regression analysis. The covariates included in the regression analysis were features related to authors, country, journal, institution, funding, readability, news source category and topic. Using topic modelling, we identified 10 topics, with topics 4 (meteorology) [21%], 5 (adaption, mitigation, and legislation) [18%] and 8 (ecosystems and biodiversity) [14%] accounting for 53% of the research in Sustainable Development Goal 13. Additionally, the results of regression analysis showed that while keeping all the variables constant in the model, open access papers in Climate Action had a news count advantage (8.8%) in comparison to non-open access papers. Our findings also showed that while a higher share of open access documents in topics such as topic 9 (Human vulnerability to risks) might not assist with its broader dissemination, in some others such as topic 5 (adaption, mitigation, and legislation), even a lower share of open access documents might accelerate its broad communication via news outlets.
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| 10. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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Quantifying the reproducibility of scientometric analyses: a case study
- 2018
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Ingår i: 23rd international conference on science and technology indicators (STI 2018).
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Konferensbidrag (refereegranskat)abstract
- Reproducibility of scientific articles and their findings has gained importance in the last years. Although most efforts have been made in biomedicine, health and psychology science, reproducibility is important and necessary in all the research fields. Thus, in this contribution an empirical evaluation of the reproducibility of scientometric studies was carried out. To do so, 285 articles published in the journal of Scientometrics in 2017 were examined in term of the following reproducibility artifacts: workflow, search strategy, database, software, the availability of the source code (where applicable) and the availability of the dataset. Our findings showed that whilst workflow and search strategy were well described in the majority of articles, the dataset used was shared by very few studies. The data was usually retrieved from the WoS and Scopus databases. Finally, a few articles shared the source code where ad-hoc software was used.
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| 11. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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Social media visibility of open access versus non-open access articles: A case study of Life Sciences & Biomedicine
- 2019
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Ingår i: 17th International Conference on Scientometrics and Informetrics, ISSI 2019 - Proceedings. ; 1, s. 762-769
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Konferensbidrag (refereegranskat)abstract
- This study aims to determine whether and to what extent OA status of articles predicts their social media visibility when controlling for a considerable number of important factors. These factors which previous research confirmed their positive associations with altmetric counts are journal impact, individual collaboration, research funding, number of MESH topics, international collaboration, lay summary, and F1000 Score. The data for this study comprises 83,479 articles and reviews in the research area of Life Sciences & Biomedicine from 2012-2016, retrieved from the Medlin in November 2018. The results showed that (except for policy documents) the percentage of OA articles mentioned on altmetrics platforms was significantly higher than that of the NOA articles. Furthermore, OA factor is significantly associated with the increasing number of tweets, news posts, Facebook posts and blog posts and decreasing zero counts on each platform. Finally, OA status of articles is likely to increase the number of tweets, Facebooks posts, news posts, and blog posts by 97.6%, 25.2%, 78.2% and 51.4%, respectively.
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| 12. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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The impact of information about authors and paper research topic on citation disparities: a gender perspective
- 2017
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Ingår i: 22nd Nordic Workshop on Bibliometrics and Research Policy.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Gender disparity in terms of citation performance has been widely documented in the scientific literature. Some research suggests that women’s publications are cited at lower rates than men’s publications, whilst others have found the opposite results or no differences. The process of scientific citations seems to be subject to considerable biases. As an example, it is believed that information about authors with regard to country or university might have a negative effect on the number of received citations. The research topic of an article is also believed to have an effect on received citations. Thus, biases may also be due to the research topic of an article. Females and male researchers differ in their research interests. This study aims to investigate whether there is a gender bias in citing scholars, when controlling for the availability of information about authors (i.e. affiliation, biography, and photographs) and the topic of their papers. There are three objectives. First, to compare the number of citations received by female and male authors. Second, to compare female and male authors’ citations received based on the availability of authors’ information. Third, to compare female and male authors’ number of citations received in papers with similar topics. The dataset of this study is composed of a sample of articles and reviews published by the top 5 % of highly productive authors in the field of chemistry, retrieved from the WOS database between 2012 and 2014. In order to control for the impact of author byline order, we only focused on those records where the productive author was the corresponding author.
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| 13. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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To What Extent Does the Open Access Status of Articles Predict Their Social Media Visibility? A Case Study of Life Sciences and Biomedicine
- 2020
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Ingår i: Journal of Altmetrics. - : Levy Library Press. - 2577-5685. ; 3:1
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Tidskriftsartikel (refereegranskat)abstract
- This study aimed to determine whether, and to what extent, the OA status and OA type of articles can predict their social media visibility, when controlling for a considerable number of important factors. Those factors, which previous research confirmed their positive association with altmetric counts, were journal impact, individual collaboration, research funding, number of MESH topics, topic, international collaboration, lay summary, being a mega journal, F1000 Score, and gender of first and last authors. The data for this study comprised 83,444 articles and reviews in the research area of Life Sciences and Biomedicine from 2012–2016, retrieved from Medline in November 2018. The results showed that the percentage of OA articles mentioned on altmetric platforms was significantly higher than those of the non-OA articles. Furthermore, Open Access was significantly associated with a higher probability of a paper being mentioned on the studied social media platforms. Compared to non-OA articles, the OA articles had a higher average of tweets, Facebooks posts, news posts, and blog posts. By increase of a unit in the OA status, the average number of tweets, Facebooks posts, news posts, and blog posts increased by 92.7%, 25.7%, 83.9% and 48.4%, respectively. Regarding the OA types (studied as Gold vs non-Gold), our findings showed that the Gold OA articles had a higher average number of Tweets and a higher probability of being mentioned in tweets and blogs.
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| 14. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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Use of positive terms and certainty language in retracted and non-retracted articles: The case of biochemistry
- 2023
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Ingår i: Journal of Information Science. - 0165-5515 .- 1741-6485. ; In Press
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Tidskriftsartikel (refereegranskat)abstract
- This study aimed to compare retracted (due to misconduct) and non-retracted articles in biochemistry, in terms of proportion of positive terms, certainty score and different certainty aspects. The data set of this study composed of 662 retracted and non-retracted articles published in the time period of 2018-2020 and indexed in Scopus. These 662 articles accounted for 331 non-retracted and 331 retracted articles, which were matched using matching and covariate balancing analysis. The analysis in this article was done using several regression models. Regarding the use of positive terms, the findings showed that retracted articles were 16% less probable to use positive terms in abstracts, titles and findings presented in conclusion and discussion compared with non-retracted articles. In addition, the results regarding the analysis of certainty language, showed that retracted articles were 15% less probable to use certain language, measured by certainty score, in presenting their scientific findings. Finally, regarding the certainty aspects, the results of regression models showed that retracted articles had 11% less likelihood to present their research findings using certain probability aspect.
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| 15. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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Use of social media sites and readership diversity: A case study at Chalmers University of Technology
- 2019
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Konferensbidrag (refereegranskat)abstract
- Social media has provided new opportunities for academics to disseminate their research results. They allow users to upload academic papers and links to published papers, track demand for their published articles, and engage in professional discussions with other users (Meishar-Tal and Efrat Pieterse, 2017). This paper aimed to study the use of academic and non-academic profiling sites and platforms amongst scholars at Chalmers University of Technology.We were also interested in the purpose that scholars had for using these platforms. Furthermore, using data about people who register in Mendeley as readers of papers, this article explored diverse types of users of scientific papers by scholars at Chalmers. These gave us insight into the different social media platforms being used, the purpose of use, the readers’ status and their topics of interest at Chalmers. Furthermore, this helped us to provide statistics on how scholarly publications at Chalmers are used for scientific, educational, or other professional purposes.
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| 16. |
- Dehdarirad, Tahereh, 1984, et al.
(författare)
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Which Type of Research is Cited More Often in Wikipedia? A Case Study of PubMed Research
- 2018
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Ingår i: STI 2018 Conference Proceedings. - 9789090312040 ; , s. 604-611
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Konferensbidrag (refereegranskat)abstract
- This study examines the characteristics of medical articles cited in Wikipedia and compares them with a sample of medical articles not cited in the platform. The aim is to determine the reasons why some articles are selected as reliable sources for Wikipedia and others are not. The characteristics studied are document type, open access status of article, article topic, article F1000 class and F1000 count, article tweet count, and article news count. The findings show a document type similarity for both cited and uncited sets of articles, with articles, reviews and editorial materials being more visible in both sets. While the articles cover a broad range of topics, the top three topics are the same in both sets. The results also reveal that Wikipedia favors OA articles, although a large number of cited articles are non-OA. Finally, significant, although weak correlations are found between Wiki citation counts and F1000, tweet and news counts. While F1000 and tweet counts correlate negatively with Wikipedia citation counts, news counts show a positive correlation, although the weakest compared to the other correlations.
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| 17. |
- Sotudeh, Hajar, et al.
(författare)
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Gender differences in scientific productivity and visibility in core neurosurgery journals: Citations and social media metrics
- 2018
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Ingår i: Research Evaluation. - : Oxford University Press (OUP). - 0958-2029 .- 1471-5449. ; 27:3, s. 262-269
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Tidskriftsartikel (refereegranskat)abstract
- Social media has provided new opportunities for both female and male academics to disseminate their research results, and presence on the Internet is found to increase the visibility of scholars. Thus, this study examined whether there were differences in terms of scientific productivity or the visibility (both in terms of citations and social media metrics) of female and male scholars in the field of neurosurgery. To do this, 11,127 articles and reviews from 2012 to 2014 were extracted from the Thomson Reuters Web of Science database. This accounted for 14,944 unique authors. To study the visibility of neurosurgery scholars in terms of social media metrics, the following altmetric indicators were used: Mendeley readers, the post count of news, tweets, blogs, LinkedIn, and Facebook. The methodology and procedures employed included descriptive statistics, chi-square test, two-sample proportion test, and analysis of covariance. The results demonstrated that the number of female scholars was significantly lower compared to their male counterparts. Additionally, female neurosurgery scientists were found to be slightly less prolific in terms of scientific productivity. However, women were slightly more visible with regard to citations, readership, and tweets. Finally, both genders were similarly successful in terms of receivingmentions from blogs, news, Facebook, or LinkedIn.
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