125 research outputs found

    The Online Attention to Otorhinolaryngology Research: An Altmetric Analysis (1967-2021)

    Get PDF
    Background: As a new approach and complementary to traditional bibliometrics, altmetrics measures the influence of scientific research in social media tools and applications. Aim: This study aimed at comprehensively analyzing research output in otorhinolaryngology research from its beginning in 1967 to 2021. Methods: Using Scimago Journal Ranking (SJR), 107 otorhinolaryngology journals were retrieved. Of them, 84 journals with their 89044 papers as well as their altmetric scores were extracted from the Altmetric Explorer in 28 February 2022. The citation rates of the top ten papers having high altmetric scores were retrieved from Google Scholar, Scopus, Web of Science and Dimensions. Data were analyzed in excel. Results: 67,529 otorhinolaryngology papers (75%) were mentioned 2,901,187 times in 17 different social media tools. The highest altmetric score of papers amounted to 3,989. The top-ranked media were Nendeley and Twitter, respectively. The USA was the first ranked country in Twitter and Facebook and the UK was such in News Outlet and Policy. The highest mentioned journal was JAMA Otolaryngology–Head & Neck Surgery. The top affiliation in sharing papers was Harvard University with 1621 shared papers. All of the top 10 papers in altmetric scores were multi-authored original research articles.. Conclusion: As one of the first altmetric studies in otorhinolaryngology field, this study provided helpful information for potential authors, researchers, research institutes and journals in the field in increasing the reach and influence of their researches

    Estimating the Online Presence of COVID-19 Papers in Social Media: An Altmetric Study

    Get PDF
    Introduction:  As the significant pandemic of the millennium, COVID-19 attracted research interest worldwide, and many papers have been published on the topic and increasingly shared in different social media. This study aimed to estimate the presence of COVID-19 papers in social media. Methods: In this altmetric survey, Altmetric Explorer was used for data extraction. A comprehensive unlimited search was done on 9 July 2022 for COVID-19 papers mentioned at least once on social media. All 162,068 related papers as the study population was analyzed in Excel 2016 and SPSS v22. Results: 151,956 COVID-19 papers (93.76%) were mentioned at least once on social media. Most papers (100,295) were within the altmetric attention score ranging from 1-10. As the top-ranked source, Twitter mentioned 144,073 papers (88.90%), followed by Mendeley, covering 129,328 (79.79%), papers and News Outlet covering 39,445 papers (24.33%). Most Twitter, Facebook, and News users were from the USA and the UK. "MedRexiv" ranked first with mentioning 10,971 papers, followed by the British Medical Journal with 2,122 mentioned papers and the Lancet with 692 mentioned papers. In the top highly-mentioned papers, some central aspects of the disease, such as its prevention, treatment, and vaccination, were considered as main public concerns. Conclusions: COVID-19 research has been increasingly presented in social media, which is a sign of considering COVID-19 as a primary human concern. Thus, social media platforms have a prominent role in the reach and visibility of research output in COVID-19

    Exploring Global Trends in Otorhinolaryngology Research Output

    Get PDF
    Background: As an interdisciplinary field, bibliometrics analyses research publications in scientific fields. As a developing medical field, otorhinolaryngology needs to be evaluated from a bibliometric perspective. Aim: This evaluative bibliometric study aimed at analyzing and exploring global research trends in otorhinolaryngology from the beginning to year 2021. Methods: All papers published in otorhinolaryngology field that indexed in Web of Science (WoS) from 1976-2021 were extracted for analysis by conducting a certain search strategy in advanced search section within category of otorhinolaryngology in the WoS. Data were analyzed by Excel and VOSviewer for measuring bibliometric indicators and depicting visualization maps. Results: 217,027 papers were published during the studied time span. The papers increased from two items in the beginning in 1976 to 9,759 items in 2021. USA ranked first with publishing 75,742 papers, followed by Germany with 17,718 papers and England with 14,244 papers. League of European Research Universities (LERU) ranked first among research institutes with publishing 6,517 papers. In journals, Laryngoscope ranked first with publishing 17,891 papers, followed by Otolaryngology-Head and Neck Surgery with 14,340 papers and Journal of Laryngology and Otology with 11,219 papers. The majority of papers were in English (n=199,069; %91,725) and original articles (n=167,724; %77.28). After otorhinolaryngology as the first-ranked area with full coverage, surgery (n=37,586) and audiology speech language pathology (n=22,136) ranked second and third, respectively. 10 highly-occurred keywords were surgery (110), management (94), children (83), quality of life (81), squamous-cell carcinoma (78), cancer (75), head (73), radiotherapy (69), cochlear implant and noise (58) and experience (53), respectively. Co-citation clustering showed Journal of the Acoustical Society of America, Laryngoscope, Otolaryngology–Head and Neck Surgery and Journal of Allergy and Clinical Immunology as the top cited sources. Conclusion: This study is the first to give a comprehensive bibliometric analysis and visualization of global research publication in otorhinolaryngology. It recognized important and influential papers, journals, authors, research institutions, countries and topic areas as well as main considerable keywords and subject clusters and cited sources

    Global Research Trends and Hot Topics on Library and Information Science: A Bibliometric Analysis

    Get PDF
    Abstract Background and objective: One of the approaches to represent scientific publications in a field of science is to determine research trends and hot topics. Therefore, this study aimed to determine the research trends on the Library and Information Science (LIS) in the Scopus database during 2011-2020 and specify the hot topics in this field from July 2020 to July 2021. Materials and Methods: This study used scientometric techniques. The research population consisted of all papers in the field of LIS from July 2011 to July 2021. The data were collected from the Scopus database. The results were limited to 2011-2020 for determining the research trends in the field of LIS and from July 2020 to July 2021 for specifying the hot topics in this field. Data were analyzed using the word co-occurrence and social network analysis techniques, and UCINet, NetDraw, and VOSviewer software were used to draw scientific maps and identify core topics and individuals. Results: The keywords Systematic Review (frequency=531) and Bibliometrics (frequency=51) had the highest and lowest frequencies, respectively. Libraries and information technology (n=151), research methods (n=70), and databases (n=23) were the three important topic clusters in the study area, in which the United States, China, and the United Kingdom were the three most active countries, respectively. The Department of Library and Information Science, University of London, with 71 documents, and the Department of Information Management, University of Punjab, with 55 documents, had the most significant contribution of article publication among the influential institutions. Moreover, Zhang, Yut, and Wang, Liying each with 27 documents, and Li, Xiano with 24 documents were three active and influential authors in this field. In addition, systematic review , diffusion pattern , and bibliometric were also three hot topics. Conclusion: This study revealed that the orientation of the LIS research is going from traditional topics toward novel and emerging technologies. The results of this study can provide valuable information to researchers in LIS at the domestic and international levels

    Highly cited publication performance in the ophthalmology category in the Web of Science database: a bibliometric analysis

    Get PDF
    AIM: To determine and evaluate the features of highly cited articles (HCAs) in the ophthalmology category in the Science Citation Index Expanded (SCI-EXPANDED) from 1991 to 2020. METHODS: The Web of Science Core Collection documents with at least 100 citations from their publication year until December 31, 2020, were evaluated as highly cited. The examined features were the distribution of yearly output and its average number of per publication, HCAs, authors, institutions, journals, and nations. The publication performance of nations and organizations was assessed using six publication indicators. The Y-index was employed to compare the research outputs of various authors. RESULTS: Publications that had cited the most references were highly published in high-impact factor journals. The United States of America came out on top across all six publication indicators, and it was home to eight of the top 10 most productive institutions. The articles written by Breivik et al (2006) and Farrar et al (2001) were highly cited and had a significant impact in 2020. The authors had a higher number of highly cited articles published as corresponding authors than as first authors. CONCLUSION: The findings of the present study highlight the current scope of global research in ophthalmology. The findings can help policy-makers and advisory groups of research centers to develop future policies. In addition, the findings can guide researchers in this field

    Bibliometric Analysis of the Journal of Hospital Librarianship

    Get PDF
    The Journal of Hospital Librarianship is the most influential journal in the field of hospital libraries. This study, using bibliometric and visualization methods, provides a comprehensive analysis of the Journal of Hospital Librarianship. The results of the bibliometrics indicated that the citation received by papers was ascending, and the average citation for each document was 1.06. Helen-Ann Brown Epstein with 26 documents, is the most prolific author. About 86 percent of the documents were published by authors from the United States. The LSU Health Sciences Center, with 14 documents, is the most active institution. The article entitled "Gray literature: Its emerging importance" is considered the most highly cited article in the journal receiving 79 citations. Visualizing and clustering the important terms in the title and the keywords of the articles using the VOSviewer software suggests that these terms form seven clusters. Hospital library, information need, and hospital librarian were the most important terms in the title of the articles, and hospital libraries, libraries and internet were the most important keywords. In addition, visualizing the abstract of the articles showed that "hospital libraries", "survey research", "health information," and "evidence-based medicine" are the main four clusters of articles. The publishing trends in this journal have been accompanied by ups and downs and the United States has been one of the main countries contributed to this journal. The results of this study can be a road map for researchers and editors of this journal

    Light cone effect on the reionization 21-cm power spectrum

    Get PDF
    Observations of redshifted 21-cm radiation from neutral hydrogen during the epoch of reionization (EoR) are considered to constitute the most promising tool to probe that epoch. One of the major goals of the first generation of low frequency radio telescopes is to measure the 3D 21-cm power spectrum. However, the 21-cm signal could evolve substantially along the line of sight (LOS) direction of an observed 3D volume, since the received signal from different planes transverse to the LOS originated from different look-back times and could therefore be statistically different. Using numerical simulations we investigate this so-called light cone effect on the spherically averaged 3D 21-cm power spectrum. For this version of the power spectrum, we find that the effect mostly `averages out' and observe a smaller change in the power spectrum compared to the amount of evolution in the mean 21-cm signal and its rms variations along the LOS direction. Nevertheless, changes up to 50% at large scales are possible. In general the power is enhanced/suppressed at large/small scales when the effect is included. The cross-over mode below/above which the power is enhanced/suppressed moves toward larger scales as reionization proceeds. When considering the 3D power spectrum we find it to be anisotropic at the late stages of reionization and on large scales. The effect is dominated by the evolution of the ionized fraction of hydrogen during reionization and including peculiar velocities hardly changes these conclusions. We present simple analytical models which explain qualitatively all the features we see in the simulations.Comment: 15 pages, 15 figures, 4 tables, moderate revision, added results on anisotropies in the power spectra arising from the light cone effect and a discussion on the foreground subtraction effect. MNRAS (in press

    Oncostatin m is produced in adipose tissue and is regulated in conditions of obesity and type 2 diabetes

    Get PDF
    CONTEXT: Adipose tissue is a highly active endocrine organ that secretes many factors that affect other tissues and whole-body metabolism. Adipocytes are responsive to several glycoprotein 130 (gp130) cytokines, some of which have been targeted as potential antiobesity therapeutics. OBJECTIVE: Oncostatin M (OSM) is a gp130 family member known to inhibit adipocyte differentiation in vitro, but its effects on other adipocyte properties are not characterized. The expression of OSM in white adipose tissue (WAT) has not been evaluated in the context of obesity. Thus, our objective was to examine the expression of adipose tissue OSM in obese animals and humans. DESIGN: OSM expression was examined in adipose tissues from mice with diet-induced and genetic obesity and in obese humans as well as in fractionated adipose tissue from mice. Murine adipocytes were used to examine OSM receptor expression and the effects of OSM on adipocytes, including the secretion of factors such as plasminogen activator inhibitor 1 and IL-6, which are implicated in metabolic diseases. RESULTS: OSM expression is increased in rodent and human obesity/type 2 diabetes mellitus. In humans, OSM levels correlate with body weight and insulin and are inversely correlated with glucose disposal rate as measured by hyperinsulinemic-euglycemic clamp. OSM is not produced from the adipocytes in WAT but derives from cells in the stromovascular fraction, including F4/80(+) macrophages. The specific receptor of OSM, OSM receptor-β, is expressed in adipocytes and adipose tissue and increased in both rodent models of obesity examined. OSM acts on adipocytes to induce the expression and secretion of plasminogen activator inhibitor 1 and IL-6. CONCLUSIONS: These data indicate that WAT macrophages are a source of OSM and that OSM levels are significantly induced in murine and human obesity/type 2 diabetes mellitus. These studies suggest that OSM produced from immune cells in WAT acts in a paracrine manner on adipocytes to promote a proinflammatory phenotype in adipose tissue
    • …
    corecore