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Ambiente & água in the context of impact indicators of scientific Brazilian journals  [cached]
Nelson Wellausen Dias,Getulio Teixeira Batista
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2010,
Abstract: For quite some time the international scientific community has criticized the use of impact indicators based only on few journals registered at commercially subscribed databases such as the ISI Web of Knowledge (producer of Journal Citation Reports - JCR). Several studies focusing on different subject areas have demonstrated the advantages and disadvantages of assessing the impact of an article, or journal, from commercial and open-access databases, such as Google Scholar (Segen, 1997; Gisvold, 1999; DuBois and Reeb, 2000; Whitehouse, 2002; Baumgartner and Pieters, 2003; Cameron, 2005; Ha et al., 2006; Mingers and Harzing, 2007). Most of the studies found that there was a strong correlation between impact indicators measured by a commercial databases (restricted) and open-access in certain field areas (Science, Health, Biological and Applied Social), while areas usually with lesser coverage by commercial databases (Environment, Humanities, among others) end up having lower impact indicator values based on these commercial databases. Moreover, the number of publications in these last areas has shown a significant expansion recently and, therefore, they end up receiving greater impact scores when evaluated by open-access databases. In these cases the correlation between impact indicators calculated by restricted versus open-access database is significantly lower. In this exercise, developed to obtain impact values of various Brazilian scientific journals in international open-access databases, not only it could be demonstrated the role that the journal Ambiente & água withholds in the national scientific community (and even international if considered the information published in previous editorials), but also witnesses the degree of efficiency, transparency, and simplicity of the indicators used. The Editorial Board of the journal Ambiente & água stands in favor of using indicators that are transparent, simple, and free of charge in the process of assessing the impact of published articles and scientific Brazilian journals.
Journals in surgery and gastroenterology: indexing in databases and bibliometric indicators
Castro, Regina C. Figueiredo;
Acta Cirurgica Brasileira , 2006, DOI: 10.1590/S0102-86502006000300002
Abstract: introduction: publishing research results as journal articles is the most common format used by researchers for dissemination of advancements in science. to select where to publish, authors must know how to identify the most recognized journals in each field, adopting quality criteria. purpose: to discuss journal selection criteria and bibliometric indicators for evaluation of scientific production and to analyze the status of indexing of brazilian and international journals in health science databases, mainly for journals in surgery and gastroenterology fields. results: the totals of journals indexed in health science databases are presented, highlighting the relative participation of journals in surgery and gastroenterology in each database. conclusion: the decision to publish in a national or international journal should be based on bibliometric indicators and status of indexing in databases, but the objectives of the research must be the main point considered by authors.
Journals in surgery and gastroenterology: indexing in databases and bibliometric indicators  [cached]
Castro Regina C. Figueiredo
Acta Cirurgica Brasileira , 2006,
Abstract: INTRODUCTION: Publishing research results as journal articles is the most common format used by researchers for dissemination of advancements in science. To select where to publish, authors must know how to identify the most recognized journals in each field, adopting quality criteria. PURPOSE: To discuss journal selection criteria and bibliometric indicators for evaluation of scientific production and to analyze the status of indexing of Brazilian and international journals in health science databases, mainly for journals in surgery and gastroenterology fields. RESULTS: The totals of journals indexed in health science databases are presented, highlighting the relative participation of journals in surgery and gastroenterology in each database. CONCLUSION: The decision to publish in a national or international journal should be based on bibliometric indicators and status of indexing in databases, but the objectives of the research must be the main point considered by authors.
Anthropometric indicators of abdominal obesity: review of the papers indexed on SciELO electronic library
Claudio Barnabé dos Santos Cavalcanti,Sineide Cristina Barbosa do Egito Carvalho,Mauro Virgilio Gomes de Barros
Revista Brasileira de Cineantropometria e Desempenho Humano , 2009,
Abstract: A systematic review of original articles published between 1993 and 2007 and indexed in SciELO (Scientific Electronic Library Online) was carried out to identify the anthropometric indicators used to assess abdominal obesity in different target subgroups, and to provide an overview of available evidence regarding the relationship between these anthropometric indicators and obesity-associated comorbidities. The articles were analyzed and the following data were collected:year of publication, sample size and age, anthropometric measure used to detect abdominal obesity, and main results of the study. The review comprised 47 articles which met all inclusion criteria, most of them published over the last 5 years. Waist-hip ratio and waist circumference were used as indicators of abdominal obesity in 34 and 11 of the articles reviewed, respectively. With respect to age range, the samples were heterogeneous in most of the studies (n=27) and ten included adolescents. Four studies were conducted on elderly subjects and three included children, but none exclusively involved adolescents as the target population. The sample size was larger than 500 in 26 studies. Despite disagreement in terms of the degree of correlation, the studies generally showed that the anthropometric indicators of abdominal obesity were correlated with hypertension, diabetes, dyslipidemias, and coronary heart risk. The results of this review suggest that abdominal obesity is associated with metabolic diseases. However, there is a lack of studies involving the adolescent population, suggesting the need for further research in this area.
A Proposal to Classify Latinamerican Scientific Journals using Citation Indicators: Case Study in Colombia  [PDF]
Mauricio Romero-Torres,Maria Alejandra Tejada,Alberto Acosta
Computer Science , 2011,
Abstract: Colombian scientific journals are poorly represented in international digital libraries; however, through Google Scholar (GS) it is possible to determine their use by the community. Between the years of 2003 and 2007 a classification of 185 Colombian journals indexed in the Colombian National Bibliographical Index (IBNP) was performed using the information provided by GS, basing categorization on size indicators, indexation and citation. The indicators were analyzed by grouping the journals in two general areas: sciences and social sciences. In each area, the indicators provided by the digital libraries Scopus, Redalyc and Scielo were compared. Additionally, the indicators provided by IBNP journals categories (A1, A2, B and C) were also compared. The sciences and social sciences had a similar pattern in their indicators. The existence of positive correlations was established between some indicators and they predicted that the number of citations per journal in GS and the h index depends on its visibility in GS and Scopus. We put forward that the current IBNP categories (A1, A2, B or C) faintly reflect the use of journals by the community and we propose a classification based on the h index as an infometric indicator, which reflects not only its visibility in Google Scholar, but also its inclusion in certain international digital libraries, particularly Scopus. Our results may be applied to the creation of public policies regarding science and technology in Colombia and in developing countries.
Quality indicators for scientific journals based on experts opinion  [PDF]
Elea Gimenez-Toledo,Jorge Manana-Rodriguez,Emilio Delgado-Lopez-Cozar
Computer Science , 2013,
Abstract: This paper presents the results and further development of a survey sent to 11,799 Spanish faculty members and researchers from various fields of the social sciences and the humanities, obtaining a total of 45.6% (5,368 responses) usable answers. Respondents were asked (a) to indicate the three most important journals in their field and (b) to rate them on a 0-10 scale according to their quality. The information obtained has been synthesized in two indicators which reflect the perceived quality of journals. Once the values were obtained, the journals were categorized according to each indicator and the ordinal positions were compared. Different profiles of journals are analyzed in connection with experts opinion, such as regional orientation, and the consensus among researchers is studied. Finally, the possibilities of extending the research and indicators to sets of international journals are explored.
Indicators of the Interdisciplinarity of Journals: Diversity, Centrality, and Citations  [PDF]
Loet Leydesdorff,Ismael Rafols
Computer Science , 2010,
Abstract: A citation-based indicator for interdisciplinarity has been missing hitherto among the set of available journal indicators. In this study, we investigate network indicators (betweenness centrality), journal indicators (Shannon entropy, the Gini coefficient), and more recently proposed Rao-Stirling measures for "interdisciplinarity." The latter index combines the statistics of both citation distributions of journals (vector-based) and distances in citation networks among journals (matrix-based). The effects of various normalizations are specified and measured using the matrix of 8,207 journals contained in the Journal Citation Reports of the (Social) Science Citation Index 2008. Betweenness centrality in symmetrical (1-mode) cosine-normalized networks provides an indicator outperforming betweenness in the asymmetrical (2-mode) citation network. Among the vector-based indicators, Shannon entropy performs better than the Gini coefficient, but is sensitive to size. Science and Nature, for example, are indicated at the top of the list. The new diversity measure provides reasonable results when (1 - cosine) is assumed as a measure for the distance, but results using Euclidean distances were difficult to interpret.
A quantitative and qualitative evaluation of reports of clinical trials published in six Brazilian dental journals indexed in the Scientific Electronic Library Online (SciELO)
Souza, Raphael Freitas de;Chaves, Carolina de Andrade Lima;Nasser, Mona;Fedorowicz, Zbys;
Journal of Applied Oral Science , 2010, DOI: 10.1590/S1678-77572010000200002
Abstract: introduction: open access publishing is becoming increasingly popular within the biomedical sciences. scielo, the scientific electronic library online, is a digital library covering a selected collection of brazilian scientific journals many of which provide open access to full-text articles.this library includes a number of dental journals some of which may include reports of clinical trials in english, portuguese and/or spanish. thus, scielo could play an important role as a source of evidence for dental healthcare interventions especially if it yields a sizeable number of high quality reports. objective: the aim of this study was to identify reports of clinical trials by handsearching of dental journals that are accessible through scielo, and to assess the overall quality of these reports. material and methods: electronic versions of six brazilian dental journals indexed in scielo were handsearched at www.scielo.br in september 2008. reports of clinical trials were identified and classified as controlled clinical trials (ccts - prospective, experimental studies comparing 2 or more healthcare interventions in human beings) or randomized controlled trials (rcts - a random allocation method is clearly reported), according to cochrane eligibility criteria. criteria to assess methodological quality included: method of randomization, concealment of treatment allocation, blinded outcome assessment, handling of withdrawals and losses and whether an intention-to-treat analysis had been carried out. results: the search retrieved 33 ccts and 43 rcts. a majority of the reports provided no description of either the method of randomization (75.3%) or concealment of the allocation sequence (84.2%). participants and outcome assessors were reported as blinded in only 31.2% of the reports. withdrawals and losses were only clearly described in 6.5% of the reports and none mentioned an intention-to-treat analysis or any similar procedure. conclusions: the results of this study indic
Case reports and case series in Peru: status of a type of underestimated publication. Analysis of the peruvian medical journals indexed in SciELO-Peru, 1997-2008  [PDF]
Franco Romaní,Paolo Wong
Revista Peruana de Epidemiologia , 2009,
Abstract: Background: Case reports and series reports play a role in the progress of medical science, and also have a long history in medicine. Objective: To describe the current status and the evolution of the publication of case reports and series reports in Peruvian medical journals. Methods: Bibliometric descriptive study of Peruvian medical journals indexed in SciELO-Perú between 1997 and 2008. A database was constructed including the following variables: type of publication, speciality of the report, conditions under which the report was published, principal author's affiliation, title journal, and year of publication. The analysis was descriptive. Results: 526 communications were published within the time period, of which 452 (86%) were case reports and 74 (14%) were case series. The most commonly reviewed specialties were dermatology with 159 cases (30.2%), gastroenterology with 116 cases (22.1%), and infectious diseases with 83 cases (15.8%). The most common conditions that made the clinical case publishable were rare, infrequent or poorly described disease (46%) and unusual presentation or complication of the disease (30.8%). The Revista de Gastroenterología del Perú, Dermatología Peruana and Revista Médica Herediana were those with more cases published, 24.7%, 19.2% and 15.8% respectively. Conclusions: The publication of case reports and series in Peru has increased over the years, reflecting that this type of publication continues to play an important role in research and medical education.
Effects of Print Publication Lag in Dual Format Journals on Scientometric Indicators  [PDF]
Petr Heneberg
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0059877
Abstract: Background Publication lag between manuscript submission and its final publication is considered as an important factor affecting the decision to submit, the timeliness of presented data, and the scientometric measures of the particular journal. Dual-format peer-reviewed journals (publishing both print and online editions of their content) adopted a broadly accepted strategy to shorten the publication lag: to publish the accepted manuscripts online ahead of their print editions, which may follow days, but also years later. Effects of this widespread habit on the immediacy index (average number of times an article is cited in the year it is published) calculation were never analyzed. Methodology/Principal Findings Scopus database (which contains nearly up-to-date documents in press, but does not reveal citations by these documents until they are finalized) was searched for the journals with the highest total counts of articles in press, or highest counts of articles in press appearing online in 2010–2011. Number of citations received by the articles in press available online was found to be nearly equal to citations received within the year when the document was assigned to a journal issue. Thus, online publication of in press articles affects severely the calculation of immediacy index of their source titles, and disadvantages online-only and print-only journals when evaluating them according to the immediacy index and probably also according to the impact factor and similar measures. Conclusions/Significance Caution should be taken when evaluating dual-format journals supporting long publication lag. Further research should answer the question, on whether the immediacy index should be replaced by an indicator based on the date of first publication (online or in print, whichever comes first) to eliminate the problems analyzed in this report. Information value of immediacy index is further questioned by very high ratio of authors’ self-citations among the citation window used for its calculation.
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