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Uma abordagem à linguagem de indexação dos artigos científicos depositados no repositório científico da Universidade de Coimbra; An approach to indexing language of journal articles deposited in the University of Coimbra scientific repository

Miguéis, Ana; Neves, Bruno
Fonte: Universidade Federal da Bahia Publicador: Universidade Federal da Bahia
Tipo: Artigo de Revista Científica
POR
Relevância na Pesquisa
35.63%
Este estudo tem como objetivo geral analisar as palavras-chave usadas pelos autores da Universidade de Coimbra nos artigos da área das Ciências da Saúde, comparando-as com os termos da lista de encabeçamentos de matérias Medical Subject Headings (MeSH), a que recorre a National Library of Medicine, na análise de conteúdo desses artigos. O corpus é constituído por 207 documentos, depositados no repositório científico da Universidade de Coimbra – Estudo Geral – e que foram publicados em revistas internacionais e indexados na base de dados MEDLINE. Apresenta como objetivos específicos: (i) identificar e aferir o número de palavras-chave colocadas na versão depositada no Estudo Geral e na versão publicada pela editora; e o número de descritores atribuídos pela MEDLINE; (ii) verificar as palavras-chave, usadas pelos autores, que coincidem ou se relacionam com os termos do MeSH. Os resultados obtidos indicam que o número de palavraschave registadas no Estudo Geral inclui apenas cerca de metade de todas as palavras-chave registadas nas versões publicadas pelas editoras e é significativamente inferior relativamente aos termos empregues pela MEDLINE. Das palavras-chave identificadas, cerca de dois terços coincidem, ou estabelecem um tipo de relação associativa com os descritores aplicados do MeSH.; In this article...

Artigos científicos como recurso didático no ensino superior de Química; Research articles as a didatic tool in undergraduate chemistry teaching

MASSI, Luciana; SANTOS, Gelson Ribeiro dos; FERREIRA, Jerino Queiroz; QUEIROZ, Salete Linhares
Fonte: Sociedade Brasileira de Química Publicador: Sociedade Brasileira de Química
Tipo: Artigo de Revista Científica
POR
Relevância na Pesquisa
35.63%
Chemistry teachers increasingly use research articles in their undergraduate courses. This trend arises from current pedagogical emphasis on active learning and scientific process. In this paper, we describe some educational experiences on the use of research articles in chemistry higher education. Additionally, we present our own conclusions on the use of such methodology applied to a scientific communication course offered to undergraduate chemistry students at the University of São Paulo, Brazil.; FAPESP; CNPq

Uma análise jurisprudencial e doutrinária dos artigos penais da Lei 8.666/93 frente os municípios; An analysis of articles jurisprudence and doctrinal 8.666/93 face criminal law municipalities

Amorim, Pedro Henrique Müller
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Trabalho de Conclusão de Curso Formato: application/pdf
POR
Relevância na Pesquisa
35.63%
As licitações são muito utilizadas nos dias de hoje em toda a sociedade, para a utilização destas ferramentas existe um procedimento cuidadoso em todas as unidades dos Poderes Judiciário, Executivo e Legislativo, com destaque para os Municípios. Mas as licitações antes de consistência em lei própria sofreram na dúvida de quem seria o seu ente competente para regulá-la, a doutrina resolveu esta questão. A licitação apresenta em seu procedimento vários elementos para resguardar os interesses do bem comum e os princípios inerentes ao procedimento licitatório, exigindo que os atos dos agentes públicos e agentes privados sejam amparados a Lei. Neste intuito estudou os artigos de crimes da lei 8.666/96 das licitações, suas peculiaridades, aplicação frente aos envolvidos e eficiência na busca dos resultados, utilizando-se da lei, doutrina e principalmente da consulta documental em jurisprudências. Por fim conclui-se que varias são as tentativas de ilícitos dentro dos procedimentos licitatórios nos Municípios e que os artigos penais previstos na lei necessitam de revisão em seu texto e nas suas penas, para que tenham maior abrangência e eficiência na defesa do bem comum nos Municípios.; Bids are widely used today throughout society...

Articles with short titles describing the results are cited more often

Paiva,Carlos Eduardo; Lima,João Paulo da Silveira Nogueira; Paiva,Bianca Sakamoto Ribeiro
Fonte: Faculdade de Medicina / USP Publicador: Faculdade de Medicina / USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2012 EN
Relevância na Pesquisa
35.69%
OBJECTIVE: The aim of this study was to evaluate some features of article titles from open access journals and to assess the possible impact of these titles on predicting the number of article views and citations. METHODS: Research articles (n = 423, published in October 2008) from all Public Library of Science (PLoS) journals and from 12 Biomed Central (BMC) journals were evaluated. Publication metrics (views and citations) were analyzed in December 2011. The titles were classified according to their contents, namely methods-describing titles and results-describing titles. The number of title characters, title typology, the use of a question mark, reference to a specific geographical region, and the use of a colon or a hyphen separating different ideas within a sentence were analyzed to identify predictors of views and citations. A logistic regression model was used to identify independent title characteristics that could predict citation rates. RESULTS: Short-titled articles had higher viewing and citation rates than those with longer titles. Titles containing a question mark, containing a reference to a specific geographical region, and that used a colon or a hyphen were associated with a lower number of citations. Articles with results-describing titles were cited more often than those with methods-describing titles. After multivariate analysis...

Cost analysis of a project to digitize classic articles in neurosurgery*

Bauer, Kathleen
Fonte: Medical Library Association Publicador: Medical Library Association
Tipo: Artigo de Revista Científica
Publicado em /04/2002 EN
Relevância na Pesquisa
35.72%
In summer 2000, the Cushing/Whitney Medical Library at Yale University began a demonstration project to digitize classic articles in neurosurgery from the late 1800s and early 1900s. The objective of the first phase of the project was to measure the time and costs involved in digitization, and those results are reported here. In the second phase, metadata will be added to the digitized articles, and the project will be publicized. Thirteen articles were scanned using optical character recognition (OCR) software, and the resulting text files were carefully proofread. Time for photocopying, scanning, and proofreading were recorded. This project achieved an average cost per item (total pages plus images) of $4.12, a figure at the high end of average costs found in other studies. This project experienced high costs for two reasons. First, the articles contained many images, which required extra processing. Second, the older fonts and the poor condition of many of these articles complicated the OCR process. The average article cost $84.46 to digitize. Although costs were high, the selection of historically important articles maximized the benefit gained from the investment in digitization.

Medical Articles in Eighteenth Century American Magazines

Coggins, Clemency Chase
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /07/1965 EN
Relevância na Pesquisa
35.63%
Formal medical publication began in the United States with The Medical Repository in 1797. Between 1741, the date of the first American magazine, and 1797 medical articles were included in general magazines. This study deals with ten representative magazines and reviews their general content. The varying content of the medical articles is analyzed into broad categories, and several important physicians, contributors to the magazines, are discussed. The Medical Repository is treated as a culmination of eighteenth century medical publication.

Basic Psychiatric Literature: II. Articles and Article Sources*†

Woods, Joan B.; Pieper, Sam; Frazier, Shervert H.
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /10/1968 EN
Relevância na Pesquisa
35.63%
Widely varying reading lists for general psychiatry residents were obtained from 140 three-year approved training programs. The material recommended for reading was listed on index cards, and the number of programs recommending each item was posted on the cards. Approximately 4,000 articles, 2,800 books, and 200 serials were recommended. A statistical evaluation of the book list appeared in a previous paper (3).* Part II is a similar evaluation of the article list and the limited editions and serials in which the articles appear.

Scientific quality of original research articles on environmental tobacco smoke

Barnes, D. E.; Bero, L. A.
Fonte: BMJ Group Publicador: BMJ Group
Tipo: Artigo de Revista Científica
Publicado em /03/1997 EN
Relevância na Pesquisa
35.74%
OBJECTIVE: To evaluate the scientific quality of original research articles on the health effects of environmental tobacco smoke; to determine whether poor article quality is associated with publication in non-peer-reviewed symposium proceedings or with other article characteristics. DESIGN: Cross sectional study of original research articles on the health effects of environmental tobacco smoke published in peer reviewed journals and non-peer-reviewed symposium proceedings from 1980 to 1994. Article quality was assessed by two independent reviewers who used a valid and reliable instrument, were unaware of study hypotheses, were blinded to identifying characteristics of articles, and had no disclosed conflicts of interest. PARTICIPANTS: All symposium articles (n = 68) and a random sample of peer reviewed journal articles (n = 68) that satisfied inclusion/exclusion criteria. MAIN OUTCOME MEASURE: Mean quality scores, which could range from 0 (lowest quality) to 1 (highest quality). RESULTS: Using multivariate regression analysis, symposium articles were of poorer scientific quality than peer reviewed journal articles when controlling simultaneously for the effects of study design, article conclusion, article topic, and source of funding acknowledged (P = 0.027). Article quality was not associated with either source of funding acknowledged or article conclusion in multivariate analyses. CONCLUSIONS: In published reports on environmental tobacco smoke...

Estimating the Horizon of Articles to Decide When to Stop Searching in Systematic Reviews: An Example Using a Systematic Review of RCTs Evaluating Osteoporosis Clinical Decision Support Tools

Kastner, Monika; Straus, Sharon; Goldsmith, Charlie H.
Fonte: American Medical Informatics Association Publicador: American Medical Informatics Association
Tipo: Artigo de Revista Científica
Publicado em //2007; 2007 EN
Relevância na Pesquisa
35.69%
Researchers conducting systematic reviews need to search multiple bibliographic databases such as MEDLINE and EMBASE. However, researchers have no rational search stopping rule when looking for potentially-relevant articles. We empirically tested a stopping rule based on the concept of capture-mark-recapture (CMR), which was first pioneered in ecology. The principles of CMR can be adapted to systematic reviews and meta-analyses to estimate the Horizon of articles in the literature with its confidence interval. We retrospectively tested this Horizon Estimation using a systematic review of randomized controlled trials (RCTs) that evaluated clinical decision support tools for osteoporosis disease management. The Horizon Estimation was calculated based on 4 bibliographic databases that were included as the main data sources for the review in the following order: MEDLINE, EMBASE, CINAHL, and EBM Reviews. The systematic review captured 68% of known articles from the 4 data sources, which represented 592 articles that were estimated as missing from the Horizon.

Author Keywords in Biomedical Journal Articles

Névéol, Aurélie; Doğan, Rezarta Islamaj; Lu, Zhiyong
Fonte: American Medical Informatics Association Publicador: American Medical Informatics Association
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
35.66%
As an information retrieval system, PubMed® aims at providing efficient access to documents cited in MEDLINE®. For this purpose, it relies on matching representations of documents, as provided by authors and indexers to user queries. In this paper, we describe the growth of author keywords in biomedical journal articles and present a comparative study of author keywords and MeSH® indexing terms assigned by MEDLINE indexers to PubMed Central Open Access articles. A similarity metric is used to assess automatically the relatedness between pairs of author keywords and indexing terms. A set of 300 pairs is manually reviewed to evaluate the metric and characterize the relationships between author keywords and indexing terms. Results show that author keywords are increasingly available in biomedical articles and that over 60% of author keywords can be linked to a closely related indexing term. Finally, we discuss the potential impact of this work on indexing and terminology development.

Using binary classification to prioritize and curate articles for the Comparative Toxicogenomics Database

Vishnyakova, Dina; Pasche, Emilie; Ruch, Patrick
Fonte: Oxford University Press Publicador: Oxford University Press
Tipo: Artigo de Revista Científica
Publicado em 05/12/2012 EN
Relevância na Pesquisa
35.63%
We report on the original integration of an automatic text categorization pipeline, so-called ToxiCat (Toxicogenomic Categorizer), that we developed to perform biomedical documents classification and prioritization in order to speed up the curation of the Comparative Toxicogenomics Database (CTD). The task can be basically described as a binary classification task, where a scoring function is used to rank a selected set of articles. Then components of a question-answering system are used to extract CTD-specific annotations from the ranked list of articles. The ranking function is generated using a Support Vector Machine, which combines three main modules: an information retrieval engine for MEDLINE (EAGLi), a gene normalization service (NormaGene) developed for a previous BioCreative campaign and finally, a set of answering components and entity recognizer for diseases and chemicals. The main components of the pipeline are publicly available both as web application and web services. The specific integration performed for the BioCreative competition is available via a web user interface at http://pingu.unige.ch:8080/Toxicat.

Window Classification of Brain CT Images in Biomedical Articles

Xue, Zhiyun; Antani, Sameer; Long, L. Rodney; Demner-Fushman, Dina; Thoma, George R.
Fonte: American Medical Informatics Association Publicador: American Medical Informatics Association
Tipo: Artigo de Revista Científica
Publicado em 03/11/2012 EN
Relevância na Pesquisa
35.66%
Effective capability to search biomedical articles based on visual properties of article images may significantly augment information retrieval in the future. In this paper, we present a new method to classify the window setting types of brain CT images. Windowing is a technique frequently used in the evaluation of CT scans, and is used to enhance contrast for the particular tissue or abnormality type being evaluated. In particular, it provides radiologists with an enhanced view of certain types of cranial abnormalities, such as the skull lesions and bone dysplasia which are usually examined using the “ bone window” setting and illustrated in biomedical articles using “bone window images”. Due to the inherent large variations of images among articles, it is important that the proposed method is robust. Our algorithm attained 90% accuracy in classifying images as bone window or non-bone window in a 210 image data set.

Predicting clicks of PubMed articles

Mao, Yuqing; Lu, Zhiyong
Fonte: American Medical Informatics Association Publicador: American Medical Informatics Association
Tipo: Artigo de Revista Científica
Publicado em 16/11/2013 EN
Relevância na Pesquisa
35.63%
Predicting the popularity or access usage of an article has the potential to improve the quality of PubMed searches. We can model the click trend of each article as its access changes over time by mining the PubMed query logs, which contain the previous access history for all articles. In this article, we examine the access patterns produced by PubMed users in two years (July 2009 to July 2011). We explore the time series of accesses for each article in the query logs, model the trends with regression approaches, and subsequently use the models for prediction. We show that the click trends of PubMed articles are best fitted with a log-normal regression model. This model allows the number of accesses an article receives and the time since it first becomes available in PubMed to be related via quadratic and logistic functions, with the model parameters to be estimated via maximum likelihood. Our experiments predicting the number of accesses for an article based on its past usage demonstrate that the mean absolute error and mean absolute percentage error of our model are 4.0% and 8.1% lower than the power-law regression model, respectively. The log-normal distribution is also shown to perform significantly better than a previous prediction method based on a human memory theory in cognitive science. This work warrants further investigation on the utility of such a log-normal regression approach towards improving information access in PubMed.

Normal tissue studies in radiation oncology: A systematic review of highly cited articles and citation patterns

NIEDER, CARSTEN; ANDRATSCHKE, NICOLAUS H.; GROSU, ANCA L.
Fonte: D.A. Spandidos Publicador: D.A. Spandidos
Tipo: Artigo de Revista Científica
EN
Relevância na Pesquisa
35.66%
Radiation therapy is one of the cornerstones of modern multidisciplinary cancer treatment. Normal tissue tolerance is critical as radiation-induced side effects may compromise organ function and quality of life. The importance of normal tissue research is reflected by the large number of scientific articles, which have been published between 2006 and 2010. The present study identified important areas of research as well as seminal publications. The article citation rate is among the potential indicators of scientific impact. Highly cited articles, arbitrarily defined as those with ≥15 citations, were identified via a systematic search of the citation database, Scopus. Up to 608 articles per year were published between 2006 and 2010, however, <10% of publications in each year accumulated ≥15 citations. This figure is notably low, when compared with other oncology studies. A large variety of preclinical and clinical topics, including toxicity prediction, the dose-volume relationship and radioprotectors, accumulated ≥15 citations. However, clinical prevention or mitigation studies were underrepresented. The following conclusion may be drawn from the present study; despite the improved technology that has resulted in superior dose distribution...

Phénomène de biohype dans des articles scientifiques rapportant des résultats issus de recherches cliniques en nutrigénétique/nutrigénomique : caractérisation et perception des chercheurs

Stenne, Raphaëlle
Fonte: Université de Montréal Publicador: Université de Montréal
Tipo: Thèse ou Mémoire numérique / Electronic Thesis or Dissertation
FR
Relevância na Pesquisa
35.74%
Le développement de la nutrigénétique/nutrigénomique (NGx) a suscité de nombreuses attentes puisque les retombées qui lui sont associées s’avèrent potentiellement bénéfiques autant pour les individus en santé que pour les individus malades. De grandes attentes avaient également été associées au Projet de décryptage du Génome Humain (PGH). Aujourd’hui, seules quelques attentes de celles envisagées se sont concrétisées. Le PGH a donc évolué dans un contexte marqué par du biohype, soit la promotion d’attentes exagérées, voir irréalistes. Étant donné l’importance des attentes associées avec le développement de la NGx et des limites méthodologiques auxquelles fait encore face la recherche clinique conduite dans ce domaine, l’objectif principal de cette thèse est de déterminer si les publications scientifiques rapportant des résultats de recherches cliniques effectuées en NGx contribuent à l’émergence d’un phénomène de biohype. Plus spécifiquement, il s’agira également de documenter la perception des chercheurs oeuvrant dans le domaine de la NGx du phénomène de biohype, d’identifier certains facteurs qui pourraient expliquer son émergence dans la littérature scientifique propre à ce domaine et de proposer des pistes d’actions pour limiter les risques associés à ce phénomène. Nous avons tout d’abord procédé à une analyse documentaire d’articles scientifiques rapportant des résultats issus de recherches cliniques en NGx. Celle-ci nous a révélé que plusieurs bénéfices étaient promus dans cette littérature alors même que les limites méthodologiques n’étaient pas d’emblée présentées et discutées. Cette observation nous portait à croire que ces bénéfices étant potentiellement prématurés. Nous avons ensuite voulu valider notre constat auprès des chercheurs œuvrant principalement dans le domaine de la NGx. Cette enquête nous a permis de constater que les chercheurs étaient généralement en accord avec les bénéfices que nous avons recensés dans les articles scientifiques. Toutefois...

Rhetorical Structure Analysis of the Indonesian Research Articles

Safnil
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Thesis (PhD); Doctor of Philosophy (PhD)
EN
Relevância na Pesquisa
35.63%
This thesis discusses rhetorical features of Indonesian research articles (RAs) in three disciplinary areas: Economics, Education and Psychology. These were written by Indonesian speakers and published mainly in university-based scientific journals. The main focus of this thesis is on the examination of the patterns of communicative purposes or ‘Moves’ and their subsequent elements or ‘Steps’ of the introduction sections of these articles. The analyses include the examination of communicative purposes and persuasive values of the texts, linguistic resources used to materialise the communicative purposes and persuasions, and the cultural factors (ie. norms, beliefs and values) and scientific practices and academic writing conventions underlying the specific rhetorical features. ¶ This study found that the macro rhetorical structure of the Indonesian RAs (ie. the Introduction, Methods, Results and Discussion or IMRD pattern) is relatively similar to that of the English RAs except that, unlike in English RAs, the conclusion and suggestion section in the Indonesian RAs have a separate section. However, the communicative purposes and persuasions in the introduction sections in the two groups of the RAs (English and Indonesian) are relatively different. Differences are also found in the way that rhetorical works use the linguistic resources to materialise the communicative purposes and persuasions in the introduction sections of the two groups of RAs. Some of the rhetorical differences are because of the differences in the research practices and scientific writing conventions in Indonesian and in English speaking countries...

High-ranked social science journal articles can be identified from early citation information

Stern, David I
Fonte: Public Library of Science Publicador: Public Library of Science
Tipo: Artigo de Revista Científica Formato: 11 pages
Relevância na Pesquisa
35.66%
Do citations accumulate too slowly in the social sciences to be used to assess the quality of recent articles? I investigate whether this is the case using citation data for all articles in economics and political science published in 2006 and indexed in the Web of Science. I find that citations in the first two years after publication explain more than half of the variation in cumulative citations received over a longer period. Journal impact factors improve the correlation between the predicted and actual future ranks of journal articles when using citation data from 2006 alone but the effect declines sharply thereafter. Finally, more than half of the papers in the top 20% in 2012 were already in the top 20% in the year of publication (2006).

Most of ESL students have trouble with the articles

Miller, J.
Fonte: Shannon Research Press Publicador: Shannon Research Press
Tipo: Artigo de Revista Científica
Publicado em //2005 EN
Relevância na Pesquisa
35.63%
The English article system presents many problems for non-native speakers of English, particularly when they do not have an equivalent structure in their first language. Different approaches to the teaching of articles have attempted to overcome this problem. By encouraging students to address the notion of countability and to identify specific uses of articles in English, the ESL teacher in this study was able to improve students’ understanding of this difficult area and guide them to a more accurate usage of the English article system.; Julia Miller

Cercar articles de revista

Universitat Autònoma de Barcelona. Servei de Biblioteques
Fonte: Universidade Autônoma de Barcelona Publicador: Universidade Autônoma de Barcelona
Formato: application/pdf
Publicado em //2015 CAT
Relevância na Pesquisa
35.66%
Guia amb indicacions per trobar articles de revista al catàleg de les Biblioteques de la UAB, ja sigui un article concret o articles sobre una matèria o d'un autor. També conté informació sobre els serveis disponibles per obtenir articles que no es trobin a la UAB

Articles with short titles describing the results are cited more often

Paiva, Carlos Eduardo; Lima, João Paulo da Silveira Nogueira; Paiva, Bianca Sakamoto Ribeiro
Fonte: Universidade de São Paulo. Faculdade de Medicina Publicador: Universidade de São Paulo. Faculdade de Medicina
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; ; Formato: application/pdf
Publicado em 01/01/2012 ENG
Relevância na Pesquisa
35.69%
OBJECTIVE: The aim of this study was to evaluate some features of article titles from open access journals and to assess the possible impact of these titles on predicting the number of article views and citations. METHODS: Research articles (n = 423, published in October 2008) from all Public Library of Science (PLoS) journals and from 12 Biomed Central (BMC) journals were evaluated. Publication metrics (views and citations) were analyzed in December 2011. The titles were classified according to their contents, namely methods-describing titles and results-describing titles. The number of title characters, title typology, the use of a question mark, reference to a specific geographical region, and the use of a colon or a hyphen separating different ideas within a sentence were analyzed to identify predictors of views and citations. A logistic regression model was used to identify independent title characteristics that could predict citation rates. RESULTS: Short-titled articles had higher viewing and citation rates than those with longer titles. Titles containing a question mark, containing a reference to a specific geographical region, and that used a colon or a hyphen were associated with a lower number of citations. Articles with results-describing titles were cited more often than those with methods-describing titles. After multivariate analysis...