Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 4.916
Filtrar
1.
PLoS One ; 15(4): e0230904, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32271797

RESUMO

With the widespread of multicore systems, automatic parallelization becomes more pronounced, particularly for legacy programs, where the source code is not generally available. An essential operation in any parallelization system is detecting data dependence among parallelization candidate instructions. Conducting dependence analysis at the binary-level is more challenging than that at the source-level due to the much lower semantics of the binary code. In this paper, we consider using the elaborate 'static' analysis of abstract interpretation, for the first time, at runtime for data dependence detection. Specifically, our system interprets instructions at a hot region, while at the same time, collect programs semantics for seen program points, thereby conducting abstract interpretation analysis dynamically. The analysis is guaranteed to be correct as long as execution does not exit the region prematurely. Moreover, successive hot region re-entries will resume previous analysis, albeit much faster in case no major change in the program semantics. Such approach provides for more rigorous analysis than other simple dynamic analysis which would typically miss parallelization opportunities. The proposed approach also does not require any hardware support, availability of the source code, as well as any code re-compilation. To study the performance and accuracy of our approach, we have extended the Padrone dynamic code modification framework, and conduct an initial study on a set of PolyBench kernels and selected programs from SPEC CPU. Experimental results show accurate dependence detection with low overhead.


Assuntos
Indexação e Redação de Resumos , Algoritmos , Análise de Dados , Semântica , Software , Fatores de Tempo
2.
PLoS One ; 15(4): e0231305, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32282846

RESUMO

Research article abstracts often convince readers that the article is worth reading. Therefore, they rely not only on the quality of arguments or novelty of findings to persuade readers but also linguistic markers in the form of metadiscourse to assert a position on an issue, increase readability of a text, engage readers, and avoid objection to the writer's interpretations, thereby enhancing the credibility of the text. Given that research article abstracts are often published online and their newsworthiness would affect whether they would be ultimately read, Altmetric.com, which emerged in 2010, can help quantify the popularity of research article abstracts by counting views on social media and other platforms such as news and policy documents. Yet a study on how metadiscoursal devices are used to persuade readers, and how they are correlated with Altmetric Attention Score (AAS) provided by Altmetric.com, merits attention. In our study, we examined 241 abstracts from 50 top journals in 12 disciplines with the highest AAS from 2014-2018 and performed a quantitative analysis of the interactive and interactional metadiscourse markers exhibited in the abstracts. Overall, we found a positive correlation between the use of metadiscourse and AAS. Furthermore, we noticed that each discipline used distinct metadiscourse markers in abstracts with high AAS, which contributed to its respective discipline-specific conventions. It has been previously shown that the use of an array of interactive and interactional metadiscourse renders the abstract more worthy of attention. Being knowledgeable of rhetorical choices in relation to metadiscoursal devices will enable writers to construct more persuasive abstracts by making informed judgments about the appropriate use of metadiscourse to draw the attention of readers in their respective disciplines.


Assuntos
Indexação e Redação de Resumos/métodos , Atenção , Comunicação Persuasiva , Publicações/estatística & dados numéricos , Mídias Sociais , Bibliometria , Humanos , Linguística
3.
PLoS One ; 15(4): e0231160, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32240246

RESUMO

Findings from psychological research are usually difficult to interpret for non-experts. Yet, non-experts resort to psychological findings to inform their decisions (e.g., whether to seek a psychotherapeutic treatment or not). Thus, the communication of psychological research to non-expert audiences has received increasing attention over the last years. Plain language summaries (PLS) are abstracts of peer-reviewed journal articles that aim to explain the rationale, methods, findings, and interpretation of a scientific study to non-expert audiences using non-technical language. Unlike media articles or other forms of accessible research summaries, PLS are usually written by the authors of the respective journal article, ensuring that research content is accurately reproduced. In this study, we compared the readability of PLS and corresponding scientific abstracts in a sample of 103 journal articles from two psychological peer-reviewed journals. To assess readability, we calculated four readability indices that quantify text characteristics related to reading comprehension (e.g., word difficulty, sentence length). Analyses of variance revealed that PLS were easier to read than scientific abstracts. This effect emerged in both included journals and across all readability indices. There was only little evidence that this effect differed in magnitude between the included journals. In sum, this study shows that PLS may be an effective instrument for communicating psychological research to non-expert audiences. We discuss future research avenues to increase the quality of PLS and strengthen their role in science communication.


Assuntos
Indexação e Redação de Resumos , Idioma , Psicologia , Leitura , Ciência , Armazenamento e Recuperação da Informação
5.
Int J Prosthodont ; 33(2): 224-228, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32069348

RESUMO

PURPOSE: To develop a new digital method for color-mixing analysis and to evaluate the validity of this method for quantifying masticatory performance. MATERIALS AND METHODS: Specimens of red-green (RG) chewing gum were prepared as a bicolor test food. A total of 300 specimens were masticated by 20 healthy volunteers for different numbers of mastication cycles (from 1 to 25). The boluses were flattened and scanned, and the digital images were analyzed using ImageJ software. Two parameters (spatial and value) of color mixing were measured, and multiple regression analysis was performed to estimate the number of mastication cycles. The estimated number of mastication cycles that the healthy reference cohort needed to achieve a certain degree of color mixing was proposed as the mastication index (MI). The validity of this method was assessed using Pearson correlation between the MI and concurrent measurements with ViewGum software (variance of hue) within a group of 10 healthy subjects and 10 complete denture wearers. RESULTS: Independent samples t test showed a significant difference in MI between healthy subjects and denture wearers (P < .001). A significant correlation was observed between the MI and ViewGum outcomes (r = -0.95, P < .001). CONCLUSION: The new proposed method proved to be valid and has the potential for evaluating masticatory performance in both research and clinical settings.


Assuntos
Goma de Mascar , Prótese Total , Indexação e Redação de Resumos , Cor , Humanos , Mastigação , Software
10.
PLoS One ; 15(1): e0227742, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31935267

RESUMO

BACKGROUND: Automated approaches to improve the efficiency of systematic reviews are greatly needed. When testing any of these approaches, the criterion standard of comparison (gold standard) is usually human reviewers. Yet, human reviewers make errors in inclusion and exclusion of references. OBJECTIVES: To determine citation false inclusion and false exclusion rates during abstract screening by pairs of independent reviewers. These rates can help in designing, testing and implementing automated approaches. METHODS: We identified all systematic reviews conducted between 2010 and 2017 by an evidence-based practice center in the United States. Eligible reviews had to follow standard systematic review procedures with dual independent screening of abstracts and full texts, in which citation inclusion by one reviewer prompted automatic inclusion through the next level of screening. Disagreements between reviewers during full text screening were reconciled via consensus or arbitration by a third reviewer. A false inclusion or exclusion was defined as a decision made by a single reviewer that was inconsistent with the final included list of studies. RESULTS: We analyzed a total of 139,467 citations that underwent 329,332 inclusion and exclusion decisions from 86 unique reviewers. The final systematic reviews included 5.48% of the potential references identified through bibliographic database search (95% confidence interval (CI): 2.38% to 8.58%). After abstract screening, the total error rate (false inclusion and false exclusion) was 10.76% (95% CI: 7.43% to 14.09%). CONCLUSIONS: This study suggests important false inclusion and exclusion rates by human reviewers. When deciding the validity of a future automated study selection algorithm, it is important to keep in mind that the gold standard is not perfect and that achieving error rates similar to humans may be adequate and can save resources and time.


Assuntos
Revisões Sistemáticas como Assunto , Indexação e Redação de Resumos , Algoritmos , Bases de Dados Bibliográficas , Processamento Eletrônico de Dados , Humanos , Projetos de Pesquisa
11.
PLoS One ; 15(1): e0227076, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31978081

RESUMO

Gene expression data have been archived as microarray and RNA-seq datasets in two public databases, Gene Expression Omnibus (GEO) and ArrayExpress (AE). In 2018, the DNA DataBank of Japan started a similar repository called the Genomic Expression Archive (GEA). These databases are useful resources for the functional interpretation of genes, but have been separately maintained and may lack RNA-seq data, while the original sequence data are available in the Sequence Read Archive (SRA). We constructed an index for those gene expression data repositories, called All Of gene Expression (AOE), to integrate publicly available gene expression data. The web interface of AOE can graphically query data in addition to the application programming interface. By collecting gene expression data from RNA-seq in the SRA, AOE also includes data not included in GEO and AE. AOE is accessible as a search tool from the GEA website and is freely available at https://aoe.dbcls.jp/.


Assuntos
Indexação e Redação de Resumos/métodos , Bases de Dados Genéticas , Perfilação da Expressão Gênica , Software , Indexação e Redação de Resumos/normas , Humanos , Disseminação de Informação/métodos , Análise em Microsséries
12.
Perspect Psychol Sci ; 15(1): 202-203, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31721655

RESUMO

Citing an earlier study on eminence in psychology, Simonton (2016) argued that associations between measures of scholars' reputation, scientific productivity, and citation counts are only small to moderate [Simonton, D. K. (2016). Giving credit where credit's due: Why it's so hard to do in psychological science. Perspectives on Psychological Science, 11, 888-892]. However, this reading is based on partial regression coefficients, which underestimate the joint explanatory power of correlated variables. A reanalysis of the original data showed that a composite bibliometric index was substantially associated with reputation (ß = 0.70; 46% explained variance). Very similar results were obtained with a newly calculated h index (ß = 0.67; 42% explained variance). Although both Simonton's original analysis and the current reanalysis are inherently limited, the data suggest that the reputation of psychologists tracks their scientific contribution more closely than has been acknowledged in the recent literature.


Assuntos
Indexação e Redação de Resumos , Bibliometria , Humanos
13.
Int J Paediatr Dent ; 30(2): 110-117, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31650633

RESUMO

The International Associations for Dental Research (IADR) annual meeting is one of the most important dental meetings throughout the world, and researches about paediatric dentistry presented in this platform are often used to guide clinical work. To evaluate the publication outcomes of oral and poster paediatric proceedings, which were accepted by the International Associations for Dental Research (IADR), annual meetings from 2010 to 2016 and to analyse the possible factors influencing an abstract's progression to publication. Oral and poster abstracts were retrieved from the official website of IADR (2010-2016). Searching for subsequent publications was conducted in PubMed and Google Scholar (up to March 2019). Two authors independently selected studies, collected, and analysed data. A total of 1396 abstracts were identified, including 275 oral presentations and 1121 poster presentations. Finally, 606 were published in peer-reviewed journals, with a publication rate of 43.41%. Abstracts were published earlier if it is from Europe, well funded, presented orally, or with large sample size. The high publication rate of the IADR proceedings supported the impact of IADR annual meetings on paediatric dentistry in the last 10 years.


Assuntos
Pesquisa em Odontologia , Publicações , Indexação e Redação de Resumos , Criança , Congressos como Assunto , Humanos , Odontopediatria , Sociedades Médicas
14.
Mem. Inst. Invest. Cienc. Salud (Impr.) ; 17(3): 63-71, dic.2019. tab
Artigo em Espanhol | LILACS, BDNPAR | ID: biblio-1047993

RESUMO

Los resúmenes de las tesis permiten que los lectores conozcan de manera rápida el contenido de las mismas, y representan la visibilidad institucional, sin embargo, la calidad de los mismos no es analizada de manera frecuente. De allí, que el objetivo del trabajo fue relevar la calidad de los resúmenes de las tesis de maestrías y doctorados de la Universidad Nacional de Asunción. El diseño fue documental, descriptivo con componente analítico y trasversal donde la unidad de análisis quedó constituida por 164 tesis. Los hallazgos dan cuenta que las dimensiones calificadas como Muy bueno fueron Calidad del Título y Explicitación de Objetivos, para la dimensión Consistencia entre Objetivo, Resultado y Título, la calidad fue aceptable. Los resultados muestran la necesidad de mejorar la calidad de los resúmenes(AU)


The thesis abstracts allow readers to quickly know the content of the theses, and represent the institutional visibility, however, the quality of them is not analyzed frequently. Based on this, the objective was to evaluate the quality of the abstracts of the master and doctoral theses of the Universidad Nacional de Asunción. The design was documentary, descriptive cross-sectional with analytical components. The analysis unit was constituted by 164 theses. The findings show that the dimensions classified as very good were Quality of the Title and Objectives Explicitation, while for the dimension Consistency between Objective, Result and Title, the quality was acceptable. The results show the need to improve the quality of the abstracts(AU)


Assuntos
Controle de Qualidade , Dissertação Acadêmica , Indexação e Redação de Resumos
15.
Recurso educacional aberto em Espanhol | CVSP - Regional | ID: oer-3867

RESUMO

Indización LILACS Calidad de las revistas científicas Política editorial Constituición del equipo editorial Ética en la publicación científica Peer Review Guías de publicación de resultados de investigación científica Publicación de artículos: impacto y relevancia de la normalización en el flujo editorial Divulgacion cientifica


Assuntos
Indexação e Redação de Resumos , Acesso à Informação , Atividades Científicas e Tecnológicas , Portais de Acesso a Revistas Científicas , LILACS
16.
Recurso educacional aberto em Espanhol | CVSP - Regional | ID: oer-3868

RESUMO

Introducción a LILACS: acceso, visibilidad y calidad de la producción científica y técnica de América Latina y el Caribe


Assuntos
Indexação e Redação de Resumos , Atividades Científicas e Tecnológicas , LILACS
17.
Tunis Med ; 97(10): 1160-1168, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31691944

RESUMO

OBJECTIVE: To describe both editorial and thematic profile of biomedical publications related to the theme «Ramadan and Health¼, indexed in «Medline¼ database till December 31th 2018. METHODS: This is a bibliometric study via «Medline¼ database using the following documentation query: «Fasting¼ [Majr] AND («Islam¼ [Majr] OR Ramadan [All Fields]). Data was collected through the «Medline¼ Material Safety Data Sheets from the NLM Library. Publications' themes have been defined by major descriptors (Majr). The generic descriptor corresponded to the Majr word hierarchically superior in the «Medline¼ Mesh descriptor thesaurus. RESULTS: A total of 508 articles were captured, of which 13% were reviews and 5% were randomized controlled trials. These publications were published by 272 journals belonging to 38 countries, and signed by 108 authors in first position and 398 in last position. The number of major descriptors used to index these publications related to «Ramadan and Health¼ was 484. Endocrine System Diseases (Diabetes mellitus) and Human Activities (Exercise) were the main major generic keywords, indexing respectively 28% and 20% of this literature. CONCLUSION: «Ramadan and Health¼ is increasingly, a theme of scientific and biomedical research of great interest worldwide in order to manage health problems, especially diabetes mellitus. Expanding the scope of its applications to other global burden of disease's areas would be useful.


Assuntos
Jejum , Islamismo , Publicações Periódicas como Assunto/estatística & dados numéricos , Indexação e Redação de Resumos , Bibliometria , Humanos , MEDLINE/estatística & dados numéricos
18.
Spine Deform ; 7(6): 845-856, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31731993

RESUMO

STUDY DESIGN: Retrospective review of abstracts of SRS podium presentations from 2011 to 2017. OBJECTIVE: The objective of this study was to demonstrate trends in topics of SRS podium presentations and to create an abstract registry for future deformity research. SUMMARY OF BACKGROUND DATA: Podium presentations at the SRS annual meetings are considered excellent for their quality research in current areas of interest. Knowing the trends of these studies would help surgeons understand current interests in spinal deformity. METHODS: Abstract books from 2011 to 2017 were retrieved and titles were extracted. From each title and abstract body, keywords were identified and collected. Keywords were categorized into several groups: subjects of study, topics not related to treatment, conservative treatment, surgery, treatment result, complications, revision, long-term follow-up, cost, and questionnaire. The frequency of each keyword was ranked to represent areas of interest, and trended according to year. RESULTS: The most popular key words in each group were AIS, prognostic factor, posterior surgery, sagittal alignment, and nerve and cord safety. There has been an increasing trend for AIS, EOS, NM, ASD, tumors, etiology, pathology, prognostic factors, radiographic diagnoses, radiographic parameters, and questionnaire/database studies. There has been a decreasing trend for conservative treatment, postoperative care, growing rod, pedicle screws, hooks, bleeding, and radiation safety. CONCLUSION: We report the trend of SRS podium presentation. We hope that these data will be of interest to our members as a representation of where interests have been for the SRS, and these data can be the foundation of an SRS AM abstract registry for spinal deformity research.


Assuntos
Escoliose/epidemiologia , Escoliose/terapia , Sociedades Médicas/organização & administração , Cirurgiões/educação , Indexação e Redação de Resumos , Bases de Dados Factuais , Humanos , Sistema de Registros , Estudos Retrospectivos , Escoliose/complicações , Escoliose/diagnóstico , Sociedades Médicas/estatística & dados numéricos
19.
Trials ; 20(1): 630, 2019 Nov 19.
Artigo em Inglês | MEDLINE | ID: mdl-31744527

RESUMO

Randomized controlled trials are considered the gold standard in assessing treatment regimens, and since abstracts may be the only part of a paper that a physician reads, accurate reporting of data in abstracts is essential. The CONSORT checklist for abstracts was designed to standardize data reporting; however, for papers submitted to anesthesiology journals, the level of adherence to the CONSORT checklist for abstracts is unknown. Therefore, we commend Janackovic and Puljak for their efforts in determining the adherence of reports of trials in the highest-impact anesthesiology journals between 2014 and 2016. The results of their study are extremely important; however, we believe that that study had some methodological limitations, which we discuss in this manuscript.


Assuntos
Indexação e Redação de Resumos , Anestesiologia , Publicações Periódicas como Assunto , Ensaios Clínicos Controlados Aleatórios como Assunto , Projetos de Pesquisa/normas , Lista de Checagem , Humanos
20.
Psicothema ; 31(4): 351-362, 2019 Nov.
Artigo em Espanhol | MEDLINE | ID: mdl-31634079

RESUMO

Research Ranking of Spanish Public Universities (2019). BACKGROUND: The changes produced in the Spanish university system due to the Bologna process require periodically updated evaluation reports of research activity. The objective of this study is to update the last available ranking of Spanish public universities, based on data from 2013-2018. METHOD: The production and productivity of each university were assessed based on seven specific indicators and a global score: articles in journals indexed in the JCR (Journal Citation Reports), research periods, R+D projects, doctoral theses, FPU (training of university professors) grants, FPI (training of personal researchers) grants, and patents. RESULTS: Globally, the universities Complutense of Madrid, Barcelona, and Granada hold the first positions in terms of production, while the first positions in terms of productivity are held by the universities Pompeu Fabra, Autonomous of Madrid, and Autonomous of Barcelona. CONCLUSIONS: The universities that hold the top positions in this ranking remain relatively steady over time and are also the Spanish universities that stand out in international classifications.


Assuntos
Eficiência Organizacional/classificação , Setor Público/classificação , Pesquisa/classificação , Universidades/classificação , Indexação e Redação de Resumos/estatística & dados numéricos , Dissertações Acadêmicas como Assunto , Bibliometria , Eficiência Organizacional/estatística & dados numéricos , Docentes/educação , Organização do Financiamento/classificação , Organização do Financiamento/estatística & dados numéricos , Humanos , Patentes como Assunto/estatística & dados numéricos , Setor Público/estatística & dados numéricos , Pesquisa/estatística & dados numéricos , Universidades/estatística & dados numéricos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA