478 resultados para Citations


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Context: Black women are reported to have a higher prevalence of uterine fibroids, and a threefold higher incidence rate and relative risk for clinical uterine fibroid development as compared to women of other races. Uterine fibroid research has reported that black women experience greater uterine fibroid morbidity and disproportionate uterine fibroid disease burden. With increased interest in understanding uterine fibroid development, and race being a critical component of uterine fibroid assessment, it is imperative that the methods used to determine the race of research participants is defined and the operational definition of the use of race as a variable is reported for methodological guidance, and to enable the research community to compare statistical data and replicate studies. ^ Objectives: To systematically review and evaluate the methods used to assess race and racial disparities in uterine fibroid research. ^ Data Sources: Databases searched for this review include: OVID Medline, NML PubMed, Ebscohost Cumulative Index to Nursing and Allied Health Plus with Full Text, and Elsevier Scopus. ^ Review Methods: Articles published in English were retrieved from data sources between January 2011 and March 2011. Broad search terms, uterine fibroids and race, were employed to retrieve a comprehensive list of citations for review screening. The initial database yield included 947 articles, after duplicate extraction 485 articles remained. In addition, 771 bibliographic citations were reviewed to identify additional articles not found through the primary database search, of which 17 new articles were included. In the first screening, 502 titles and abstracts were screened against eligibility questions to determine citations of exclusion and to retrieve full text articles for review. In the second screening, 197 full texted articles were screened against eligibility questions to determine whether or not they met full inclusion/exclusion criteria. ^ Results: 100 articles met inclusion criteria and were used in the results of this systematic review. The evidence suggested that black women have a higher prevalence of uterine fibroids when compared to white women. None of the 14 studies reporting data on prevalence reported an operational definition or conceptual framework for the use of race. There were a limited number of studies reporting on the prevalence of risk factors among racial subgroups. Of the 3 studies, 2 studies reported prevalence of risk factors lower for black women than other races, which was contrary to hypothesis. And, of the three studies reporting on prevalence of risk factors among racial subgroups, none of them reported a conceptual framework for the use of race. ^ Conclusion: In the 100 uterine fibroid studies included in this review over half, 66%, reported a specific objective to assess and recruit study participants based upon their race and/or ethnicity, but most, 51%, failed to report a method of determining the actual race of the participants, and far fewer, 4% (only four South American studies), reported a conceptual framework and/or operational definition of race as a variable. However, most, 95%, of all studies reported race-based health outcomes. The inadequate methodological guidance on the use of race in uterine fibroid studies, purporting to assess race and racial disparities, may be a primary reason that uterine fibroid research continues to report racial disparities, but fails to understand the high prevalence and increased exposures among African-American women. A standardized method of assessing race throughout uterine fibroid research would appear to be helpful in elucidating what race is actually measuring, and the risk of exposures for that measurement. ^

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Cardiovascular disease (CVD) is highly preventable, yet it is a leading cause of death among women in Texas. The primary goals of this research were to examine past and current trends of CVD, as well as identify whether there is an association between the insurance coverage and mortality from CVD among women aged 60–65 in Texas between 2000 and 2011. ^ The systematic review of the research is based on the guidelines and recommendations set by the Centre for Reviews and Dissemination for conducting reviews in health care. Over 47 citations of peer-reviewed articles from Ovid MEDLINE and PubMed databases and five websites were identified, of which 7 studies met inclusion criteria for the first systematic review to examine the trends of CVD in Texas. Ten citations of peer-reviewed articles from Ovid MEDLINE and PubMed databases and five web sites were reviewed for the second systematic review (to study the association between insurance coverage and cardiovascular health among Texas women 60–64 years of age), of which 3 studies met inclusion criteria and were included in the research. The results of the study highlighted key gaps in the existing literature and important areas for the further research, as well as determined directions for future public health CVD prevention programs in Texas. ^ Based on the conducted research, the major determinants of premature mortality among women attributed to cardiovascular disease are based on individual level characteristics, more specifically sex, age, race/ethnicity, and education. The results indicate that African American and non-Hispanic white women are more likely to have higher CVD mortality rates than Hispanic women due to higher prevalence of cardiac risk factors. The data also shows higher levels of mortality from CVD in the southeastern United States, with Texas ranking as the third state with the highest prevalence of CVD among women. According to the Texas Department of State Health Services, there are approximately 56,000 deaths caused by CVD annually in Texas, which represents about one death every ten minutes. Coronary artery disease and stroke were the causes of 31.2 percent of all female deaths in Texas in 2009, meaning that approximately 68 women die from any form of cardiac disease in Texas each day. ^ The data of the reviewed studies indicate that women' lack of health insurance was significantly associated with a higher prevalence of cardiovascular disease. The uninsured women were more likely to be unaware of their risk factors and more likely to have undiagnosed diabetes—a co-morbidity factor of CVD. One of the studies also reports strong correlation between state rates of uninsured and lower rates of preventive care. Given these strong correlations, those who were chronically uninsured were at a higher risk of mortality than the insured, due to prolonged periods of time without basic access to preventive and medical care. ^ Suggested recommendations to decrease CVD mortality rates in Texas are consistent with the existing literature and include state policy development that addresses elimination of health disparities, consideration of potential benefits of universal health coverage by the legislative policymakers, and maintenance of solid partnerships between public health agencies and hospitals to educate on, diagnose, and treat CVD among the female population in Texas. ^

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Hepatitis B virus (HBV) is a significant cause of liver diseases and related complications worldwide. Both injecting and non-injecting drug users are at increased risk of contracting HBV infection. Scientific evidence suggests that drug users have subnormal response to HBV vaccination and the seroprotection rates are lower than that in the general population; potentially due to vaccine factors, host factors, or both. The purpose of this systematic review is to examine the rates of seroprotection following HBV vaccination in drug using populations and to conduct a meta-analysis to identify the factors associated with varying seroprotection rates. Seroprotection is defined as developing an anti-HBs antibody level of ≥ 10 mIU/ml after receiving the HBV vaccine. Original research articles were searched using online databases and reference lists of shortlisted articles. HBV vaccine intervention studies reporting seroprotection rates in drug users and published in English language during or after 1989 were eligible. Out of 235 citations reviewed, 11 studies were included in this review. The reported seroprotection rates ranged from 54.5 – 97.1%. Combination vaccine (HAV and HBV) (Risk ratio 12.91, 95% CI 2.98-55.86, p = 0.003), measurement of anti-HBs with microparticle immunoassay (Risk ratio 3.46, 95% CI 1.11-10.81, p = 0.035) and anti-HBs antibody measurement at 2 months after the last HBV vaccine dose (RR 4.11, 95% CI 1.55-10.89, p = 0.009) were significantly associated with higher seroprotection rates. Although statistically nonsignificant, the variables mean age>30 years, higher prevalence of anti-HBc antibody and anti-HIV antibody in the sample population, and current drug use (not in drug rehabilitation treatment) were strongly associated with decreased seroprotection rates. Proportion of injecting drug users, vaccine dose and accelerated vaccine schedule were not predictors of heterogeneity across studies. Studies examined in this review were significantly heterogeneous (Q = 180.850, p = 0.000) and factors identified should be considered when comparing immune response across studies. The combination vaccine showed promising results; however, its effectiveness compared to standard HBV vaccine needs to be examined systematically. Immune response in DUs can possibly be improved by the use of bivalent vaccines, booster doses, and improving vaccine completion rates through integrated public programs and incentives.^

Relevância:

10.00% 10.00%

Publicador:

Resumo:

El propósito del trabajo ha sido caracterizar el área de Agriculture, Multidisciplinary en Argentina, revisándose a nivel institucional, a través de la base de datos Web of Science, los trabajos realizados por investigadores en Instituciones argentinas y publicados en revistas internacionales con factor de impacto entre 1997 y 2009. En el contexto de América Latina, se han publicado 7795 trabajos de todos los tipos documentales y 7622 del tipo artículo o revisión en 49 revistas, y a nivel de Argentina se han encontrado 531 artículos o revisiones publicados en 31 revistas, la mayoría en inglés (80,23%), pero también en español (15,25%) y en portugués (4,33%). Por otro lado, se han analizado las Instituciones desde el punto de vista cuantitativo y cualitativo mediante diversos indicadores bibliométricos, como el Factor de Impacto Ponderado, el Factor de Impacto Relativo y la ratio número de citas frente a número de documentos, encontrándose que entre las instituciones más productivas destacan el Consejo Nacional de Investigaciones Científicas y Técnicas por el número de documentos y el Centro de Investigación y Desarrollo en Criotecnología de Alimentos por el Factor de Impacto Ponderado y por la ratio citas frente a documentos. Se observa una escasa colaboración internacional.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

La aparición de Google Scholar en 2004 supuso una revolución tanto en los procesos de búsqueda de información académica como en los de evaluación científica (especialmente en las áreas de las Ciencias sociales y humanas) gracias a su ingente base de datos, basada en la recopilación de cualquier documento académico online, a pesar de los errores e imprecisiones existentes en la correcta vinculación de citas. Este trabajo presenta la elaboración de diferentes productos métricos de información elaborados a partir de Google Scholar (H Index Scholar, Publishers Scholar Metrics, Journal Scholar Metrics, La Biblioteconomía Española según Google Scholar Citations) con el propósito de mostrar la potencialidad y utilidad de esta base de datos a la hora de ser utilizada por los diferentes actores involucrados en la creación, difusión y evaluación de la actividad científica.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Se presenta una descripción del portal de revistas científicas SciELO y del identificador DOI a través de su alcance, año de creación, historia, administración, normativa, estructura, ISBN-A y fuentes de consulta. Se brinda información acerca de la aplicación del DOI en las citas bibliográficas: en los estilos APA y Vancouver y en las normas ISO 690 (ISO, 2010) y ABNT 6023 (ABNT, 2002). El trabajo se propuso explorar el grado de implementación del DOI en las revistas científicas disponibles en SciELO, identificar el lugar de visualización del DOI, conocer la cantidad de editores según el prefijo DOI, determinar la cantidad de títulos de revistas que incluyen en el sufijo el código ISSN e identificar grado de aplicación del DOI en los estilos y en las normas de citas bibliográficas disponibles dentro de SciELO. Se aplicó una metodología descriptiva donde los datos fueron recolectados a través de la observación directa de las páginas web de las 898 revistas vigentes disponibles entre los meses de diciembre de 2012 y enero de 2013 en el portal SciELO. Se concluye que: menos del 50 de los países que conforman SciELO en la actualidad están empleando el DOI en sus publicaciones; el código se visualiza fundamentalmente en los archivos HTML; sólo 30 de los 929 editores lo implementaron y que en la mayoría de los casos se incluye el ISSN dentro del sufijo del identificador y que, si bien SciELO utiliza el DOI en la totalidad de las citas de sus artículos, no lo hace en forma estricta tal como lo establecen las normas y los estilos

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Se presenta una descripción del portal de revistas científicas SciELO y del identificador DOI a través de su alcance, año de creación, historia, administración, normativa, estructura, ISBN-A y fuentes de consulta. Se brinda información acerca de la aplicación del DOI en las citas bibliográficas: en los estilos APA y Vancouver y en las normas ISO 690 (ISO, 2010) y ABNT 6023 (ABNT, 2002). El trabajo se propuso explorar el grado de implementación del DOI en las revistas científicas disponibles en SciELO, identificar el lugar de visualización del DOI, conocer la cantidad de editores según el prefijo DOI, determinar la cantidad de títulos de revistas que incluyen en el sufijo el código ISSN e identificar grado de aplicación del DOI en los estilos y en las normas de citas bibliográficas disponibles dentro de SciELO. Se aplicó una metodología descriptiva donde los datos fueron recolectados a través de la observación directa de las páginas web de las 898 revistas vigentes disponibles entre los meses de diciembre de 2012 y enero de 2013 en el portal SciELO. Se concluye que: menos del 50 de los países que conforman SciELO en la actualidad están empleando el DOI en sus publicaciones; el código se visualiza fundamentalmente en los archivos HTML; sólo 30 de los 929 editores lo implementaron y que en la mayoría de los casos se incluye el ISSN dentro del sufijo del identificador y que, si bien SciELO utiliza el DOI en la totalidad de las citas de sus artículos, no lo hace en forma estricta tal como lo establecen las normas y los estilos

Relevância:

10.00% 10.00%

Publicador:

Resumo:

La aparición de Google Scholar en 2004 supuso una revolución tanto en los procesos de búsqueda de información académica como en los de evaluación científica (especialmente en las áreas de las Ciencias sociales y humanas) gracias a su ingente base de datos, basada en la recopilación de cualquier documento académico online, a pesar de los errores e imprecisiones existentes en la correcta vinculación de citas. Este trabajo presenta la elaboración de diferentes productos métricos de información elaborados a partir de Google Scholar (H Index Scholar, Publishers Scholar Metrics, Journal Scholar Metrics, La Biblioteconomía Española según Google Scholar Citations) con el propósito de mostrar la potencialidad y utilidad de esta base de datos a la hora de ser utilizada por los diferentes actores involucrados en la creación, difusión y evaluación de la actividad científica.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Se presenta una descripción del portal de revistas científicas SciELO y del identificador DOI a través de su alcance, año de creación, historia, administración, normativa, estructura, ISBN-A y fuentes de consulta. Se brinda información acerca de la aplicación del DOI en las citas bibliográficas: en los estilos APA y Vancouver y en las normas ISO 690 (ISO, 2010) y ABNT 6023 (ABNT, 2002). El trabajo se propuso explorar el grado de implementación del DOI en las revistas científicas disponibles en SciELO, identificar el lugar de visualización del DOI, conocer la cantidad de editores según el prefijo DOI, determinar la cantidad de títulos de revistas que incluyen en el sufijo el código ISSN e identificar grado de aplicación del DOI en los estilos y en las normas de citas bibliográficas disponibles dentro de SciELO. Se aplicó una metodología descriptiva donde los datos fueron recolectados a través de la observación directa de las páginas web de las 898 revistas vigentes disponibles entre los meses de diciembre de 2012 y enero de 2013 en el portal SciELO. Se concluye que: menos del 50 de los países que conforman SciELO en la actualidad están empleando el DOI en sus publicaciones; el código se visualiza fundamentalmente en los archivos HTML; sólo 30 de los 929 editores lo implementaron y que en la mayoría de los casos se incluye el ISSN dentro del sufijo del identificador y que, si bien SciELO utiliza el DOI en la totalidad de las citas de sus artículos, no lo hace en forma estricta tal como lo establecen las normas y los estilos

Relevância:

10.00% 10.00%

Publicador:

Resumo:

La aparición de Google Scholar en 2004 supuso una revolución tanto en los procesos de búsqueda de información académica como en los de evaluación científica (especialmente en las áreas de las Ciencias sociales y humanas) gracias a su ingente base de datos, basada en la recopilación de cualquier documento académico online, a pesar de los errores e imprecisiones existentes en la correcta vinculación de citas. Este trabajo presenta la elaboración de diferentes productos métricos de información elaborados a partir de Google Scholar (H Index Scholar, Publishers Scholar Metrics, Journal Scholar Metrics, La Biblioteconomía Española según Google Scholar Citations) con el propósito de mostrar la potencialidad y utilidad de esta base de datos a la hora de ser utilizada por los diferentes actores involucrados en la creación, difusión y evaluación de la actividad científica.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Characterization of the diets of upper-trophic predators is a key ingredient in management including the development of ecosystem-based fishery management plans, conservation efforts for top predators, and ecological and economic modeling of predator prey interactions. The California Current Predator Diet Database (CCPDD) synthesizes data from published records of predator food habits over the past century. The database includes diet information for 100+ upper-trophic level predator species, based on over 200 published citations from the California Current region of the Pacific Ocean, ranging from Baja, Mexico to Vancouver Island, Canada. We include diet data for all predators that consume forage species: seabirds, cetaceans, pinnipeds, bony and cartilaginous fishes, and a predatory invertebrate; data represent seven discrete geographic regions within the CCS (Canada, WA, OR, CA-n, CA-c, CA-s, Mexico). The database is organized around predator-prey links that represent an occurrence of a predator eating a prey or group of prey items. Here we present synthesized data for the occurrence of 32 forage species (see Table 2 in the affiliated paper) in the diet of pelagic predators (currently submitted to Ecological Informatics). Future versions of the shared-data will include diet information for all prey items consumed, not just the forage species of interest.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The growing importance of innovation in economic growth has encouraged the development of innovation capabilities in East Asia, within which China, Japan, and Korea are most important in terms of technological capabilities. Using Japanese patent data, we examine how knowledge networks have developed among these countries. We find that Japan's technological specialization saw little change, but those of Korea and China changed rapidly since 1970s. By the year 2009, technology specialization has become similar across three countries in the sense that the common field of prominent technology is "electronic circuits and communication technologies". Patent citations suggest that technology flows were largest in the electronic technology, pointing to the deepening of innovation networks in these countries.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The growing importance of innovation in economic growth has encouraged the development of innovation capabilities in East Asia, within which China, Japan, and Korea are most important in terms of technological capabilities. Using U.S. patent data, we examine how knowledge networks have developed among these countries. We find that Japan's technological specialization saw gradual changes, but those of Korea and China changed rapidly since 1970s. By the year 2009, technology specialization has become similar across three countries in the sense that the common fields of prominent technology are electronics and semiconductors. Patent citations suggest that technology flows were largest in the electronics technology, pointing to the deepening of innovation networks in these countries. Together with our prior work, the Japanese and U.S. data produce similar conclusions about innovation networks.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

This paper compares three knowledge carriers—trade, foreign direct investment (FDI), and inventors—as knowledge mediums, and investigates their effects on knowledge flow in East Asia from 1996 to 2010. Using patent citations as a proxy for knowledge flow, this paper shows that FDI and inventor mobility have positive effects on increasing patent citations in East Asia when the technological portfolios of two countries are less similar. While trade shows statistical significance, the effect is inconsistent according to the regression models.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

We describe lpdoc, a tool which generates documentation manuals automatically from one or more logic program source files, written in Ciao, ISO-Prolog, and other (C)LP languages. It is particularly useful for documenting library modules, for which it automatically generates a rich description of the module interface. However, it can also be used quite successfully to document full applications. A fundamental advantage of using lpdoc is that it helps maintaining a true correspondence between the program and its documentation, and also identifying precisely to what versión of the program a given printed manual corresponds. The quality of the documentation generated can be greatly enhanced by including within the program text assertions (declarations with types, modes, etc. ...) for the predicates in the program, and machine-readable comments. One of the main novelties of lpdoc is that these assertions and comments are written using the Ciao system asseriion language, which is also the language of communication between the compiler and the user and between the components of the compiler. This allows a significant synergy among specification, debugging, documentation, optimization, etc. A simple compatibility library allows conventional (C)LP systems to ignore these assertions and comments and treat normally programs documented in this way. The documentation can be generated interactively from emacs or from the command line, in many formats including texinfo, dvi, ps, pdf, info, ascii, html/css, Unix nroff/man, Windows help, etc., and can include bibliographic citations and images, lpdoc can also genérate "man" pages (Unix man page format), nicely formatted plain ASCII "readme" files, installation scripts useful when the manuals are included in software distributions, brief descriptions in html/css or info formats suitable for inclusión in on-line Índices of manuals, and even complete WWW and info sites containing on-line catalogs of documents and software distributions. The lpdoc manual, all other Ciao system manuals, and parts of this paper are generated by lpdoc.