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Search Results: 1 - 10 of 402337 matches for " Cynthia M Cely "
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Risk of contrast induced nephropathy in the critically ill: a prospective, case matched study
Cynthia M Cely, Roland MH Schein, Andrew A Quartin
Critical Care , 2012, DOI: 10.1186/cc11317
Abstract: A prospective matched cohort study was conducted of patients scanned with or without radiocontrast enhancement while receiving intensive care in a Veterans Affairs Medical Center. Patients were matched for pre-scan measured creatinine clearance, diabetes, mechanical ventilation, and vasopressor use. Measured clearance was followed for three days after scanning. Evolution of nephropathy, as determined by change in measured clearance, was compared within matched pairs.Fifty-three pairs of patients satisfied matching criteria. Unmatched characteristics were similar among the pairs, including serum creatinine variability during the week preceding scanning (67 ± 85% among contrast recipients, 63 ± 62% among others) and clinical risk factors for renal failure. In 29 pairs, pre-scan measured clearances were less than 60 mL/minute/1.73 m2. Following scanning, measured clearance declined by at least 33% in 14 contrast and 19 non-contrast patients (95% confidence interval for contrast associated difference in nephropathy rates -27% to 9%), while a 50% reduction in clearance persisted three days after scanning in three contrast and nine non-contrast patients (95% confidence interval for difference in rates -25% to 2%).Among established intensive care unit patients declines in glomerular filtration following contrast-enhanced scanning are common, but these changes are far more likely to be attributable to factors other than the contrast exposure itself. The upper bound for the incidence of contrast induced renal injury lasting even three days was 2% in the population studied.Computerized tomography (CT) is invaluable for the management of critically ill patients. While the intravenous administration of iodinated radiographic contrast media (RCM) may be helpful or essential for adequate imaging, the potential complication of contrast induced nephropathy (CIN) is a significant concern. While it has no universally accepted definition, CIN typically refers to an at least modest dec
Elementos para caracterizar los "nuevos" medios de comunicación
Lic. Adriana M. Cely Alvarez
Revista Latina de Comunicación Social , 1999,
Abstract: La presencia de tecnología aplicada a los medios de comunicación ha ocasionado cambios en su estructura, presentación y distribución, naciendo nuevas propuestas electrónicas de diarios nacidos de empresas tradicionales de medios de comunicación o creados en la misma red de redes, Internet. Sin embargo, poco se conoce de estas nuevas ediciones, en cuanto a sus características de formato, tipo de contenido, frecuencia de actualización, medios interactivos, recursos multimedia aun cuando en Venezuela existen 19 diarios electrónicos. El trabajo, por tanto, persigue describir las características fundamentales de los medios, a fin de determinar su carácter de innovación. Este trabajo se fundamenta en la teoría de la innovación y en lo estudiado sobre los nuevos medios en cuanto al concepto de interactividad y soporte virtual que los fundamenta. La recolección de los datos se realizará mediante fichas y encuesta, esta última dirigida a gerentes de las empresas que elaboran los productos. Este estudio contribuirá a ampliar el conocimiento acerca de los diarios electrónicos; como referencia para la realización de otras publicaciones similares y como evaluación a las existentes; permitirá ampliar el campo teórico sobre el área de nuevas tecnologías de la información, la teoría de la comunicación y el surgimiento de nuevos medios de comunicación.
Media Hype and Its Influence on Athletic Performance  [PDF]
Cynthia M. Frisby, Wayne Wanta
Advances in Journalism and Communication (AJC) , 2018, DOI: 10.4236/ajc.2018.61001
Abstract: A survey of university athletes examined whether uses of four media (newspapers, television, radio or the Internet) for sports information were related to self-perceptions of emotions, motivations and attitudes. The results suggest that newspaper and Internet use reduced feelings of stress among the athletes, perhaps due to athletes’ use of the two media as diversions from the pressures of competitive athletics. Television use was not related to any of the measures of athletes’ self-perceptions.
Determinantes del crecimiento económico e intermediación bancaria: un análisis empírico para países latinoamericanos
Christine Carton M.,Cely Celene Ronquillo C.
Panorama Socioeconómico , 2008,
Abstract: Este artículo evalúa la contribución del sistema bancario al crecimiento económico de 16 países de América Latina, para el período 1979 a 2006. El contraste econométrico se basa en la técnica de datos en panel con efectos fijos, clasificando los países en dos muestras según el nivel de ingreso que exhibe cada uno. Los hallazgos tienden, generalmente, a corroborar un efecto positivo de la expansión del sector bancario sobre la tasa de crecimiento de los países, conforme a las predicciones de los modelos de crecimiento endógeno al respecto. Sin embargo, indican, igualmente, que la actividad de crédito puede impactar desfavorablemente en el crecimiento mientras se dirige esencialmente hacia los consumidores y el sector público, en detrimento del sector productivo.
Dise o y construcción de una prótesis para amputación transfemoral pediátrica con un sistema de desplazamiento vertical, validado por análisis por elementos finitos.
M.M. CELY B,E. MENDOZA,R. ARELLANA
El Hombre y la Máquina , 2011,
Abstract: Según la Organización Mundial de la Salud se estima que quinientos millones de personas en el mundo, es decir el 10% de la población, tiene algún tipo de discapacidad. De acuerdo con los datos arrojados por el Censo General 2010, realizado por el DANE, en Colombia, aproximadamente 2.640.000 presentan alguna limitación permanente, lo cual equivale al 6.4% del total de la población colombiana. Enfermedades degenerativas, violencia, conflicto armado, entre otros, han generado un número importante de adultos y ni os que han perdido una extremidad inferior. El impacto debido a la falta de un miembro desencadena una serie de problemas psicológicos, físicos, cognitivos, etc., que principalmente en ni os alteran su desarrollo moral, generan inseguridad, desconfianza, vulnerabilidad y conducen a problemas de interación con la sociedad. Con este proyecto se busca desarrollar en el país, dispositivos como prótesis de bajo costo que permitan ayudar a la población infantil en su readaptación al medio...
Discovery and validation of cell cycle arrest biomarkers in human acute kidney injury
Kianoush Kashani, Ali Al-Khafaji, Thomas Ardiles, Antonio Artigas, Sean M Bagshaw, Max Bell, Azra Bihorac, Robert Birkhahn, Cynthia M Cely, Lakhmir S Chawla, Danielle L Davison, Thorsten Feldkamp, Lui G Forni, Michelle Gong, Kyle J Gunnerson, Michael Haase, James Hackett, Patrick M Honore, Eric AJ Hoste, Olivier Joannes-Boyau, Michael Joannidis, Patrick Kim, Jay L Koyner, Daniel T Laskowitz, Matthew E Lissauer, Gernot Marx, Peter A McCullough, Scott Mullaney, Marlies Ostermann, Thomas Rimmelé, Nathan I Shapiro, Andrew D Shaw, Jing Shi, Amy M Sprague, Jean-Louis Vincent, Christophe Vinsonneau
Critical Care , 2013, DOI: 10.1186/cc12503
Abstract: We performed two multicenter observational studies in critically ill patients at risk for AKI - discovery and validation. The top two markers from discovery were validated in a second study (Sapphire) and compared to a number of previously described biomarkers. In the discovery phase, we enrolled 522 adults in three distinct cohorts including patients with sepsis, shock, major surgery, and trauma and examined over 300 markers. In the Sapphire validation study, we enrolled 744 adult subjects with critical illness and without evidence of AKI at enrollment; the final analysis cohort was a heterogeneous sample of 728 critically ill patients. The primary endpoint was moderate to severe AKI (KDIGO stage 2 to 3) within 12 hours of sample collection.Moderate to severe AKI occurred in 14% of Sapphire subjects. The two top biomarkers from discovery were validated. Urine insulin-like growth factor-binding protein 7 (IGFBP7) and tissue inhibitor of metalloproteinases-2 (TIMP-2), both inducers of G1 cell cycle arrest, a key mechanism implicated in AKI, together demonstrated an AUC of 0.80 (0.76 and 0.79 alone). Urine [TIMP-2].[IGFBP7] was significantly superior to all previously described markers of AKI (P <0.002), none of which achieved an AUC >0.72. Furthermore, [TIMP-2].[IGFBP7] significantly improved risk stratification when added to a nine-variable clinical model when analyzed using Cox proportional hazards model, generalized estimating equation, integrated discrimination improvement or net reclassification improvement. Finally, in sensitivity analyses [TIMP-2].[IGFBP7] remained significant and superior to all other markers regardless of changes in reference creatinine method.Two novel markers for AKI have been identified and validated in independent multicenter cohorts. Both markers are superior to existing markers, provide additional information over clinical variables and add mechanistic insight into AKI. Trial registration: ClinicalTrials.gov number NCT01209169.
A new way of describing meiosis that uses fractal dimension to predict metaphase I
Ross Cynthia M.
International Journal of Biological Sciences , 2005,
Abstract: Meiosis, the reductive nuclear division, is a continuum, but for purposes of communication, is described in stages. In sexually-reproducing organisms, including the dwarf mistletoe Arceuthobium americanum, prophase I of meiosis is prolonged (8 months for female A. americanum). Conversely, metaphase I, where chromosome pairs line up along a dividing cell's "equator", is relatively brief, difficult to predict, but critical regarding the random distribution of the paternal and maternal chromosomes in sexual organisms. However, descriptions of meiosis as either a continuum or stages are limited to qualitative observations. A quantification of meiosis can provide mathematical descriptors and allow for the prediction of when chromosomes reach the equator; this will not only be useful to researchers of cell division, but also to those requiring a large sample of metaphase I materials. Here, the probability-density function was used to calculate the fractal dimension of A. americanum nuclei undergoing early meiosis, and it predicted the onset of metaphase I by 2 days.
Delay of Game: A Content Analysis of Coverage of Black Male Athletes by Magazines and News Websites 2002-2012  [PDF]
Cynthia M. Frisby
Advances in Journalism and Communication (AJC) , 2016, DOI: 10.4236/ajc.2016.44009
Abstract: According to research on sports media, reporters have both gender and racial biases. Women are marginalized in the media (Billings, Halone, & Denham, 2002), and athletes are stereotyped based on race (Banet-Weiser, 1999). These depictions affect the public’s image of athletics and particular athletes. The purpose of this analysis is to determine if White male athletes are offered both more media attention and more salient coverage than Black male athletes (Billings, Halone, & Denham, 2002). Data obtained in the analysis show that, currently, coverage of athletes is not equal quantitatively or qualitatively. Disproportionate coverage involving black male athletes was found in news stories that involved instances of crime, domestic/sexual violence, moral failure, and/or the athlete’s “natural” skills and abilities.
A Content Analysis of Serena Williams and Angelique Kerber’s Racial and Sexist Microagressions  [PDF]
Cynthia M. Frisby
Open Journal of Social Sciences (JSS) , 2017, DOI: 10.4236/jss.2017.55019
Abstract: The primary purpose of this exploratory study was to determine if microaggressions regularly found in sport coverage were present in stories about two elite female tennis players. Microaggressions are subtle statements that unconsciously communicate denigrating messages to female athletes. In recent years, qualitative studies have introduced the types of microaggressions that female athletes experience. In the present study, a content analysis of 643 news stories was conducted in order to provide a quantitative measure of the frequency in which microaggressions appear in news stories about female athletes. Serena Williams, ranked number two in the list of top female tennis players, was selected because several qualitative studies show this female athlete of color is often the victim of racial slurs and epitaphs in news stories, as well as, news reports that feature insults to her physical appearance and body type. Angelique Kerber, the number one ranked female tennis player was selected in order to determine if an athlete of color receives more micro-aggresions than a top-ranked White female athlete. Data show that Serena Williams experienced more microaggresive themes related to gender roles and racial insults than Angelique Kerber (p < 0.0000). It is concluded that future research should explore in greater depth the microagression aimed at Black female athletes in all levels of sports and their participation.
Sacrificing Dignity for Publicity: Content Analysis of Female and Male Athletes on “Sports Illustrated” and “ESPN the Magazine” Covers from 2012-2016  [PDF]
Cynthia M. Frisby
Advances in Journalism and Communication (AJC) , 2017, DOI: 10.4236/ajc.2017.52007
Abstract: The purpose of the study was to assess changes in how often female athletes were portrayed on the cover when compared to male athletes. A content analysis of the manner by which male and female athletes were depicted on sports magazine covers from 2012-2016 was performed. A total of 245 cover pages taken from two top sports magazines, Sports Illustrated and ESPN: The magazine were used to analyze depictions of individual male and female athletes. Despite females’ increased participation in sport since the enactment of Title IX and calls for greater media coverage of female athletes, women appeared on just 10 percent of the covers compared to male athletes. Data show that the percentage of female athletes on the sports magazines covers did not change significantly over the span of five years and were comparable to levels reported by other researchers. Beyond the limited appearance on sport magazine covers, female athletes were shown in sexually objectifying poses, seductive eye gazes, scantily clad clothing, and sexy/inviting body poses while male athletes are often seen in their team uniforms depicted in active, game playing athletic motions associated or related to his sport. It is concluded that male athletes are still portrayed in ways which support hegemonic ideas of masculinity.
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