4 resultados para change-point detection
em Universidad del Rosario, Colombia
Resumo:
This paper analyzes the measure of systemic importance ∆CoV aR proposed by Adrian and Brunnermeier (2009, 2010) within the context of a similar class of risk measures used in the risk management literature. In addition, we develop a series of testing procedures, based on ∆CoV aR, to identify and rank the systemically important institutions. We stress the importance of statistical testing in interpreting the measure of systemic importance. An empirical application illustrates the testing procedures, using equity data for three European banks.
Resumo:
In this paper we search the concept of nonviolent resistance inquiring a rural experience from Rio Negro´s steppe. The initiative highlights the need to recognize the context of the resistance exercise and the consideration of three aspects: the evaluation and interpretation of space, the dispute to public policy and the restructuring of the family order. These three elements, which overlap material and symbolic aspects, are discussed from an organization of trade domestic craft production. The notion of “development” is discovered on the basis of the frameworks of values from which the reproduction of subordination is associated with this idea, and even the challenge of change is the basis of the proposal which reviews that development idea, and illuminates from this complexity the notion of “nonviolent resistance”.
Resumo:
El siguiente trabajo de investigación tiene como propósito la identificación, estudio y análisis de los principales errores de los gerentes colombianos en la administración y dirección de las empresas de hoy, el cual se encuentra dividido en cuatro partes: la primera hace referencia a la conceptualización del tema de investigación a nivel teórico que consiste en la definición que se ha determinado para el significado de error gerencial y dar respuesta a un conjunto de mitos de tipo epistemológicos, es decir, aquellos relacionados con significaciones o nociones que resultan tentativas desde otro punto de vista, pero que en efecto se diferencia del que se ha propuesto originalmente, permitiendo establecer los límites de lo que realmente implica dentro de la investigación. Luego, se realiza una contrastación y análisis teórico de los autores y sus estudios que busquen dar respuesta al problema de investigación enfocado en los principales errores de los gerentes colombianos en la administración y dirección de las organizaciones actuales. En tercera instancia, se muestran los resultados arrojados por la aplicación del instrumento para la detección y análisis de errores gerenciales en las organizaciones o empresas que fueron objeto de estudio con sus respectivos gerentes, de acuerdo con la metodología empleada para dicho caso. Por último, aparece una propuesta de cambio para la corrección de errores gerenciales encontrados y analizados en el contexto gerencial colombiano en pro de la perdurabilidad empresarial.
Resumo:
Abstract Objective: Evidence shows an association between muscular strength (MS) and health among youth, however low muscular strength cut-points for the detection of high metabolic risk in Latin-American populations are scarce. The aim of this study was two-fold: to explore potential age- and sex-specific thresholds of MS, for optimal cardiometabolic risk categorization among Colombian children and adolescents; and to investigate if cardiometabolic risk differed by MS group by applying the receiver operating characteristic curve (ROC) cut point. Methods: This is a secondary analysis of a cross-sectional study (the FUPRECOL study), published elsewhere. The FUPRECOL study assessments were conducted during the 2014– 2015 school year. MS was estimated by a handle dynamometer on 1,950 children and adolescents from Colombia, using the MS relative to weight (handgrip strength/body mass). A metabolic risk score was computed from the following components: waist circumference, triglycerides, HDL-c, glucose, systolic and diastolic blood pressure. ROC analysis showed a significant discriminatory accuracy of MS in identifying the low/high metabolic risk in children and adolescents and both gender. Results: In children, handgrip strength/body mass level for a low metabolic risk were 0.359 and 0.376 in girls and boys, respectively. In adolescents, these points were 0.440 and 0.447 in girls and boys, respectively. Conclusion: In conclusion, the results suggest a hypothetical MS level relative to weight for having a low metabolic risk, which could be used to identify youths at risk.