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Search Results: 1 - 10 of 6879 matches for " Guillermo Arenas "
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Familias, recursos y producciones: de la igualdad virtual a la desigualdad real
Guillermo Villegas Arenas
Nómadas , 1999,
Abstract: Existen indicadores dedicados a las desigualdades sociales de uso generalizado -Coeficiente de Variación, índice de Atkinson, índice de Gini- que toman en cuenta el hogar como unidad de análisis y presumen que en su interior no hay desigualdad; así, éstos se colocan de lado de modelos teóricos para el análisis económico de la familia que suponen que ésta es un ámbito de igualdad. Un abordaje diferente considera que en la familia se configura un marco de "conflictos cooperativos" en el cual se emprenden procesos y actividades, donde las des- igualdades pueden determinar aspectos como la toma de decisiones y el trabajo doméstico.
Púrpura trombocitopénico trombótico con respuesta exitosa a vincristina
Espinoza,Francisco; Leal,José Luis; Arenas,Guillermo;
Revista médica de Chile , 2007, DOI: 10.4067/S0034-98872007001200011
Abstract: thrombotic thrombocytopenic purpura presents as a multisystemic disease with thrombocytopenia, microangiopathic hemolytic anemia, fever, neurological and renal involvement. we report a 24 years-old male presenting with purpura and a generalized seizure. his blood tests showed an hemolytic anemia, unconjungated hyperbilirubinemia, increased lactated dehydrogenase, thrombocytopenia and impairment of renal function. he was initially treated with daily plasmapheresis and steroids without improvement. due to persistence of the disease, he was treated with two doses of intravenous vincristine in four days, with clinical and laboratory improvement. he was discharged 40 days after the last dose of vincristine, in good conditions
Púrpura trombocitopénico trombótico con respuesta exitosa a vincristina Successful treatment of thrombotic thrombocytopenic purpura with vincristine report of one case
Francisco Espinoza,José Luis Leal,Guillermo Arenas
Revista médica de Chile , 2007,
Abstract: Thrombotic thrombocytopenic purpura presents as a multisystemic disease with thrombocytopenia, microangiopathic hemolytic anemia, fever, neurological and renal involvement. We report a 24 years-old male presenting with purpura and a generalized seizure. His blood tests showed an hemolytic anemia, unconjungated hyperbilirubinemia, increased lactated dehydrogenase, thrombocytopenia and impairment of renal function. He was initially treated with daily plasmapheresis and steroids without improvement. Due to persistence of the disease, he was treated with two doses of intravenous vincristine in four days, with clinical and laboratory improvement. He was discharged 40 days after the last dose of vincristine, in good conditions
THE ECOLOGICAL INTEREST AND SOCIALLY RESPONSIBLE CONSUMPTION -TWO CONCEPTS FOR THE BUSINESSMAN’S ENVIRONMENTAL ADMINISTRATION-
Guillermo Villegas Arenas,Mario Hernán López Becerra
Luna Azul , 2006,
Abstract: This article thoroughly examines two aspects linked to environmental administration. The first: the socially responsible consumption, defined by Antil as “those behaviors and purchase decisions made by consumers that consider environmental and resource problems that are not only motivated by the desire to satisfy personal necessities, but also due to an interest regarding the possible adverse consequences and their consequent effects”. The second aspect: the ecological interest that recognizes that a simple life can help avoid environmental degradation, as well as preserving the Earth’s resources so that those less fortunate and the coming generations can use them according to their necessity.
On Simple Completely Reducible Binary-Lie Superalgebras over sl2(F)  [PDF]
Manuel Arenas
Advances in Pure Mathematics (APM) , 2015, DOI: 10.4236/apm.2015.55030
Abstract:

In this article, we prove that if B is a simple binary-Lie superalgebra whose even part is isomorphic to sl2(F) ?and whose odd part is a completely reducible binary-Lie-module over the even part, then B is a Lie superalgebra. We introduce also a binary-Lie module over which is sl2(F) not completely reducible.

Factores asociados a mortalidad a 30 días, en una muestra de pacientes con enfermedad cerebrovascular isquémica Factors associated to mortality alter 30 days, in a group of patients with cerebro-vascular ischemic disease (stroke)
Juan Guillermo Zarruk,Federico Arturo Silva,Paul Camacho López,William Arenas Borda
Acta Medica Colombiana , 2007,
Abstract:
Skewed Multivariate Birnbaum-Saunders Distributions
Artur J. Lemonte,Guillermo Martínez-Florez,Germán Moreno-Arenas
Statistics , 2012,
Abstract: The univariate Birnbaum-Saunders distribution has been used quite effectively to model times to failure for materials subject to fatigue and for modeling lifetime data. In this article, we define a skewed version of the Birnbaum-Saunders distribution in the multivariate setting and derive several of its properties. The proposed skewed multivariate model is an absolutely continuous distribution whose marginals are univariate Birnbaum-Saunders distributions. Estimation of the parameters by maximum likelihood is discussed and the Fisher's information matrix is determined. A skewed bivariate version for the generalized Birnbaum-Saunders distribution is also introduced. We provide an application to real data which illustrates the usefulness of the proposed multivariate model.
Macrocrustáceos incrustantes en el Parque Nacional Sistema Arrecifal Veracruzano: biodiversidad, abundancia y distribución
Winfield, Ignacio;Cházaro-Olvera, Sergio;Horta-Puga, Guillermo;Lozano-Aburto, Miguel ángel;Arenas-Fuentes, Virgilio;
Revista mexicana de biodiversidad , 2010,
Abstract: the biodiversity of encrusting macrocrustacean, abundance and spatial distribution patterns, as well as new records and range extensions were analyzed. six sites were positioned in the reef park considering distance to the coast, the geomorphology of the reef environment and the influence of pollutants. at each site a pvc structure was placed with 6 artificial plates at a 8-10 m depth to collect the encrusting macrocrustaceans. a total of 8 161 organisms was collected that belong to 5 orders, 19 families and 26 species. the most abundant species was the cirriped amphibalanus amphitrite, followed by the tanaid leptochelia forresti and the amphipods ampithoe ramondi, ampithoe sp., and ericthonius brasiliensis. three new records and 7 range extensions were found in this study. finally, the presence of 2 different groups of macrocrustaceans was detected, one in the southern part and another in the northern portion of the reef system.
Hacia una base normativa mexicana en la medición de calidad de vida relacionada con la salud, mediante el Formato Corto 36
Durán-Arenas,Luis; Gallegos-Carrillo,Katia; Salinas-Escudero,Guillermo; Martínez-Salgado,Homero;
Salud Pública de México , 2004, DOI: 10.1590/S0036-36342004000400005
Abstract: objective: to present the results of the application of the short format 36 instrument (sf-36) in the mexican states of sonora and oaxaca. the levels of quality of life were compared with those from canada and the united states. material and methods: the data were obtained using a survey on health service access, usage, and quality. the sf-36 is composed of 36 questions, which represent eight different domains on the health-related quality of life. these domains are used to estimate the physical and mental components of health. data analysis was performed to calculate the average scores for each domain for the total sample, by gender and age groups in each state. the regional differences were assessed by the difference of means. results: the total response was 98.5% of the 4200 selected households. the percent response values were similar between the two states. a total of 5961 subjects older than 25 years of age completed the questionnaire. males scored higher than females in all domains and in both components. regardless of sex, the highest variation was observed in adults up to 64 years of age mainly in three domains: overall health, social function, and mental health; in the 65-74 year age group occurred mostly in social function and mental health; and in adults older than 75 years only in mental health. the young adult age group (25 to 44 years) showed variation in a greater number of domains, while women exhibited more variation in the "extreme" age groups, 25 to 34 years and 75 years and older. the mean scores in our sample were higher than those found in canada and the united states in five domains and in the two summary components. canada showed higher scores in the other three domains (overall health, social function, and mental health). conclusions: sf-36 data are not available at the national level; hence, the authors recommend that their study results may serve as the normative reference for sf-36 in mexico. researchers using the sf-36 could compare the
APRENDIZAJE INTERACTIVO EN LA EDUCACIóN SUPERIOR A TRAVéS DE SITIOS WEB. UN ESTUDIO EMPíRICO
Francisco José Arenas Márquez,Miguel ángel Domingo Carrillo,Guillermo Molleda Jimena,Miguel ángel Ríos Martín
Pixel-Bit , 2009,
Abstract: Cada vez son más las asignaturas de educación superior que emplean la web como medio para crear lo que se ha venido a denominar aulas virtuales de formación. En nuestro caso, desde hace ya muchos a os las empleamos en cuatro asignaturas que se imparten en la Universidad de Sevilla. En este artículo presentamos un estudio empírico relativo al uso de las aulas virtuales y su incidencia en los procesos de ense anza-aprendizaje.
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