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Ferro R.,University of Caldas | Hernandez C.,University of Caldas | Puerta G.,Minuto de Dios University Corporation
International Journal of Engineering and Technology | Year: 2016

This document describes the architecture and technology of an IPTV network and, present the direct causes that generate considerable in the delay time of channel switching to user perception. Also some techniques that have been developed to mitigate the delay in the zapping are listed. This work propose developing an ARIMA time series model to model and predict the behaviour of the rating in the channels with more audience on an IPTV platform. The validation of the proposed model is performed from real data of the rating provided by UNE Telecommunications. The results show a low percentage of error in the prediction of the rating for one week and mitigation of channel zapping delay in 68% approximately. Source

Objective To compare the perceptions about HIV/AIDS of homosexual and bisexual Colombian males who live in the Colombian "Eje Cafetero" (Coffee Zone) and of those who migrated to Spain, in order to investigate whether those perceptions have an influence on the social vulnerability of the groups involved, which is determined by aspects such as inequalities that may emerge from ignorance about cultural and sexual diversity of the people who are undergoing a migratory process. Methods This research has a transnational character and was carried out by way of in-depth interviews of adult males living in the autonomous communities of Madrid, Valencia, Cataluña and Andalucía in Spain, and in the departments of Caldas, Quindío, Risaralda and Valle del Cauca in Colombia between 2011 and 2013. In total, 87 interviews were performed in both countries. Conclusion The relationship between migration and sexuality must be contemplated from a comprehensive viewpoint that enriches understanding both of the society of origin as well as of the welcoming country through a consideration of social and cultural aspects. Any health promotion and prevention program expecting to have an influence on social aspects must take into account people’s particularities in order to avoid generalizations and their exploitation, recognizing them and making them visible as individuals with full rights who express opinions, speak and participatevisible as whole right individuals, who express opinions, speakand participate. © 2016, Universidad Nacional de Colombia. All Rights Reserved. Source

Avendano J.G.,Luis Amigo University Foundation | Ramirez L.M.S.,Minuto de Dios University Corporation
Revista Latinoamericana de Psicopatologia Fundamental | Year: 2016

To understand the practices and the experimental formation of the psychopedagogy of abnormal childhood in Colombia, carried out in the San Jose Juvenile Correctional Facility and Work School, Colombia, between 1914 and 1947. Methods and materials: qualitative study, of a historical-hermeneutic approach, using documentary research, and file heuristics of document heritage and institutional historiography within the study period. Conclusions The emergence of a new special education regime (medical and psychopedagogical) established an important change in the model of punishing reformatory to pedagogical intervention, influenced by crossing scientific doctrines of the late nineteenth and early twentieth centuries, such as the rule of normal and pathological, the degeneration theory and eugenics, for perfecting a modern subject who can be useful to itself and to society. © 2009 University Association for Research in Fundamental Psychopathology. Source

Acevedo-Triana C.A.,Pontifical Xavierian University | Avila-Campos J.E.,Minuto de Dios University Corporation | Cardenas L.F.,University of Los Andes, Colombia
Revista Mexicana de Neurociencia | Year: 2014

The effect of exercise on brain function has been reported in several studies over the years, but the mechanism that could explain this effect is not always consistent, and instead, there have proposed several different mechanisms. This review shows in its initial part a description of the effects of exercise on brain structure and function at different levels, from the molecular and epigenetic level to cognitive level. Then, the basic features of motor control and the effects of training, learning and motor memory encoding are described. Finally, we discuss on the possibility that the phenomena of creation of new neurons and synapses may explain the effects of exercise and motor activity on cognition, but probably in the form of induction of this plasticity is given by different molecular and cellular routes. Source

Alvarez O.F.B.,Fundacion Universitaria Juan de Castellanos | Molano J.F.G.,Fundacion Universitaria Juan de Castellanos | Bejarano W.J.C.,Minuto de Dios University Corporation
Acta Agronomica | Year: 2016

The aim of this research was to determine the effect of formative pruning of olive trees in the quantity of nitrogen fixing fungi colonies and their activity in the rhizosphere of productive trees established in Sutamarchán, Boyacá. Trees in productive stage (<4 years) old were selected and a complete randomized design with two treatments (pruning and no pruning) and three repetitions was used. Rhizosphere soil samples were carried out to determine the population of diazotrophs microorganisms and concentrations of NH4, NO3, CO, Fe y Mg; leaves were sampled to determine elements concentration. The statistical analysis concluded that pruning olive trees tended to increase the acidity in soil. N concentrations in soil and leaves were significantly lowest than the no-pruning trees. However, nitrogen fixing microorganisms populations were higher but with less efficiency, possibly related with the free-living fixation. The concentrations of Fe and Mg in soil, suggest a constant nitrogenase activity, but N is immobilized possibly by the microbial metabolism, lowering the possibility of being absorbed by the trees; Ca levels restricts the N nutrition. To take into account in future experiments, it's suggested to identify microorganisms populations, and measure acetylene reducing activity and the mineralization rate. Source

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