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Ibague, Colombia

The ' Universidad del Tolima ', is a faculty of higher education located in the Colombian city of Ibague capital of the department of Tolima, is a public autonomous institution departmental order created by Ordinance No. 005 of 1945, with legal, academic, administrative and financial autonomy and independent heritage that develops and manages its budget in accordance with the functions accordingly. In regard to policy and planning in the education sector is under the Ministry of National Education Colombia.It offers a wide range of academic, a modality has 23 undergraduate academic programs 3 technologies, 14 majors, 12 master's, one doctorate and distance mode offers 11 undergraduate degree programs, graduate 3, 4 technologies, 4 professional technicians, many of these programs are recognized for their high quality accreditation .The Universidad del Tolima has the Institute of Education.. Distance one of the largest and most important of Colombia because it has regional centers in the cities of Ibague, Bogotá , El Tunal, Kennedy Kennedy ), Medellin, Cali, Pereira, Neiva, Armenia, Popayán, Mocoa, Buenaventura , Girardot, Pitalito, El Espinal , Puerto Asis, Chaparral, Garzón , Campoalegre, Rivera , Algeciras Santander de Quilichao, Urabá, Villeta , Sibate, Fred and all municipalities in the department of TolimaIn the national rankings University of Tolima is one of the largest in the country and one of the students in academic and research best quality in the long list of public college’s remarkable career, and one of the top -level general. Wikipedia.

Calderon G.,Autonomous University of Coahuila | Garcia-Duque C.H.,University of Tolima
Nuclear and Particle Physics Proceedings | Year: 2015

We obtain two isospin amplitude decompositions of the B→Kππ decays. We use the method of addition of three isospin vectors, and prove the equivalency of the two isospin amplitude decompositions obtained. We only have considered contributions of the Hamiltonian to the transitions with change of isospin δI=0 and δI=1. The symmetry of isospin allows to relate the charged B+→K+π+π-, B+→K+π0π0, and B+→K0π0π+ channels with the neutral B0→K0π+π-, B0→K0π0π0, and B0→K+π0π- channels. Additionally, we obtain equivalent triangular relations in the charged and neutral channels. © 2015 Elsevier B.V.. Source

Moya R.,Costa Rica Institute of Technology | Marin J.D.,University of Tolima
New Forests | Year: 2011

Commercial Tectona grandis plantations using clones have attracted considerable interest for lumber production in tropical regions where small areas are frequent. However, studies on wood properties are limited. Therefore, the purpose of this study is to group clones with similar wood color characteristics using the CIELab system, and mechanical resistance by dynamic stiffness (Ed) in order to obtain different types of clones for different climate and edaphic conditions. It was found that lightness (L*), yellowness (b*), redness (a*), and Ed are similar to those found for other plantation trees. These wood characteristics are significantly influenced by clone and site. Variance due to clone and site went from 31 to 53% and from 2.95 to 24.22%, respectively. Another source of variance was distance from pith, with the exception of parameter b*, which was not affected. Finally, clones were grouped (using multivariate analysis) according to color and mechanical resistance. This analysis established 4 groups by color and 5 groups by Ed. Clone clustering will allow us to choose or use clones with similar wood properties according to site and environmental conditions increasing area production and wood quality uniformity. © 2011 Springer Science+Business Media B.V. Source

Barrios M.,University of Tolima | Frances F.,Polytechnic University of Valencia
Hydrological Processes | Year: 2012

Nonlinear dynamics and spatial variability in hydrological systems make the formulation of scaling theories difficult. Therefore, the development of knowledge related to scale effects, scaling techniques, parameterization and linkages of parameters across scales is highly relevant. The main purpose of this work is to analyse the spatial effect of the static storage capacity parameter H u and the saturated hydraulic conductivity parameter k s from microscale (sub-grid level) to mesoscale (grid level) and its implication to the definition of an optimum cell size. These two parameters describe the upper soil water characteristics in the infiltration process conceptualization of the TETIS hydrological model. At microscale, the spatial heterogeneity of H u and k s was obtained generating random parameter fields through probability distribution functions and a spatial dependence model with pre-established correlation lengths. The effective parameters at mesoscale were calculated by solving the inverse problem for each parameter field. Results indicate that the adopted inverse formulation allows transferring the nonlinearity of the system from microscale to the mesoscale via non-stationary effective parameters. Their values at each cell and time step are in the range of zero to the mean value of the parameter at microscale. The stochastic simulations showed that the variance of the estimated effective parameters decreases when the ratio between mesoscale cell size and correlation length at microscale increases. For a ratio greater than 1, we found cell sizes having the characteristics of a representative elementary area (REA); in such case, the microscale variability pattern did not affect the system response at mesoscale. © 2011 John Wiley & Sons, Ltd. Source

Canal N.A.,University of Tolima
Zootaxa | Year: 2010

Anastrepha is the most diverse and economically important genus of Tephritidae in the American tropics and many species remain undescribed. Three new species A. acuminata, A. carreroi and A. sinuosa collected from Colombia are described in this paper and six species: A.isolata, A. perdita, A. sororcula, A. montei, A. panamensis and A. lanceola are reported from Colombia for the first time. The Colombian species of Anastrepha are discussed. Copyright © 2010 Magnolia Press. Source

Carvajal-Carmona L.G.,University of Oxford | Carvajal-Carmona L.G.,University of Tolima
Current Opinion in Genetics and Development | Year: 2010

The case for identifying rare, disease-associated germline variants rather than undertaking larger genome-wide association (GWA) studies for common variants is increasingly being advocated. I agree with the importance of identifying rare variation in human disease, but believe more thought needs to be put into the limitations of such enterprises before advocating a dramatic departure from the GWA approach. In this paper, I discuss some of the main challenges in identifying rare disease variants with modest effects in disease, including: the overoptimistic expectations about their effects; the need for very large studies needed to prove, beyond doubt, statistical associations; the problems associated with private variants, including the need for functional studies; the difficulties in prioritisation of candidates for further validation and the issues related to the accurate estimation of the risk associated with individual rare variants. The rare variant approach is very promising, but it remains largely untested in comparison with the proven and successful GWA approach. Both strategies must continue to be pursued in parallel and their advantages and pitfalls must be considered without excessive scepticism or expectation. © 2010 Elsevier Ltd. Source

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