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The origin of Humboldt and Bonpland's holotype of Oncidium ornithorhynchum, clarified using +200-year-old DNA
(John Wiley and Sons Inc., 2019)
Oncidium ornithorhynchum, an epiphytic orchid characterized by erect, pyramidal inflorescences and small yellow flowers, is found in the northern Andes. However, according to the protologue, the type was collected in Mexico ...
Alternatives for recovering the ecosystem services and resilience of the Salamanca Island Natural Park, Colombia
(2020-05-25)
From a comprehensive diagnosis of the associated basins, islands, and wetlands of the coastal lagoon system of Ciénaga Grande de Santa Marta, Colombia, this work describes feasible options for the recovery of its ecosystem’s ...
The early retirement of newscasts women presenters in Colombia and Spain: The repudiation of female old age
(Universidad Complutense de Madrid, 2019)
The actual television, as a mass communication based on public image, maintains a series of sexual stereotypes that are also transmitted in the newscasts. In the following research article, a cross-cultural gender study ...
On the efficiency in electrical networks with ac and dc operation technologies: A comparative study at the distribution stage
(2020-08-20)
This research deals with the efficiency comparison between AC and DC distribution networks that can provide electricity to rural and urban areas from the point of view of grid energy losses and greenhouse gas emissions ...
Second-order cone approximation for voltage stability analysis in direct-current networks
(2020-09-24)
In this study, the voltage stability margin for direct current (DC) networks in the presence of constant power loads is analyzed using a proposed convex mathematical reformulation. This convex model is developed by employing ...
Predictive Analysis and Data Visualization Approach for Decision Processes in Marketing Strategies: A Case of Study
(2020-10-08)
In this paper, we perform a new strategy for recommender systems in online entertainment platforms. As a case of study, we analyzed the reading preferences based on users of Goodreads, a social network for readers, to ...
Light-induced control of the spin distribution on Cu–dithiolene complexes: A correlated ab initio study
(MDPI AG, 2019)
Metal dithiolene complexes—M(dmit)2—are key building blocks for magnetic, conducting, and optical molecular materials, with singular electronic structures resulting from the mixing of the metal and dmit ligand orbitals. ...
Perchlorate-Reducing Bacteria from Hypersaline Soils of the Colombian Caribbean
(Hindawi Limited, 2019)
Perchlorate (ClO 4 - ) has several industrial applications and is frequently detected in environmental matrices at relevant concentrations to human health. Currently, perchlorate-degrading bacteria are promising strategies ...
Assessing the significance of the correlation between the components of a bivariate Gaussian random field
(John Wiley and Sons Ltd, 2015)
Assessing the significance of the correlation between the components of a bivariate random field is of great interest in the analysis of spatial data. This problem has been addressed in the literature using suitable ...
Early prediction of severe maternal morbidity using machine learning techniques
(Springer Verlag, 2016)
Severe Maternal Morbidity is a public health issue. It may occur during pregnancy, delivery, or puerperium due to conditions (hypertensive disorders, hemorrhages, infections and others) that put in risk the women’s or ...
Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.