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Aspectos mínimos del uso de signos de puntuación en corrección de estilo y proofreading
Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2014-08-27 -
Assessing sustainability within the construction industry by means of a composite indicator
As a result of the Agenda 21, presented nearly two decades ago, the Millennium Development Goals (MDG) were set and must be met by the year 2015. Nowadays, governments, researchers, engineers, environmental scientists and ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2013 -
Assessing the awareness mechanisms of a collaborative programming support system
The learning and teaching of Programming can benefit from the principles of Computer Supported Collaborative Learning (CSCL). With that purpose in mind, the COLLECE system was created to support synchronous collaborative ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2015-09-01 -
Assessing the efficiency of science, technology and innovation using Data Envelopment Analysis (DEA): The case of Colombia
This paper provides insights into how to approach the assessment of scientific production efficiency using Data Envelopment Analysis (DEA). The methods employed in this paper take into account both the CCR and Assurance ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2017-07-01 -
Assessing the performance of a differential evolution algorithm in structural damage detection by varying the objective function
Structural damage detection has become an important research topic in certain segments of the engineering community. These methodologies occasionally formulate an optimization problem by defining an objective function based ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2014-12-15 -
Assessment of evaporative cooling efficiency in greenhouses equiped with wetted porous plates
The main objective of this study was to experimentally validate a mechanistic model for predicting the cooling efficiency (η) of wetted porous plates built with expanded clay. The expanded clay material was physically ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2017-10-01 -
Assessment opportunities for energy efficiency in Ecuadorian road transport
Transport facilitates both economic and social development across the globe. Therefore, mass transportation has increased over time, and fossil fuels have been used discriminately to fulfill the demand in the transportation ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2017-01-01 -
Association of bodily discomfort with occupational risk factors in poultry slaughterhouse workers
Brazil is classified as the second largest world chicken meat producer and leading exporter. This study aimed at analyzing the characteristics of bodily discomfort in poultry slaughterhouse workers, and its associations ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2017-07-01 -
Atenuación de efectos pendulares en grúas-torre usando control por rechazo activo de perturbaciones en tiempo discreto con observador resonante
En este artículo, se propone un esquema de control en tiempo discreto basado en el enfoque del rechazo activo de perturbaciones (ADR) para abordar el problema de control de oscilaciones en la carga de grúas-torre sujetas ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2018-01-01 -
Atmospheric corrosivity in Bogota as a very high-altitude metropolis questions international standards
This paper presents the first systematic atmospheric corrosion assessment in Bogota. Main facts about the study are related with special characteristics of the City, such as population (more than eight million inhabitants), ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2015-03-01 -
Attaining multiple dispatch in widespread object-oriented languages
Multiple dispatch allows determining the actual method to be executed, depending on the dynamic types of its arguments. Although some programming languages provide multiple dispatch, most widespread object-oriented languages ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2014-08-26 -
Aumento en la resistencia a la corrosión de un acero t91 aluminizado
El acero ferrítico T91 ha sido ampliamente utilizado en plantas de generación de energía eléctrica, calderas y plantas nucleares. Sin embargo, su resistencia a la oxidación se ve gravemente afectada a temperaturas superiores ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2011 -
Automated detection of photoreceptors in in-vivo retinal images
The inclusion of adaptive optics (AO) into ophthalmic imaging technology has allowed the study of histological elements of retina in-vivo, such as photoreceptors, retinal pigment epithelium (RPE) cells, retinal nerve fiber ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2016-10-01 -
Automatic construction of nurbs surfaces from unorganized points
Modeling with Non Uniform Rational B-Splines (NURBS) surfaces has become a standard in CAD/CAM systems due to its stability, flexibility, and local modification properties. The advantage of fitting with NURBS surfaces is ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2011 -
Automatic detection of bumblebees using video analysis
In this document, we explore and develop techniques to automatically detect bumblebees flying freely inside a greenhouse, where illumination conditions are left unconstrained, and no artifact is used on their bodies. ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2014-10-23 -
Automatic visual model for classification and measurement of quality of fruit: case mangifera indica l
The physical properties of fruits in the agriculture industry constitute the main information in the quality determination for activities as exportation. This work presents a visual inspection based method for the ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2009 -
Automation and control of a cross-flow micro-filtration plant: application to tropical fruits processing
This paper presents the results of an applied approach to the automation of a micro-filtration plant used for the treatment of tropical fruit juices. Based on the assessment of the operation conditions of the original ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2011 -
Autómata estocástico híbrido y simulación de monte carlo para la predicción de la seguridad de funcionamiento de un sistema dinamico
Un sistema dinámico híbrido es descrito por un conjunto de variables continuas y un conjunto de eventos discretos interactuando mutuamente. Ciertos eventos o variables toman un carácter estocástico. Por tal motivo, se deben ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2011 -
Avance experimental de la ingeniería de postcosecha de frutas colombianas: resistencia mecánica para frutos de uchuva (physalis peruviana l)
Usando técnicas destructivas bajo compresión unidireccional bajo una velocidad de carga constante, las fuerza de fractura y la fuerza de firmeza para frutos de uchuva fueron determinadas. Los resultados indicaron que la ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2008 -
Avances recientes en la predicción de la demanda de electricidad usando modelos no lineales
La predicción de la demanda es un problema de gran importancia para el sector eléctrico, ya que a partir de sus resultados, los agentes del mercado de energía toman las decisiones más adecuadas para su labor. En este ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. 2011
