Universidad Tecnológica de Bolivar UTB (Colombia): últimos ingresos
Mostrando ítems 2921-2940 de 11668
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Biocontrol of Phytophthora root and stem rot disease in papaya (Carica papaya) plants by Photorhabdus, the symbiont bacterium of Heterorhabditis amazonensis
(Springer Netherlands, 2019)The effect of two strains of Photorhabdus spp. from Heterorhabditis amazonensis and their metabolites was tested against Phytophthora in laboratory conditions and in planta using papaya plants. The in vitro experiments ... -
Relational Agreement Measures for Similarity Searching of Cheminformatic Data Sets
(Institute of Electrical and Electronics Engineers Inc., 2016)Research on similarity searching of cheminformatic data sets has been focused on similarity measures using fingerprints. However, nominal scales are the least informative of all metric scales, increasing the tied similarity ... -
α-bandlimited diffuser in fractional Fourier optics
(SPIE, 2016)We propose a method for calculating appropriate α-band limited diffusers using the fractional Fourier transform. In order to do this, we implement a method for performing a numerical interpolation in the fractional Fourier ... -
Generalized molecular descriptors derived from event-based discrete derivative
(Bentham Science Publishers B.V., 2016)In the present study, a generalized approach for molecular structure characterization is introduced, based on the relation frequency matrix (F) representation of the molecular graph and the subsequent calculation of the ... -
Visual servoing of a five-bar linkage mechanism
(Institute of Electrical and Electronics Engineers Inc., 2015)This paper presents a position-based visual servoing system with fixed camera to control the position of a five-bar linkage mechanism. The document records the goals set, the used methods, the obstacles encountered, the ... -
ISeeU: Visually interpretable deep learning for mortality prediction inside the ICU
(Academic Press Inc., 2019)To improve the performance of Intensive Care Units (ICUs), the field of bio-statistics has developed scores which try to predict the likelihood of negative outcomes. These help evaluate the effectiveness of treatments and ... -
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 ... -
A machine learning model for occupancy rates and demand forecasting in the hospitality industry
(Springer Verlag, 2016)Occupancy rate forecasting is a very important step in the decision-making process of hotel planners and managers. Popular strategies as Revenue Management feature forecasting as a vital activity for dynamic pricing, and ... -
A machine learning model for triage in lean pediatric emergency departments
(Springer Verlag, 2016)High demand periods and under-staffing due to financial constraints cause Emergency Departments (EDs) to frequently exhibit over-crowding and slow response times to provide adequate patient care. In response, Lean Thinking ... -
Machine learning models for early dengue severity prediction
(Springer Verlag, 2016)Infection by dengue-virus is prevalent and a public health issue in tropical countries worldwide. Also, in developing nations, child populations remain at risk of adverse events following an infection by dengue virus, as ... -
Motion of test particles in the field of a naked singularity
(American Physical Society, 2016)We investigate the motion of test particles in the gravitational field of a static naked singularity generated by a mass distribution with a quadrupole moment. We use the quadrupole metric (q metric) which is the simplest ... -
Linear model to estimate the degradation index on the processing of recycled polypropylene due to the addition of stabilizer
(Universidad de Tarapaca, 2016)In the present research work, a lineal model to estimate the Processing Degradation Index (PDI) of polypropylene from recycled industrial waste and municipal solid waste is presented. According to the previous thing an ... -
On the computation of LFSR characteristic polynomials for built-in deterministic test pattern generation
(IEEE Computer Society, 2016)In built-in test pattern generation and test set compression, an LFSR is usually employed as the on-chip generator with an arbitrarily selected characteristic polynomial of degree equal, according to a popular rule, to ... -
Exergy study of air-conditioned space of a prototype scale of a river vessel room
(American Society of Mechanical Engineers (ASME), 2016)The study was conducted on a scale prototype, which simulates one of the rooms in the real vessel air conditioning system. The main results are as follows: the higher the thermal load, the higher the exergy destruction, ... -
Corrosion failure assessment on AISI 310s steel used as support of refractory concrete panels in a clinker cooler
(Universidad Simon Bolivar, 2016)This article presents the corrosion failure assessment on AISI 310 Steel, used as support of refractory concrete panels in a Clinker cooler under a combination of high temperatures and atmospheres with high concentration ... -
3-webs with singularities
(Maik Nauka-Interperiodica Publishing, 2016)A 3-web with singularities is an ordered collection of three one-dimensional distributions L1, L2, L3 on a 2-dimensional manifold M. The subset Σ ⊂ M where these distributions are not pairwise transversal is called the ... -
Test particles in a magnetized conformastatic spacetime
(American Physical Society, 2016)A class of exact conformastatic solutions of the Einstein-Maxwell field equations is presented in which the gravitational and electromagnetic potentials are completely determined by a harmonic function. We derive the ... -
Umbilical cord and preeclampsia
(IOS Press, 2016)Preeclampsia is associated with abnormalities in the umbilical cord in several ways: morphological, biochemical and functional. Alteration in blood vessels of the placenta, decidua and circulatory system of the fetus might ... -
Experimental investigation of high-speed melt spinning by means of digital image analysis
(OSA - The Optical Society, 2016)We carry out an experimental characterization via high-speed camera of Chill-Block Melt Spinning process by means of digital optical flow for melt ejection velocity calculation and temperature measurement. © OSA 2016. -
Diffuser in Fractional Fourier Optics
(OSA - The Optical Society, 2016)We propose a method for calculating a bandlimited diffuser with smooth spectrum in the Fresnel domain without any 2p phase ambiguities using the fractional Fourier transform. Such diffusers are necessary to avoid problems ...