Browsing Productos de investigación by Title
Now showing items 428-447 of 796
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Large scale integration of renewable energy sources (RES) in the future Colombian energy system
(Elsevier Ltd, 2019)The diversification of the energy matrix, including larger shares of Renewable Energy Sources (RES), is a significant part of the Colombian energy strategy towards a sustainable and more secure energy system. Historically, ... -
Latencies in power systems: A database-based time-delay compensation for memory controllers
(Cartagena de Indias, 2021-01-18)Time-delay is inherent to communications schemes in power systems, and in a closed loop strategy the presence of latencies increases inter-area oscillations and security problems in tie-lines. Recently, Wide Area Measurement ... -
Learning styles for algebra concepts: The case of engineering students at the Universidad de Santander (Valledupar, Colombia)
(Cartagena de Indias, 2019)The objective of this research was to evaluate the learning styles for algebra concepts of the students of the industrial engineering program of the University of Santander, Valledupar, Cesar, Colombia. A descriptive study ... -
Leveraging 1-wire communication bus system for secure home automation
(Springer Verlag, 2017)Home automation is a rising technology that is available to anyone thanks to the reduce cost of the embedded systems. Since the appearance of different products to create your own domotic system, and the recent popularity ... -
Leveraging Emergency Response System Using the Internet of Things. A Preliminary Approach
(Cartagena de Indias, 2020-12-25)The Internet of Things (IoT) is a new paradigm that is arising in all areas of technology, finding novel applications every day that can improve many aspects of people’s lives. Several applications using IoT have been ... -
Leveraging speculative architectures for runtime program validation
(2013)Program execution can be tampered with by malicious attackers through exploiting software vulnerabilities. Changing the program behavior by compromising control data and decision data has become the most serious threat in ... -
LFSR characteristic polynomial and phase shifter computation for two-dimensional test set generation
(Institute of Electrical and Electronics Engineers Inc., 2017)In built-in two-dimensional deterministic test pattern generation, a Linear Feedback Shift Register (LFSR) extended by phase shifters (PS) is commonly used for generating the test patterns. The specific LFSR/PS structure ... -
Libertad y oportunidad. Consideraciones sobre justicia distributiva en Amartya Sen y Philippe Van Parijs.
(Cartagena de Indias, 2020-08-06)El presente ensayo tiene como propósito una aproximación a las concepciones de la justicia distributiva en dos economistas contemporáneos: Amartya Sen y Philippe Van Parijs. Para tal fin, se aborda de forma transversal la ... -
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. ... -
Lineamientos de estimación de costos para proyectos privados arquitectónicos, con base en un modelo de clasificación único
(Cartagena de Indias, 2020)El presente trabajo de investigación muestra una propuesta de pautas de estimación de costos para proyectos arquitectónicos privados en Colombia. Basado en la teoría de que un modelo de clasificación permite desarrollos ... -
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 ... -
Linear power flow formulation for low-voltage DC power grids
(Elsevier Ltd, 2018)This paper presents a reformulation of the power flow problem in low-voltage dc (LVDC) power grids via Taylor's series expansion. The solution of the original nonlinear quadratic model is achieved with this proposed ... -
Location of FACTS Devices in Power Systems: Application to the IEEE 9 bus System
(Institute of Electrical and Electronics Engineers Inc., 2019)This paper proposes a methodology to find the location of a flexible transmission system in AC in a power system, based on a nodal order and the analysis of repetitive power flows. To check the proposed methodology, the ... -
Logistic regression models for predicting daily airborne Alternaria and Cladosporium concentration levels in Catalonia (NE Spain)
(Springer New York LLC, 2019)Alternaria and Cladosporium are the most common airborne fungal spores responsible for health problems, as well as for crop pathologies. The study of their behavior in the air is a necessary step for establishing control ... -
LoRAWAN network coverage testing design using open-source low-cost hardware
(Cartagena de Indias, 2020-12-01)The Internet of Things (IoT) is considered to be one of the most radical technological advances of the century. The increasing amount of applications and devices, requires the deployment of a large network infrastructure ... -
LQR-Based adaptive virtual inertia for grid integration of wind energy conversion system based on synchronverter model
(Cartagena de Indias, 2021-03-06)This paper proposes adaptive virtual inertia for the synchronverter model implemented in a wind turbine generator system integrated into the grid through a back-to-back converter. A linear dynamic system is developed for ... -
LRemoving Dust Artifacts in Retinal Images via Dictionary Learning and Sparse-Based Inpainting
(Institute of Electrical and Electronics Engineers Inc., 2019)In the field of ophthalmology, retinal images are essential for the diagnosis of many diseases. These images are acquired with a device called the retinal camera. However, often small dust particles in the sensor produce ... -
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 ... -
Male facial anthropometry and attractiveness
(2012)The symmetry and masculinity of the face are often considered important elements of male facial attractiveness. However, facial preferences are rarely studied on natural faces. We studied the effect of these traits and ... -
Manifestaciones clínicas de la Insensibilidad congénita al dolor con anhidrosis
(Cartagena de Indias, 2019-02-03)La insensibilidad congénita al dolor con anhidrosis (HSAN-IV o CIPA) es una enfermedad rara con sintomatología multisistémica, que impacta el funcionamiento cognitivo, afectando negativamente la calidad de vida los pacientes ...
