Buscador de Tesis y publicaciones académicas

Learning, memory, and belonging: how older adults use conversational AI beyond information seeking

Jefferson Enrique Arias Gomez · José Isaías Salas Hernández · Andrés Chiappe · Javier Mella-Norambuena

Residual-Certified Numerical Modeling of Fractional Nonlinear Dynamical Systems: Quadrature, Collocation and Error Verification

Alvaro H. Salas

Fractional nonlinear dynamical systems provide a flexible framework for modeling processes with memory, hereditary effects, anomalous dissipation, and nonlocal temporal response. Their numerical simulation is more delicate than that of classical ordinary differential equations because fractional derivatives involve wea...

Análisis paramétrico de bobinas espirales EMAT mediante simulaciones multifísicas en COMSOL

Miguel Angel Rios Tarazona · Jhon Jairo Padilla Aguilar · Sandra Johana Benítez Muñoz · Luis Ángel Silva · y 3 más

Este trabajo presenta un análisis paramétrico de transductores acústicos electromagnéticos (EMAT) de bobina en espiral mediante simulaciones multifísicas en COMSOL Multiphysics. El modelo integra una bobina en espiral, un imán permanente y una placa conductora de ensayo y se resuelve en un dominio bidimensional plano e...

Percepciones sobre la Socialización en la Educación en Casa: Un Estudio Cualitativo con Jóvenes y Familias en Colombia

Oscar Alberto Rojas Martínez · Manuel Losada Sierra

La escuela se ha considerado tradicionalmente el principal espacio de socialización de niños y jóvenes, al propiciar la construcción de relaciones con sus pares. En Colombia, el creciente número de familias que optan por la educación en casa ha suscitado interrogantes sobre las implicaciones de esta modalidad para el p...

Satellite-Based Daily Precipitation Bias Correction in a Tropical Mountainous Region Using Functional Generalized Additive Mixed Models: A Case Study in Valle del Cauca, Colombia

David Arango-Londoño · Delia Ortega-Lenis · Mauricio A. Mazo-Lopera · Johan Steven Aparicio · y 2 más

Accurate correction of daily satellite-derived precipitation estimates in data-scarce tropical regions remains a critical challenge for climate monitoring, agriculture, and public health. Satellite products such as CHIRPS offer broad spatial coverage but exhibit systematic biases relative to ground-based observations p...

Axis-Constrained Fine Registration for Industrial Inspection Using a Closed-Form Quaternion Solver

Daniel Mejia-Parra · Andres F. Puentes-Atencio · Jairo R. Sanchez · Oscar Ruiz-Salguero

Industrial dimensional inspection relies on accurate registration between scanned point clouds and nominal CAD models to evaluate geometric deviations with respect to engineering datums. Conventional fine registration methods, such as the Iterative Closest Point (ICP) algorithm, minimize global alignment error but may...

Learning to Anticipate: Adult Education, Future Skills, and Anticipatory Governance in Latin America – Evidence From the Colombian Context

Fredy Vargas Lama

Adult learning and lifelong learning (LLL) systems in Latin America face a structural crisis that existing policy frameworks are not equipped to diagnose correctly. This reflection argues that the region suffers a double failure: a diagnostic failure, in which policy responds to symptoms rather than structural drivers;...

Non-invasive radiological study of the urinary system in the 21st Century

Cristian Varela

Digital Engagement in Geopolitical Crises: A Comparative Analysis of Message Attributes on Instagram and X During the Capture of Nicolás Maduro

Edwin Arango Espinal · Paula Andrea López Herrera · Carlos Fernando Osorio-Andrade

This study examines the determinants of digital engagement during geopolitical crises, using the capture of Venezuelan President Nicolás Maduro by U.S. forces on 3 January 2026 as a case study. The aim is to identify which message attributes drive audience interaction and how their effects vary across platforms with di...

Detección de desgaste de herramientas en taladrado con modelos de machine learning acústico por medio de análisis de sensibilidad al umbral de etiquetado

Jorge Enrique Meneses Flórez · Nicolás Orejarena Osorio · Oscar Ivan Ayala Ortiz

Se presenta un sistema de clasificacion ordinal del desgaste de brocas en taladrado CNC de AISI 4140 basado en senales acusticas capturadas con microfonos de bajo costo. Se emplea descomposicion ordinal de Frank-Hall con SVM y RF sobre 10 caracteristicas acusticas seleccionadas estadisticamente. La contribucion central...