Buscador de Tesis y publicaciones académicas

TCGA-GBM Radiomic and Clinical Data with Graph-Sparse NMF Analysis Code

Ceballos, Johan · silva, andrea

This repository contains the complete data and source code supporting the manuscript "Graph-Regularized Sparse Non-negative Matrix Factorization for High-Dimensional Brain Radiomics" (Ceballos & Silva Cordero, Universidad Nacional de Colombia, Sede de La Paz). It includes: (1) real radiomic feature data for 102 patient...

BiLSTM with Asymmetric Huber Loss for 24 h PM2.5 Forecasting and Early Exceedance Detection at an Industrial Monitoring Station in Bogotá, Colombia

María Isabel David Otálvaro · Sonia Lucila Meneses Velosa

Fine particulate matter (PM2.5) pollution in Bogotá follows a strongly asymmetric temporal pattern: at the Puente Aranda industrial-corridor monitoring station, 98.7% of days whose daily mean exceeds the WHO 2021 guideline of 15 μg/m3 contain at least one hourly concentration above 25 μg/m3, with a median peak-to-mean...

Aproximación académica a la valoración de bienes históricos y culturales en el sector público: el caso de un edificio universitario

Luis Octavio González Salcedo

The objective of this study is to propose a mixed academic methodology for the valuation of historical and cultural assets that integrates both technical and symbolic criteria, thereby facilitating their institutional and accounting management without constituting an official appraisal. Regarding the methodology, a qua...

Tendencias internacionales en contabilidad del sector público

Mauricio Gómez-Villegas

Public sector accounting has evolved significantly over the past forty years. During this period, several transformations have taken place, including the adoption of accrual accounting through public financial accounting, the articulation of different information systems for public financial management, the implementat...

Carotenoid-enriched endolithic phototrophic communities in Colombian gypsums

Julian. A. Corzo-Acosta · Susana Salazar · Ariel O. Cadena · John E. Cano-Arango

OPTIMIZATION OF CARDIOVASCULAR DIAGNOSIS THROUGH ARTIFICIAL INTELLIGENCE APPLIED TO THORACIC RADIOLOGICAL IMAGES: A SYSTEMATIC REVIEW OF DIAGNOSTIC PERFORMANCE, GENERALISABILITY AND TRANSLATIONAL READINESS

Denisse Andrea Puentes Aguila · Ana Maria Ramírez Isaza · Roxana Rivera Valencia · Valeria Guadalupe de la Cajiga Torres

Background. Cardiovascular disease remains the leading cause of death worldwide, yet risk stratification depends on inputs that are frequently missing in routine care. Chest radiographs and chest computed tomography (CT) are acquired in vast numbers for non-cardiac indications and contain cardiovascular information tha...

La divulgación de riesgos y el perfil del auditor: un estudio aplicado en entidades públicas en Colombia

José Eurípides Rincón Báez · Diego Fernando Católico Segura

Risk disclosure is a central component of transparency and accountability in the public sector, as it helps reduce information asymmetries between public managers and stakeholders. This study analyzes the relationship between disclosure of the institutional risk management map (IRMM) and the auditor profile in 67 Colom...

PATIENT SAFETY MANAGEMENT IN NURSING: TRENDS, CHALLENGES AND OPPORTUNITIES IN THE DEPARTMENT OF CESAR

Rikilda Isabel Rincón Jiménez · Paola Margarita Camargo Mejía · Luz Alba Hurtado Luján · Cielo Esther Hernández Gutiérrez · y 2 más

Cesar, with Valledupar as its main referral center, faces growing pressure on hospital services due to the high healthcare demand of a population of nearly one million inhabitants, characterized by high rurality and gaps in access to specialized services (Ministerio de Salud y Protección Social, 2024). Under these cond...

Nilpotent graphs over skew PBW extensions

Higuera, Sebastián · Reyes, Armando

We study the diameter and girth of nilpotent graphs associated with skew PBW extensions over $2$-primal rings, generalizing similar results on skew polynomial rings. Under certain compatibility conditions, we establish bounds for the diameter of the nilpotent graph and prove invariance of the girth under polynomial ext...

Supporting scripts for the study of Morley's hexagon

Cruz-Ramírez, Miguel · León-Guerrero, Emerson Julián · Nápoles-Valdés, Juan Eduardo

This ZIP archive contains all the code, checkpoints, and execution logs supporting the computational certifications of the research entitled The Optimal Area Bound of Morley's Hexagon, including both the main analytical-numerical approach (certification via adaptive bisection with interval arithmetic) and the independe...