Buscador de Tesis y publicaciones académicas

Investigation of Solution Accuracy in PFEM Simulations Using Benchmark Problems

Antaeus Bettmann · Jan Machaček · Juan M. Rodríguez · Hauke Zachert · y 1 más

ABSTRACT The simulation of large topological changes, such as those occurring in Cone Penetration Testing (CPT) and vibratory pile driving, remains a major challenge in computational geomechanics. Excessive mesh distortions render classical approaches like the Finite Element Method (FEM) unsuitable, emphasizing the nee...

Alternative Lead ECG Placements

José Luis Morales‐Arteaga · Amin Meghdadi · Derek Wu · Abdullah Bhuiyan · y 9 más

ABSTRACT Electrocardiography (ECG) is a critical diagnostic tool for identifying cardiac conditions. While standard lead positions are widely used to ensure diagnostic accuracy, alternative lead placements have been developed to address specific clinical scenarios. These alternative configurations can overcome physical...

A EFICIÊNCIA DA GESTÃO PÚBLICA EM SAÚDE NA COTAÇÃO DE PREÇOS NOS PROCESSOS LICITATÓRIOS: EVIDÊNCIAS DE UM HOSPITAL UNIVERSITÁRIO PÚBLICO FEDERAL (2018–2019)

Izabel Janaina Barbosa da Silva · Warley da Silva Martins · Patrícia Alves Marques Heringer · Dayanne Gonçalves de Miranda · y 1 más

O presente estudo teve como objetivo analisar o impacto da cotação de preços na eficiência dos processos licitatórios realizados em um Hospital Universitário Público Federal, no período de 2018 a agosto de 2019. A pesquisa caracteriza-se como quantitativa, exploratória, transversal e aplicada, apoiando-se também em ref...

Multidimensional Health Profiles in Hospitalized Patients with Mental Disorders: A Cluster Analysis of Cardiovascular Risk, Executive Function, and Emotional Burden

Julia Andrea Arias-Diaz · Brayan Patiño-Palma · Carlos Alberto Hurtado-González · Claudia Marcela Cruz-Delgado · y 2 más

Background: Mental disorders are often associated with a high burden of physical comorbidities, particularly cardiovascular risk factors, which contribute to functional impairment. However, limited evidence exists regarding the multidimensional interaction between cardiovascular risk, cognitive function, and emotional...

Temporal Trends in Reef Fish Diversity and Nutrient Excretion Proxies Across Sites on San Andrés Island, Colombia

Amílcar Leví Cupul-Magaña · Adriana Santos-Martínez · Diana Morales-de-Anda

Long-term monitoring is essential for understanding how recurring disturbances, such as hurricanes and coral bleaching, affect reef fish communities and ecosystem processes. This study evaluates temporal trends (2013–2025) in fish assemblage composition, functional diversity, and nutrient excretion proxies (C, N, and P...

Competencias digitales y barreras para la integración de tic en la postpandemia: un estudio de caso con docentes de Norte de Santander, Colombia

Cesar Augusto Hernandez Suarez · Juan Diego Hernández Albarracín · Javier Rodríguez Moreno

Se presentó un estudio cualitativo con el propósito de comprender en profundidad las percepciones y experiencias de docentes de educación básica y media del departamento de Norte de Santander sobre el marco de competencias TIC del Ministerio de Educación Nacional, en un contexto de acelerada digitalización postpandemia...

Child Maltreatment, Cognitive Development, and Resilience: The Mediating Role of Formal Education

Juan Carlos Caicedo-Mera · Pablo Muñoz · Karlos Luna · Ivonne Steffany Díaz · y 1 más

Copies of $$c_0$$ and $$\ell _\infty $$ in Banach spaces of $$w^*$$-$$w$$-continuous symmetric multilinear maps

Michael A. Rincón-Villamizar · Sergio A. Pérez · Diego J. Reyes-Rojas

Abstract We study copies of the classical sequence spaces $$c_0$$ and $$\ell _\infty $$ in spaces of $$w^*$$ - $$w$$ continuous symmetric n -linear mappings. More precisely, we consider the Banach space $$\mathcal {L}_{w^*s}(^n X^*, Y)$$ of all $$w^*$$ - $$w$$ continuous symmetric n -linear mappings from $$X^*$$ into Y...

Semi-Controlled Fermentation of Coffee by the Addition of Commercial Lactic Acid Bacteria and Yeast at a Smallholder Capacity

Karen-Dayana Calderón-Gaviria · Luisa-Fernanda Duque-Buitrago · Laura-Sofia Torres-Valenzuela · Martha-Isabel Sánchez-Tamayo · y 1 más

Microstructural $$\eta$$: chemical–mechanical bridge for anchorage design in alkali–activated concretes

Robinson Rúa-Patiño · Ary A. Hoyos-Montilla · Jorge I. Tobón

Abstract The anchor design for Low-Carbon Concretes still lacks parameters that link microchemistry to structural performance. This work introduces a microstructural coefficient $$\eta$$ η , defined from gel density and interfacial porosity of the N-A - S-H / C - A - S-H networks, to extend the classical Tepfers. The a...