Tesis de Grado
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Integra las tesis derivadas de estudios de maestría y doctorado.
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Ítem 15 bocetos musicales : estrategia de aprendizaje para interpretar tres secciones de años de peregrinaje de Frank Liszt(Universidad EAFIT, 2023) Henao Ramírez, Daniel; Gil Araque, Fernando AntonioÍtem 16 Valsas para Fagote solo de Francisco Mignone: análisis ecléctico para la interpretación(Universidad EAFIT, 2015) García Estrada, Ana María; Yépes Londoño, Gustavo AdolfoÍtem $2.6BN marriage of Ebay and Skype ended in divorce(Universidad EAFIT, 2019) Zuluaga Arbeláez, Juan Sebastián; Gaitán Riaño, Sandra ConstanzaeBay acquired Skype for $2.6 billion in 2005, which was a very high price compared to Skypes revenues of only $7 million. The acquisition was meant to boost eBay’s revenues, by making it more convenient for buyers and sellers to communicate on the auction platform. Shared benefits were seen to increase the number of users for Skype and enhance the features available for eBay users within its platform. Unfortunately for eBay, their customers did not find any use for Skype’s technology, which was initially intended to connect sellers and buyers quicker and make communication easier. After years of trying, the acquisition led to a write-down of the value of Skype in eBay’s books and finally (and luckily for eBay) led to a sale to Microsoft. Microsoft acquired Skype and created its division within the company that reported directly to Microsoft’s CEO. The company has adopted a passive stance to materialize the synergies while being conservative of Skype strategy, brand, and user experience. Different independent sources categorize this deal as a success. Our analysis highlights the approach Microsoft took for the governance of the collaboration and how it was adapted to the sources of potential joint value and the major capabilities of Skype business model and competitive position.Ítem 40 años de reformas al Estado en Colombia : una mirada al diseño de las políticas de reforma al Estado colombiano(Universidad EAFIT, 2021) García García, Juan Mauricio; Leyva Botero, SantiagoÍtem 50 años de gerencia tecnocrática de los ingenieros de la Escuela de Minas de Medellín en las empresas de servicios públicos en Medellín 1920-1970(Universidad EAFIT, 2014) González Salazar, Natalia; López Díez, Juan CarlosÍtem A call for research on soft-skills in international entrepreneurs : a systematic literature review(Universidad EAFIT, 2022) Zuluaga Quintero, Estefanía; Román Calderón, Juan PabloÍtem A case study on scheduling university timetables using a three-phase matheuristic(Universidad EAFIT, 2022) Rodríguez Garzón, Camilo Andrés; Rivera, Juan CarlosÍtem A Class of Conservative Lagrangian-Eulerian Methods on Triangular Grids for Hyperbolic Problems : Design, Analysis and Applications(Universidad EAFIT, 2024) Agudelo Quiceno, Jorge Eliécer; Pérez Sepúlveda, John Alexander; Cano Sánchez, José AlbeiroIn this thesis, we construct, analyze and implement a class of fully-discrete and semi-discrete schemes on triangular grids intended to numerically solve initial value problems involving multidimensional hyperbolic conservation and balance laws, both scalar and systems. The construction of this novel class of schemes is based on the no-flow surface/curve concept and introduces an effective class of numerical fluxes that do not require constructing or evaluating the Jacobian matrix of the respective flux functions. The implementation of the new fully-discrete and semi-discrete Lagrangian-Eulerian schemes, , in the solution of nontrivial scalar and systems problems, is performed using a weak CFL-type stability condition that is independent of the eigenvalues (exact and approximate values) of the relevant Jacobian of the numerical flux functions, and without the need for high-resolution reconstruction procedures.Ítem A comparative study of the hydrodynamic performance of planing boats through experimental and statistical approaches(Universidad EAFIT, 2021) Giraldo Pérez, Erick Santiago; Osorio Gómez, GilbertoÍtem A comparison of wage dynamics in two Latin American countries: different policies, different outcomes(Universidad EAFIT, 2017) Carvajal Osorio, Luis Carlos; Canavire Bacarreza, Gustavo JavierThis article explores the variations in the wage distribution in two Latin American countries, Bolivia and Colombia, which have had different economic policies in recent years -- Using data from household surveys, a decomposition of the wage distribution in each country using Functional Principal Component Analysis is conducted -- The results suggest that Bolivia, which has taken left-wing economic policies, has experienced a general increase in wages, especially benefiting the least skilled workers and the informal sector -- On the other hand, the wage distribution in Colombia, whose economic policy has been focused on free-market principles, has become more concentrated around the median wage, mainly due to changes in the formal sector wagesÍtem A Dynamic Approach to Modeling Count Data Based on Intensity Functions of Non-Homogeneous Poisson Processes and Functional Data Techniques(Universidad EAFIT, 2024) Chavarría Serna, Juan Esteban; Ortiz Arias, Santiago; Velasco, HenryÍtem A Fixed Grid method for hyperelastic models in large strain analysis using the level set method(Universidad EAFIT, 2014) Ramírez Benítez, William Alberto; García Ruíz, Manuel JulioA Fixed Grid Finite Element Method (FGFEM) in addition to a Mooney-Rivlin hyperelastic model is introduced. This method uses the mixed finite element formulation to treat the elements, but classifying these in a fixed cartesian grid that is superimposed over the model geometry -- In order to do this, the boundary tracking is achieved by solving the level set equation -- A numerical extrapolation of the displacement field from the solid domain to the entire fixed grid domain is done -- The system of equations are solved by the use of an incremental Newton-Raphson scheme -- Finally, some numerical examples are implemented and good convergence results are obtained for the displacement field, showing that FGFEM for the hyperelastic model is suitable for mechanical problems undergoing large strains and large displacementsÍtem A framework for Rapid Product Development based on digital techniques : an industrial case study of ceramic-based product(Universidad EAFIT, 2023) Trujillo Ángel, Luis Alfonso; Rodríguez Arroyave, Carlos ArturoÍtem A Fuzzy ELECTRE method with k-means clustering to qualitative characterize provision factors(Universidad EAFIT, 2023) Pérez Muñoz, Natalia; García Suaza, Carlos Daniel; Peña Palacio, Juan AlejandroÍtem A high-performance hybrid agent-based model for simulating urban vector-borne disease transmission(Universidad EAFIT, 2024) Londoño Montoya, Luisa Fernanda; Escudero Marín, Paula Alejandra; Escudero Marín, Paula AlejandraÍtem A logistic process immaturity model proposal(Universidad EAFIT, 2020) Márquez Gutiérrez, Mateo; Carmona González, Guillermo León; Castro Zuluaga, Carlos Alberto; Carmona González, Guillermo León; Castro Zuluaga, Carlos AlbertoÍtem A Multivariate Outlier Detection Methodology Based on S-Orthogonal DOBIN Projections(Universidad EAFIT, 2024) Cano Campiño, Andrés Mauricio; Ortiz Arias, SantiagoÍtem A new segmentation approach using dynamic variables on individuals(Universidad EAFIT, 2021) Prieto Escobar, Nicolás; Laniado Rodas, Henry; Monroy Osorio, Juan CarlosÍtem A new way for learning languages through virtual inmmersive environments(Universidad EAFIT, 2012) Torres Arias, Diego Mauricio; Treftz, HelmuthImmersive virtual environments or metaverse are representations of real or imaginative worlds created on the digital world with the purpose of making real situations or impossible experiences in the real world -- Users on these worlds represent themselves via avatars that interact in representation of the user. At present, these virtual worlds are used for business processes, research and education -- The purpose of this article is to describe the process of adapting an immersive virtual environment to be used as a virtual teaching-learning tool of the English language as a second language -- The immersive virtual world was tested in a learning environment, and the results of the evaluation is presented -- This research started with the identification of the adequate immersive platform, students group selection, test design and implementation in order to determining if it is more successful to teach over a virtual immersive environment or in the real classroom -- We proposed the hypothesis : “the Second Life tool is, at least, as effective in teaching a second language, in this case English, in A2 level students in the Common European Framework as the face-to-face mode.” and in order to validate it, a set of experiments were conducted -- Different measures of results were given comparing the performance of an experimental group against a control group -- The results of the experiments show that the experimental, using the virtual environment, has better improvement compared to the control group -- These results indicate that virtual immersive environments are efficient tools, useful in teaching-learning language processesÍtem A Novel Injectable Piezoelectric Hydrogel for Periodontal Disease Treatment.(Universidad EAFIT, 2023) Roldán Lopera, Lina María; Correa Vélez, Santiago AlbertoPeriodontal disease is a multifactorial, bacterially induced inflammatory condition characterized by the progressive destruction of periodontal tissues. The successful nonsurgical treatment of periodontitis requires multifunctional technologies offering antibacterial therapies and promotion of bone regeneration simultaneously. For the first time, in this study, an injectable piezoelectric hydrogel (PiezoGEL) was developed after combining gelatin methacryloyl (GelMA) with biocompatible piezoelectric fillers of barium titanate (BTO) that produce electrical charges when stimulated by biomechanical vibrations (e.g., mastication, movements). We harnessed the benefits of hydrogels (injectable, light curable, conforms to pocket spaces, biocompatible) with the bioactive effects of piezoelectric charges. A thorough biomaterial characterization confirmed piezoelectric fillers' successful integration with the hydrogel, photopolymerizability, injectability for clinical use, and electrical charge generation to enable bioactive effects (antibacterial and bone tissue regeneration). PiezoGEL showed significant reductions in pathogenic biofilm biomass (∼41%), metabolic activity (∼75%), and the number of viable cells (∼2-3 log) compared to hydrogels without BTO fillers in vitro. Molecular analysis related the antibacterial effects to be associated with reduced cell adhesion (downregulation of porP and fimA) and increased oxidative stress (upregulation of oxyR) genes. Moreover, PiezoGEL significantly enhanced bone marrow stem cell (BMSC) viability and osteogenic differentiation by upregulating RUNX2, COL1A1, and ALP. In vivo, PiezoGEL effectively reduced periodontal inflammation and increased bone tissue regeneration compared to control groups in a mice model. Findings from this study suggest PiezoGEL to be a promising and novel therapeutic candidate for the treatment of periodontal disease nonsurgically.