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https://hdl.handle.net/10784/28108

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Cartografía de la Diversidad Geo-Bio-Cultural de la Cuenca del Río Ranchería: Integración del Saber Indígena y la Ciencia para la Resiliencia Climática en La Guajira, Colombia
(2025) González-Tejada, Catalina; Marín-Cerón, Maria Isabel; Romero Epiayu, Jazmin; Villazón-Lobo, Karen Cecilia; Ospina-Garcés, Sandra; Delgado-Sánchez, Marisol
Diplomacia Científica para la Planificación Territorial Sostenible en La Guajira: Fortaleciendo la Diversidad Geo-Bio-Cultural en la Cuenca del Ranchería, Guajira, Colombia
(2025) Marín Cerón, Maria Isabel; Romero Epiayu, Jazmin; González Tejada, Catalina; Villazón, Karen Cecilia; Delgado Sánchez, Marisol
Gendered Geoscience for Territorial Sustainability: Integrating Geodiversity, Community Knowledge, and Acoustic Biodiversity in La Guajira
(LACCEI, 2025) González-Tejada, Catalina; Marín-Cerón, Maria Isabel; Romero Epiayu, Jazmin; Villazón-Lobo, Karen Cecilia; Ospina-Garcés, Sandra; Delgado-Sánchez, Marisol; Gutiérrez Romero, Genesis
This paper presents the outcomes of a research and innovation initiative developed within the Orquídeas Postdoctoral Program, promoted by the Ministry of Science, Technology, and Innovation of Colombia. The project was led by a female group: a postdoctoral fellow, a young researcher, a senior scientist, and a science communication manager from the School of Applied Sciences and Engineering at Universidad EAFIT, in close collaboration with a leader from the Fundación Movimiento Feminista Niñas y Mujeres Wayuu (MFNMW). Together, we co designed and implemented a territorial exploration framework that bridges scientific methods with ancestral wisdom, with a strong emphasis on gender equity, intercultural dialogue, and sustainable landscape management. The study focuses on geodiversity and morphometric diversity in La Guajira, a region of exceptional geological and cultural value. We identified 30 Sites of Geological Interest (SGIs) through integrated GIS analysis, field validation, and participatory mapping. Our findings indicate a strong correlation between morphometric and geological diversity, influenced by the structural dynamics of the Oca and Cuisa faults and the hydrological role of the Ranchería River. The initiative emphasizes intergenerational learning, the leadership of women in geosciences, and the contributions of local communities, especially Wayuu women, to sustainable resource governance. It aligns with Colombia’s national science missions in Bioeconomy and Territory, Science for Peace, and the Human Right to Food, and incorporates acoustic biodiversity related to bats as indicators of ecosystem health.
Co-construcción del Calendario Wayuu: Una Estrategia Comunitaria para la Acción Climática y la Resiliencia
(2025) Romero Epiayu, Jazmin; González Tejada, Catalina; Villazón, Karen Cecilia; Marín Cerón, Maria Isabel
A dialogue between spiritual knowledge and geo-social sciences for other understandings of climate change at the Rancheria River Bassin, Colombia
(2025) González-Tejada, Catalina; Marín-Cerón, Maria Isabel; Romero Epiayu, Jazmin; Villazón-Lobo, Karen Cecilia
Geodiversidad en la Guajira, Colombia
(Universidad EAFIT, 2025) Proyecto Orquideas Mujeres en la Ciencia n948: Tejedoras de la sostenibilidad en la Guajira bio-geo-culturalmente diversa
Integrating computation into a civil engineering curriculum instructions at a colombian higher education institution
(Research in Engineering Education Network, 2019-01-01) Vieira C.; Gomez J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
This paper presents a work in progress to integrate computation across the civil engineering curriculum at a Colombian University. Engineering programs all around the world have started to realize the value of preparing the future professionals with the knowledge and skills to solve complex problems using computational tools and methods such as modeling and simulation. The paper describes the challenges the institution is facing with these courses, propose an instructional approach to support student learning, and presents a preliminary data analysis for the adaptation of an instrument that will allow to assess students'self-beliefs about computing in the context of this curricular innovation. Copyright © 2019 Camilo Vieira and Juan Gomez.
Dynamic measurements on a Kaplan turbine: Model - Prototype comparison
(Institute of Physics Publishing, 2019-01-01) Angulo M.; Lucino C.; Botero F.; Rivetti A.; Liscia S.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
The purpose of this paper is to validate in prototype, the results related to the description of dynamic behaviour obtained in a Kaplan turbine model. A comparative analysis between model and prototype measurement at homologous operation conditions is presented. The phenomena of interest are tip vortex cavitation development and rotor stator interaction (rsi), associated to operation at high power outputs. The selection of suitable signal processing tools allows a clear identification of the role played by the modulation of the main rsi frequencies on cavitation phenomena. The comparison between pressure acceleration measurements on model and prototype at draft tube wall are consistent, both in time and frequency domain analysis. The acceleration measurement at the draft tube wall (manhole) is suggested as a trustworthy dynamic indicator for prediction (model) and monitoring (prototype) purposes. © 2019 Published under licence by IOP Publishing Ltd.
Simple-1: Development stage of the data transmission system for a solid propellant mid-power rocket model
(IOP PUBLISHING LTD, 2017-01-01) Yarce A.; Sebastián Rodríguez J.; Galvez J.; Gómez A.; García M.J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
This paper presents the development stage of a communication module for a solid propellant mid-power rocket model. The communication module was named. Simple-1 and this work considers its design, construction and testing. A rocket model Estes Ventris Series Pro II® was modified to introduce, on the top of the payload, several sensors in a CanSat form factor. The Printed Circuit Board (PCB) was designed and fabricated from Commercial Off The Shelf (COTS) components and assembled in a cylindrical rack structure similar to this small format satellite concept. The sensors data was processed using one Arduino Mini and transmitted using a radio module to a Software Defined Radio (SDR) HackRF based platform on the ground station. The Simple-1 was tested using a drone in successive releases, reaching altitudes from 200 to 300 meters. Different kind of data, in terms of altitude, position, atmospheric pressure and vehicle temperature were successfully measured, making possible the progress to a next stage of launching and analysis. © Published under licence by IOP Publishing Ltd.
Low altitude wind simulation over Mount Saint Helens using NASA SRTM digital terrain model
(IEEE COMPUTER SOC, 2007-01-01) Garcia, M. J.; Boulanger, P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
On February 11, 2000, the Shuttle Radar Topography Mission (SRTM) was launched into space as part of one of the payload of the Shuttle Endeavor Using a new radar sweeping technique most of the Earth's surfaces was digitized in 3D in approximately 10 days. SRTM acquired enough data during its mission to obtain a near-global high-resolution database of the Earth's topography. This paper describe how this revolutionary data set can be used to simulate anywhere around the Earth low altitude wind conditions for various atmospheric conditions. More specifically, we will describe the various processing steps necessary to convert this high-resolution terrain model provided by the SRTM database into a Computational Fluid Dynamic (CFD) volumetric mesh that is compatible with an open source CFD solver called OpenFOAM running in parallel on large West-Grid supercomputers. This work is the result of a new virtual wind-tunnel under development at the University of Alberta. In the paper, we present wind flow over the Mount-Saint Helens in the United States for a simple wind flow boundary condition.
Design, construction and testing of a data transmission system for a mid-power rocket model
(IEEE Computer Society, 2017-01-01) Botero, A.Y.; Rodríguez, J.S.; Serna, J.G.; Gómez, A.; García, M.J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
This paper presents the continuation of a previous work in the development of a communication module for a solid propellant mid-power rocket model named "Simple-1" mission. It considered the design, construction, and testing procedures related to the data transmission protocol and its data rate. The current phase considers the antenna's optimization, launching, and data analysis on-flight. In the actual optimization step, the antenna components were modified to increase the gain. A rocket model Estes Ventris Series Pro II® was used to carry in the payload section a communication module with several sensors in a CanSat form factor. The collected data was processed using an Arduino Mini micro-controller and transmitted using a radio module (Radiometrix) to a software defined radio (SDR) HackRF-based platform on the ground station. The printed circuit boards (PCBs) were designed and manufactured from commercial off the shelf (COTS) and assembled in a cylindrical rack structure similar to this small format satellite concept. The Simple-1 was tested with the help of a wind tunnel to validate the behavior of the antenna's subsystem and was proved in several launches using solid propellant motors reaching altitudes from 500-700 meters. Different experimental data such as altitude, position, atmospheric pressure, and vehicle temperature were successfully captured and analyzed. This demonstrates that it is possible to develop low cost near space activities, gradually installing capabilities in a teamwork. In this developing stage, the techniques to design and manufacture two layers PCB were appropriated by traditional circuit board etching methods. In addition, the SDR technology was studied and implemented for the telemetry architecture. The use of surface mounting devices (SMD) offers an alternative to reduce the volume of the module. In the future, it is expected to have more advances in the stability of the communication protocols, robust hardware manufacturing, and integration of electronic circuits in four-layer PCB, in order to contribute to the access to space in our region and local aerospace industry developments. © 2017 IEEE.
Multi-modal interface for a real-time CFD solver
(2007-01-01) Kasakevich, M.; Boulanger, P.; Bischof, W.F.; Garcia, M.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
Advances in computer processing power and networking over the past few years have brought significant changes to the modeling and simulation of complex phenomena. Problems that formerly could only be tackled in batch mode, with their results visualized afterwards, can now be monitored whilst in progress using graphical means. In certain cases, it is even possible to alter parameters of the computation whilst it is running, depending on what the scientist perceives in the current visual output. This ability to monitor and change parameters of the computational process at any time and from anywhere is called computational steering. Combining this capability with advanced multi-modal tools to explore the data produced by these systems are key to our approach. In this paper, we present an advanced multi-modal interface where sonification and 3D visualization are used in a computational steering environment specialized to solve real-time Computational Fluid Dynamics (CFD) problems. More specifically, this paper describes how sonification of CFD data can be used to augment 3D visualization. © 2006 IEEE.
Modeling and simulation of an Underwater Remotely Operated Vehicle (ROV) for surveillance and inspection of port facilities using CFD tools
(2008-01-01) Valencia, R.A.; Ramírez, J.A.; Gutiérrez, L.B.; García, M.J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
This article presents theoretical and computational studies with Computational Fluids Dynamics (CFD) tools of an Underwater Remotely Operated Vehicle (ROV), required to obtain reliable visual information, used for surveillance and maintenance of ship shells and underwater structures of Colombian port facilities. The thrust force is analyzed at the operational conditions by using CFD tools (FLUENT™, CFX™, COSMOSFLOW™) and the information about forces, torques and power of the vehicle's thrusters is obtained. The commercial propellers were modeled by using a reverse engineering process with a 3D scanner and Computer Aided Design (CAD) software (RAPIDFORM™). The results obtained with the CFD package allowed to evaluate several operating scenarios of the vehicle that are used for feedback purposes in the design process of the ROV before it be manufactured. Copyright © 2008 by ASME.
Building monitoring during the partial implosion stage
(International Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII, 2015-01-01) Garcés, J.; Botero, J.C.; Murià-Vila, D.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
The partial collapse of a building in Colombia caused severe damage to its structural components. An implosion was realized to induce the collapse of 50% of the deteriorated building. To evaluate the influence of the implosion on the remaining structure, a monitoring survey was realized using triaxial accelerometers. Time signals associated with ambient, seismic and forced vibration were obtained. A study of the records in the time and the frequency domain was made. The analysis of the information allowed determining some structural properties that were useful to calibrate the analytical model of the structure. © 2015, International Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII. All rights reserved.
Low altitude wind simulation over mount saint helens using NASA SRTM digital terrain model
(2007-01-01) Garcia, M.J.; Boulanger, P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
On February 11, 2000, the Shuttle Radar Topography Mission (SRTM) was launched into space as part of one of the pay load of the Shuttle Endeavor. Using a new radar sweeping technique most of the Earth's surfaces was digitized in 3D in approximately 10 days. SRTM acquired enough data during its mission to obtain a near-global high-resolution database of the Earth's topography. This paper describe how this revolutionary data set can be used to simulate anywhere around the Earth low altitude wind conditions for various atmospheric conditions. More specifically, we will describe the various processing steps necessary to convert this high-resolution terrain model provided by the SRTM database into a Computational Fluid Dynamic (CFD) volumetric mesh that is compatible with an open source CFD solver called OpenFOAM running in parallel on large West-Grid supercomputers. This work is the result of a new virtual wind-tunnel under development at the University of Alberta. In the paper, we present wind flow over the MountSaint Helens in the United States for a simple wind flow boundary condition. © 2006 IEEE.
Integrating design for assembly guidelines in packaging design with a context-based approach
(Elsevier, 2014-01-01) Betancur-Muñoz, P.; Osorio-Gómeza, G.; Martínez-Cadavid, J.F.; Duque-Lombana, J.F.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
In the product lifecycle, the packaging, as an object, has been on the back burner with respect to product and production systems design and some authors stated that its influence starts at the packing stage and ends when the customer obtains the product. Only a few years ago, its strategic role, protecting, containing and preserving the product, has been recognized, both in theory and in practice [1]. In this way, the packaging design has been focused in the accomplishment of some specific objectives, such as cost and space saving, material reduction, and quality problems avoidance. These approaches are object-related, but the design process is not considering that the packaging is also utilized to handle, transport, distribute, retail and promote the product. Therefore, even if mathematical solutions could be obtained for space optimization problems, these could not be relevant at industrial level since they are unfeasible throughout the packaging lifecycle, from either logistics or quality standpoints; and new restrictions should be considered. An approach proposed by Lee & Lye [2], called "Design for manual Packaging (DFPkg)", is based on Design for the Environment (DFEnv) and Design for Assembly (DFA) guidelines, since the activities related with packaging could be considered as assembly activities seeing that all the packed pieces are part of a unique system. Nevertheless, some guidelines from DFA are omitted or decontextualized and they are not connected to restrictions in the mathematical models. This paper presents an integral approach for packaging design, complementing the guidelines proposed by Lee & Lye [2] in key contexts of the packaging lifecycle, in order to generate restrictions for an optimization model. Besides, this approach has been validated with a real industrial case study where the obtained solution is compared with the current one. © 2014 Published by Elsevier B.V.
Development of an intercom: An undergraduate case study
(SPIE-INT SOC OPTICAL ENGINEERING, 2013-01-01) Alejandro Betancur, J.; Osorio, Gilberto; Cardona, Francisco; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
This paper gives a short description of a low cost communication device. The wireless intercom devices presented here enable communication between any two of these products through specialized synchronization options. This communication system consists of two functionally linked radiofrequency intercoms in the 2.4GHz free band. Each of these devices consist of a hands-free cellular system containing a microphone and a loudspeaker, which is connected individually to each communication device through a plug of four (4) contacts and three point five (3.5) mm in diameter, it also has a single USB connector for battery charging (without data bus), which is made of a lithium polymer, and finally three (3) buttons from where certain functions are controlled: volume level, audio filters, on, off, among other. © 2013 SPIE.
Current and future possibilities of V2V and I2V technologies: An analysis directed toward Augmented Reality systems
(SPIE-INT SOC OPTICAL ENGINEERING, 2014-01-01) Alejandro Betancur, J.; Osorio-Gomez, Gilberto; Arnedo, Aida; Yarce Botero, Andres; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
Nowadays, it is very important to explore the qualitative characteristics of autonomous mobility systems in automobiles, especially disruptive technology like Vehicle to Vehicle (V2V) and Infrastructure to Vehicle (I2V), in order to comprehend how the next generation of automobiles will be developed. In this sense, this research covers a general review about active safety in automobiles where V2V and I2V systems have been implemented; identifying the more realistic possibilities related to V2V and I2V technology and analyzing the current applications, some systems in development process and some future conceptual proposals. Mainly, it is notorious the potential development of mixing V2V and I2V systems pointing to increase the driver's attention; therefore, a configuration between these two technologies and some augmented reality system for automobiles (Head-Up Display and Head-Down Display) is proposed. There is a huge potential of implementation for this kind of configuration once the normative and the roadmap for its development can be widely established. © 2014 SPIE.
Functional analysis of fiber optic sensors using statistical photon counting: An automobile case study covered from quantum mechanics
(SPIE-INT SOC OPTICAL ENGINEERING, 2012-01-01) Alejandro Betancur, J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
Currently, the applications of fiber optic sensors on the automobile industry are gaining importance due to their potential for implementation in data acquisition and signal transmission. This paper covers from quantum mechanics, the photon counting in optical fibers using coherent states and generalized intelligent states, described by hyper-geometric functions and Bessel functions. Different fiber optic configurations will be showed, in order to show some representative factors that influence the probability of coherent and intelligent photons detected and transmitted by optical fibers. Finally, from the automotive industry, some applications are presented, from which the quantum-optical approach here proposed makes sense. © 2012 SPIE.
Principal component analysis -PCA- and delone triangulations for PL approximation C-1-continuous 1-manifolds in R-N
(ACTA PRESS, 2004-01-01) Ruiz, OE; Cadavid, CA; Garcia, MJ; Martinod, R; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
A Method is presented which combines statistical (Principal Component Analysis) and deterministic (Voronoi-Delone) methods to find Piecewise Linear approximations of curves C-i(u) in R-3 sampled with statistical noise. If the curves are self-intersecting, there are a finite number of points in which they are not 1-manifolds. Otherwise, they are 1-manifolds in all extents. The combination presented, of PCA and V-D methods, allows the recovery of 1-manifold approximations for C-i(u) for self-intersecting quasi-planar and non self-intersecting curves. In the later case the PCA alone succeeds in finding 1-manifold PL approximations for them. The algorithm implemented finds applications in contour and shape reconstruction from noisy data, subject to sampling errors or blockage.

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