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Ítem 10 Challenges for the Specification of Self-Adaptive Software(IEEE, 2018-01-01) Munoz-Fernandez, JC; Mazo, R; Salinesi, C; Tamura, G; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las ComunicacionesThe demand for systems that continue on operation by adapting themselves in response to disturbing changes in their environment has increased in the last decades. Those systems, termed self-adaptive software (SAS) systems, should be developed with techniques and methods appropriated for analysing and designing this kind of systems, starting from the requirements phase. Several contributions propose approaches to improve the specification of requirements for those systems. This paper aims to review the most significant challenges still open in the domains of languages for requirements specification and methods for model verification of self-adaptive systems, independently of their particular application areas. More concretely, the main contribution of this paper is a list of ten challenges to achieve a better-defined specification of requirements for SAS systems, and a more effective verification of such specifications. These challenges are well worthy of being addressed in both communities, the requirements engineering (RE) and the SAS one.Ítem 13th International Public Communication of Science and Technology. Mayo 5 al 8, 2014, Salvador, Brasil.(2014-05-05) Abad Restrepo, Ana CristinaIn Colombia there is a noticeable difference, between public and private schools, in the approach and education of science, leaving the students of the former ones at a disadvantage. As a response to that, the EAFIT Children’s University program has been proposed to promote inclusion and social integration through the following process: every year 750 free places are assigned - 50% to public schools students and 50% to private schools students. With such methodology we acknowledge and value the diversity of the workshop´s participants, in terms of gender, social, cultural or family origins. But, how do these differences influence the approach to science and the collective building of knowledge? What kind of dilemmas appears due to the diverse origins of the participants? What knowledge have we acquired? What meaningful experiences have been collected that really lead to an understanding of how the diversity has a direct influence on the approach to and appropriation of science? In order to address those questions, we will present a case study with a group of 23 boys and girls between the ages of 7 and 8 years old, during 8 workshops that took place over the course of one year.Ítem 13th International Public Communication of Science and Technology. Mayo 5 al 8, 2014, Salvador, Brasil.(2014-05-05) Abad Restrepo, Ana Cristina; Jaramillo Escobar, Ana MaríaThe Questions Network (Red de las preguntas) is a digital project developed by The Children‟s University of EAFIT in Medellín, Colombia. This project collects questions from children and teenagers and answers them through different formats, trying to encourage curiosity, critical thinking and the sharing of knowledge. In The Questions Network, questions have an author. Every time a child leaves a question on the microsite, he/she is asked to leave his/her name, age and contact information. Each child is notified when his/her question is published and answered. The project is open to every young Spanish speaker in the world; to participate, a child needs only curiosity and Internet access. The project also looks to involve researchers from many areas, encouraging them to think about the essence of their work and to share their knowledge in a simple but rigorous way. This article presents an analysis of obtained results in the first three years of the project, as well as the found difficulties from a social perspective of the knowledge gathered and the communication of Science.Ítem 2D shape similarity as a complement for Voronoi-Delone methods in shape reconstruction(PERGAMON-ELSEVIER SCIENCE LTD, 2005-02-01) Ruiz, O.E.; Cadavid, C.A.; Granados, M.; Peña, S.; Vásquez, E.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Laboratorio CAD/CAM/CAEIn surface reconstruction from planar cross sections it is necessary to build surfaces between 2D contours in consecutive cross sections. This problem has been traditionally attacked by (i) direct reconstruction based on local geometric proximity between the contours, and (ii) classification of topological events between the cross sections. These approaches have been separately applied with limited success. In case (i), the resulting surfaces may have overstretched or unnatural branches. These arise from local contour proximity which does not reflect global similarity between the contours. In case (ii), the topological events are identified but are not translated into the actual construction of a surface. This article presents an integration of the approaches (i) and (ii). Similarity between the composite 2D regions bounded by the contours in consecutive cross sections is used to: (a) decide whether a surface should actually relate two composite 2D regions, (b) identify the type and location of topological transitions between cross sections and (c) drive the surface construction for the regions found to be related in step (a). The implemented method avoids overstretched or unnatural branches, rendering a surface which is both geometrically intuitive and topologically faithful to the cross sections of the original object. The presented method is a good alternative in cases in which correct reproduction of the topology of the surface (e.g. simulation of flow in conduits) is more important than its geometry (e.g. assessment of tumor mass in radiation planning). © 2004 Elsevier Ltd. All rights reserved.Ítem 2D simulation flue implementing the lattice-boltzmann method(TRANS TECH PUBLICATIONS LTD, 2014-01-01) Ruiz, D.B.; Mesa, A.A.; Alvis, R.G.; Ruiz, D.B.; Mesa, A.A.; Alvis, R.G.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica AplicadaCurrently in the process of engineering, but increasingly implemented simulation methods since they are an economical and feasible to predict the behavior of some variable you wish to benefit. The problem of fluid simulation is a broad field of study, traditionally in this area are implemented domain discretization methods, volumes, differences or finite elements (Computational Fluid Dynamics), in this work, a different approach where the discretization is made on the physical properties of fluid and the fluid for reconstruction from its microscopic properties, simulating these, propagating Boltzmann distribution functions for the grid of nodes, this set is comprised of a fluid group of nodes, nodes fluid the border and nodes structure, docked the method to the boundary conditions necessary to simulate Glycerol in a pipe. © (2014) Trans Tech Publications, Switzerland.Ítem 2D simulation flue implementing the lattice-boltzmann method(TRANS TECH PUBLICATIONS LTD, 2014-01-01) Ruiz, D.B.; Mesa, A.A.; Alvis, R.G.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las ComunicacionesCurrently in the process of engineering, but increasingly implemented simulation methods since they are an economical and feasible to predict the behavior of some variable you wish to benefit. The problem of fluid simulation is a broad field of study, traditionally in this area are implemented domain discretization methods, volumes, differences or finite elements (Computational Fluid Dynamics), in this work, a different approach where the discretization is made on the physical properties of fluid and the fluid for reconstruction from its microscopic properties, simulating these, propagating Boltzmann distribution functions for the grid of nodes, this set is comprised of a fluid group of nodes, nodes fluid the border and nodes structure, docked the method to the boundary conditions necessary to simulate Glycerol in a pipe. © (2014) Trans Tech Publications, Switzerland.Ítem An academic design methodology for electrical mobility products - from necessity to functional prototype(2011-09-09) Osorio Gómez, Gilberto; Mejía Gutiérrez, Ricardo; Sierra Zuluaga, Luis Fernando; Universidad EAFIT. Departamento de Ingeniería de Diseño; Luis Fernando Sierra (lsierraz@eafit.edu.co); Ricardo Mejia (rmejiag@eafit.edu.co); Gilberto Osorio (gosoriog@eafit.edu.co); Ingeniería de Diseño - GRIDThe undergraduate program in Product Design Engineering at EAFIT University-Colombia, includes an applied project course during eight semesters with different topics -- Students attend their last project course in seventh and eighth semester integrated into one year topic -- In this project, they have to design a new high-tech consumer product in electrical mobility for different types of transportation need and to construct a completely functional prototype -- The objectives of these courses are to focus on the triad of “Product-User-Context” as well as to foster design, engineering, manufacturing, management and entrepreneurship skills -- In order to offer a systematic way of working, and to obtain better results, a systematic design methodology has been adopted, adapted and applied during the whole product development process in order to facilitate representation, analysis, calculation, management and control of the information related to the product -- The methodology is broadly explained through activities, tools, information and results related to four main stages: 1) Need research & problem statement, 2) Conceptual design, 3) Detailed design and 4) Prototype construction & testing -- A successful case study is presented following all the stages of the presented methodology for the development of an Electric Power-Assisted BicycleÍtem Academic synergy through integrated mechatronic projects(IEEE, 2018-01-01) Velasquez-Lopez, Alejandro; Rodriguez-Garcia, AlbertoThis Innovative to Practice Work in Progress paper presents an approach to obtain synergy by implementing an integrated mechatronic project within a postgraduate program. Mechatronics has been a reference for synergetic integration of technology. However, synergy is obtained not only from technical issues, but through professional skills. Nevertheless, traditional education and industry standards focus only on the technical side. The study case is performed within the program Integrated Design of Technical Systems by implementing strategies such as integrated scheduling, integrated assessment and project proposal with application fields such as agriculture, robotics, health and mobility. This approach does not require additional credits for a project course, since the project lies underneath the courses. It has led to an increase of enrollment of students, which is significant during times when less engineers opt for further technical education.Ítem Academic synergy through integrated mechatronic projects(Institute of Electrical and Electronics Engineers Inc., 2019-01-01) Velasquez-Lopez A.; Rodriguez-Garcia A.This Innovative to Practice Work in Progress paper presents an approach to obtain synergy by implementing an integrated mechatronic project within a postgraduate program. Mechatronics has been a reference for synergetic integration of technology. However, synergy is obtained not only from technical issues, but through professional skills. Nevertheless, traditional education and industry standards focus only on the technical side. The study case is performed within the program Integrated Design of Technical Systems by implementing strategies such as integrated scheduling, integrated assessment and project proposal with application fields such as agriculture, robotics, health and mobility. This approach does not require additional credits for a project course, since the project lies underneath the courses. It has led to an increase of enrollment of students, which is significant during times when less engineers opt for further technical education. © 2018 IEEE.Ítem Academic synergy through integrated mechatronic projects(IEEE, 2018-01-01) Velasquez-Lopez, Alejandro; Rodriguez-Garcia, Alberto; Velasquez-Lopez, Alejandro; Rodriguez-Garcia, Alberto; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecatrónica y Diseño de MáquinasThis Innovative to Practice Work in Progress paper presents an approach to obtain synergy by implementing an integrated mechatronic project within a postgraduate program. Mechatronics has been a reference for synergetic integration of technology. However, synergy is obtained not only from technical issues, but through professional skills. Nevertheless, traditional education and industry standards focus only on the technical side. The study case is performed within the program Integrated Design of Technical Systems by implementing strategies such as integrated scheduling, integrated assessment and project proposal with application fields such as agriculture, robotics, health and mobility. This approach does not require additional credits for a project course, since the project lies underneath the courses. It has led to an increase of enrollment of students, which is significant during times when less engineers opt for further technical education.Ítem Achieving object persistence in an augmented reality indoor environment(2003-01-01) Gutiérrez, M.D.; Márquez, A.M.; Trefftz, H.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las ComunicacionesIn this paper we present a system for achieving object persistence in Augmented Reality Indoors Environments. In AR systems based on the Augmented Reality toolkit without object persistence, virtual objects appear and disappear as the corresponding pattern gets in and out of the user's field of view. Object persistence allows the environment to remember the relative position and orientation of virtual objects, making them appear more stable to the user. We describe object persistence as a series of transformations applied to the objects in a simple indoor environment. We then present the results of a quantitative experiment that shows how interactivity is improved by the use of object persistency.Ítem Action research as the basis to implement enterprise integration engineering and business process management(Hermes Science, 2005) Molina, Arturo; Canché, Luis; Rosas, Roberto; Camacho, Ricardo; Mejía Gutiérrez, Ricardo; Ocampo, Manuel A.; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ricardo Mejia (rmejiag@eafit.edu.co); Luis Canche (luis.canche@itesm.mx); Arturo Molina ( armolina@itesm.mx); Ingeniería de Diseño - GRIDThis paper describes how Action Research (AR) provides a methodology to integrate Business Process Management (BPM) and Enterprise Integration Engineering (EIE) -- The elements of EIE and BPM are aligned to the different stages of AR methodology to achieve a knowledge evolutional cycle to manage change within the enterprise -- The methodology is leveraged by a reference framework which helps to define strategies, evaluate performance measures, design/re-design processes and establish the enabling tools and technologies -- This methodology allows to achieve the integration of enterprise modeling and business processes to create an enterprise model, a formal structure to generate business knowledge and define a platform to achieve the interoperability between processesÍtem Adaptative cubical grid for isosurface extraction(2009) Congote, John; Moreno, Aitor; Barandiaran, Iñigo; Barandiaran, Javier; Ruíz, Óscar E.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Laboratorio CAD/CAM/CAEThis work proposes a variation on the Marching Cubes algorithm, where the goal is to represent implicit functions with higher resolution and better graphical quality using the same grid size -- The proposed algorithm displaces the vertices of the cubes iteratively until the stop condition is achieved -- After each iteration, the difference between the implicit and the explicit representations are reduced, and when the algorithm finishes, the implicit surface representation using the modified cubical grid is more detailed, as the results shall confirm -- The proposed algorithm corrects some topological problems that may appear in the discretisation process using the original gridÍtem Adaptative cubical grid forisosurface extraction(2009-01-01) Congote, J.; Moreno, A.; Barandiaran, I.; Barandiaran, J.; Ruiz, O.E.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Laboratorio CAD/CAM/CAEThis work proposes a variation on the Marching Cubes algorithm, where the goal is to represent implicit functions with higher resolution and better graphical qualiry using the same grid size. The proposed algorithm displaces the vertices of the cubes iteratively until the stop condition is achieved. After each iteration, the difference betvveen the implicit and the explicit representations are reduced, and when the algorithm finishes, the implicit surface representation using the modified cubical grid is more detailed, as the results shall confirm. The proposed algorithm corrects some topological problems that may appear in the discretisation process using the original grid.Ítem Adaptive architecture to support context-aware Collaborative Networked Virtual Surgical Simulators (CNVSS)(SPRINGER, 2014-01-01) Diaz, C.; Trefftz, H.; Quintero, L.; Acosta, D.; Srivastava, S.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las ComunicacionesStand-alone and networked surgical virtual reality based simulators have been proposed as means to train surgical skills with or without a supervisor nearby the student or trainee. However, surgical skills teaching in medicine schools and hospitals is changing, requiring the development of new tools to focus on: (i) importance of mentors role, (ii) teamwork skills and (iii) remote training support. For these reasons a surgical simulator should not only allow the training involving a student and an instructor that are located remotely, but also the collaborative training session involving a group of several students adopting different medical roles during the training session. Collaborative Networked Virtual Surgical Simulators (CNVSS) allow collaborative training of surgical procedures where remotely located users with different surgical roles can take part in a training session. Several works have addressed the issues related to the development of CNVSS using various strategies. To the best of our knowledge no one has focused on handling heterogeneity in collaborative surgical virtual environments. Handling heterogeneity in this type of collaborative sessions is important because not all remotely located users have homogeneous Internet connections, nor the same interaction devices and displays, nor the same computational resources, among other factors. Additionally, if heterogeneity is not handled properly, it will have an adverse impact on the performance of each user during the collaborative session. In this paper we describe the development of an adaptive architecture with the purpose of implementing a context-aware model for collaborative virtual surgical simulation in order to handle the heterogeneity involved in the collaboration session. © 2014 Springer International Publishing.Ítem Adaptive architecture to support context-aware Collaborative Networked Virtual Surgical Simulators (CNVSS)(SPRINGER, 2014-01-01) Diaz, C.; Trefftz, H.; Quintero, L.; Acosta, D.; Srivastava, S.; Universidad EAFIT. Departamento de Ingeniería de Procesos; Desarrollo y Diseño de ProcesosStand-alone and networked surgical virtual reality based simulators have been proposed as means to train surgical skills with or without a supervisor nearby the student or trainee. However, surgical skills teaching in medicine schools and hospitals is changing, requiring the development of new tools to focus on: (i) importance of mentors role, (ii) teamwork skills and (iii) remote training support. For these reasons a surgical simulator should not only allow the training involving a student and an instructor that are located remotely, but also the collaborative training session involving a group of several students adopting different medical roles during the training session. Collaborative Networked Virtual Surgical Simulators (CNVSS) allow collaborative training of surgical procedures where remotely located users with different surgical roles can take part in a training session. Several works have addressed the issues related to the development of CNVSS using various strategies. To the best of our knowledge no one has focused on handling heterogeneity in collaborative surgical virtual environments. Handling heterogeneity in this type of collaborative sessions is important because not all remotely located users have homogeneous Internet connections, nor the same interaction devices and displays, nor the same computational resources, among other factors. Additionally, if heterogeneity is not handled properly, it will have an adverse impact on the performance of each user during the collaborative session. In this paper we describe the development of an adaptive architecture with the purpose of implementing a context-aware model for collaborative virtual surgical simulation in order to handle the heterogeneity involved in the collaboration session. © 2014 Springer International Publishing.Ítem Adaptive architecture to support context-aware Collaborative Networked Virtual Surgical Simulators (CNVSS)(SPRINGER, 2014-01-01) Diaz, C.; Trefftz, H.; Quintero, L.; Acosta, D.; Srivastava, S.; Diaz, C.; Trefftz, H.; Quintero, L.; Acosta, D.; Srivastava, S.; Universidad EAFIT. Departamento de Ciencias; Modelado MatemáticoStand-alone and networked surgical virtual reality based simulators have been proposed as means to train surgical skills with or without a supervisor nearby the student or trainee. However, surgical skills teaching in medicine schools and hospitals is changing, requiring the development of new tools to focus on: (i) importance of mentors role, (ii) teamwork skills and (iii) remote training support. For these reasons a surgical simulator should not only allow the training involving a student and an instructor that are located remotely, but also the collaborative training session involving a group of several students adopting different medical roles during the training session. Collaborative Networked Virtual Surgical Simulators (CNVSS) allow collaborative training of surgical procedures where remotely located users with different surgical roles can take part in a training session. Several works have addressed the issues related to the development of CNVSS using various strategies. To the best of our knowledge no one has focused on handling heterogeneity in collaborative surgical virtual environments. Handling heterogeneity in this type of collaborative sessions is important because not all remotely located users have homogeneous Internet connections, nor the same interaction devices and displays, nor the same computational resources, among other factors. Additionally, if heterogeneity is not handled properly, it will have an adverse impact on the performance of each user during the collaborative session. In this paper we describe the development of an adaptive architecture with the purpose of implementing a context-aware model for collaborative virtual surgical simulation in order to handle the heterogeneity involved in the collaboration session. © 2014 Springer International Publishing.Ítem Adaptive LAMDA applied to identify and regulate a process with variable dead time(Institute of Electrical and Electronics Engineers Inc., 2020-01-01) Morales L.; Pozo D.; Aguilar J.; Rosales A.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las ComunicacionesIn this paper, an adaptive intelligent controller based on the fuzzy algorithm called LAMDA (Learning Algorithm for Multivariable Data Analysis) is presented in order to identify and regulate a process with variable dead time. The original algorithm has been used for supervised and unsupervised learning, whose main field of application is the identification of functional states of the systems. In this work a modification of LAMDA has been implemented which is capable of online learning using hybrid techniques. The proposal consists of two stages: training stage to learn about the unknown plant in order to establish initial parameters to the controller, and a second phase, called application, in which the control strategy is updated using online learning. The proposed method is tested in the control objective of regulation of a process with variable dead time, to analyze the viability of its utilization in these types of systems in which their dynamics are variable and unknown. © 2020 IEEE.Ítem Adicion de inteligencia de trabajo a un robot industrial de 6 y 1/2 EJES(International Institute of Informatics and Systemics, IIIS, 2014-01-01) Arango, I.D.; Hincapié, M.; Pineda, F.A.; Arango, I.D.; Hincapié, M.; Pineda, F.A.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecatrónica y Diseño de MáquinasÍtem Advanced HCI and 3D Web over Low performance Devices(2012-07) Oyarzun, David; Del Pozo, Arantza; Congote, John Edgar; Olaizola, Igor G.; Sainz, Iñaki; Leturia, Igor; Arregi, Xabier; Ruíz, Óscar; Universidad EAFIT. Departamento de Ingeniería Mecánica; Laboratorio CAD/CAM/CAEThis position paper presents the authors’ goals on advanced human computer interaction and 3D Web -- Previous work on speech, natural language processing and visual technologies has achieved the development of the BerbaTek language learning demonstrator, a 3D virtual tutor that supports Basque language students through spoken interaction -- Next steps consist on migrating all the system to multidevice web technologies -- This paper shows the architecture defined and the steps to be performed in the next months