I+D+I en Tecnologías de la Información y las Comunicaciones

URI permanente para esta comunidad

https://hdl.handle.net/10784/7941

El grupo de investigación desarrollo e innovación en Tecnologías de la Información y las Comunicaciones (TIC) es un grupo interdisciplinario con nueve líneas de investigación. Para el logro de su misión, el grupo ejecuta proyectos de investigación y desarrollo; ofrece servicios de asesoría y consultoría; se apoya en alianzas, cooperación técnica y participación activa en redes nacionales e internacionales de investigación; consolidando su liderazgo, experiencia y trayectoria como grupo en el ámbito nacional e internacional.

Líneas de investigación: Gestión de Información y Conocimiento; Gestión tecnológica y Producción de Contenidos Digitales; Informática Educativa; Ingeniería de Software; Lógica y Computación; Realidad Mixta y Videojuegos Sistemas Distribuidos.
Código Minciencias: COL0013281.
Categoría 2019: A.
Escuela: Ingeniería.
Departamento académico: Ingeniería de Sistemas.
Coordinadora: Marta Silvia Del Socorro Tabares Betancur.
Correo electrónico: mtabares@eafit.edu.co

Examinar

Mostrando 1 - 20 de 200

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 Comunicaciones
The 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.
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 Comunicaciones
Currently 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.
2D simulation pipeline implementing the Lattice-Boltzmann method
(TRANS TECH PUBLICATIONS LTD, 2013-09-01) Gomez, Rodrigo Orlando; Gomez, Rodrigo Orlando; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
3D Collaborative Virtual Environment for Real-Time GUI Sketching
(2011-07-01) Trefftz, Helmuth; Trefftz, Helmuth; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
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 Comunicaciones
In 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.
Adaptive Architecture to Support Context-Aware Collaborative Networked Virtual Surgical Simulators
(Springer international publishing, 2014-01-01) Díaz, Christian; Gomez, H.T.; Quintero, Lucía; Acosta, Diego; Srivastava, Sakti; Díaz, Christian; Gomez, H.T.; Quintero, Lucía; Acosta, Diego; Srivastava, Sakti; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
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 Comunicaciones
Stand-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.
Adaptive Architecture to Support Context-Aware Collaborative Networked Virtual Surgical Simulators (CNVSS)
(2014-01-01) Diaz Leon, Christian Andres; Gomez, H.T.; Lucia Quintero M, O.; Acosta Maya, D.A.; Sakti Srivastava; Diaz Leon, Christian Andres; Gomez, H.T.; Lucia Quintero M, O.; Acosta Maya, D.A.; Sakti Srivastava; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
Stand-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...
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 Comunicaciones
In 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.
Adaptive learning objects in the context of eco-connectivist communities using learning analytics
(Elsevier BV, 2019-11-01) Diego, Mosquera; Carlos, Guevara; Jose, Aguilar; Diego, Mosquera; Carlos, Guevara; Jose, Aguilar; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
Eco-connectivist communities are groups of individuals with similar characteristics, which emerge in a connectivist learning process within a knowledge ecology. ARMAGAeco-c is a reflexive and autonomic middleware for the management and optimization of eco-connectivist knowledge ecologies using description, prediction and prescription models. Adaptive Learning Objects are autonomic components that seek to personalize Learning Objects according to certain contextual information, such as learning styles of the learner's, technological restrictions, among other aspects. MALO is a system that allows the management of Adaptive Learning Objects. One of the main challenges of the connectivist learning process is the adaptation of the educational context to the student needs. One of them is the learning objects. For this reason, this work has two objectives, specifying a data analytics task to determine the learning style of a student in an eco-connectivist community and, adapting instances of Adaptive Learning Objects using the learning styles of the students in the communities. We use graph theory to identify the referential member of each eco-connectivist community, and a learning paradigm detection algorithm to identify the set of activities, strategies, and tools that Adaptive Learning Objects instances should have, according to the learning style of the referential member. To test our approach, a case study is presented, which demonstrates the validity of our approach.
Adaptive System for the Generation of Emerging Behaviors in Serious Emerging Games
(Instituto Politecnico Nacional, 2020-01-01) Aguilar, Jose; Altamiranda, Junior; Diaz, Francisco; Aguilar, Jose; Altamiranda, Junior; Diaz, Francisco; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
A video game adaptation system (SAV) for serious emergent games (JSE), allows emergent behaviors in the game, such as the appearance of environments, events, narratives and characters, among others, in order to adapt to the context in the one that is developing. In previous articles the architecture of a JSE engine has been proposed. Furthermore, a first subsystem has been proposed that allows the emergence of a JSE according to the objectives of the environment, based on the ant colony optimization algorithm (ACO). In the present work, the second component of said architecture is specified, the SAV, which allows its dynamic adaptation (during the JSE). The SAV is made up of the sub-layers of strategies, sequences and properties, which manage each of these types of possible emergencies in a JSE, with the intention of dynamically adapting it to the context-domain where the game is being played. Furthermore, in this work the behavior of these sublayers is analyzed in a specific case study, showing very encouraging results of SAV in the educational context of an intelligent classroom (SaCI).
Adequation of a Virtual Immersive Environment for a Learning-Teaching Interaction Using the Limem 3d Method.
(2015-01-01) TORRES, DAVID MAURICIO; Gomez, H.T.; TORRES, DAVID MAURICIO; Gomez, H.T.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
Over the past thirty years, since the advent of the Web, the potential use of virtual environments for teaching-learning processes has undergone an exponential increase, leading us quickly from the use of web pages to social networks, and fro
Advanced fuzzy-logic-based context-driven control for HVAC management systems in buildings
(Institute of Electrical and Electronics Engineers Inc., 2020-01-01) Morales Escobar L.; Aguilar J.; Garces-Jimenez A.; Gutierrez De Mesa J.A.; Gomez-Pulido J.M.; Morales Escobar L.; Aguilar J.; Garces-Jimenez A.; Gutierrez De Mesa J.A.; Gomez-Pulido J.M.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
Control in HVAC (heating, ventilation and air-conditioning) systems of buildings is not trivial, and its design is considered challenging due to the complexity in the analysis of the dynamics of its nonlinear characteristics for the identification of its mathematical model. HVAC systems are complex since they consist of several elements, such as heat pumps, chillers, valves, heating/cooling coils, boilers, air-handling units, fans, liquid/air distribution systems, and thermal storage systems. This article proposes the application of LAMDA (learning algorithm for multivariable data analysis) for advanced control in HVAC systems for buildings. LAMDA addresses the control problem using a fuzzy classification approach without requiring a mathematical model of the plant/system. The method determines the degree of adequacy of a system for every class and subsequently determines its similarity degree, and it is used to identify the functional state or class of the system. Then, based on a novel inference method that has been added to LAMDA, a control action is computed that brings the system to a zero-error state. The LAMDA controller performance is analyzed via evaluation on a regulation problem of an HVAC system of a building, and it is compared with other similar approaches. According to the results, our method performs impressively in these systems, thereby leading to a trustable model for the implementation of improved building management systems. The LAMDA control performs very well for disturbances by proposing control actions that are not abrupt, and it outperforms the compared approaches. © 2013 IEEE.
Agents as tutors in augmented reality
(2003-01-01) Álvarez, N.; Trefftz, H.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
Interaction between virtual entities and human beings should be similar to the normal interaction between human beings. Verbal interaction is the usual way of interaction among humans, but the interfaces that allow verbal communication between a human being and an agent (virtual human) have a limited vocabulary, need a lot of training and are expensive. In this paper we propose an Augmented Reality System with an unidirectional interface between an agent and a person. By using gestures, animations and adequate texts the agent can show a user how to perform a simple task. We hope that the tests to be conducted will show how useful this unidirectional interface is.
Ambientes de Aprendizaje en el Siglo XXI
(2008-11-01) CORREA, FRANCISCO JOSE; CORREA, FRANCISCO JOSE; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
Ambientes de Aprendizaje para el tercer milenio
(1997-01-01) ATUESTA, MARIA DEL ROSARIO; ATUESTA, MARIA DEL ROSARIO; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
Análisis comparativo entre: «el análisis exploratorio de datos» y los modelos de «árboles de decisión» y «kmeans » en el diagnóstico de la malignidad en algunos exámenes de cáncer de mama. Un estudio de caso
(Revista Espacios, 2018-01-01) Sánchez Zuleta, C.C.; Giraldo Marín, L.M.; Piedrahita Escobar, C.C.; Bonet, I.; Lochmüller, C.; Tabares Betancur, M.S.; Peña, A.; Sánchez Zuleta, C.C.; Giraldo Marín, L.M.; Piedrahita Escobar, C.C.; Bonet, I.; Lochmüller, C.; Tabares Betancur, M.S.; Peña, A.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
The exponential growth of medical data has generated the need to implement new techniques of information analysis that support decision making. The objective of this article is to identify the aggregated value that data mining models have in decision making in the information given by exploratory analysis. It was used a case study methodology for two data sets, that look to determine the malignity of detected masses, in the breasts of patients, through the interpretation of attributes registered from the mases. The results show a complementary behavior of both techniques. © 2018.
Aplicaciones Móviles para la Evaluación de Conductores y Usuarios en Sistemas Estratégicos de Transporte Público
(Fundación Universitaria Antonio de Arévalo, 2019-12-21) Sagbini Daza, Kathy; Ramirez, T.; Castañeda, L.; Toro, M.; Sagbini Daza, Kathy; Ramirez, T.; Castañeda, L.; Toro, M.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
APPLIES: a framework for evaluAting organization's motivation and Preparation for adoPting product LInEs
(IEEE, 2018-01-01) Rincon, L; Mazo, R; Salinesi, C; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
In the software industry, product Lines has emerged as an attractive approach to perform planned reuse. Nevertheless, a product line solution is not appropriate for all the cases and requires some conditions to be implemented successfully. The literature offers several contributions regarding the adoption of product lines. However, only a few of these support decision-makers for taking well-informed decisions in favor or against following this approach. This paper presents APPLIES, a framework to (i) detect signals that could motivate an organization to adopt a product line approach (ii) assess to what extent a company is prepared for supporting the practices necessary to adopt a product line. APPLIES is grounded in a thematic analysis of the literature and was preliminarily evaluated with two experts through a survey and an interview. The results of the evaluation provide us insights to create an improved version of the proposal following a design-science method.
APPLIES: A framework for evaluAting organization's motivation and preparation for adopting product lines
(IEEE Computer Society, 2018-01-01) Rincón, L.; Mazo, R.; Salinesi, C.; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las Comunicaciones
In the software industry, product Lines has emerged as an attractive approach to perform planned reuse. Nevertheless, a product line solution is not appropriate for all the cases and requires some conditions to be implemented successfully. The literature offers several contributions regarding the adoption of product lines. However, only a few of these support decision-makers for taking well-informed decisions in favor or against following this approach. This paper presents APPLIES, a framework to (i) detect signals that could motivate an organization to adopt a product line approach (ii) assess to what extent a company is prepared for supporting the practices necessary to adopt a product line. APPLIES is grounded in a thematic analysis of the literature and was preliminarily evaluated with two experts through a survey and an interview. The results of the evaluation provide us insights to create an improved version of the proposal following a design-science method. © 2018 IEEE.

Examinar

Examinando I+D+I en Tecnologías de la Información y las Comunicaciones por Título

Resultados por página

Opciones de ordenación