https://revistas.uptc.edu.co/index.php/ingenieria/issue/feedRevista Facultad de Ingeniería2024-01-03T09:46:29-05:00Carlos Mauricio Moreno-Téllezrevista.ingenieria@uptc.edu.coOpen Journal Systems<p><em>Revista Facultad de Ingeniería </em><em>(Rev. Fac. </em><em>Ing)</em>, created in 1986, is an open-access international scientific journal devoted to various sub-areas of engineering, such as: Environmental, Electronic, Metallurgical and Materials, Systems and Computing, among others. The Journal is edited by the Universidad Pedagógica y Tecnológica de Colombia and aims to contribute to the dissemination of impact research through the publication of articles, in English and Spanish, on research and innovation, reviews, and reflections, which represent an original production in the field of engineering. The presentation of articles for publication in the Journal has no associated cost, since this is funded by the publishing institution. The Journal articles are published in <a href="https://revistas.uptc.edu.co/index.php/ingenieria/">https://revistas.uptc.edu.co/index.php/ingenieria/</a></p> <p>The Journal until 2019 maintained a quarterly periodicity, however, by determination of the Editorial Board, <strong>from the year 2020, it change to a model of continuous publication. Articles are received for publication throughout the year</strong>.</p> <p align="justify">The Journal is included in:</p> <p align="Justify"><strong>Databases: <a title="ESCI" href="http://ip-science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=EX&ISSN=0121-1129" target="_blank" rel="noopener">Emerging Sources Citation Index</a>, Fuente Academica Premier, GeoRef, <a title="Periodica_RFI" href="http://132.248.9.1:8991/F/YFREQSB75CF7MVR69EC5A5DVUBKNR2VN7E2C4JXB8M1LYCCA4X-12595?func=find-acc&acc_sequence=001324165" target="_blank" rel="noopener">PERIODICA</a>.</strong></p> <p align="Justify"><strong>Indexes and Directories: <a title="Publindex_RFI" href="https://scienti.minciencias.gov.co/publindex/#/revistasPublindex/detalle?tipo=R&idRevista=861" target="_blank" rel="noopener">Publindex</a> (Categoría B), <a title="DOAJ" href="https://doaj.org/toc/0121-1129" target="_blank" rel="noopener">DOAJ</a>, <a title="Latindex" href="http://www.latindex.unam.mx/latindex/ficha?folio=22340" target="_blank" rel="noopener">Latindex</a>, <a title="Sherpa_Romeo" href="https://v2.sherpa.ac.uk/id/publication/37436" target="_blank" rel="noopener">Sherpa/Romeo</a>.</strong></p> <p align="Justify"><strong>Journal Portals: <a title="SciELO" href="http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0121-1129&lng=en&nrm=iso" target="_blank" rel="noopener">SciELO</a>, <a title="Redalyc" href="http://www.redalyc.org/revista.oa?id=4139" target="_blank" rel="noopener">Redalyc</a>, <a title="REDIB" href="http://redib.org/Record/oai_revista1336-facultad-de-ingenier%C3%ADa" target="_blank" rel="noopener">REDIB</a>, <a title="Dialnet" href="http://dialnet.unirioja.es/servlet/revista?codigo=15896" target="_blank" rel="noopener">Dialnet</a>.</strong></p> <p align="Justify"><strong>Academic Profiles: <a title="GS RFI" href="https://scholar.google.com/citations?user=-BTnXKQAAAAJ&hl" target="_blank" rel="noopener">Google Scholar</a></strong></p> <p align="Justify"><strong>DOI</strong>: <strong><a title="DOI RFI" href="https://doi.org/10.19053/issn.0121-1129" target="_blank" rel="noopener">https://doi.org/10.19053/issn.0121-1129</a>.</strong></p>https://revistas.uptc.edu.co/index.php/ingenieria/article/view/16242Auditive Navigation System for Visually Impaired Individuals in Indoor Spaces Using Augmented Reality2023-11-29T13:35:21-05:00Edwin-Alfonso DíazCésar-Augusto Rodríguez-SuárezMaria-Amelia Eliseo<p>Visual impairment affects individuals with complete or partial loss of vision. Visually impaired students in Colombian educational institutions face challenges when navigating indoors due to the lack of braille signage. This paper presents the development, implementation, and testing of an augmented reality (AR)-based mobile app that uses rMQR codes to play acoustic descriptions of locations. The application enhances the independence and mobility of visually impaired students in academic spaces. The process involved designing a navigation system, developing software using Unity and Vuforia, and evaluating the application's functionality, accuracy, stability, and performance. A group of thirty-six (36) students validated the software, and their feedback was gathered through a questionnaire using a 5-Likert scale. The results showed that the app had an accessible interface, provided useful information about spaces, and improved autonomy and safety. The app demonstrated fast and accurate code scanning, and its effectiveness in promoting independence, meeting expectations, and not interfering with mobility was validated. The findings emphasize the potential of AR-based applications in supporting visually impaired individuals and fostering social inclusion.</p>2023-12-31T00:00:00-05:00Copyright (c) 2023 Edwin-Alfonso Díaz, César-Augusto Rodríguez-Suárez, Maria-Amelia Eliseohttps://revistas.uptc.edu.co/index.php/ingenieria/article/view/16717ONTOGuide: A Domain Ontology for the Retrieval and Publication of Online Educational Resources2023-10-23T10:25:50-05:00Paola-Andrea Otero-CanoLuz-Marina Sierra-MartínezHugo-Armando Ordoñez-Eraso<p>In today's digital landscape, the exponential growth of information on the web has led to challenges in its organization and management. Often, resources published on the web lack proper structure or appropriate descriptions, thus making it difficult to establish connections with similar resources—a critical issue when searching for educational materials. In such searches, the need for clear, reliable, and immediately available information takes precedence. There are strategies to tackle this problem, the use of ontologies stands out as a compelling solution because they offer a well-defined, lucid, and precise structure within specific domains. Consequently, this study focuses on crafting a domain-specific ontology that furnishes the required knowledge for publishing and retrieving educational resources from the web. We follow the methodology outlined in "Ontology Development 101: A Guide to Creating Your First Ontology" to design it. The outcome is a domain ontology applicable from two distinct perspectives: an academic standpoint, catering to those who seek to understand the underlying concepts, properties, and relationships involved in resource publication and retrieval; and an industrial one, serving as a support tool for companies or institutions aiming to navigate the process of publishing and retrieving resources to improve the management of their knowledge bases.</p>2023-12-29T00:00:00-05:00Copyright (c) 2023 Paola-Andrea Otero-Cano, Luz-Marina Sierra-Martínez, Hugo-Armando Ordoñez-Erasohttps://revistas.uptc.edu.co/index.php/ingenieria/article/view/16777Decision Tree Algorithm Moderately Coupled to PostgreSQL DBMS2023-11-01T20:52:44-05:00Ricardo Timarán-PereiraAnivar Chaves-TorresHugo Ordoñez-Erazo<p>Using machine learning for data management is an extraordinary opportunity to move towards a leadership model based on information, which drives the organization towards success in each initiative. However, when incorporating these technologies, a company presents problems associated with the economic and administrative costs generated in this process since these are usually quite high, limiting their implementation in MSMEs. This paper proposes to integrate supervised machine learning techniques into PostgreSQL DBMS in a moderately coupled architecture to provide it with the capabilities of discovering knowledge in databases. Classification and regression algorithms were coupled by developing extensions using one of the procedural languages supported by PostgreSQL. Initially, the C4.5 decision tree classification algorithm was implemented using the PL/pgSQL procedural language. The main advantage of this strategy is that it considers the scalability, administration, and data manipulation of the DBMS. Since PostgreSQL is an open-source manager, organizations such as MSMEs will have a free tool that allows them to perform predictive analysis in order to improve their decision-making processes by anticipating future consumer behavior and making rational decisions based on their findings.</p>2023-11-21T00:00:00-05:00Copyright (c) 2023 Ricardo Timarán-Pereira, Anivar Chaves-Torres, Hugo Ordoñez-Erazohttps://revistas.uptc.edu.co/index.php/ingenieria/article/view/16395SentiFuzzy: A Twitter Sentiment Classifier Based on Fuzzy Logic2023-10-08T10:22:54-05:00Jimena-Adriana Timaná-PeñaCarlos-Alberto Cobos-LozadaJason-Paul Anturi-MartínezJosé-Luis Paz-Realpe<p>In the sentiment classification process, the quality of the polarity varies depending on the characteristics or attributes possessed by the classifier and those of the tweet being analyzed; therefore, a sentiment classifier achieves its highest quality in scenarios in which its characteristics are similar to the characteristics of the tweet. This article presents SentiFuzzy, an algorithm that, based on the characterization of attributes of five sentiment classifiers recognized in the literature, implemented a series of inference rules and fuzzy sets, which allowed to define mathematical weights for each classifier; thus, to know which classifier should be selected according to the nature of the analyzed tweet. Additionally, these weights were optimized by the Hill-Climbing optimization algorithm, which yielded, in some scenarios, a higher polarity accuracy than that reported in the state of the art and, in other cases, a competitive polarity accuracy compared to the polarity reported by the compared classifiers.</p>2023-12-01T00:00:00-05:00Copyright (c) 2023 Jimena-Adriana Timaná-Peña, Carlos-Alberto Cobos-Lozada, Jason-Paul Anturi-Martínez, José-Luis Paz-Realpehttps://revistas.uptc.edu.co/index.php/ingenieria/article/view/16457Discovering the Spread Patterns of SARS-CoV-2 in Metropolitan Areas2024-01-03T09:46:29-05:00Mauricio-René Herrera-MarínFrancisco Vergara-PerucichCarlos Aguirre-NúñezAlex Godoy-Faúndez<p>The spread of COVID-19 has been extensively studied, but the intricate dynamics of its transmission in interdependent and segregated urban areas, constrained by mobility restrictions, have not been completely understood yet. The pandemic's dynamic-adaptive nature implies that virus spread is influenced by diverse factors operating disparately in urban areas with distinct roles. This study investigates the dynamic spread patterns of COVID-19 in the Santiago Metropolitan Area (SMA), Chile, leveraging explanatory variables related to urban mobility, socio-spatial characteristics, segregation, and sanitary measures. Using publicly available mobility data, we used two indices—the Internal Mobility Index (capturing individual trips within a city’s commune), and the External Mobility Index (indicating trips crossing commune borders). These indices were derived from geolocation data recorded by the cellular telephone antenna network of the Telefónica company by tracking successive antenna transitions during trips. The analysis encompasses a three-stage pandemic pattern, corresponding to periods before, during, and after an initial lockdown in the pandemic's first year. Elastic-Net-Penalty regression models, skillful in both feature selection and managing highly correlated predictors while maintaining the interpretability of the models, are used. These models employ a combination of L<sub>1</sub> (ridge) and L<sub>2</sub> (lasso) regularized log-likelihood optimization. The ridge penalty functions by contracting the coefficients of correlated predictors, pulling them closer to each other. In contrast, the lasso method tends to choose one predictor and exclude the others. The analysis with these models unveils influences of various explanatory variable subsets throughout the pandemic. Importantly, the study provides evidence justifying the suboptimal outcomes of the dynamic quarantine imposed by authorities. Mobility restrictions were implemented without considering the intricate contextual factors, thus impacting vulnerable areas of the city adversely.</p>2023-12-31T00:00:00-05:00Copyright (c) 2023 Mauricio-René Herrera-Marín, Francisco Vergara-Perucich, Carlos Aguirre-Núñez, Alex Godoy-Faúndez