Facultad de Arquitectura, Diseño y Artes
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Development and Evaluation of a Computerized Didactic Guide with Mathematical Foundations for the Teaching-Learning of Physics

2023 , Balladares-Pico L.M. , Espinosa-Pinos C.A. , Núñez Torres, María Giovanna

The present research aims to implement a computerized guide for the development of meaningful learning of mathematical foundations for learning Physics. It is based on a quantitative approach with a quasi-experimental design with a descriptive/explanatory scope. The population is made up of 20 first year high school students of the Luis A. Martinez Educational Unit; for the quantitative approach, the type of sample is intentional, therefore, 20 first year high school students have been considered. The research technique used is the survey addressed to students and teachers, with the questionnaire as an instrument validated by means of the expert judgment technique. The reliability and validity of the instrument applied was determined by means of Cronbach's Alpha test, obtaining a value of 0.936, which indicates a high level of internal consistency as well as reliability, and validity by means of expert judgment. The results obtained show that there were significant differences between the pre-and post-test after applying the computerized didactic guide and, therefore, it is concluded that this proposal is valid to be implemented in traditional education scenarios and thus ensure the significant learning of Physics in the first year of high school. © 2023 IEEE.

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Smart Antenna Array for Optimal Electromagnetic Energy Capture

2023 , Cumbajín Alferez, Myriam , Sánchez, Patricio , Escobar E. , Gordón C.

Smart antennas are currently one of the most exploited fields in terms of wireless networks, allowing high data transmission capacities, this is achieved by focusing the radiation on the desired direction and adjusting to the environment and conditions in which communications are developed. Smart antennas employ a set of radiating and emitting and combining elements organized in the form of arrangements connected at a common point to guarantee the required power, the signals from these elements are combined to form a moving beam pattern that follows a pattern determined by the user or designer. The consumption of energy within communication systems is considered a big problem and a challenge when carrying out implementations in media where the storage or recharging of the end terminals is complicated by their location, this trend grows with the presence of the Internet of the IoT things, where it is directly dependent on the construction of a large wireless network that allows everything to be interconnected, for this reason there are investigations in the 2.4 and 5.8 GHz bands and represents future work for the 5th Generation (5G) cell phone. The great possibility of collecting electromagnetic energy from densely populated urban areas becomes a great renewable source of power for communication devices for both existing Wi-Fi technology and new technologies such as the 5G network. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

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Knowledge Society and Built Spaces in Ecuador and the Italian Veneto: State-of-Art

2023 , Cueva Ortiz, Sonia , Ordóñez-León A. , Tello-Toapanta Z.

Following the international agreements established at the World Summit on the Information Society, organized by the UN and the Digital Agenda for Latin America and the Caribbean, Ecuador, and the Italian Veneto invest resources destined to transform the production matrix towards knowledge. Among the strategies they use are training human talent and constructing spaces that promote innovation and knowledge production. Thus, clusters are formed in different areas, urban districts are formed, or cities based on knowledge, as in the Ecuadorian case. Spaces that change and impact the usual functioning of the city. This article aims to build a state-of-the-art advanced knowledge society focused on the built spaces of Ecuador and Veneto. For this, three case studies are selected: the Yachay Knowledge City, considered an emblematic project, Loja as a canton in which the change in the production matrix induced by the National Development Plan is reviewed; and Verona as a representative case of the Italian Veneto, which houses knowledge clusters and an interpret part of the European corridor. A mixed methodology supported by a qualitative documentation review from the corresponding governments and scientific articles was used. In addition, a bibliometric review is made using 353 articles obtained from the Scopus database. Advances are checked against your regional standards. Built spaces are found, although not always in accordance with the projected results. The advances in both cases are below the regional, Latin, and European average, respectively. © IJASEIT is licensed under a Creative Commons Attribution-Share Alike 4.0 International License.

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Socio-Spatial Segregation as a Consequence of Commercial Gentrification in the Centrality of Cumbayá, Quito-Ecuador

2023 , Padilla M.J.U. , Zumárraga Salgado, María Daniela , Riascos A.C.T. , Aguilar N.J.M. , Del Cisne Proaño Ruiz K.

The process of urban expansion of Quito has caused the formation of new peripheral centralities, the same ones that offer all the services that the traditional center grants, thanks to public and private investment. In this sense, citizens from wealthy social strata are attracted to reside in these new sectors where consumption, exclusivity and privatization of space become the new way of life that conditions the social dynamics of the territory. This article seeks to identify the types of urban segregation that have occurred from the phenomenon of commercial gentrification evidenced on the edges of the Central Park of Cumbayá between the years 2000 and 2022. For this, a mixed research methodology is used where interviews, photographic archives and surveys allow generating a socio-spatial analysis that evidences this phenomenon. As a result, it was found that commercial gentrification not only has displaced old residents of the sector but also created stigmatization and segregation. Finally, is evidenced that few traditional citizens have resistance to abandon their place of origin and have raised their voices against this urban phenomenon. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.

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Comparative Study in the Comuna Santa Clara de San Millán, Quito - Pedernales Earthquake April 2016

2023 , Ponce, Jorge , Fernandez I. , Bernal F. , Labrada Y.

The Comuna Santa Clara de San Millán is located in the city of Quito, which is a high seismic risk area. On April 16, 2016 an earthquake in Pedernales, Ecuador caused 683 fatalities and substantial material damage [1]. The purpose of the study was to compare the elements of seismic vulnerability manifested in the Comuna Santa Clara de San Millan with those recorded in the Pedernales earthquake. To achieve this, the work evaluates the seismic vulnerability of Comuna Santa Clara de San Millán using qualitative methods, identifies factors in common with the Pedernales earthquake and contrasts the results obtained. The analysis of the data allowed finding typical elements in both sites, such as the construction typology of reinforced concrete frame with unreinforced walls, irregularity in elevation, flat slab with flat beams, and flexible first floor or weak story; it was also identified that 91.7% of the houses reviewed are evaluated as highly vulnerable. The conclusions show the similarity of the structural problems in both places, so similar results could be expected in the event of an earthquake with similar characteristics to the one in Pedernales. This shows the need to continue the seismic vulnerability studies, now using quantitative methods, and to carry out structural reinforcement work in the buildings that require it in the Santa Clara de San Millán Commune. © 2023 IEEE.

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Convolutional neural network oriented to the gesticulation control of an interactive social robot with humanoid aspect [Red neuronal convolucional orientado a la gesticulación de un robot social interactivo con aspecto humanoide]

2019 , Arias E. , Encalada P. , García M. , Granizo C. , Tigre F. , Cumbajín Alferez, Myriam

Social robots present the boom of an infinity of investigations in terms of design and control, these in turn approach with greater intensity to be our partners at home or work, however, still lack similar social interaction skills to the human being. This paper presents the implementation of a convolutional neuronal network algorithm aimed at the arrest of emotions for decision-making in the gesticulation of the social robot with a humanoid appearance. In addition, emphasis is placed on the use of visemas as a unit of labial movement for improve the human-robot interaction in any field in which the social robot can be used, be it teaching, therapies, safe navigation, etc., simultaneously coordinating and similar to the human naturalness the movement of servomechanisms of the mouth and the synthesized audio of the text that the robot gives in response. © 2019, Associacao Iberica de Sistemas e Tecnologias de Informacao. All rights reserved.

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Decolonial Design in Video Games: Subverting Colonial Narratives

2023 , Zambrano H.M.U

This study examined the integration of decolonial design in contemporary video games. Using eight case studies, this research scrutinized cultural representation, narratives and characters, gameplay mechanics, challenges to colonial narratives, and the critiques and limitations of each game. The findings illustrate the transformative potential of decolonial design in creating immersive and inclusive gaming experiences while challenging entrenched colonial narratives. The study contributes to understanding the interplay between video games and decolonial design, and urges developers and designers to embrace decolonial perspectives more actively. © 2023 IEEE.

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University Extension in Architecture: Strategies adopted by COVID-19

2022 , Cabrera Gómez, Juan Daniel

Latin-American universities have reacted during pandemic times by implementing strategies not only virtual (Bedoya-Dorado, Murillo-Vargas, y González-Campo, 2021), the actions adopted over the road have allowed that the programme of extension continues being performed in other ways and to consider as not a requirement the permanent presential link with the community. The goal of the research is to analyze the strategies developed in community projects of University Extension in Architecture developed in seven Latin-American countries. The inquiry presents a methodology with combined strategies (Groat y Wang, 2013) that includes a literature review of primary and secondary sources, cases of study and interviews. This papers contains cuali-cuantitative data related to modes of working, alternatives of virtual communication in social media and elaborated knowledge of seven community projects selected from online activities developed by Architectural Latin-American universities in Costa Rica, México, Colombia, Ecuador, Chile y Argentina. The study found that the compilation of projects done last year and few years ago are the most used modes of working, also, digital material, Facebook pages and YouTube channels are the alternatives for virtual communication and finally, that digital publications and videos are the elaboration (Cano e Ingold, 2020), production (Salvatierra, 2003), (Cohen, 2014), (Martínez y García, 2019) and construction (Bolaños y Aguilera cited by Martínez y García, 2019) of knowledge. © 2022 The authors.

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RF Energy Harvesting System Based on Spiral Logarithmic Dipole Rectenna Array

2023 , Cumbajín Alferez, Myriam , Sánchez, Patricio , Pillajo D. , Gordón C.

This paper presents the development, design, simulation and fabrication of a logarithmic spiral antenna array for the electromagnetic energy collection system independent of frequency, compact in microstrip technology, low cost and operating within a range of frequencies. 1 to 4 GHz, are designed using the CST Studio software that allows modeling and simulating essential parameters such as radiation lobes, VSWR, power, gain, parameter S11. From these simulations the printing is done on an RF4 substrate with a thickness of 1.6 mm, a dielectric constant of 4.4 and an input impedance of 50 Ω. The resonator structure antenna with dimensions of 190 × 210 mm. The frequencies obtained with the rectenna matrix, since it offers good performance for electromagnetic energy harvesting applications that operate in standard frequencies such as GSM, WiFi, LTE which are available in the environment and allows us to collect energy. To obtain electrical energy as part of the design of a frequency rectifier which is optimized with the application of the Schottky diode. In addition, its construction of the rectenna matrix was carried out based on the proposed design, then performance tests and validation of the prototype were carried out using the miniVNA Tiny spectrum verifier, and finally energy storage tests were carried out. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

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Integration of renewable energies in conventional power systems based on computational reliability

2019 , Cumbajín Alferez, Myriam , Ramírez L. , Gordón C.

We report the successful computational reliability of integrating renewable energy into conventional electric power systems. According to renewable resources available in the province of Imbabura in Ecuador, where there are sufficient renewable resources to generate clean energy with three types of technology, such as wind energy, photovoltaic solar energy and thermoelectric energy. We have been able to conduct two fundamental case studies, and then calculate reliability indices using the non-sequential Monte Carlo method using Matlab programming. The reliability indices allowed us to evaluate the reliability of the system. Due to the fact that the lower the reliability index, the higher the reliability of the system. As a result, this paper provides a promising method for increasing the reliability of electric power systems and supporting the future integration of renewable energies. © 2019, Associacao Iberica de Sistemas e Tecnologias de Informacao. All rights reserved.

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