Facultad de Arquitectura, Diseño y Artes

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Universidad Indoamérica

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Extensive Green Facades as an Alternative to the Lack of Urban Greenery
(2025)
Moya Vicuña, Susana
;
Ortiz, Daniela
The accelerated process of urbanization has intensified the loss of natural green areas, directly affecting the quality of life in cities. Semi-natural infrastructures, such as green facades, do not replace natural ecosystems but can mitigate their impacts by providing ecosystem services. This study is based on the hypothesis that the implementation of self-built extensive green facades, using local substrates and a mixture of native and adapted species, constitutes an accessible alternative that urban residents can construct and maintain themselves. Within this framework, the research 2 question is posed: How does the combination of support system type and plant species influence the ecological performance of extensive green facades in Andean urban contexts? Which climatic and construction-related factors determine the economic viability and ease of maintenance and self-construction of extensive green facades? The article is structured in two phases: first, a theoretical review of recent literature on extensive green facades, and second, an experimental phase involving self-built modules implemented in the city of Quito. The results show that, at least under the described climatic conditions—characterized by high solar radiation, prolonged water deficit, and wind gusts reaching up to 4.2 m/s—the selected plant species (<jats:italic>Common Ivy, Passiflora mixta</jats:italic>, and <jats:italic>Pyrostegia venusta</jats:italic>) achieved similar coverage levels during the study period, ranging from 30% to 20% between months 3 and 7, with installation costs below 41 USD per square meter. These findings highlight the feasibility of affordable systems for urban greening and their potential role in promoting resilient and inclusive development, particularly in highly variable Andean climates. However, further research is needed to assess their long-term impact on urban biodiversity, as well as their sustained structural and ecological performance over time.
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The Fractional Brownian Model, Applied in the Credit Placement of the Popular and Solidarity Financial Sector
(2023)
Sánchez Montero, Ivanna Karina
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Tipán, Diego
Previous studies have extensively explored the application of Fractional Brownian Motion in the financial systems of countries. The objective of this study was to evaluate the effectiveness of using Fractional Brownian Motion in credit placement within the popular and solidarity financial sector, specifically in the Savings and Credit Cooperatives of segment 1.A comprehensive analysis was conducted on historical credit placement data from this sector over time, and the Fractional Brownian Motion model was implemented to simulate placement patterns. Several parameters, such as the Hurst exponent, were estimated. The results showed that the application of Fractional Brownian Motion in credit placement within the popular and solidarity financial sector improved the accuracy of credit risk assessment. It revealed long-term dependence patterns and captured the inherent dynamics of the sector. The model demonstrated higher predictive power and better portfolio risk management capabilities compared to conventional methods. The findings suggest that Fractional Brownian Motion is a valuable tool for credit placement analysis, as well as for improving credit risk assessment and portfolio management dynamics. Implementing this model can lead to more accurate credit decisions, fostering the country's economic development. © 2023 IEEE.
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Transportation Oriented Development Method: Literature review
(2023)
Vega, J
;
Balcázar R.
;
Guerra X.
Cities are a wealth production system that attract more and more people in search of a better lifestyle. Migration to cities affects the demand for more housing, services and facilities that, in many cases, imply uncontrolled urban growth, an increase in the number of vehicles, processes of social segregation and effects on natural systems. Indeed, cities are responsible for 70% of greenhouse gas emissions, one of the causes of climate change. Transportation Oriented Development (TOD) is an urban planning model that considers higher density, mixed land use, promotion of public transportation and also promotes a walkable and cycleable environment. This study aims to identify the characteristics of TOD that, from various studies, contribute to the construction of a more efficient and equitable city. The objective is to identify and define the characteristics that build this urban planning approach. A review of the state of the art was carried out in two phases: the first consisted of a bibliometric review based on the Vosviewer software and in the second, 28 articles published in high-impact journals were reviewed according to the Scimago ranking. The results indicate that several of the characteristics of TOD overlap in several studies and that others are not considered at a general level and should be strengthened. © Published under licence by IOP Publishing Ltd.
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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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Suitable electric generator for pico-hydro power plant in ambato–huachi–pelileo water irrigation channel
(2020)
Cumbajín Alferez, Myriam
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Sánchez, Patricio
;
Hidalgo, A.
;
Gordón, C.
We present the analysis of the selection of electric generator suitable for Pico-Hydro Power Plant in the Ambato-Huachi-Pelileo irrigation channel in Ecuador. For which a meticulous literary review has been carried out about the main characteristics of the Pico-Hydro Power Plant as it is the height, the hydric resource, the turbine and the generator. Considering the water resource, which in our case is provided by the Ambato-Huachi-Pelileo irrigation channel, the parameters of low height and slow speed have been taken around 1.6 m3/s, which has allowed us to analyze the generator suitable for the required Pico-Hydro Power Plant. Therefore, the study conducted has allowed us to conclude that the electric generator suitable for the Pico-Hydro Power Plant in the Ambato-Huachi-Pelileo irrigation channel is a radial flux permanent magnet generator that is capable of providing sufficient electrical power with a simple structure, low revolutions, and high efficiency. Also, a Matlab simulation was developed in order to predict the power which is capable of provide the radial flux permanent magnet generator which in this case is 3.8 KW. This work aims to provide several benefits to the society bordering the irrigation channel, such as generating energy for self-consumption as a contribution to the lighting of the channel at no cost to the public in order that it is not dangerous for the passers at night and providing the ability for maintenance works at any time. © Springer Nature Switzerland AG 2020.
Scopus© Citations 3 19
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Thermography applied to buildings as an opportunity to detect thermal bridges. Case study: Ambato, Ecuador
(2024)
Pazmiño, Lucía
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Ranzet Ordóñez
;
Liz Zambrano
This research analyses the existence of thermal bridges in an urban context located at 2700 meters above sea level based on the analysis of thermal images of buildings taken in different ambient temperature conditions. The objective of this research is to expand and update the spectrum of analysis and detection of thermal bridges in an urban context, where environmental conditions change and increasingly reach higher and lower extreme peaks of temperature, which is why it is necessary to establish strategies for mitigation of thermal bridges and stabilization of internal temperatures, the materiality of the building envelope plays a very important role in this study. The methodology applied in this research is of mixed approach, qualitative in relation to the analysis and collection of information with thermal cards and photographs, and quantitative due to the comparison of thermal data obtained from the analysis and energy simulation of the case study. The qualitative results were obtained through the collection of thermographic information, the simulation of the house and focus on the detection of temperature leaks in an urban context of a building built in 2019 with contemporary materials and construction systems, the quantitative results were obtained from the energy simulation, which helped determine the failures in the envelope and thus could improve the energy performance of the building. The study concludes that currently, in spite of knowing the impact generated by climate change, improvements in the configuration of the envelope available in the market are not considered, which generates a negative impact on the perception of thermal comfort inside the building, it is also important to emphasize the importance of energy simulation in construction and design, since this helps to detect problems before building and to be more optimal when remodelling buildings
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Comparative Study in the Comuna Santa Clara de San Millán, Quito - Pedernales Earthquake April 2016
(2023)
Ponce, Jorge
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Fernandez I.
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Bernal F.
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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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Health and Educational Impacts Reduction Using a Supervisory Control and Data Acquisition Web System
(2018)
Davila L.
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Robalino F.
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Gordon C.
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Cumbajín Alferez, Myriam
We present the design and implementation of a Supervisory Control and Data Acquisition SCADA web system of pollution factors such as Nitrogen Dioxide (NO2), Carbon Dioxide (CO2) and Carbon Monoxide (CO) in order to manage them, providing comfort in indoor environments. The SCADA web system allows a comparative analysis of the recorded information with the alert, alarm and emergency levels, established in the Ecuadorian air quality regulations, annex 4 of Book VI of the Unified Legislation of Secondary Legislation of the Ministry of the Environment., The SCADA web system performs the comparison of the registered information, with the physical agents of environmental comfort, established in the ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers) standards. In the process of stabilization of the pollution factors, in indoor environments, air ionizers are used, which emit negative ions to maintain the standardized range in micrograms per cubic meter (3). Finally, we have been able to develop a SCADA web system for controlling pollution factors in indoor environments thanks to the integration of firebase (Android Studio), authentication (Facebook), notification (Database and Web Server), control and monitoring (Android Studio) interfaces. Besides, the SCADA web system allows preventing long term health problems such as allergic reactions, physical exhaustion and respiratory diseases, which influence academic performance during study days in educational institutions. © 2018 IEEE.
Scopus© Citations 1 19
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Classification Tools to Assess Critical Thinking in Automotive Engineering Students
(2024)
Espinosa Pinos, Carlos Alberto
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Amaluisa Rendón, Paulina Magally
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Noemi Viviana Rodríguez Ortiz
Inadequate conflict resolution skills in automotive engineering students can have negative consequences in the workplace. The development of mathematical logical thinking can help students develop critical analysis skills, improve problem-solving ability, develop reasoning skills, and effective communication, enabling them to deal effectively with conflicts and find creative solutions. This research aims to identify predictors of problem-solving ability using classification algorithms. Methodology: In this study, three classification algo-rithms were applied and the KDD process was used to identify predictors of problem-solving ability. The data set includes 60 records of students from the automotive engineering program at Universidad Equinoccial in Quito, Ecuador, to whom three tools were applied: a sociodemographic card, a Shatnawi test related to mathematical logical thinking, and a Watson Glaser test on conflict resolution ability. Results: The best classification model is the K-nearest neighbors’ algorithm and its predictive ability is very good, with a true positive rate versus false positive rate AUC of 0.75, along with a good performance in classifying negative cases. The model can be improved with increased sampling, cross-validation, or hyper-parameter adjustment. Conclusion: Age and mathematical logical thinking are strongly associated with conflict resolution ability. In future research it is important to consider additional variables such as experience in problem-solving projects, technical knowledge and communication skills; to explore the use of more advanced machine learning algo-rhythms; to design specific educational interventions based on the development of mathematical logical thinking; or to compare conflict resolution ability between different engineering disciplines.
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Multi-criteria analysis of turbines for pico-hydro power plant in water irrigation channel
(2020)
Cumbajín Alferez, Myriam
;
Sánchez, Patricio
;
Hidalgo, A.
;
Gordón, C.
We present the Multi-criteria Analysis of turbines for Pico-Hydro Power plant in Ambato–Huachi–Pelileo water irrigation channel. Not only, we have been able to perform a turbine selection using the common requirements like head and flow rate. But also, we have taken into account a multi-criteria analysis by considering: Quantitative criteria, such as Efficiency and Size, combined with Qualitative criteria, such as Maintainability & Serviceability, Portability, Modularity, and Installation Environment requirements. The criteria were analyzed by using the analytical hierarchy process (AHP). We have reviewed different turbine options for being used in a pico-hydropower plants, from the analytical hierarchy process. We have concluded that Michell Banki turbine is the recommendable option in terms of easy build and highly efficient. The study of the requirements for the development of Pico-Hydro Power plant in Ambato–Huachi–Pelileo water irrigation channel in Ecuador will be a promising method for meeting the energy needs using renewable resources and avoiding the conventional fossil fuels or any other approach that affects the environment. © Springer Nature Switzerland AG 2020.
Scopus© Citations 1 36

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