Proceedings

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A 2-tuple fuzzy linguistic method for risk analysis in software process models
(LACCEI, Inc., 2019-07) Zulueta, Yeleny
Así como el proceso de software es evolutivo y dinámico, la gestión de los riesgos también debe ser evolutiva y dinámica. En este artículo se propone un método lingüístico difuso para el análisis dinámico de riesgos que puede ser empleado en modelos de procesos de software iterativos y/o dirigidos por los riesgos. El método propuesto está basado en la toma de decisión dinámica por lo que permite tener en cuenta las variaciones en la exposición a los riesgos del proyecto de software, ya sea por la aparición de nuevos riesgos o porque lógicamente y eficazmente, el equipo ha logrado mitigar algunos. Una uninorma extendida para 2-tupla lingüística es utilizada como operador en el cálculo de la evaluación dinámica, por lo que no es necesario guardar toda la información del problema de decisión a lo largo del tiempo. El modelado de la incertidumbre relacionada con los riesgos mediante el modelo de representación difuso basado en 2-tuplas lingüísticas permite realizar procesos de computación con palabras y así obtener resultados lingüísticos cercanos al lenguaje natural y de fácil interpretación.
A comparative cost analysis of electricity produced by a diesel and a solar-PV generation system for an energy load located in Chimbote, Ancash-Perú.
(LACCEI Inc., 2021-07) Nahui-Ortiz, Johnny; Quillos-Ruiz, Serapio; Escalante-Espinoza, Nelver; Sotelo-Valer, Freedy
In this research work, a comparative cost analysis of electricity produced by a non-renewable and a renewable energy system is carried out. A 165.4-kWh daily electric load is established on the basis of a community-type profile, with a 20.5-kW peak load and a load factor of 0.34. Using simulation built-in features from HOMER Pro, optimum sizing for both a diesel-based system and a solar photovoltaic system is carried out. A proposed non-renewable energy supply alternative consists of a 23-kW diesel generator, a 40-kWh storage capacity, and a 5.8-kW DC-AC converter. On the other hand, a proposed renewable energy supply alternative consists of a 131-kW solar PV generation, a 427-kWh storage capacity, and a 24.7-kW DC-AC converter. A levelized cost of electricity (LCOE) approach is used for comparison purposes. Also, net present cost (NPC) is calculated for the proposed energy supply alternatives. It is concluded that for comparative cost analysis key aspects, such electric load profile and its correlation with solar radiation availability on hourly basis, play a significant role. However, the incorporation of environmental benefits could overcome some economic feasibility barriers in the near future.
A comparative cost analysis of electricity produced by a diesel and a wind power generation system for an energy load located in Chimbote, Ancash-Perú.
(LACCEI Inc., 2021-07) Nahui-Ortiz, Johnny; Quillos-Ruiz, Serapio; Escalante-Espinoza, Nelver; Sotelo-Valer, Freedy
In this research work, a comparative cost analysis of electricity produced by a non-renewable and a renewable energy system is carried out. A 165.4-kWh daily electric load is established on the basis of a community-type profile, with a 20.5-kW peak load and a load factor of 0.34. Using simulation built-in features from HOMER Pro, optimum sizing for both a diesel-based system and a wind power system is carried out. A proposed non-renewable energy supply alternative consists of a 23-kW diesel generator, a 40-kWh storage capacity, and a 5.8-kW DC-AC converter. On the other hand, a proposed renewable energy supply alternative consists of a 135-kW wind power generation, an 821-kWh storage capacity, and a 49.2-kW DC-AC converter. A levelized cost of electricity (LCOE) approach is used for comparison purposes. Also, net present cost (NPC) is calculated for the proposed energy supply alternatives. It is concluded that for comparative cost analysis key aspects, such electric load profile and its correlation with wind speed availability on hourly basis, play a significant role. However, the incorporation of environmental benefits could overcome some economic feasibility barriers in the near future.
A Culture of Quality in Higher Education
(LACCEI Inc., 2020-07) Ortiz Herrera, Jorge; Cadena-Vela, Susana; Padilla-Verdugo, Rodrigo; Gualli, Tania; Garcia-Serrano, Irma
Abstract..- In Ecuador, the discussion on the quality of higher education has taken place in the last fifteen years, although the initial motivation is present in the times of application of evaluation processes for the purpose of university accreditation, these events have been carried out on a mandatory basis on three occasions. Higher education institutions try to obtain the best results and thus institutional accreditation; however, in the intervening times efforts are dissipated or forgotten. For this reason, universities must reorient their teaching, research, networking and management activities so that they are carried out with quality on a permanent basis. The responsibility for good management is fundamentally in the hands of the authorities; however, the participation of the entire educational community is also necessary in order to promote what is called "quality culture". For the concretion of this culture of quality, a system of quality management is required as a tool that offers the possibility of evaluating oneself, having timely and precise information for university planning and action. The system itself does not constitute the exercise of quality for higher education, but is the tool that allows actors to focus with quality in the practice of their daily functions and thus create a quality culture that allows the university to achieve high standards of compliance in their substantive functions. One way to do this is to validate a system of indicators in various dimensions as a valid, living and dynamic proposal, which demands the participation of all sectors involved while giving them feedback, in favor of strengthening the culture of quality in universities
A Digital complaint and reporting system for gender related violence in Peru
(LACCEI Inc., 2021-07) Armas, Jimmy; Ochoa Yañez, Diego Daniel; Silva Bocángel, Jean Marco; Gonzalez, Paola A.
In this article, we developed a low-cost digital innovation to improve the process of handling legal complaints for cases related to gender violence, especially those related to femicide. Gender-related violence or femicide has been a widely spread health problem throughout the world (refs). In Peru, this violence affects approximately 30-40%(?) of women at some time in their lives (refs). In 2020 (?) the National Police registered approximately 222 234 complaints related to family violence; 30% of these cases were registered through the Women's Emergency Center, a center for women requesting judicial, psychological, and social help. Studies have shown that many women are discouraged to report violence and harassment because the complaint system are often lengthy and ineffective. At the start of this study, we found that several steps of this system were still based on a paper-based system and often prone to error and delays. For this reason, we propose a a low-cost digital solution to improve the registration process of these complaints. The solution presented consists of four components: 1) A mobile application exclusively designed and targeted to women victim of violence, 2) A web application, aimed at those responsible for the managing the registration process of the complaint, 3) Back-end, and 4) Integration with devices of early warning. The proposed solution was piloted and validated with a small sample of 15 women between the ages of 19 and 43 who were victims or witnesses of gender-related violence, an officer from the National Police of Peru and a social worker from the Women's Emergency Center.20 simulations of complaint registers were carried out using the proposed solution. The preliminary results obtained during the validation phase showed that the average time used to register the complaints was and the users’ perceptions of the proposed system revealed that the system could provide transparency and ensure protection in the complaints process.
A Framework for the Selection or Design of Production Planning and Control Systems: A Case of Application
(LACCEI, Inc., 2019-07) Buestan, Marcos; Lopez, Maria; Van Landeghem, Hendrik
Choosing and designing production planning and control systems are critical tasks because they provide the means to translate the corporate strategy into direct shop floor actions. However, it is not always easy to find the correct systems for a application. This difficulty occurs if the company does not present the necessary criteria for the system, in which case the expected benefits may not be achieved. This study proposes a framework to support the selection or design of a production planning and control system (PPCS) based on the current characteristics of a company. Using relevant parameters, companies are categorized and posteriorly evaluated, identifying the negative and positive relations between the company characteristics and the principles of the evaluated PPCSs. To test the proposed framework, we apply it to determine a suitable system for Ecuadorian small and medium-sized enterprises. Simplified drum buffer rope (S-DBR) approach is found to be a suitable PPCS, and the framework suggested some necessary enhancements to resolve potential weaknesses that could arise during the application of S-DBR.
A Frugal Technological Model for Leukemia Detection Using Digital Microscopy
(LACCEI, Inc., 2019-07) Armas, Jimmy; López Prieto, Juan; Purizaca Pérez, Miguel; Gonzalez, Paola
In this paper, we propose a low-cost technological model for optimizing the detection process of leukemia using digital microscopy. The model is targeted to be used in remote areas in developing countries where availability of resources is an issue. This model applies the canny algorithm on a bank of images of normal and abnormal microscopic cells. The proposed model includes the capture, digitization, and analysis of microscopic samples, Fives phases are included in this model: 1. Data collection; 2. Data capture; 3. Image processing; 4. Cell classification; 5. Display of results. The model was preliminary validated with five blood samples from three men and two women in different age categories. All these samples were validated by the Head of Clinical Pathology at a public hospital in Callao, Lima, Peru. The results showed that a 90.5% effectiveness rate of white blood cell identification was obtained. This results aims to provide an additional and accurate tool to detection of potential leukemia.
A Hybrid Framework HWF-PR in Software Engineering: MySpot-PR an Application
(LACCEI, Inc., 2019-07) Alvear, Alcides; Cruz, Jorge L.; Montañez, Karla M.
In software engineering there are many models to develop a completely functional application. Many of them have been sufficiently reported in the current literature, which include traditional, agile methodologies and some hybrids. The main objective of this work is to implement the Hybrid Work Framework HWF-PR in a specific case study, with the participation of two development groups, one control group using the extreme programming XP and, another experimental group using HWF-PR, in order to establish differences that allow to determine the benefits of the framework. The groups are composed of students of the computer engineering program of the UAGM of Puerto Rico. The foundation of this method is to apply the Shewhart principle, agile methods, agile practices and usability. Developing software through this methodology would represent a saving of time and effort. The flexibility to make corrections at any time can represent the improvement of ideas and the development of a better product.
A Low-Cost Electrical Rotary Machinery Fault Detector
(LACCEI, Inc., 2019-07) Hernandez, Omar; Martinez Tirado, Carlos; Anibarro, Pedro; Rodriguez, Hector; Labrador, Miguel; Vergara-Laurens, Idalides
Nowadays, electrical rotary machinery is widely used in production lines, turning machines, ventilation and air conditioning systems. For continuous production and reliability, vibration analysis is commonly used for maintenance and failure detection. There are several tools that help users to diagnose faults but cannot be used due to high costs and other limitations. This project presents a low-cost diagnostic system for electrical rotaries based on vibration analysis. The proposed system includes a vibration sensing device, which is placed in each machine, containing a low cost accelerometer, an amplification circuit, and a micro controller that sends the data to an Android application using Bluetooth technology. After receiving the data, the Android application computes the Fast Fourier Transform, and analyzes these data in order to detect and identify the fault. Once the fault is identified, it is displayed in the application along with a set of useful recommendations to repair the machine, prevent major degradation and or damages. The Android application also gives the user the option to save the diagnostics and see a history of previous reports for any registered machine.
A Methodology for Cleaner Production Implementation at a University Campus in Lima, Peru
(LACCEI, Inc., 2019-07) Nahui-Ortiz, Johnny; Mendoza, Alejandro; Sotelo-Valer, Freedy
The main objective of the current study is to propose a methodology for implementation of a Cleaner Production program at the campus of the National University of Engineering in Lima, Peru. Documentation review was carried out with regard to principles and applications of Cleaner Production, identifying strategies associated with its implementation in processes, products, and services. A university campus was characterized, being the target of the present study, as a mix of processes with entries, operations, and outputs related to the distinct schools and departments. Relevant usages and consumptions of electricity, fuels, water, and paper were identified among others. Also, guidelines for further recollection of quantitative data as well as the unit costs of their utilization were established. A methodology for implementation of a Cleaner Production program at a university campus was elaborated on the basis of five general steps: 1) Planning and Organization, 2) Diagnostic, 3) Feasibility Study, 4) Implementation and Monitoring, and 5) Continuous Improvement.
A Model to Assess Efficiency in e-Training for Significant Learning (e-TSL)
(LACCEI Inc., 2018-09) Capacho, José; Salazar, Augusto; Jimeno, Miguel
This article presents an evaluation model to assess the efficiency of e-Training for Significant Learning (e-TSL). The model is useful for assessing student learning in virtual spaces. The process of model building is based on the Dembo learning teaching model, the systemic approach to evaluate virtual learning from Dr. Khan, and a cybernetic model to evaluate virtual learning environments. This model was built considering the theories of Computer Science and Education Science and its structure is composed of 6 dimensions, 32 characteristics, 84 variables and 153 indicators. The validation of the model was done internationally with participants from Europe, America, Australia, Asia and Africa achieving a total of 1,207 responses, for which the multilingual system (English-Spanish) SIDEC was built. Taking into account the collected responses and with a confidence level of 90%, the components of the e-TSL model were accepted.
A Modular Approach to the Development of a Fault Tolerant Free-Vehicle
(LACCEI Inc., 2018-09) Rojas, Danilo; Jimenez, Manuel; Schmidt, Wilford
Free-vehicles are autonomous instruments that perform oceanographic observations. They have been used for decades to study not only the seafloor through sediment samples or fish traps, but also ocean properties through water samples and different types of sensors. This paper presents the Control Computer redesign process of a free-vehicle using modular design techniques. The modular approach allows for grouping the system components into different subsets that are implemented as modules in the new free-vehicle design. A data sample is presented to demonstrate the functionality of the new design.
A Multi-strategy Recommendation Algorithm to Retrieve Broken Hyperlinks
(LACCEI Inc., 2018-09) Lozano, Emiraldo; Calderón Moreno, Roger; Enciso, Javier
Broken links are a growing problem on the Internet that affects all kinds of websites; especially as sites age and contain a reference to content that is no longer available, or has changed its location. In this work a multi-strategy recommendation algorithm to retrieve broken hyperlinks is presented.
A Parametric Modeling Instructional Tutorial for Teaching Visualization of Engineering Mechanics
(LACCEI, Inc., 2019-07) Schumacher, Pam; Sealy, Winston
Communication is paramount for relaying information. Manufacturers rely heavily on business practices that are clearly communicated. As new products are designed, drawings and sketches are utilized to communicate form, fit, and function. Visualization techniques and practices are critical for understanding and effective communication. This paper presents an instructional tutorial for utilizing parametric modeling to enhance the design and visualization of engineering mechanics. Real world examples are modeled and simulated using Creo Parametric ver. 4.0.
A Proposal for An Air Quality Monitoring System for Cartagena de Indias
(LACCEI, Inc., 2019-07) Gonzalez Campo, Maria Jose; Serrano, Jairo; Martinez Santos, Juan Carlos
This paper presents an Air Quality Monitoring System for the city of Cartagena de Indias. The goal of this system is to monitor the air quality in the city and to establish the current state of the air Cartagena's citizen breathe. Data is going to be acquired through a sensor network, and the information is going to be displayed on web or mobile application allowing access from anywhere in the world to anyone that may be interested. It is expected that the availability of this information allows research centers, educational institutions, and government to design plans for prevention and improvement of the air quality in the city based on historical and real-time data.
A Proposal for the Discovery of System Goals from Business Process Models
(LACCEI, Inc., 2019-07) Jaramillo Franco, Aldrin Fredy; Urrego, German
A framework of generic categories of process activities is adopted as a framework of generic categories of system goals in order to guide the reasoning of system analysts and stakeholders for the discovery of system goals from business process models. The categories of process activities are organized in four essential aspects of the process concept: input, evolution, evaluation and decision and output. These categories are characterized by verbs which offer a semantic diversity that clarifies the field of reasoning and guides the discovery of goals. This article proposes an approach for obtaining system goals from business process models; the proposal is illustrated with a diverse and rich set of pertinent goals discovered for a system supporting a “booking a flight” process.
A real-time pattern recognition module via Matlab-Arduino interface
(LACCEI Inc., 2020-07) Suarez, Oscar J.; Hernánez Díaz, Nicolás; Pardo, Aldo
Pattern recognition is a relevant research area in artificial vision, where several methods have been proposed in the last 50 years. This paper presents a real-time pattern recognition algorithm for an addition operation through two six-sided dice using an Android camera device, an IP webcam app, a graphical user interface (GUIs) from Matlab, and Arduino technology. The methodology to develop the interface and the communication between Matlab software and Arduino technology is presented. To evaluate the performance of the proposed methodology, a real-time implementation using an Arduino Mega 2560 board and Matlab is illustrated.
A Recovery Prototype based on Network Coding and Software Defined Networks
(LACCEI Inc., 2018-09) Mejia, David; Bernal, Ivan; Pilco, Victor
This document presents a prototype that uses Network Coding as a tool for the recovery of lost packets in a butterfly network which is implemented using Software Defined Networking (SDN). The system is based on Ryu as the SDN controller; modules were developed for setting up the rules of the switches that structure the butterfly network, one without network coding and another for using it. Two complementary applications were developed, one for performing the tasks associated to network coding that requires generating new packets and the other for performing the necessary tasks to recover lost packets. Finally, the results of several tests performed using the prototype are presented and discussed and conclusions are drawn
A Reliability Study of the Transmission Expansion Plan of Ecuador
(LACCEI Inc., 2020-07) Urquizo, Javier; Alvarez, Hellen; Cajape, Ricardo; Plazarte, Juan
The objective of this article is to evaluate the reliability of the Ecuadorian National Interconnected System (acronym in Spanish SNI). It focuses on the sufficiency of the network and considers the projected changes in accordance with the proposals for the expansion of the transmission of the Electrification Master Plan for 2018 and 2025, under conditions of maximum demand. Two alternative methods were proposed for this analysis: the Exhaustive State Enumeration, and a Monte Carlo probabilistic simulation. As a decision parameter for the choice of one of these methodologies, we used the results of a preliminary test on the IEEE fourteen bus standard model, and determined that the best method for the evaluation of the national system was the Monte Carlo simulation. Using this method, our results demonstrated the reliability status of the SNI. The key theoretical elements for the quantification of reliability correspond to the reliability indexes, and we consider the energy index of reliability (EIR), the loss of load expected value (LOLE), the loss of load probability (LOLP), the expected power not supplied (EPNS), the expected energy not supplied (EENS), the frequency of interruption (FOI), and the duration of interruption (DOI). These data were obtained for the years 2018 and 2025, by analysing the transmission system and the composite level of transmission generation for a period of 20 years , with convergence criteria of 0.05%. Finally, the computational tool proposed within the development of this project helped determine that the plan of action exposed in the Electrification Master Plan does help to improve the reliability of the system between the years of study. However, based on the analysis of the very high numerical values seen in the reliability indexes, it should be noted that, although Ecuador is in the process of improving its electrical system, improvements will still be needed beyond 2025. This indicates that it is advisable to continue to conduct studies on the problems of the currently developing Ecuadorian system
A smart wearable system to manage anxiety of college students
(LACCEI Inc., 2021-07) Armas, Jimmy; Angeles La Torre, Carlos Gerald; Angeles La Torre, Dennis Armando; Gonzalez, Paola A.
We developed a smart wearable system to identify, monitor and reduce levels of anxiety of college students by using a wearable device and a mobile application. Anxiety is one of the most frequent mental health problems of college students (refs). Prior studies suggest that anxiety is related with low study performance, college attrition, heart-related condition, and depression (refs) Despite the availability of college resources offered to assist students (e.g., counselling services), only 1 in 5 students with anxiety issues receives an adequate treatment (1). Two highlighted reasons for this gap are stigma and preference for self-mutual help (2). The proposed wearable system includes a wearable device and a mobile application with embedded recommended activities to reduce anxiety levels of college student. The solution has 5 components: 1) Gathering of physiological variables though the wearable, 2) Integrating the wearable and the mobile application, 3) Storing data, 4) Integrating the solution and web application and 5) Monitoring, treatment and identification of anxiety levels. The system was validated at an University in Lima, Peru with [enter number] students between 18 and 23 years old. The preliminary results indicated that the system could identify level of anxiety effectively (??)% of the cases and help in reducing student’s anxiety level.