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4. Development of Final Projects in Engineering Degrees around an Industry 4.0-Oriented Flexible Manufacturing System: Preliminary Outcomes and Some Initial Considerations

Author

González, Isaías and Calderón, Antonio José

Abstract

New paradigms such as the Industry 4.0, the Industrial Internet of Things (IIoT), or industrial cyber-physical systems (ICPSs) have been impacting the manufacturing environment in recent years. Nevertheless, these challenging concepts are also being faced from the educational field: Engineering students must acquire knowledge and skills under the view of these frameworks. This paper describes the utilization of an Industry 4.0-oriented flexible manufacturing system (FMS) as an educational tool to develop final projects (FPs) of engineering degrees. A number of scopes are covered by an FMS, such as automation, supervision, instrumentation, communications, and robotics. The utilization of an FMS with educational purposes started in the academic year 2011-2012 and still remains active. Here, the most illustrative FPs are expounded, and successful academic outcomes are reported. In addition, a set of initial considerations based on the experience acquired by the FP tutors is provided.

Published
2018

21. Rabies virus in white-nosed coatis (Nasua narica) in Mexico: what do we know so far?

Author

Puebla-Rodríguez, Paola, primary, Almazán-Marín, Cenia, additional, Garcés-Ayala, Fabiola, additional, Rendón-Franco, Emilio, additional, Chávez-López, Susana, additional, Gómez-Sierra, Mauricio, additional, Sandoval-Borja, Albert, additional, Martínez-Solís, David, additional, Escamilla-Ríos, Beatriz, additional, Sauri-González, Isaías, additional, Alonzo-Góngora, Adriana, additional, López-Martínez, Irma, additional, and Aréchiga-Ceballos, Nidia, additional

Published
2023
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26. Spatial analysis of changes in land use, vegetation and water bodies in the state of Nayarit, Mexico, 1993-2014

Author

Moreno-González, Isaías, Pineda-Jaimes, Noel Bonfilio, Manzano-Solís, Luis Ricardo, Némiga, Xanat Antonio, Ponce-Palafox, Jesús Trinidad, and Jiménez-Ante, Arnulfo Issai

Subjects
vegetación y cuerpos de agua, Cambios de uso del suelo, spatial analysis, análisis espacial, vegetation and bodies of water, change matrix, matriz de cambio, Land use change
Abstract

Resumen Para comprender plenamente la dinámica de cambio de uso de suelo es necesario investigar el cambio neto, los intercambios y las transiciones que ocurren entre categorías de uso del suelo. Por ello, esta investigación explora las tendencias espaciales y temporales de los cambios de uso del suelo, la vegetación y los cuerpos de agua en el estado de Nayarit. Para hacerlo, las series II y IV de INEGI fueron validadas en campo, remuestreadas y sobrepuestas en TerrSet GIS para calcular la matriz de cambio y a partir de ella estimar las pérdidas, las ganancias el cambio neto, así como el cambio total y el intercambio entre categorías. Los resultados indican que, de las 2 783 572.50 hectáreas de la superficie total, el 58.06% no sufrió ningún cambio, mientras que el 41.94% presentó algún cambio en la ocupación del suelo, del cual 15.42% corresponde a intercambios entre las categorías y 26,.52% es un cambio neto. La categoría que ganó más proporción del territorio fue la agricultura; que en 1993 ocupaba el 18.17% y en 2014 pasó al 22.14%. Por el contrario, la selva baja disminuyó de 20.82% a 13.76% durante el mismo período. Abstrac To fully understand the dynamics of land use change it is necessary investigate the net change, exchanges and transitions occurring between land use categories. Therefore, this research explores the spatial and temporal trends of changes in land use, vegetation and water bodies in the state of Nayarit from 1993 to 2014. To do so, the INEGI vegetation maps (series II and IV) for both dates were validated with field observation, resampled and overlaid using TerrSet environment in order to calculate the change matrix, and from it estimate the losses, gains, net changes, total changes and exchanges between land use categories. Results indicate that of the 2,783,572.50 hectares of the total area, 58.06% remained without any change and 41.94% experienced some change. Within such area, 15.42% were exchanges between land categories whereas 26.52% were net change. Agriculture is the category that gained most area; occupying 18.17% of the total in 1993 and 22.14% in 2014. Oppositely low forest has decreased from 20.82% to 13.76% during the same period.

Published
2022

29. Characterization of PEM Fuel Cell in the Context of Smart Microgrids Involving Renewable Energies †.

Author

Calderón, David, Folgado, Francisco Javier, González, Isaías, and Calderón, Antonio José

Subjects
MICROGRIDS, PROTON exchange membrane fuel cells, HYDRIDES, DIGITAL twins, RENEWABLE energy industry
Abstract

Fuel Cells (FCs) constitute an enabling technology for the integration of renewable energies and for the deployment of the next generation of power grids, the so-called Smart Grids/Microgrids. These devices perform the process of converting hydrogen into electricity without emitting pollutant emissions. Characteristic curves, mainly polarization curves, are a paramount resource to study the performance of FCs and to determine accurate models that fit their behavior. This paper presents the characterization of a commercial Polymer Electrolyte Membrane (PEM) FC consisting of 24 cells in series with a nominal output of 500 W, used to supply electricity in a Smart Microgrid involving renewable energies and hydrogen. The process evolution takes place under different laboratory conditions, so voltage, current, and hydrogen flow are measured and plotted to build the polarization curves. The equipment and components involved in the operation of the FC are described, as well as their technical features. Namely, a metal-hydride bottle is used to store the hydrogen that feeds the FC, an electronic programmable load establishes different charge conditions, and a precision multimeter collects the measurements provided by a set of sensors physically coupled to the FC. The characterization conducted in this research is envisioned to be used to build a digital twin of the FC. The developed experimentation and achieved results are described. The obtained results show a proper match between the experimental data and the curves reported in the literature and in the FC datasheet. [ABSTRACT FROM AUTHOR]

Published
2023
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30. IoT Monitoring Solution for a Middle-Scale Grid Powered by PV Solar Tracker †.

Author

Folgado, Francisco Javier, González, Isaías, Calderón, Manuel, Calderón, David, and Calderón, Antonio José

Subjects
INTERNET of things, ELECTRIC power distribution grids, FOSSIL fuels, ENERGY demand management, RENEWABLE energy sources
Abstract

The scarcity of fossil fuels and the increase in energy demand, which is growing year after year, have led to the rapid development of technologies and systems for harnessing renewable energy sources (RES). Among these, photovoltaic (PV) energy and its associated technologies stand out for their adaptability and versatility, highlighting among the rest for being one of the most efficient methods for harnessing energy from RES. Beyond the generation processes, the problems derived from the management and monitoring of these systems are outlined. This paper develops the design and implementation of a system based on Internet of Things (IoT) applications for a medium-scale power grid located within the university campus of Badajoz, Extremadura. This grid is partially powered by PV energy by means of a set of 56 panels, with a total power of 60 kW, installed on a solar tracker. The system presented develops the functions of acquisition, management, and monitoring of data from the solar tracker, the transformation center, and the consumption derived from the activities carried out at the School of Industrial Engineering, whose electricity supply comes from the two previous sources. The elements involved in the physical installation are described, as well as the sensors responsible for data acquisition. Regarding the software, the IoT programs used for the development of the system are presented, as well as their intercommunication and handling. Finally, the proposed system is shown under real operation conditions. [ABSTRACT FROM AUTHOR]

Published
2023
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35. Conocimiento de la COVID- 19, afrontamiento y resiliencia en mujeres mexicanas: comparación por niveles de estrés

Author

Becerra Gálvez, Ana Leticia, Pérez Ortiz, Alejandro, Pérez Bautista, Yuma Yoali, Lugo González, Isaías Vicente, Franco Moreno, América Genevra, and Medina Jiménez, Erick Alberto

Subjects
coping, stress, resiliencia, estrés, COVID-19, mujeres, women, resilience, afrontamiento
Abstract

Background: The psychosocial effects derived from the COVID-19 pandemic have represented a challenge for the population worldwide. Stress is a frequent problem reported by women, impacting the strategies they use to deal with problems in daily life and their ability to recover from this critical phenomenon. Objective: The objective of this study was to evaluate the relationship between stress levels, knowledge about COVID -19, ways of coping, and resilience in women. Method: A non-experimental, cross-sectional, and correlational study was carried out in a group of 386 Mexican women through a format that was distributed on social networks. Results: The data suggest that the higher the level of knowledge about COVID-19, the greater the perceived stress. High stress is positively and statistically significantly related to coping style, denial (r = .245; q = .20) and cognitive-reflective analysis (r = .303; q= .21). Low levels of stress are negatively and statistically significantly associated with a weak effect size with factors like social competence (r= -.198; q= .11) and family support (r = -. 227; q = .16). Conclusion: Stress affects women considerably due to work overload and interpersonal factors. This study offers the possibility of knowing the emotional state of women in times of COVID-19. RESUMEN Introducción: Las afectaciones psicosociales derivadas de la pandemia por COVID-19 han representado un reto para la población a nivel mundial. El estrés es uno de los problemas emocionales mayormente reportados en las mujeres, impactando en las estrategias que emplean para enfrentar los problemas de la vida cotidiana y su capacidad de recuperarse ante este fenómeno crítico. Objetivo: El objetivo de este estudio fue evaluar la relación entre los niveles de estrés, el conocimiento sobre la COVID -19, los estilos de afrontamiento y la resiliencia en mujeres. Método: Se realizó un estudio no experimental, transversal y correlacional en el que participaron 386 mujeres mexicanas las cuales respondieron un formato que se diseminó en redes sociales. Resultados: Los datos sugieren que a mayor nivel de conocimientos sobre la COVID-19 mayor estrés percibido. El estrés elevado se relaciona de manera positiva y estadísticamente significativa con el estilo de afrontamiento, negación (r=.245; q=.20) y análisis cognitivo-reflexivo (r=.303; q=.21). Niveles bajos de estrés se asocian de forma negativa, estadísticamente significativa y con un tamaño del efecto débil con las variables competencia social (r=-.198; q=.11) y apoyo familiar (r=-.227; q=.16). Conclusiones: El estrés afecta considerablemente a las mujeres debido a la sobrecarga de trabajo y a factores interpersonales. Este estudio ofrece la posibilidad de conocer el estado emocional de las mujeres en tiempos de la COVID-19.

Published
2022

42. Propiedades psicométricas del Índice de Severidad de Insomnio (ISI) en adultos mexicanos.

Author

Balam Álvarez-García, Horacio, Vicente Lugo-González, Isaías, and González Betanzos, Fabiola

Abstract

Background: Insomnia is the sleep disorder with the highest incidence worldwide. It is estimated that this condition increases the risk of developing psychiatric, neurological, and cardiovascular problems. Due to this, it is important to have brief, reliable and valid psychometric instruments that allow health personnel their timely detection in first level health centers. Objectives: Analyze the psychometric properties of the Insomnia Severity Index (ISI) in its version adapted to Spanish in a sample of Mexican adults. Methods: The sample consisted of 310 adults, 223 (71.9%) women and 87 (28.1%) men. The comparison of four ISI measurement models of one, two and three factors and a bifactor model was carried out, its internal consistency was analyzed, an analysis of invariance by sex and correlation analysis with the Athens and Epworth scales. Results: The ISI bifactor model with a general factor (G) and a specific factor for insomnia impact (I) showed the best fit indices (χ2= 29.48, gl = 11, SRMR= 0.03, CFI= 0.98, TLI= 0.96, RMSEA= 0.07), and demonstrated configural, metric, and scalar invariance by sex. Adequate reliability was demonstrated by Omega coefficients (General: ωG= 0.86, Impact: ωI= 0.86) showed adequate reliability; the scale showed very strong correlations with the Athens scale (rAGoverall=0.84; rAImpact=0.75) and weak to moderate correlations with the Epworth scale (rEGeneral=0.39; rEImpact=0.44). Conclusions: The ISI bifactor version in Spanish presents adequate psychometric properties for the measurement of insomnia and, as it is a brief tool, it can be used at different levels of health care. [ABSTRACT FROM AUTHOR]

Published
2023
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48. Conductas de adherencia al tratamiento y control del asma: El rol de la percepción del tratamiento

Author

Lugo-González, Isaías and Vega-Valero, Cynthia

Subjects
Control del asma, Percepción del tratamiento, Modelo Necesidad-Preocupación, Conductas de adherencia
Abstract

Background:In the case of asthma, one of the problems faced by patients and health services is the poor adherence to maintenance medication, which limits disease control. Treatment perception (necessity for treatment and concern for adverse effects of treatment) has been one of the psychological variables that has been best associated with this problem. The aim of this study was to evaluate, compare and relate the treatment perception, adherence behaviors and disease control in Mexican adults with asthma.Method:267 adults with asthma from Mexico City participated, who responded to an evaluation battery.Results:The main results show that patients with high perceived necessity of treatment and low concern about the adverse effects of treatment are more adherent and have better asthma control than patients with high necessity and high concern with low necessity and low concern. In addition, it was identified that a high concern favors poor adherence and this, negatively impacts asthma control.Conclusion:To improve adherence, it is necessary to increase the need to reduce concern. Introducción:En el caso del asma, una de las problemáticas que enfrentan pacientes y servicios de salud es la falta de adherencia al medicamento de control, la cual limita el control de la enfermedad. La percepción del tratamiento (necesidad por el tratamiento y preocupación por efectos adversos del tratamiento) ha sido una de las variables psicológicas que mejor se ha asociado con esta problemática. El objetivo del presente trabajo fue evaluar, comparar y relacionar la percepción del tratamiento, las conductas de adherencia y el control de la enfermedad en adultos mexicanos con asma.Método:Participaron 267 adultos con asma de la Ciudad de México, los cuales respondieron una batería de evaluación.Resultados:Los principales resultados mostrando que los pacientes con una percepción de mayor necesidad por el medicamento y una menor preocupación por los efectos adversos del tratamiento son más adherentes y tienen un mejor control del asma que los pacientes con alta necesidad y alta preocupación y con baja necesidad y baja preocupación. Además, se identificó que, una elevada preocupación favorece la falta de adherencia y ésta, impacta negativamente en el control del asma.Conclusión:Se quiere mejorar la adherencia, se necesita incrementar la necesidad para disminuir la preocupación.

Published
2020

50. The Brief Behavioral Activation Therapy for Depression in women with breast cancer: clinical cases

Author

Becerra Gálvez, Ana Leticia, Reynoso Erazo, Leonardo, Lugo-González, Isaías Vicente, Becerra Gálvez, Ana Leticia, Reynoso Erazo, Leonardo, and Lugo-González, Isaías Vicente

Abstract

Introduction: Cancer often causes challenges for those who suffer it, leading to a decreasein overall quality of life and emotional disturbances such as depression. The experience of living withcancer contributes to the loss of daily routines, fostering isolation and avoidance behaviors. Objective:To determine the efficacy of an intervention based on the revised protocol of Brief BehavioralActivation Therapy for Depression (BATD-R) on symptoms of depression and health-related qualityof life (HRQL) in women with breast cancer. Method: Six women in remission stage of breast cancerwith an age range of 31 to 75 years (M = 50,50; SD= 15,7) from three tertiary referral hospitals inMexico City participated. The intervention consisted of six weekly sessions of one hour. The procedureincluded: psychoeducation and presentation of treatment, selection of activities considering areasof life and values, selection of activities-goals, establishment of duration / frequency of the chosenactivities and weekly monitoring. With the use of functional behavior analysis, the use of othercomplementary techniques was determined. Results: The six patients presented a clinically significantdecrease according to the BDI-II scores (RCIJT = 2.55-4.58). Patients two, four and five were those whopresented better results in HRQL and a significant clinical change (RCIJT = -2.01 to -5.44). Conclusions:The BATD-R protocol derived from the Behavioral Activation model, turns out to be a very useful,flexible and easy to use tool in hospital settings., Introducción: El cáncer suele provocar desafíos para quien lo padece, genera un decremento en la calidad de vida y alteraciones emocionales como la depresión. La experiencia de vivir con cáncer contribuye a la pérdida de rutinas diarias, favoreciendo el aislamiento y comportamientos de evitación. Objetivo: Conocer la eficacia de una intervención basada en el protocolo revisado de la Terapia de Activación Conductual Breve para la Depresión (BATD- R por sus siglas en inglés) sobre los síntomas de depresión y calidad de vida relacionada a la salud (CVRS) en mujeres con cáncer de mama. Método: Participaron seis mujeres en etapa de remisión del cáncer de mama con un rango de edad de 31 a 75 años (M=50,50 DT=15,7) de tres hospitales de tercer nivel de la Ciudad de México. La intervención estuvo constituida por seis sesiones semanales de una hora. El procedimiento incluyó: psicoeducación y presentación del tratamiento, selección de actividades considerando áreas de vida y valores, selección de actividades-metas, establecimiento de duración/frecuencia de las actividades elegidas y monitoreo semanal. Con el uso del análisis funcional de la conducta se determinó el empleo de otras técnicas complementarias. Resultados: Las seis pacientes presentaron una disminución clínicamente significativa según las puntuaciones del BDI-II (RCIJT= 2,55-4,58). Las pacientes dos, cuatro y cinco fueron quienes presentaron mejores resultados en la CVRS y un cambio clínico significativo (RCIJT= -2,01 a -5,44). Conclusiones: El protocolo BATD-R derivado del modelo de Activación Conductual, resulta ser una herramienta muy útil, flexible y fácil de utilizar en contextos hospitalarios.

Published
2020

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