Mauricio Chávez-Pichardo

Chávez-Pichardo, Martínez-Cruz, Dorantes-Benavidez, and Arenas-Resendiz apply the Life Cycle Methodology to design a computer program that provides efficient solutions to ODE, with the aim of solving practical problems that require the use of this type of equation, Cortés-Rascón, Patiño-Ortiz, Patiño-Ortiz, and Nuñez-Martinez present an information system designed to optimize the quality of service offered by MVNOs in the context of next-generation mobile networks, Paredes-Páramo, Trejo Martínez, Jiménez-Jarquin and López-Razo propose a systemic approach based on the Soft Systems Methodology (SSM), complemented by data analytics and visualization tools (Tableau), to construct and validate institutional indicators that strengthen academic management; Acosta-Mendizábal, Dorantes Benavidez, Guzmán-Barrera, and Estrada-Acosta present a new non-experimental, cross-sectional model simulated in a control design using RNA and in a MATLAB programming environment interacting with a Raspberry Pi computer, Alonso-Reyes, Marín-Villanueva, Ramos-Yáñez, and Vázquez Díaz present the results of a study measuring the level of adoption of information technologies and computer systems in the operations and resource management of 25 micro and small enterprises (MSEs) located in the municipalities of Atlautla, Ozumba, and Tepetlixpa in the eastern part of the State of Mexico, Villafaña-Rivera, Hernández-Simón, Flores-Amador, and Peña-Hernández provide a methodological framework that is applicable and replicable in other study areas with similar characteristics to generate indicators for community-driven strategy development, Fonseca-Pujals, Fleites-Díaz, Mira-Segura, and Cuevas-Olascoaga address the ergonomic deficiencies present in graduate classrooms that affect students’ physical well-being and academic performance, García González, García-García, Pérez-Enríquez, and Castrejón-Sánchez describe the preparation of a zinc oxide (ZnO) and carbon composite; the ZnO was synthesized by electrolysis, with used ground coffee (UGC) added to the electrolytic medium, and finally calcined at 400°C for 30 minutes. ZnO, carbon (C), and the composite were synthesized and characterized. Antonio-Javier, Mulhia-Romero, Nava-Rogel, and Montes de Oca-López analyze the organizational impacts resulting from the forced implementation of telework from a systemic perspective.

Based on analytical methods and without the use of complex arithmetic for the solution of algebraic equations from second- to fourth-degree and other practical methods such as the Rational Root Theorem and the Newton-Raphson Method for the solution of fifth-degree equations, the Life Cycle Methodology is applied here to design a computer program that gives efficient solutions to quintic equations, in order to solve practical problems that require the use of this kind of equations.

La importancia del agua y el rol esencial que desempeña, no solo en el crecimiento humano, sino también en la vida en general, hacen necesario erradicar este problema. Ya que no es un problema local si no de índole mundial. El mundo atraviesa una de las crisis más fuertes y preocupantes que es la falta de agua potable en muchas regiones, donde se encuentra incluido México. Este problema debe ser erradicado dada la relevancia del agua y el papel fundamental que juega, no sólo en el desarrollo humano, sino de la vida en general. En el municipio de Chimalhuacán, situado al este de la Cuenca de México, se pueden ver efectos medioambientales como la compactación del subsuelo y las alteraciones en la cantidad y calidad del agua que extraen los pozos que abastecen parcialmente a la Ciudad de México. la presente investigación expone de manera específica la necesidad de extraer aguade pozos, así como las consecuencias medioambientales que resultan de una explotación excesiva debida a la ausencia de regulación gubernamental. Se analizan los sistemas de flujo del agua subterránea para determinar sus causas primordiales, sus efectos y los posibles controles al impacto ambiental que producen su extracción intensiva. Además, se tienen en cuenta los aspectos jurídicos más significativos para la construcción de nuevos pozos.

In this paper, we bring forth several new general formulae in the classic study of conics in the Analytic Geometry: the coordinates of all vertices and focal points of arbitrary parabolas, ellipses, and hyperbolas; lengths for all latera recta from any non-degenerate conic section; equations describing straight lines whose limited-slope contents stand on exactly equal footing as focal axes, latera recta, and directrices from every non-degenerate conic section; and, respectively, these ones characterizing asymptotes for each non-degenerate hyperbola. All these general results work regardless of whether the conics in question are rotated or not on the Cartesian plane, because all of them depend only on the coefficients of the general conic equation, making the rotation angle irrelevant for the analysis of conic sections.

Los destiladores tienen diversas aplicaciones, entre ellas la producción de esencias naturales. El alto coste y el impacto medioambiental de los métodos tradicionales de extracción hacen necesario el desarrollo de alternativas sostenibles. En este trabajo se presenta el diseño y la construcción de un destilador solar combinado que utiliza energía solar concentrada como fuente primaria y energía fotovoltaica como fuente secundaria para la producción de esencias naturales de cítricos. El destilador incorpora un concentrador de disco parabólico y un sistema de estabilización de temperatura. Las pruebas experimentales demuestran que el destilador solar alcanza las temperaturas requeridas para la destilación en menos tiempo y aumenta la producción de esencias en comparación con los métodos convencionales. Estos resultados ponen de relieve el potencial de este enfoque sostenible para la producción de esencias naturales.

Sustainable fashion is a philosophy centered on the ethical and environmentally responsible production of garments. However, currently prevailing in the market is a model known as fast fashion, which is characterized by mass production of low-quality garments at affordable prices. In this context, our article presents a comparative analysis between sustainable fashion and fast fashion, highlighting how these models represent two divergent approaches in the fashion industry. Overall, this work aims to contribute to the literature by exploring the differences, challenges, and advancements in the development of both trends. The study examines production speed, material usage, working conditions, and environmental awareness, developing a conceptual framework that provides an overview of the complexity of the fashion industry and its potential direction in terms of sustainability and responsible consumption.

In this paper we analyze tourism as complex system susceptible to external perturbations, like COVID-19 public health emergency. The research objective is to confirm pertinence of using transdisciplinary tools such as complexity approach and network analysis to understand and represent tourism occupancy dynamic. We used network science methodology to introduce an analysis that integrates two Mexican tourism industry indicators: Tourist Destinations occupancy rates and Hospitality-Gastronomy jobs; correlated with COVID-19 in Mexico pandemic indicator: Confirmed cases. The analysis results are based on centrality measures used to describe organizational patterns in tourism dynamic, besides we identified some generic properties of tourism occupancy distribution.

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