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1
artículo
Publicado 2020
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Many automotive systems such as engines have manufacturing tolerances or change over time. This limits the performance of controllers tuned for the nominal case. A robust controller can not always overcome this performance gap. Against this background, in this work, we propose a self-tuning control strategy for an engine air path model obtained from data of a real engine and show its benefits setting. The self-tuning control consists of an online parameter estimation algorithm for polynomial non-linear autoregressive with exogenous input (PNARX) models and a nonlinear model predictive controller (NMPC) implemented by the continuation/generalized minimum residual (C/GMRES) algorithm. In a first step design of experiments (DOE) is utilized to identify a PNARX model offline from measurements performed on an engine test bed. A tracking NMPC is designed for this model and applied in simulatio...
2
artículo
Publicado 2019
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Purpose. This paper aims to provide an overall review and assessment of the virtues and flaws of decentralized self-regulated markets, discussing in particular the extent to which deceiving attitudes by some market participants might be potentially diluted and contradicted. Design/methodology/approach. To approach deception and morality in markets, the paper follows two paths. First, the relevant recent literature on the theme is reviewed, examined and debated, and second, one constructs a simulation model equipped with the required elements to discuss the immediate and longterm impacts of deceiving behaviour over market outcomes. Findings. The discussion and the model allow for highlighting the main drivers of the purchasing decisions of consumers and for evaluating how they react to manipulating behaviour by firms in the market. Agents pursuing short-run gains through unfair market pra...
3
artículo
Publicado 2019
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Purpose - This paper aims to provide an overall review and assessment of the virtues and flaws of decentralized self-regulated markets, discussing in particular the extent to which deceiving attitudes by some market participants might be potentially diluted and contradicted. Design/methodology/approach - To approach deception and morality in markets, the paper follows two paths. First, the relevant recent literature on the theme is reviewed, examined and debated, and second, one constructs a simulation model equipped with the required elements to discuss the immediate and longterm impacts of deceiving behaviour over market outcomes. Findings - The discussion and the model allow for highlighting the main drivers of the purchasing decisions of consumers and for evaluating how they react to manipulating behaviour by firms in the market. Agents pursuing short-run gains through unfair market ...
4
tesis de maestría
Publicado 2015
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Radioteleskope sind verschiedenartigen Umwelteinflüssen ausgesetzt. Dadurch hervorgerufene Verformungen der Reflektoroberfläche verändern deren geometrischen Eigenschaften und können die ursprüngliche Position und Form des Brennpunkts verändern. Eine Abweichung dieses Brennpunkt von der Lage der Primärantenne beeinflusst die Leistungsfähigkeit des Teleskops. Die vorliegende Arbeit zeigt eine Methode zur theoretischen Abschätzung der Verformung durch das Eigengewicht des Reflektors des INRAS RT–20. Jene nach der Idee des homologen Designs von Hoerners konstruierten Teleskopen weisen eine Stützstruktur auf, die die Reflektorfläche unabhängig vom Elevationswinkel in einer der ursprünglichen Form ähnlichen Gestalt halten. Somit kann die Verformung durch das Nachführen der Primärantenne ausgeglichen werden. Grundlage der Untersuchung ist ein vorhandenes Strukturmodell des RT...
5
tesis de maestría
Publicado 2015
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Radioteleskope sind verschiedenartigen Umwelteinflüssen ausgesetzt. Dadurch hervorgerufene Verformungen der Reflektoroberfläche verändern deren geometrischen Eigenschaften und können die ursprüngliche Position und Form des Brennpunkts verändern. Eine Abweichung dieses Brennpunkt von der Lage der Primärantenne beeinflusst die Leistungsfähigkeit des Teleskops. Die vorliegende Arbeit zeigt eine Methode zur theoretischen Abschätzung der Verformung durch das Eigengewicht des Reflektors des INRAS RT–20. Jene nach der Idee des homologen Designs von Hoerners konstruierten Teleskopen weisen eine Stützstruktur auf, die die Reflektorfläche unabhängig vom Elevationswinkel in einer der ursprünglichen Form ähnlichen Gestalt halten. Somit kann die Verformung durch das Nachführen der Primärantenne ausgeglichen werden. Grundlage der Untersuchung ist ein vorhandenes Strukturmodell des RT...
6
tesis doctoral
Publicado 2025
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Maintaining the stability of bipedal walking remains a major challenge in humanoid robotics, primarily due to the large number of hyperparameters involved and the need to adapt to dynamic environments and external disturbances. Traditional methods for determining these hyperparameters, such as heuristic approaches, are often time- consuming and potentially suboptimal. In this thesis, we present an integrated approach combining advanced control and reinforcement learning techniques to improve the stability of bipedal walking, particularly in the face of ground disturbances and speed variations. Our main contribution lies in the integration of two complementary approaches: (1) an intrinsically stable model predictive control (IS-MPC) combined with whole-body admittance control, and (2) a reinforcement learning module implemented in the mc_rtc framework. This system allows for continuous mo...
7
artículo
Publicado 2022
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An experimental model of a wind solar chimney for electrical supply was developed, firstly, the most suitable geographic space was selected for the implementation of the model. Next, we carried out a study in order to determine the environmental, wind and solar parameters using the viewers of the Ministry of Energy and Mines; Taking renewable energy resources as a starting point, a pre-dimensioning was established in order to guarantee economic and technical viability to be able to build the model.The theory of similarity was applied to define the preliminary geometry of the chimney considering built plants as referents, marking the difference of adding two additional subsystems, one wind and the other photovoltaic in order to give it greater autonomy; the wind subsystem located in the upper part of the chimney and the photovoltaic subsystem along the outer surface of the chimney collect...
8
artículo
Publicado 2023
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Research on the bibliographic review studies on collaborative learning at the university level published in the last five years, allows to verify an absence of systematic comparative analysis of explicit and exhaustive analytical criteria that enables ordering of the different contributions. Precisely, the objective of this work was to establish a referential analytical model that allows a clear systematization of the corpus of articles recovered in the period 2018-2022. To meet this objective, a bibliographic search was carried out in the databases: SciELO, RedALyC, Eric and Dialnet. 71 studies were recovered. In the first part of the manuscript, this corpus of research was analyzed based on the constructed analytical criteria or variables. In the second part, the variables of the proposed model were analyzed inclusively. Based on this systematization, 12 studies were selected that can ...
9
artículo
Publicado 2020
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In the ecological literature, the interference (self-interference) or competition among predators to effect the harvesting of their prey has been modeled by different mathematical formulations.In this work, we will establish the dynamical properties of the Leslie-Gower type predation model, in which is incorporated one of these form, described by the function b (y) = yalfa , with 0 < alfa < 1.The main difficulty of the analysis is due to this function is not differentiable for y = 0, and the Jacobian matrix is not defined in the equilibrium points over the horizontal axis (x-axis).Previously, we showed a summary with the fundamental properties of the Leslie-Gower type model, in order to carry out an adequate comparative analysis with models where self-interference between predators is incorporated.To reinforce our results, some numerical simulations are shown.
10
artículo
Publicado 2020
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In the ecological literature, the interference (self-interference) or competition among predators to effect the harvesting of their prey has been modeled by different mathematical formulations.In this work, we will establish the dynamical properties of the Leslie-Gower type predation model, in which is incorporated one of these form, described by the function b (y) = yalfa , with 0 < alfa < 1.The main difficulty of the analysis is due to this function is not differentiable for y = 0, and the Jacobian matrix is not defined in the equilibrium points over the horizontal axis (x-axis).Previously, we showed a summary with the fundamental properties of the Leslie-Gower type model, in order to carry out an adequate comparative analysis with models where self-interference between predators is incorporated.To reinforce our results, some numerical simulations are shown.
11
tesis de grado
Publicado 2023
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The aviation sector has suffered the effects of the pandemic as the industry’s problems have become more evident due to operational constraints. The challenging and uncertain scenario has made the airline industry adapt its business to innovative alternatives based on efficient and digital strategies associated with the sector’s low productivity and the efficiency of each process. According to the reports, a series of failures were observed in the Maintenance Ad- ministrative Area, which is in charge of managing the work shifts of each technician in charge of aircraft maintenance, identifying that the most significant productivity problem in the area is based on the inefficient attention of requests to technical personnel. There- fore, a new model based on digital transformation was established by applying Business Process Management and Lean Manufactur- ing, in which the implementat...
12
artículo
The purpose of this research was to explore educational mobile applications of electronics in Spanish to identify those that favor the learning of university students, specifically from the Computer Engineering degree program at the UAEM Texcoco University Center. An evaluation instrument was developed based on technical and didactic criteria based on the constructivist model, prioritizing interactivity, usability, educational content and feedback. The methodology included a literature review on evaluation instruments and the use of mobile applications as self-directed learning tools. The applications were selected through an analysis of their performance. Data were obtained from university students who applied the instrument. It was identified that the application “Electrician’s Manual” was the best rated in its didactic properties with 9.33 points, “Electrodoc” was placed wit...
13
artículo
The purpose of this research was to explore educational mobile applications of electronics in Spanish to identify those that favor the learning of university students, specifically from the Computer Engineering degree program at the UAEM Texcoco University Center. An evaluation instrument was developed based on technical and didactic criteria based on the constructivist model, prioritizing interactivity, usability, educational content and feedback. The methodology included a literature review on evaluation instruments and the use of mobile applications as self-directed learning tools. The applications were selected through an analysis of their performance. Data were obtained from university students who applied the instrument. It was identified that the application “Electrician’s Manual” was the best rated in its didactic properties with 9.33 points, “Electrodoc” was placed wit...
14
tesis de grado
Publicado 2024
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Actualmente las empresas de servicio de imprenta presentan un nivel de servicio de 95%. Sin embargo, en el caso de estudio dicho indicador señala a un nivel 71.75%; es decir, se encuentra por debajo del promedio del sector. Para ello, se ha realizado el análisis de los procesos y se ha identificado los siguientes motivos del bajo nivel de servicio, entre las cuales se encuentran, paradas de maquinarias, reprocesos y paradas por ausencia de materia prima. El estudio tiene como objetivo examinar cómo la implementación de una metodología de producción eficiente en EADEC PERÚ SAC ha llevado a un aumento en los indicadores de nivel de servicio. La investigación consta de cuatro capítulos. El primer capítulo examina la historia nacional e internacional del sector, define conceptos y herramientas metodológicas y presenta casos de éxito de varios autores. En el Capítulo 2, explicamo...
15
informe técnico
Publicado 2021
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The assembly of permanently magnetized particles has recently gained attention for applications such as drug delivery, cancer treatment, fabrication of materials with tunable properties, nanorobots, etc. The point dipole model has been used to quantify the interactions between magnetized particles, but different studies suggest that this model is not valid for anisotropic shapes. Our approach implements the dipolar interaction between ellipsoids on Monte Carlo simulations to analyze the behavior of a dilute system of monodisperse and binary systems composed of spheres and ellipsoids, varying the field strengths and dipolar interaction strengths, under equilibrium conditions. We validated the simulation results of a dilute suspension without dipolar interactions with the Langevin model. We quantified the effect of the dipolar interactions on the monodisperse and binary suspension magnetiz...
16
informe técnico
Publicado 2021
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The assembly of permanently magnetized particles has recently gained attention for applications such as drug delivery, cancer treatment, fabrication of materials with tunable properties, nanorobots, etc. The point dipole model has been used to quantify the interactions between magnetized particles, but different studies suggest that this model is not valid for anisotropic shapes. Our approach implements the dipolar interaction between ellipsoids on Monte Carlo simulations to analyze the behavior of a dilute system of monodisperse and binary systems composed of spheres and ellipsoids, varying the field strengths and dipolar interaction strengths, under equilibrium conditions. We validated the simulation results of a dilute suspension without dipolar interactions with the Langevin model. We quantified the effect of the dipolar interactions on the monodisperse and binary suspension magnetiz...
17
tesis de maestría
Publicado 2023
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En el Perú existe una discordancia entre lo que significa la representación social de calidad de vida, tanto para los adultos mayores como para sus familias, para los primeros significa tener paz, recibir ayuda para lograr sus metas y tener derecho de libre expresión; en contraste con el significado familiar que se enfoca en cubrir sus necesidades básicas. Por ello, la autorrealización no es sólo un derecho del joven; el adulto mayor debe sentirse autorrealizado con el apoyo de la familia, Estado y sector privado. Como parte de este contexto existe una falta de acceso a oportunidades laborales para adultos mayores que se encuentran buscando activamente un trabajo; ante este problema y mediante la metodología ágil de Design Thinking se creó la alternativa llamada Awki, que es un modelo de negocio de servicios domésticos y mantenimiento del hogar brindados por adultos mayores med...
18
tesis de grado
Publicado 2018
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The microstructures formed by magnetic colloids in the absence or presence of external magnetic fields plays a key role in the design of multifunctional nanomaterials. In this work we have carried out Brownian dynamics simulations of a dilute suspension composed by self-propelled superparamagnetic colloids, in order to study the interplay between the self-propulsion and the magnetic interaction forces in their aggregation process, when the suspension is subjected to a strong external magnetic field. This simulation method solves, numerically, the force and torque balance equations which arise after applying the Newton’s second law to the translational and rotational motion of spherical magnetic particles immersed in a Newtonian fluid. The model neglects the particle inertia, the gravity effects and the hydrodynamic interparticle interactions, which is a common practice when the system ...
19
tesis de maestría
Publicado 2024
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Debido al avance tecnológico y los cambios causados por la pandemia de COVID- 19, algunas organizaciones han realizado investigaciones y recomendaciones para mejorar las habilidades y competencias de los estudiantes, con el fin de incluirlos en los planes de estudios y ayudarlos a desarrollar un perfil profesional que les permita adaptarse al mercado laboral (UNESCO-IESALC, 2020). En el área de ingeniería, esos planes se dividen en dos secciones: la parte tecnológica y la práctica de laboratorio. Esta última se ha vuelto más relevante en modelos educativos duales, debido al rápido crecimiento de la industria 4.0 y de la inteligencia artificial. Por eso, es importante prestar atención a los materiales educativos que permitan realizar y evaluar los avances en el aprendizaje de los estudiantes. En una Institución Superior Tecnológica de Lima, en la carrera de técnicas de Ingenie...
20
tesis de maestría
A tool to support sustainable neighbourhood design in contexts of uncertainty of building's geometry
Publicado 2019
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La presente propuesta de investigación tiene como objetivo desarrollar una herramienta capaz de respaldar el diseño de vecindarios sostenibles en contextos donde existe una alta incertidumbre con respecto a la geometría “final“ de los edificios. Esta incertidumbre es propia de contextos en los que el desarrollo de viviendas progresivas es común y la aplicación de la ley es débil. El objetivo se justifica en la revisión de la literatura, que muestra que hasta ahora se han desarrollado dos líneas de investigación independientes, la dinámica de la construcción por un lado y la simulación-optimización de los flujos de recursos para el diseño urbano sostenible por el otro. La revisión de la literatura también muestra que ambas líneas de investigación están convergiendo de tal manera que actualmente es posible proponer una integración. Se planteó una hipótesis para pe...
