DYNA NEW TECHNOLOGIES

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EISSN : 2386-8406
Published by: Publicaciones DYNA (10.6036)
Total articles ≅ 98
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Miguel Alberto Domínguez Gurría, Dariusz Szwedowicz Wasik, Eladio Martinez Rayon,
Published: 18 January 2022
DYNA NEW TECHNOLOGIES, Volume 9; https://doi.org/10.6036/nt10359

Abstract:
This paper presents an experimental and numerical study that allows to evaluate the dissipation of impact energy, proposing a friction damper with the use of layers (LFD) for impact energy dissipation. The study is carried out on a macro scale of contact between the layers and friction elements. The effects of displacement and applied speed are experimentally analyzed. Numerically, the FEM analyses the effects of the preload and the material of the friction layers on the hysteretic behavior of the LFD. The energy dissipation in a cycle increases with respect to the applied displacement. The operating range of the LFD is variable, because the stiffness of the system increases with respect to the applied displacement. The preload applied to the damper varies with respect to the displacement applied. A theoretical approach is established to estimate the energy dissipation of the system with previously defined parameters or, to define the geometry and material of the damper elements for an estimated energy range. Key Words: dry friction, variable stiffness, damper energy, layers, FEM,
María Teresa Cepero García, Luis Gerardo Montane Jimenez, Guadalupe Toledo Toledo, , Carmen Mezura Godoy
Published: 1 March 2021
DYNA NEW TECHNOLOGIES, Volume 8; https://doi.org/10.6036/nt9980

Abstract:
Groupware Systems (GS) or collaborative systems are software systems that support the development of activities in which a group of users interacts to combine their skills, abilities, and work to achieve a common goal. In this area, an important concept is awareness, which is the information that helps people be aware of events beyond their current tasks. This information makes smoother the use of a collaborative system, so it is a fundamental element in this kind of software. In the design and construction of these types of systems, heuristics are used as design guidelines that serve as a useful evaluation tool for product designers and usability professionals. The current heuristics and guidelines for the design of awareness support focus on supporting the awareness of the team in the shared workspace, without considering elements to support the information needs of the user's own and individual interaction within the workspace. To address this problem and to facilitate the design and integration of awareness support, we developed 13 heuristics that integrate principles of Human-Computer Interaction and Computer Supported Cooperative Work to help groupware designers meet individual and team awareness needs. For evaluating the validity of the proposed heuristics, a structured and iterative consultation process was carried out with experts in Human-Computer Interaction and Computer-Supported Cooperative Work. The proposed heuristics can help software engineers develop collaborative systems that integrate awareness information and satisfy users' contextual information needs. Keywords: Awareness, virtual groups, collaborative work, heuristics.
Ainhoa Apraiz Iriarte, , Maitane Mazmela Etxabe
Published: 1 January 2021
DYNA NEW TECHNOLOGIES, Volume 8; https://doi.org/10.6036/nt10072

Abstract:
User Experience (UX) is a key factor and an opportunity for improvement in digital interfaces. Traditionally, it has been evaluated retrospectively through surveys and interviews. However, this is not always the optimal approach, as it does not measure UX at the moment of human-machine interaction and is therefore prone to human error due to inaccurate recall. Thus, physiological monitoring is emerging as a promising technique to assess UX during interactions. This paper aims to identify UX case studies carried out with physiological monitoring by means of a Systematic Literature Review (SLR). The results of the 33 UX case studies reviewed show that interest in incorporating physiological technologies in UX studies is growing and expanding into different fields. The electroencephalogram (EEG) was found to be the most used physiological tool, and the most used set of tools was the Galvanic Skin Response (GSR) with the electrocardiogram (ECG). In addition, the average number of participants was obtained depending on the physiological tool used. The research opportunities identified are: 1) the combination of different methods and tools in the assessment of UX, and 2), the validation of a sample size for UX tests performed with physiological monitoring Keywords: User Experience (UX), evaluation, Systematic Literature Review (SLR), physiological monitorization
Mauricio Pérez Arcila, Martin Alonso Tamayo Velez
Published: 1 January 2021
DYNA NEW TECHNOLOGIES, Volume 8; https://doi.org/10.6036/nt10248

Abstract:
This study aims to show that the continuous control from a level system can be efficiently measured and controlled using capacitive digital binary sensors, which in this case, replace the measurement signal from an analog differential pressure transmitter in a level control system. The binary sensors low cost and the digital output they process allow the reproduction of a correct signal and the estimation of a variable for controlling the water level inside the process tank through a proportional pneumatic level control valve, which receives the control signal from the Lebesgue sampling estimation algorithm applied herein for processing digital measurements. In this particular case, the Lebesgue algorithm is applied to reproduce the estimation of values obtained from the continuous signal in the real level process for the measurement and control. Also, are compared both, simulated and real outputs obtained using the Lebesgue algorithm and digital sensors, which were applied to a state observer controller that relates digital signals for controlling the real level system output. The application of the Lebesgue algorithm in the real level process concludes that the analog level signal can be efficiently reproduced using this method. In addition, the controller enables the system to smoothly conduct digital output processing using digital sensors to control the system output correctly, validating that not only analog sensors should be applied for controlling the output of proportional actuators, because it is shown that digital binary signals can be used for controlling and emulating continuous signals, which were processed and applied to the pneumatic valve. Keywords: Lebesgue sampling, estimation, binary sensor, observer controller, finite state machine, continuous system, control, LTI systems, identification, state variable, estimated output, proportional actuator
María Angélica Torres, Luis Gerardo Montane Jimenez, María Teresa Cepero García
Published: 1 January 2021
DYNA NEW TECHNOLOGIES, Volume 8; https://doi.org/10.6036/nt10069

Abstract:
In the area of computing, we can find studies on collaborative systems, these are defined as computer applications that support teamwork. Among the various models of collaborative systems that have been raised over time, we find elements such as activities and the characterization of the user individually and in teams. These elements share characteristics of multi-agent systems used in artificial intelligence to, among other things, perform simulations. Based on the elements collaborative systems, we proposed a multi-agent implementation to simulate the collaborative activity in a hospital and to analyze the interactions of the members of a team through the tasks they carry out to fulfill objectives and goals. The results of the simulation model implemented in the Anylogic software provided information that could give greater value to the doctor’s role over the nurse’s role due to the tasks they perform in patient care. Keywords: collaborative systems; multiagent systems; simulation
Maitane Mazmela Etxabe, Ganix Lasa Erle, Ainhoa Apraiz Iriarte
Published: 1 January 2020
DYNA NEW TECHNOLOGIES, Volume 7; https://doi.org/10.6036/nt9805

Abstract:
RESUMEN: La industria 4.0 y una vida laboral en continua transmutación, plantean preguntas acerca de cuáles serán las competencias que requerirán las personas para la correcta apropiación tecnológica y la mejora del desempeño. Este trabajo de investigación analiza la implicación de diversas características de diseño de una interfaz de Inteligencia Competitiva en la consecución de tareas, la Experiencia de Usuario y la adopción tecnológica mediante una aproximación multimétodo. A su vez, se analiza el impacto de la familiarización por el orden de uso en la apropiación del software analizado. Los resultados recogidos indican que las interfaces diseñadas teniendo en cuenta la consecución de objetivos, orientadas a cubrir las necesidades de los usuarios y que siguen unos patrones establecidos de diseño ofreciendo una solución precisa y consistente, consiguen mejores resultados durante la ejecución de tareas. En esta línea, en términos de aceptación tecnológica, se ha observado que un diseño que transmite confianza, facilita la navegación, ofrece control y feedback sobre las acciones, provee de una estética clara, precisa y coherente, y que además es tolerante a errores, ayuda a que la tecnología sea apropiada de forma más rápida. Por otro lado, se ha observado que el factor de orden tiene consecuencias significativas durante la ejecución de las tareas y la valoración de los usuarios, por lo que se considera un factor clave en el campo de conocimiento de la UX en relación al análisis del proceso de aprendizaje y apropiación de soluciones digitales. Palabras Clave: Adopción tecnológica, interfaz digital, Industria 4.0, desempeño individual, Inteligencia competitiva
Ivan Castillo Zuñiga, Jaime Ivan Lopez Veyna, Francisco Luna Rosas, Gustavo Tirado Estrada
Published: 1 January 2020
DYNA NEW TECHNOLOGIES, Volume 7; https://doi.org/10.6036/nt9589

Piero Espino Román, Eugenia Olaguez Torres, Jesus Armando Gamez Wilson, Yasser Davizon Castillo, Alejandro Said, Carlos Hernandez Santos
Published: 1 January 2020
DYNA NEW TECHNOLOGIES, Volume 7; https://doi.org/10.6036/nt9673

Abstract:
Este estudio tiene como objetivo integrar una propuesta experimental basada en el uso de simuladores computacionales y la construcción de prototipos experimentales como estrategia para la enseñanza de fenómenos físicos en alumnos de educación básica. Se describe el desarrollo, implementación y uso de simuladores computacionales de libre acceso para el diseño de piezas mecánicas, circuitos eléctricos y electrónicos, mediante la realización de la práctica de laboratorio denominada, “Los robots requieren de circuitos eléctricos”. Para este estudio, se consideró tomar una muestra aleatoria de alumnos que será nuestro grupo activo, el cual realizará la simulación computacional antes de realizar el prototipo experimental, y otro grupo de control de alumnos, este último grupo no realizó la simulación computacional, obteniendo los siguientes resultados: el promedio de calificación fue del 86% en los estudiantes que realizaron simulaciones computacionales contra el 39% del promedio de calificación de los estudiantes que no realizaron dicha simulación computacional. Se concluye que el uso de simuladores computacionales de acceso libre y la construcción de prototipos experimentales mejora el desarrollo del proceso de enseñanza-aprendizaje en el aula, los alumnos lograron demostrar la relación entre las variables de corriente, voltaje y resistencia, mediante la Ley de Ohm. Así mismo lograron identificar la electricidad como fuente de energía, donde se reconoce y valora sus usos cotidianos.
Jorge Calzada Gomez, Luciano Vela Martinez, Laura Islas Ortega, Eusebio Jimenez Lopez
Published: 1 January 2020
DYNA NEW TECHNOLOGIES, Volume 7; https://doi.org/10.6036/nt9776

Abstract:
In this paper, a method of fault detection in a vane pump is presented by estimating the Hurst exponent, from the measurement of the vibrations of the system in operation. This analysis seeks to detect whether the behavior of the data is random or has underlying long memory trends that may indicate a correlation between the data and the dynamic nature of the system, whether stable or unstable. The results obtained showed that there is a clear correlation between the Hurst exponent and the dynamic response of the pump in stable and unstable conditions, so it is considered that the Hurst coefficient estimate allows to detect the failure in a hydraulic system in a timely manner. Keywords: vane pump, Hurst, fractal dimension. RESUMEN En este artículo se presenta un método de detección de fallos en una bomba de paletas mediante la estimación del exponente de Hurst, a partir de la medición de las vibraciones del sistema en operación. Con este análisis se busca detectar si el comportamiento de los datos es aleatorio o presenta tendencias subyacentes de memoria larga que puedan indicar una correlación entre los datos y la naturaleza dinámica del sistema, ya sea estable o inestable. Los resultados obtenidos mostraron que existe una correlación clara entre el exponente de Hurst y la respuesta dinámica de la bomba en condiciones estables e inestables, por lo que se considera que la estimación del coeficiente de Hurst permite detectar oportunamente el fallo en un sistema hidráulico. Palabras clave: Bomba de paletas, Hurst, Dimensión Fractal
Jesus Antonio Alvarez Cedillo, Fernando Martinez Piñon, Teodoro Alvarez Sanchez, Jacobo Sandoval Gutierrez, Mario Aguilar Fernandez
Published: 1 January 2020
DYNA NEW TECHNOLOGIES, Volume 7; https://doi.org/10.6036/nt9789

Abstract:
It shows a new three-dimensional reconstruction technique is presented, for the creation of surfaces from two overlapping polygons with different depths, based on the problem addressed by Gill Barequet and Amir Waxman. The presented reconstruction takes two polygons with three-dimensional spatial positions, superimposes on the two-dimensional plane, performs an arbitrary local triangulation, generates each vertex and faces, and returns the triangulation to the three-dimensional plane. This technique assumes high speed by avoiding interpolation processes and assumes an O (n) complexity. All the algorithms made use the same data structures, the same coding and all the programs were coded in the ANSI C language. For their correct implementation the following hardware configurations were used; Computer CPU using 5th generation Intel Core i7 processor Core i7-5775C 4-Core 3.3GHz; Core i7-5775C 4-Core 3.3GHz with three NVIDIA 9800 GTS cards interconnected with an SLI bus and an Adapteva Epiphany-V64 embedded system. The range of applications where this algorithm can be used is very diverse, including areas such as visual computing, video games, generation of geographic surfaces, geosciences and spatial processes. Keywords: Graphic computation, fast triangulation, 3D reconstruction, triangulation by interpolation
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