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1
artículo
Publicado 2023
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Currently due to the pandemic situation that has affected the world community without distinction of languages, customs and creeds, technology was incorporated massively to achieve the continuity of progress in research, and development of culture and academic education, through this progress. As an introduction we can mention that this research is achieved by the need to do physics using other tools easy to manipulate with basic programming knowledge, likewise in the repositories there are many other studies that applied computationally the development of simulations of different physical phenomena. The method to use is the GeoGebra tools applying the basic syntax that is obtained by entering the equations in the input bar of the GeoGebra software already preset, being these equations calculated many times by students using differential equations, which obtains the solution equation dep...
2
artículo
Publicado 2004
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There is no an explicit solution for is proposed problem in 1963 by Lorentz. Generally, this system of differentials equations is solved by the method oftrapezoidal integration with extrapolation of Richardson or by the improved method of Euler. In this work an altemative solution by the method of Runge Kutta Fehlberg ís presented, which requires only six evaluat.ions ofthe function, thus reducing the time ofcalculation.
3
artículo
Publicado 2023
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Currently due to the pandemic situation that has affected the world community without distinction of languages, customs and creeds, technology was incorporated massively to achieve the continuity of progress in research, and development of culture and academic education, through this progress. As an introduction we can mention that this research is achieved by the need to do physics using other tools easy to manipulate with basic programming knowledge, likewise in the repositories there are many other studies that applied computationally the development of simulations of different physical phenomena. The method to use is the GeoGebra tools applying the basic syntax that is obtained by entering the equations in the input bar of the GeoGebra software already preset, being these equations calculated many times by students using differential equations, which obtains the solution equation dep...
4
artículo
Publicado 2019
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Earth's behavior comprehension can be achieved by the analysis of Remote Sensing data, but considering the unprecedented volumes of information currently provided by different satellites sensors, the problem can be regarded as a big data problem. Machine learning techniques have the potential to improve the analysis of this type of data; however, most current machine learning algorithms are unable to properly process such huge volumes of data. In the attempt to overcome the computational limitations related to Remote Sensing Big Data analysis, we implemented the K-Means algorithms, a clustering technique, as distributed solution, exploiting the capabilities of cloud computing infrastructure for processing very large datasets. The solution was developed over the InterCloud Data Mining Package, which is a suite of distributed classification methods, previously employed in hyperspectral ima...
5
artículo
Publicado 2017
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Spermidine is a polyamine compound found in fruits, vegetables, meats and milk products. It is also known for its role as a modulator of functions for DNA, RNA, nucleotide triphosphates and proteins. Some recent experimental studies have shown that it has an inhibitory function on the protein related to the pathogenesis of myotonic dystrophy type 1 (MBNL‐1), providing some hope in relation to this disease presently without cure. However these studies have not provided sufficient information to explain its inhibitory role. In the present work, the existing interaction between spermidine and the MBNL‐1 protein has been confirmed by computational chemistry. The quantum mechanics analysis was carried out with the CAM‐B3LYP density functional, using a TZVP basis set. For the molecular mechanics, the OPLS‐AA force field was used, followed immediately by the solvation of the MBNL‐1 pr...
6
artículo
Publicado 2017
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Spermidine is a polyamine compound found in fruits, vegetables, meats and milk products. It is also known for its role as a modulator of functions for DNA, RNA, nucleotide triphosphates and proteins. Some recent experimental studies have shown that it has an inhibitory function on the protein related to the pathogenesis of myotonic dystrophy type 1 (MBNL‐1), providing some hope in relation to this disease presently without cure. However these studies have not provided sufficient information to explain its inhibitory role. In the present work, the existing interaction between spermidine and the MBNL‐1 protein has been confirmed by computational chemistry. The quantum mechanics analysis was carried out with the CAM‐B3LYP density functional, using a TZVP basis set. For the molecular mechanics, the OPLS‐AA force field was used, followed immediately by the solvation of the MBNL‐1 pr...
7
artículo
The need to develop a BCI brain- computer interface system for the control of a robotic arm in Peru arises from the possibility of interconnecting the human nervous system with a robotic or mechatronic system, and using this concept to recover some motor function. Brain Computer Interface (BCI) is a communication system based on the recording of brain signals (EEG). The electroencephalogram is the basis and support of the BCI technology. It is a novel technology that allows human-machine interaction in a virtual or physical environment, through a communication channel between the central nervous system and a robotic device. In recent years, the aforementioned systems have caused the interest of important research centers worldwide.
8
artículo
Publicado 2022
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Gaussian processes that can be decomposed into a smooth mean function and a stationary autocorrelated noise process are considered and a fully automatic nonparametric method to simultaneous estimation of mean and auto-covariance functions of such processes is developed. The proposed empirical Bayes approach is data-driven, numerically efficient, and allows for the construction of confidence sets for the mean function. Performance is demonstrated in simulations and real data analysis. The method is implemented in the R package eBsc.
9
artículo
Publicado 2023
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Sensing drug substances by nanostructures are very important in accordance with the management of targeted drug delivery processes and drug substances detections. Boron nitride (BN), aluminum nitride (AlN), and gallium nitride (GaN) decorated carbon cage (BN-C, AlN-C, and GaN-C) scaffolds were assessed towards sensing the thiamazole (TMZ) drug through the wB97XD/6–31 + G* level of density functional theory (DFT) computations. The singular models were optimized and their combinations to each other were stabilized to obtain the interacting TMZ@Scaffold bimolecular complexes and their corresponding features. The results indicated the existence of non-covalent physical interactions between the substances and their electronic features indicated possibility of sensing function for the investigated scaffolds. Based on the variations of values of adsorption energy and energy gap, the features ...
10
artículo
In this paper a hybrid scheme given by diffusion equation in conjunction to classical electrodynamics to examine physics-based mechanisms behind the behavior of beta cells, is presented. Particular attention is paid on the scenario by which beta-cell is not able to segregate insulin granules. Thus, a mechanism that would explain anomalies as seen in the lost of functions to segregate granules of insulin, is proposed. In this manner, the main argument of this paper states that the processes previous to the segregation of insulin given by (i) entrance of insulin, (ii) exit of Potassium K+, (iii) entrance of Calcium 2+, and (iv) segregation of insulin belong in only one universal formulation. A pseudo code by which the diabetes disease might be seen as a bug of the biological software of beta cell is proposed. Therefore a scheme capable to fix that bug would constitute a path to alleviate t...
11
artículo
Publicado 2022
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The science courses are and will be the basis of the students' knowledge, in this sense the mathematics course is considered the most important course because in its content it presents topics related to calculus, making their learning of vital importance in the design of educational processes. Finance a review of the state of the art we find a series of works dedicated to being able to enhance the mechanisms used for teaching, from the use of scientific calculators to reaching certain computer programs of common use, in this work a methodology is developed to be able to enhance the programming skills that teachers have in a specific area of programming, where we can consider any programming language but also any computer tool such as Excel spreadsheets. The methodology proposes the organization of topics as specific theories, such as algebra, arithmetic, trigonometry, geometry, where sp...
12
artículo
Publicado 2022
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With the increasing popularity of online social networking platforms, the amount of social data has grown exponentially. Social data analysis is essential as spamming activities and spammers are escalating over online social networking platforms. This paper focuses on spammer detection on the Twitter social networking platform. Although existing researchers have developed numerous machine learning methods to detect spammers, these methods are inefficient for appropriately detecting spammers on Twitter due to the imbalance of spam and nonspam data distribution, the involvement of diverse features and the applicability of data mechanisms by spammers to avoid their detection. This research work proposes a novel hybrid approach of the gravitational search algorithm and the decision tree (HGSDT) for detecting Twitter spammers. The individual decision tree (DT) algorithm is not able to address...
13
tesis de grado
Publicado 2022
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Actuators are devices that provides a controlled change in a physical system. They can operate manually, electrically, or by various fluids. Among them, pneumatics actuators have advantages of working with compressible fluids that provides safety and efficient limitations. These are very critical parameters for soft robotics. Rigid actuators are not suitable to substitute muscle functions, hence flexible actuators are appealing. Yet the process to fabricate soft actuators have long iteration until the final product is manufactured and is difficult to design and control due to their natural flexible behavior. 3D printing could be a possible solution. Researchers are exploring feasible solutions with 3D printing material. However, since it’s a new area of research, there is not a large and deep characterization of these materials. This study will focus on the simulation of a hyperelastic...
14
tesis de grado
Publicado 2025
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Este proyecto se orientó al diseño e implementación de un sistema automatizado destinado a clasificar y recolectar granos de quinua en condiciones de laboratorio. Para ello se tomaron como criterios de diferenciación tanto el color (blanco, rojo y negro) como el tamaño (pequeño, mediano y grande). La propuesta surgió como alternativa al procedimiento manual tradicional, el cual suele generar resultados poco confiables debido a su carácter subjetivo, la lentitud del proceso y las limitaciones en precisión. El sistema estuvo compuesto por un dispensador que liberó los granos de manera individual hacia una zona de trabajo con iluminación controlada, donde una cámara ubicada en la parte superior capturó las imágenes para su análisis. A través de un modelo de visión artificial se determinaron las características físicas de cada grano, y posteriormente un soplador lateral, e...
15
artículo
Publicado 2025
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Purpose: The aim of this article is to establish a theoretical-methodological proposal to study discursive interactivity from a multidisciplinary perspective different from the traditional structural and quantitative media research. The sociological definition of interaction and the basis of discourse analysis –as a theoretical discipline and scientific method– are assumed to propose a concept of interactivity that addresses the double materiality of the term: as a structure and a process. Methodology: Grounded theory becomes a methodological strategy and is complemented by the bibliographic-documentary method and discourse analysis. By means of theoretical sampling, codification, constant comparison and theoretical saturation, a category is determined that emerges as central, for which the following are established: conceptual definition, dimensions, subcategories and indicators. Re...
16
artículo
Publicado 2021
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The influence of family and school on the level of independence of pre-school children is a fundamental aspect of integral development in early ages. This study has a quantitative descriptive approach. The aim of this study was to know the degree of Functional Independence in pre-school children in Cuenca (Ecuador). The participants were 30 children (3-5 years old), 15 from a public institution and 15 from a private one. The Pediatric Evaluation of Disability Inventory Computer Adaptive Test (PEDICAT) was used as an evaluation tool, which measures the level of independence in 4 areas. The results showed that the children from the private institution were more independent in the areas of Daily and Social Cognitive Activities; while in the area of Mobility and Responsibility both groups obtained the same level. These data served as a basis to develop a parent working guide, in which activi...
17
artículo
Publicado 2022
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The objective of this article is to identify the results of the functionality of the learning platform and its effect on the satisfaction of mechanical and electrical engineering students. The results will serve as a basis for the continuous improvement of teaching-learning online from the higher institution. The research findings indicate that the indicators that present a better perception regarding the functionality of the learning platform are related to the design and ease of navigation. However, 21.4% of the students are not entirely satisfied with its functionality due to the technical problems presented when downloading the study material. According to the results, we can point out that the functionality of the learning platform generates an effect of 70.87% on student satisfaction, the relationship was validated through the Chi-square test, in which it is determined that the ind...
18
tesis doctoral
Publicado 2020
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Descargue el texto completo en el repositorio institucional de la Universidade Estadual de Campinas: https://hdl.handle.net/20.500.12733/1641647
19
tesis de grado
Cálculo de la energía total del sistema Fierro - Vanadio en la estructura BCC por método AB - Initio
Publicado 2015
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En el presente trabajo de investigación se han analizado y obtenido la energía total y las propiedades electrónicas (el parámetro de red, el momento magnético, el módulo de compresibilidad, la densidad de estados y las bandas de energía) de las diferentes fases del sistema Fierro-Vanadio (Fe-V), en la estructura cúbica de cuerpo centrado (BCC), obtenidos con el método ab-initio o de primeros principios llamado Full-Potential Linearized Augmented Plane Wave (FP-LAPW) en la versión del código computacional WIEN2k-10; el cual es un método que está basado en la Teoría Funcional de la Densidad y que utiliza como aproximación para la base de los orbitales las ondas planas aumentadas linearizadas. Se obs~rvó qu<; 1¡:¡. presencia del Vanadio (V) disminuye el carácter magnético del Hierro (Fe) en la estructura FeV3 en un 99% comparado con el carácter magnético del Hierro (Fe...
20
artículo
Publicado 2022
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The abundance of dipoles of glucose in the blood stream would give rise to a pushing out of albumin proteins giving origin to the formation of a biolelectric circuit inside renal glomerulus. In the periods of large amounts of glucose and albumin in blood, kidneys might not be able to filter proteins initializing the interaction protein-protein at the renal glomerulus. From this nephrine and albumin interaction can be seen as a capacitor because the anionic and cationic functions of proteins. This paper have paid attention to the physics of renal glomerulus when it is electrically involved due to the presence of albumin that surpasses the different layers of renal glomeulus becoming a strong indicator of the kidney disease.
