Matrix estimation using matrix forgetting factor and instrumental variable for nonstationary sequences with time variant matrix gain

Consider us the problem of time-varying parameter estimation. The most immediate and simple idea is to include a discounting procedure in an estimation algorithm i.e., a procedure for discarding (forgetting) old information. The most common way to do is to introduce an exponential forgetting factor (FF) into the corresponding estimation procedure (to see: Ljung and Gunnarson (1990)). In this paper, the authors going to describe a good enough estimator considering a system with nonstationary time variant properties with respect to input and output qualities. The techniques used are Instrumental Variable (IV) and Matrix Forgetting Factor (MFF). The results previously obtained by (Poznyak and Medel 1999a, 1999b) were the basis of this paper. The theoretical description illustrates the advantages with respect to others filters below cited.Eje: IV - Workshop de procesamiento distribuido y paraleloRed de Universidades con Carreras en Informática (RedUNCI

Matrix estimation using matrix forgetting factor and instrumental variable for nonstationary sequences with time variant matrix gain

Consider us the problem of time-varying parameter estimation. The most immediate and simple idea is to include a discounting procedure in an estimation algorithm i.e., a procedure for discarding (forgetting) old information. The most common way to do is to introduce an exponential forgetting factor (FF) into the corresponding estimation procedure (to see: Ljung and Gunnarson (1990)). In this paper, the authors going to describe a good enough estimator considering a system with nonstationary time variant properties with respect to input and output qualities. The techniques used are Instrumental Variable (IV) and Matrix Forgetting Factor (MFF). The results previously obtained by (Poznyak and Medel 1999a, 1999b) were the basis of this paper. The theoretical description illustrates the advantages with respect to others filters below cited.Eje: IV - Workshop de procesamiento distribuido y paraleloRed de Universidades con Carreras en Informática (RedUNCI

Educación superior disruptiva y su influencia en el aprendizaje de los estudiantes de la facultad de administración de la universidad nacional San Luis Gonzaga

The objective of the study was to determine to what extent disruptive higher education influences the learning of the students of the Faculty of Administration of the Universidad Nacional San Luis Gonzaga in the year 2021. The research is quantitative, basic, explanatory level, non-experimental design. and transactional. The sample consisted of 204 students selected by means of probabilistic sampling, the collection of information was carried out through a personal survey by email. The instrument was a questionnaire of twenty questions with Likert-type response alternatives. The results of the questions referring to the Online academic training indicator, and those referring to the Virtual classroom tools indicator, were submitted to the chi-square test statistic with a significance level of 0.05, obtaining p-value in each minor question. percentage than at the level of significance, so the null hypothesis is rejected and it is concluded that disruptive higher education directly influences student learning, confirming the study hypothesis.El objetivo del estudio fue determinar en qué medida la educación superior disruptiva influye en el aprendizaje de los estudiantes de la Facultad de Administración de la Universidad Nacional San Luís Gonzaga en el año 2021. La investigación es cuantitativa, básica, nivel explicativo, diseño no experimental y transeccional. La muestra fue de 204 estudiantes seleccionados mediante muestreo probabilístico, la recolección de información se realizó mediante encuesta personal por correo electrónico. El instrumento fue un cuestionario de veinte preguntas con alternativas de respuesta tipo Likert. Los resultados de las preguntas referidas al indicador Formación académica on line, y de las referidas al indicador Herramientas del aula virtual, se sometieron al estadístico de prueba de chi cuadrada con un nivel de significancia de 0,05 obteniendo p- valor en cada pregunta menor porcentaje que al nivel de significancia, por lo que se rechaza la hipótesis nula y se concluye que la educación superior disruptiva influye directamente en el aprendizaje de los estudiantes, confirmándose la hipótesis de estudio

Factores de estímulo para propuesta de buenas prácticas de gestión de estudiantes de una Universidad Pública del Perú

The objective of the study was to investigate the stimulus factors for the proposal of good management practices of the students of the Faculty of Administration of the San Luis Gonzaga National University, located in the department of Ica, south of Lima. The research is quantitative, basic, explanatory level, non-experimental and transectional design. The sample consisted of 175 students selected by means of probabilistic sampling, the collection of information was carried out through a personal survey applied in the classroom. The instrument was a self-administered questionnaire with fourteen questions; three of the closed type, three of the open type and the rest with Likert-type response alternatives. The results of the questions referring to the indicators Internal Stimulus Factors and External Stimulus Factors, were submitted to the chi-square test statistic with a significance level of 0.05, obtaining a lower p-value, therefore the null hypothesis is rejected. and it is concluded that internal factors and external factors are a stimulus for the proposal of good management practices of the students of the Faculty of Administration of the San Luis Gonzaga National University, confirming the study hypothesis.El objetivo del estudio fue Investigar cuáles son los factores de estímulo para la propuesta de buenas prácticas de gestión de los estudiantes de la Facultad de Administración de la Universidad Nacional San Luis Gonzaga, ubicada en el departamento de Ica, al sur de Lima. La investigación es cuantitativa, básica, nivel explicativo, diseño no experimental y transeccional. La muestra fue de 175 estudiantes seleccionados mediante muestreo probabilístico, la recolección de información se realizó mediante encuesta personal aplicado en aula. El instrumento fue un cuestionario autoadministrado de catorce preguntas; tres de tipo cerrada, tres de tipo abierta y las restantes con alternativas de respuesta tipo Likert. Los resultados de las preguntas referidas a los indicadores Factores de estímulo interno y Factores de estímulo externo, se sometieron al estadístico de prueba chi cuadrada con un nivel de significancia de 0,05 obteniendo p- valor menor, por lo que se rechaza la hipótesis nula y se concluye que los factores internos y los factores externos son estímulo para la propuesta de buenas prácticas de gestión de los estudiantes de la Facultad de Administración de la Universidad Nacional San Luis Gonzaga, confirmándose la hipótesis de estudio

Mitochondrial Thioredoxin-Glutathione Reductase from Larval Taenia crassiceps (Cysticerci)

Mitochondrial thioredoxin-glutathione reductase was purified from larval Taenia crassiceps (cysticerci). The preparation showed NADPH-dependent reductase activity with either thioredoxin or GSSG, and was able to perform thiol/disulfide exchange reactions. At 25°C specific activities were 437 ± 27 mU mg−1 and 840 ± 49 mU mg−1 with thioredoxin and GSSG, respectively. Apparent Km values were 0.87 ± 0.04 μM, 41 ± 6 μM and 19 ± 10 μM for thioredoxin, GSSG and NADPH, respectively. Thioredoxin from eukaryotic sources was accepted as substrate. The enzyme reduced H2O2 in a NADPH-dependent manner, although with low catalytic efficiency. In the presence of thioredoxin, mitochondrial TGR showed a thioredoxin peroxidase-like activity. All disulfide reductase activities were inhibited by auranofin, suggesting mTGR is dependent on selenocysteine. The reductase activity with GSSG showed a higher dependence on temperature as compared with the DTNB reductase activity. The variation of the GSSG- and DTNB reductase activities on pH was dependent on the disulfide substrate. Like the cytosolic isoform, mTGR showed a hysteretic kinetic behavior at moderate or high GSSG concentrations, but it was less sensitive to calcium. The enzyme was able to protect glutamine synthetase from oxidative inactivation, suggesting that mTGR is competent to contend with oxidative stress

Un modelo dinámico para el arribo de tareas en tiempo real

Para el estudio de Sistemas en Tiempo Real es necesario conocer el comportamiento de las tareas que lo forman; esto es para aprovechar al máximo los recursos mediante planificadores y conocer el comportamiento del sistema ante diversas situaciones (predictibilidad). Diversos autores han desarrollado modelos de Tareas en Tiempo Real (TTR), sin embargo estos modelos son estáticos y no brindan mucha información del arribo de las mismas. En este documento se propone un modelo dinámico general para tiempos de arribo absolutos basado en un Modelo Recursivo con Promedios Móviles (MRPM) que incluye perturbaciones internas y ajenas al procesador; a través de este modelo es posible representar el comportamiento de las tareas periódicas, esporádicas y aperiódicas.Eje: Arquitectura, Redes y Sistemas Operativos (ARSO)Red de Universidades con Carreras en Informática (RedUNCI

Un modelo dinámico para el arribo de tareas en tiempo real

Para el estudio de Sistemas en Tiempo Real es necesario conocer el comportamiento de las tareas que lo forman; esto es para aprovechar al máximo los recursos mediante planificadores y conocer el comportamiento del sistema ante diversas situaciones (predictibilidad). Diversos autores han desarrollado modelos de Tareas en Tiempo Real (TTR), sin embargo estos modelos son estáticos y no brindan mucha información del arribo de las mismas. En este documento se propone un modelo dinámico general para tiempos de arribo absolutos basado en un Modelo Recursivo con Promedios Móviles (MRPM) que incluye perturbaciones internas y ajenas al procesador; a través de este modelo es posible representar el comportamiento de las tareas periódicas, esporádicas y aperiódicas.Eje: Arquitectura, Redes y Sistemas Operativos (ARSO)Red de Universidades con Carreras en Informática (RedUNCI

Matrix estimation using matrix forgetting factor and instrumental variable for nonstationary sequences with time variant matrix gain

Consider us the problem of time-varying parameter estimation. The most immediate and simple idea is to include a discounting procedure in an estimation algorithm i.e., a procedure for discarding (forgetting) old information. The most common way to do is to introduce an exponential forgetting factor (FF) into the corresponding estimation procedure (to see: Ljung and Gunnarson (1990)). In this paper, the authors going to describe a good enough estimator considering a system with nonstationary time variant properties with respect to input and output qualities. The techniques used are Instrumental Variable (IV) and Matrix Forgetting Factor (MFF). The results previously obtained by (Poznyak and Medel 1999a, 1999b) were the basis of this paper. The theoretical description illustrates the advantages with respect to others filters below cited.Eje: IV - Workshop de procesamiento distribuido y paraleloRed de Universidades con Carreras en Informática (RedUNCI

Gamit! Icing on the Cake for Mathematics Gamification

Indexado en ScopusGamification has permeated education as a strategy to improve the teaching-learning process. Research shows that gamified reward systems based on badges, leaderboards, and avatars modifies the learning environment and student attitudes. This research aimed primarily to assess the change in attitude towards mathematics in high school students through a gamified methodology involving a reward system managed through a web platform called Gamit! This platform was developed by professors from two Latin American universities to manage gamification in a way that ensured that the anonymity of the class rankings was maintained. A mixed (QUAN-Qual) and quasi-experimental methodological approach was used for this study; two questionnaires were applied to 454 high school students and a focus group was performed with a group of seven professors. The quantitative analysis was processed with SPSS and consisted of ANOVAS and post hoc tests for more than two samples, while the focus group analysis was performed through inductive analysis. Results show benefits for professors and learners. Students improved their attitudes toward mathematics, reducing anxiety and improving willingness, while professors found a dynamic and optimal way to manage gamification on Gamit!.Revisión por pare