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1
tesis de maestría
Publicado 2022
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El plan de negocios propuesto se desarrolla sobre la base de la necesidad identificada de la falta de información relevante en los jóvenes y adultos peruanos para elegir una carrera, programa de especialización y universidad adecuada a su perfil, tanto en competencias como en recursos disponibles, ya que existe una alta tasa de deserción de estudios y/o cambio de carrera. De acuerdo con el desarrollo de la presente investigación se puede observar que los jóvenes toman la decisión de su futuro profesional con la influencia de las recomendaciones de familiares y amigos, así como también de la información que obtienen en las ferias estudiantiles, sin tener sólidos fundamentos e información comparable que puedan analizar objetivamente para una correcta toma de decisiones. En adición, un gran porcentaje de jóvenes peruanos no sigue estudios superiores por falta de recursos y fal...
2
tesis de maestría
Publicado 2022
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El plan de negocios propuesto se desarrolla sobre la base de la necesidad identificada de la falta de información relevante en los jóvenes y adultos peruanos para elegir una carrera, programa de especialización y universidad adecuada a su perfil, tanto en competencias como en recursos disponibles, ya que existe una alta tasa de deserción de estudios y/o cambio de carrera. De acuerdo con el desarrollo de la presente investigación se puede observar que los jóvenes toman la decisión de su futuro profesional con la influencia de las recomendaciones de familiares y amigos, así como también de la información que obtienen en las ferias estudiantiles, sin tener sólidos fundamentos e información comparable que puedan analizar objetivamente para una correcta toma de decisiones. En adición, un gran porcentaje de jóvenes peruanos no sigue estudios superiores por falta de recursos y fal...
3
artículo
Publicado 2020
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The dynamics of the unemployment rate over time reflects the performance of the labor market, one of the most important determinants of well-being in any economy. The unemployment rate is one of the main indicators used to analyze the prosperity and economic situation of a country, and also allows analyzing the economy from two perspectives: the first from the supply side and from the demand side. In this research we are going to analyze the dynamics of unemployment in Metropolitan Lima.For this purpose, we will use the data from the Permanent Employment Survey - EPE from 2002 to 2018 to calculate the monthly unemployment rates. We are interested in studying the development dynamics of the unemployment rate in Metropolitan Lima, and also in comparing the development dynamics ofthe said rate in different cones, men and women, and also the dynamics in different age groups. The main objecti...
4
artículo
Publicado 2020
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The objective of the study is to compare long memory models to model exchange rate volatility. For this objective, the nominal sol / dollar exchange rate is used, covering the periods from July 19, 1999 to November 19, 2013. Essentially, it seeks to examine the prediction capacity between long memory models and hyperbolic behavior of the autocorrelations given by FIGARCH, HYGARCH and IGARCH and concluding that the FIGARCH model (1,0,637,1) using a t-student distribution has a better predictive capacity. The prediction of exchange rate volatility in the case of Peru is structurally important in the calculation of Value at Risk (VaR) and in risk management.
5
artículo
Publicado 2022
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This article presents an overview of the problem of identifying linear and nonlinear systems (Wiener type) operating in open loop. There are several algorithms that solve this problem, among them are the subspace methods (MOESP and N4SID). In order to evaluate the performance of the MOESP and N4SID methods, a simulated example is presented to compare the performance of these algorithms.
6
artículo
Introduction: Having mental health is necessary for the growth and prosperity of humans and as a result of the growth of societies.Objectives: The purpose of this study was to design a mental health management model in Iran.Methods: In this exploratory study, a review study was first performed to analyze the current state of mental health services in Iran and the world. Countries were selected to compare mental health management with Iran in 6 domains. 311 faculty members with mental health were completed by completing a questionnaire with 50 items in the study. Using the factor analysis, the final model was explained. Results: The effective domains in Iranian mental health services management were named in 8 areas: Mental Health in Particular, Key Centers and Task-Shifting, Human Resources and Specialists Training, Psychological Services for Children and Adolescents, Financial Resources...
7
artículo
Publicado 2023
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Describe the COVID-19 pandemic in Peru, carry out mathematical statistical modeling, determine the critical time, the speed with which the pandemic developed and validate the estimated data; have characterized this research; whose objective has been to model and analyze COVID-19 infections in Peru, and compare infected people and estimated infected people; assess the critical time in which the maximum speed of estimated infected people occurs and statistically validate the model. The data on COVID-19 infections until February 24, 2023 has been taken into account; determining that they describe a sigmoidal logistic dispersion; event that was mathematically modeled using the expression , which is a predictive logistic equation. With the predictive mathematical model, the number of people infected and their behavior of COVID-19 in Peru was estimated. Likewise, the speed of people infected w...
8
artículo
Publicado 2018
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Para el establecimiento del área corporal (Body Surface Area, BSA) se han establecido fórmulas de estimación que parten de peso vivo (PV) y longitud corporal para su cálculo. El objetivo de este trabajo fue comparar cuatro fórmulas de estimación de la BSA – Mitchell [0.09 × PV0.69], Brody [0.14 × PV0.57], Johnson et al. [0.235 × PV0.49], Moulton [0.158 × PV5/8] y Hogan y Skouby [PV0.4 × (longitud corporal)0.6 × 217] – y tres modelos no lineales – logístico [y=a/(1+be-cx)], Gompertz [y=a*exp(b*exp(cx))] y von Bertalanffy [y=a(1-be-cx)] – en cuanto a su capacidad para describir el crecimiento de la BSA en bovinos de carne y detectar la mejor estimación. Se trabajó con una muestra de 53 bovinos de aptitud cárnica (20 machos y 33 hembras), mayormente Bruna de los Pirineos y sus cruces, con edades entre 205 y 407 días, peso vivo estimado de 543±74 kg, sacrificados en...
9
tesis de maestría
Publicado 2007
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Las señales espectralmente puras son un requisito indispensable cuando el generador de señales (SG) se va a utilizar como parte de un banco de pruebas. Sin embargo, incluso los equipos sofisticados pueden no cumplir con las necesidades impuestas por ciertas aplicaciones. Este trabajo aborda el problema mediante el uso de la distorsión digital previa (DPD) basada en un modelo polinómico sin memoria obtenido para la SG. Usando la SG en modo arbitrario (ARB), una señal de entrada es generada por computadora y reproducida por la SG. La precisión de la medición se garantiza mediante el muestreo de coherencia y la coincidencia de cuadrícula con el analizador de señal (SA). Finalmente, se utiliza una cuidadosa alineación temporal para comparar las señales de tres tonos transmitidas y recibidas para obtener los coeficientes de los polinomios. Los resultados muestran que la precisión ...
10
artículo
Publicado 2019
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Existing the need to obtain fresh water for human consumption for the benefit oflivestock associations located within the boundaries of the Sechura desert and the SanJuan Bautista de Catacaos Peasant Community, in Piura, an experimental scientific studywas carried out with the main objective compare different models of solar distillers,for at least 3 months, using brackish water from the artisanal well of farmers in theTabanco sector. (with a 95% confidence interval) In order to determine the design ofthe best suitable freshwater solar distiller, from the point of view, environmental andeconomic, the research applied the Bifactorial statistical model of Random Blocks anddid the analysis of variance that was complemented with the Tukey test; obtainingas a result that the solar distiller of two slopes is the most suitable design for theenvironmental conditions of the northern desert allowi...
11
artículo
The objective of the study is to compare long memory models to model exchange rate volatility. For this objective, the nominal sol / dollar exchange rate is used, covering the periods from July 19, 1999 to November 19, 2013. Essentially, it seeks to examine the prediction capacity between long memory models and hyperbolic behavior of the autocorrelations given by FIGARCH, HYGARCH and IGARCH and concluding that the FIGARCH model (1,0,637,1) using a t-student distribution has a better predictive capacity. The prediction of exchange rate volatility in the case of Peru is structurally important in the calculation of Value at Risk (VaR) and in risk management.
12
artículo
Publicado 2013
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The aim of the study is to find the shape of arch anteroinferior in normal natural occlusions and relate this finding with the Interlandi’s method of selection of the mandibular anterior arch. The sample was 9 study models of the lower arch (5 males and 4 females between 13-17 years) in normooclusion, with mild crowding, no facet of wear, without coronary fracture, no decay or restorations and without some kind of tooth abnormality in shape, size and number. It was the digitizing of models (with points of reference on cusp of canines, interincisor point and canine distal face) with a graph paper (for the calibration software Corel Draw x 5), with same conditions (brightness, contrast, extension 100) and saved in jpg format. Once calibrated the model image, aligned the cusps of the canines in the horizontal plane. First technique with the formation of the segment arch individualized for...
13
artículo
Publicado 2013
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The aim of the study is to find the shape of arch anteroinferior in normal natural occlusions and relate this finding with the Interlandi’s method of selection of the mandibular anterior arch. The sample was 9 study models of the lower arch (5 males and 4 females between 13-17 years) in normooclusion, with mild crowding, no facet of wear, without coronary fracture, no decay or restorations and without some kind of tooth abnormality in shape, size and number. It was the digitizing of models (with points of reference on cusp of canines, interincisor point and canine distal face) with a graph paper (for the calibration software Corel Draw x 5), with same conditions (brightness, contrast, extension 100) and saved in jpg format. Once calibrated the model image, aligned the cusps of the canines in the horizontal plane. First technique with the formation of the segment arch individualized for...
14
tesis de grado
Publicado 2025
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La presente tesis propone la implementación del algoritmo Practical Non-linear Model Predictive Control (PNMPC) para controlar el lazo de nivel del Módulo de laboratorio FESTO, el cual se compone de un sistema de dos tanques en cascada conectados por un circuito cerrado donde fluye agua. El PNMPC es un algoritmo de control que soluciona el problema de la no linealidad de los sistemas de nivel sin comprometer el rendimiento del proceso control. Para llevar a efecto esta estrategia de control se ha escrito un código en MATLAB que envía y recibe datos de la planta mediante la arquitectura de comunicación OPC UA a un PLC, que se encarga de operar los componentes del Módulo FESTO. También, se aplicó técnicas de control, usualmente, vistas en los cursos de automatización tales como el controlador PI y el controlador Generalize Predictive Control (GPC) para comparar su rendimiento con...
15
artículo
Estimation formulas have been established for the establishment of body surface area (BSA), using live weight (LW) and body length for calculation. The objective of this work was to compare four estimation formulas of the BSA – Mitchell [0.09 × LW0.69], Brody [0.14 × LW0.57], Johnson et al. [0.235 × LW0.49], Moulton [0.158 × LW5/8] and Hogan and Skouby [LW0.4 × (body length)0.6 × 217] – and three non-linear models – logistic [–y=a/(1 + be-cx)], Gompertz [y=a*exp(b*exp(cx))] and von Bertalanffy [y=a(1-be-cx)] – in terms of their ability to describe the growth of BSA in beef cattle and to detect the best estimator. Fifty-three meat cattle (20 males and 33 females) were used, mostly “Bruna dels Pirineus” and their crosses, with ages between 205 and 407 days, estimated live weight of 543±74 kg, which were slaughtered in a commercial abattoir. After the skinning, a photog...
16
artículo
Publicado 2019
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The research addresses occupational burnout on university teachers, understood as progressive loss of energy, emotional exhaustion, fatigue, irritability, negative attitudes and feelings of dissatisfaction. The purpose of the study was to compare the presence of job burnout on teachers of the School of Education and Electronic Engineering from a Public University of Peru. It was developed according to principles of quantitative approach, transactional non-experimental design, and type of substantive, descriptive-comparative research. The sample was made up of 125 teachers from both faculties to which the Occupational Attendance Scale-EDO was administered. This instrument presented the required validity and reliability. The results obtained through the confirmatory factor model of structural equations, estimated through the asymptotic free distribution method, led to the conclusion that t...
17
artículo
Publicado 2017
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The aim of this study was to compare the depth of penetration of a dye into the cervical canal in sheep, simulating an insemination by using a traditional artificial insemination (AI) gun and one with a special design that has at the end an inflatable balloon that prevents reflux of dye. Eighty reproductive tracts of non-pregnant ewes were collected from the local slaughterhouse in Lima, Peru and randomly distributed for catheterization with one of the two AI guns, depositing 0.5 ml of methylene blue. The balloon of the second AI gun was inflated before depositing the die. Subsequently, the cervical canal was exposed and the depth of entry of the AI guns and the dye were measured considering the edge of the first cervical ring as zero (0). Both AI guns penetrated 19.9 ± 9.6. The die reached the same depth with the traditional gun and 60.0 ± 9.7 mm with the modified pipette (p<0.05)....
18
artículo
Objetive: The investigation consisted in investigating and validating an evaluation model of teacher's performance through the modeling of structural SEM equations applying LISREL. Method: An initial model based on the results of investigations and data from bibliographic referents was proposed. In previous studies they only consider the influence of some variables over the result variable. The proposed initial model consists of fourteen constructs. Six exogenous and six endogenous with their respective observable or measureable variables and in accordance with the causal methodology a diagram of cause is plotted — effect among the constructs, each relationship between the variables is codified for its statistical treatment. Information about the observable variables was collected through previously validated questionnaires from three sources: students, teachers and the immediate autho...
19
artículo
Objetive: The investigation consisted in investigating and validating an evaluation model of teacher's performance through the modeling of structural SEM equations applying LISREL. Method: An initial model based on the results of investigations and data from bibliographic referents was proposed. In previous studies they only consider the influence of some variables over the result variable. The proposed initial model consists of fourteen constructs. Six exogenous and six endogenous with their respective observable or measureable variables and in accordance with the causal methodology a diagram of cause is plotted — effect among the constructs, each relationship between the variables is codified for its statistical treatment. Information about the observable variables was collected through previously validated questionnaires from three sources: students, teachers and the immediate autho...
20
artículo
Objetive: The investigation consisted in investigating and validating an evaluation model of teacher's performance through the modeling of structural SEM equations applying LISREL. Method: An initial model based on the results of investigations and data from bibliographic referents was proposed. In previous studies they only consider the influence of some variables over the result variable. The proposed initial model consists of fourteen constructs. Six exogenous and six endogenous with their respective observable or measureable variables and in accordance with the causal methodology a diagram of cause is plotted — effect among the constructs, each relationship between the variables is codified for its statistical treatment. Information about the observable variables was collected through previously validated questionnaires from three sources: students, teachers and the immediate autho...
