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1
tesis de maestría
Publicado 2024
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En el ámbito del mantenimiento eléctrico, es habitual realizar mediciones puntuales de parámetros eléctricos como corriente y voltaje de baja tensión. El tiempo que transcurre entre que el personal realiza la medición y se culmina el análisis de datos para detectar anomalías es de aproximadamente una semana. Las anomalías que no se identifican a tiempo pueden escalar rápidamente, afectando tanto el desempeño del sistema eléctrico y los indicadores clave del negocio. Las consecuencias de la no detección oportuna de una anomalía son la reducción en la venta de energía, reducción de la confiabilidad y el impacto en la satisfacción al cliente. La presente tesis tiene como objetivo desarrollar un modelo de aprendizaje automático para la detección de anomalías en un transformador de una empresa de distribución eléctrica. Se centra en la identificación de tres tipos prin...
2
tesis de maestría
Publicado 2020
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Objectives: Validate and evaluate the acceptability of an interactive video to detect social anxiety in adolescents of a Lima metropolitan school. Materials and methods: The study had an observational design, corresponding to the evaluation of diagnostic tests. The interactive video was validated obtaining sensitivity and specificity, comparing it with clinical interviews. The interactive video was developed in Unity 3D through the high-fidelity prototyping methodology. Acceptability was assessed through the constructs of income made, perceived ease of use and intention of behavior of the Technological Acceptance Model (TAM), in addition to perceived compatibility and resistance to change. Results: 147 adolescents were evaluated. 50% of the adolescents evaluated were detected with symptoms of social anxiety, mild or moderate. The prototype had a sensitivity and specificity of 63.51% and ...
3
tesis de grado
Publicado 2020
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La presente investigación tuvo como objetivo principal determinar de qué manera BIM (Building Information Modeling) detectará las interferencias en la etapa de diseño en una edificación, distrito y provincia de Jaén, región Cajamarca. Para ello se realizó el modelado 3D de una edificación familiar de 03 pisos utilizando software aplicativo BIM (Building Information Modeling), Autodesk Revit 2018 a partir de los planos virtuales en AutoCAD de arquitectura, estructuras e instalaciones sanitarias y eléctricas tanto en planta, corte (elevación) y detalle, y para la identificación de interferencias utilizamos el software de Autodesk Navisworks Manage 2018; Finalmente se obtuvieron resultados que destacan el beneficio de implementar el BIM (Building Information Modeling) en la etapa de diseño en donde se obtuvo la detección de mil setecientos seis (1706) interferencias detectadas...
4
tesis de grado
Publicado 2025
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Un asunto en salud pública de importancia en el Perú es el de la epilepsia; enfermedad que, entre el carácter en esencia, imprevisible de sus manifestaciones - las cuales son conocidas como crisis epilépticas - y los bajos índices de diagnóstico y de tratamiento, repercute en la calidad de vida de las personas que la padecen; siendo esto particularmente notable en quienes sufren de un tipo particular de crisis epilépticas denominadas tónico-clónicas, las cuales se caracterizan por la aparición de una actividad motora descontrolada precedida por la pérdida de conciencia constituyendo un motivo frecuente de atención en los servicios de emergencia y que conlleva a implicancias tanto en el ámbito sanitario como en el económico y social. Ante esta problemática en el presente trabajo se desarrolla un modelo que permite detectar estos tipos de crisis consideradas de alto riesgo, ...
5
tesis de maestría
Publicado 2014
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Desde el ámbito teórico, el estudio apunta a examinar la literatura relevante sobre el efecto ingreso en modelos de elección discreta de manera fácil e ilustrativa. En el ámbito empírico, el estudio busca detectar la presencia del efecto ingreso basado en la data de encuestas de preferencias declaradas en transportes para Lima Metropolitana. Desde los años 90, las políticas en materia de transporte urbano han estado orientados a relajar algunas reglas relacionadas a la entrada y salida de mercado, calidad de servicio y desregulación de las tarifas, entre otros. El gobierno central del Perú ha emprendido importantes proyectos en transporte urbano como son los metros. Estos proyectos requieren de una importante inversión, lo cual debe llevar a realizar un profundo análisis respecto a los beneficios sociales que genera. Ignorar el efecto ingreso dentro de la evaluación de un pr...
6
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...
7
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...
8
artículo
Publicado 2021
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Digitization has brought with it an increase in the supply of media and content, which has led to an increase in competition for news companies both in terms of audience and income. But how to convert that audience that is migrating from paper to the digital environment into income? In this paper, an exploratory and descriptive analysis of the business models of journalistic companies in the digital environmentis made. For this reason, three objectives are proposed: to know the main marketing strategies, identify the conditions that have influenced decision-making and detect market challenges. Based on which, the reports made by the Reuters Institute, Pew Research Center, Poynter Institute, Evoca and the Association of Information Media are taken as a reference, as well as the contributions of various researchers on thesubject. It is found that, among the strategies developed, charging f...
9
artículo
Publicado 2021
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Digitization has brought with it an increase in the supply of media and content, which has led to an increase in competition for news companies both in terms of audience and income. But how to convert that audience that is migrating from paper to the digital environment into income? In this paper, an exploratory and descriptive analysis of the business models of journalistic companies in the digital environmentis made. For this reason, three objectives are proposed: to know the main marketing strategies, identify the conditions that have influenced decision-making and detect market challenges. Based on which, the reports made by the Reuters Institute, Pew Research Center, Poynter Institute, Evoca and the Association of Information Media are taken as a reference, as well as the contributions of various researchers on thesubject. It is found that, among the strategies developed, charging f...
10
artículo
Publicado 2019
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The consulting companies that are engaged in market research and the development of public and private projects are facing the excessive time spent in the field, which results in the loss of customers and under the commitment of the services that are offered. During the data collection, there is a non-sample error, which comes from the interviewee, where they are not sufficiently objective and sincere with their performance on the survey. For this study we consider the veracity patterns to admit a survey that can come from: questionnaires, scales or inventories. The objective of this study was to develop an android application that allows to elaborate a veracity model of surveys in urban and rural areas. In this context, the research shows a solution based on a model of veracity of surveys, which is based on an android application and that can be used in any District, it also allows to p...
11
artículo
Publicado 2019
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The consulting companies that are engaged in market research and the development of public and private projects are facing the excessive time spent in the field, which results in the loss of customers and under the commitment of the services that are offered. During the data collection, there is a non-sample error, which comes from the interviewee, where they are not sufficiently objective and sincere with their performance on the survey. For this study we consider the veracity patterns to admit a survey that can come from: questionnaires, scales or inventories. The objective of this study was to develop an android application that allows to elaborate a veracity model of surveys in urban and rural areas. In this context, the research shows a solution based on a model of veracity of surveys, which is based on an android application and that can be used in any District, it also allows to p...
12
artículo
Publicado 2019
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The consulting companies that are engaged in market research and the development of public and private projects are facing the excessive time spent in the field, which results in the loss of customers and under the commitment of the services that are offered. During the data collection, there is a non-sample error, which comes from the interviewee, where they are not sufficiently objective and sincere with their performance on the survey. For this study we consider the veracity patterns to admit a survey that can come from: questionnaires, scales or inventories. The objective of this study was to develop an android application that allows to elaborate a veracity model of surveys in urban and rural areas. In this context, the research shows a solution based on a model of veracity of surveys, which is based on an android application and that can be used in any District, it also allows to p...
13
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 ...
14
tesis de grado
Publicado 2023
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La evaluación de la coherencia es un problema relacionado al área del procesamiento del lenguaje natural, cuya complejidad radica principalmente en el análisis de la semántica y contexto de las palabras del texto. Afortunadamente, la arquitectura Bidirectional Encoder Representation from Transformers (BERT) puede capturar las variables antes mencionadas y representarlas como embeddings para realizar Fine-tunings. El presente estudio propone un modelo Second Fine-Tuned basado en BERT para detectar oraciones inconsistentes (evaluación de la coherencia) en abstracts científicos escritos en español/inglés. Para ello se han propuesto 2 métodos formales para la generación de abstracts incoherentes: Random Manipulation (RM) y K-means Random Manipulation (KRM). Se realizaron 6 experimentos; demostrando que realizar el Second Fine-Tuned mejora la detección de oraciones inconsistentes c...
15
artículo
Publicado 2022
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COVID-19 has caused an economic crisis in the business world, leaving limitations in the continuity of the payment chain, with companies resorting to credit access. This study aimed to determine the optimal machine learning predictive model for the credit risk of companies under the Reactiva Peru Program because of COVID-19. A multivariate regression analysis was applied with four regressor variables (economic sector, granting entity, amount covered, and department) and one predictor (risk level), with a population of 501,298 companies benefiting from the program, under the CRISP-DM methodology oriented especially for data mining projects, with artificial intelligence techniques under the machine learning Lasso and Ridge regression models, with econometric algebraic mathematical verification to compare and validate the predictive models using SPSS, Jamovi, R Studio, and MATLAB software. ...
16
artículo
Publicado 2015
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Creativity is an essential element of scientific management where decisions are made by rational paradigm that involves the use of convergent criteria in the management, organization and hierarchy of problems. The process engineer emphasizes the systematic and rational side, which is the visible and concrete engineer’s work. The invisible part constitutes the heuristic and creative side, comprising the imaginative and divergent view that complements the first and develops as new tasks arise in the areas of research and design, which requires vision and innovation. This paper aims to highlight the creativity of engineers. They have taken their creative products whose description and study, must lead to identifying new ways of seeing reality, beyond traditional approaches, and understand the orientation of creativity, to improve understanding and problem solving. Creativity in industrial...
17
artículo
Publicado 2015
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Creativity is an essential element of scientific management where decisions are made by rational paradigm that involves the use of convergent criteria in the management, organization and hierarchy of problems. The process engineer emphasizes the systematic and rational side, which is the visible and concrete engineer’s work. The invisible part constitutes the heuristic and creative side, comprising the imaginative and divergent view that complements the first and develops as new tasks arise in the areas of research and design, which requires vision and innovation. This paper aims to highlight the creativity of engineers. They have taken their creative products whose description and study, must lead to identifying new ways of seeing reality, beyond traditional approaches, and understand the orientation of creativity, to improve understanding and problem solving. Creativity in industrial...
18
tesis de grado
Publicado 2025
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This research focuses on the application of a comprehensive lean production model to improve the root causes that cause the low efficiency rate within the sewing line of a textile SME. It can be confirmed that the implementation of this model allows to reduce the rate of reprocessed products, increase the delivery rate, improve the mean time between failures and decrease the average time between repairs; therefore, improve the efficiency in the production of the sewing line. In this case study, the Lean methodology was used to detect the root causes that produce the main problem of the work and Total Productive Maintenance (TPM), where what is known as preventive maintenance and the standardization of processes is applied to solve the root causes and that this continues to be carried out over time. The implementation was carried out in the sewing area of the company where results were ac...
19
tesis de grado
Publicado 2022
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Según estadísticas a la fecha, se estableció que la enfermedad conocida como Covid-19 fue contraída por 219 millones de personas, de las cuales 4.55 millones concluyeron en muerte. Es así que para prevenir el avance de la enfermedad se establecieron protocolos de seguridad. Uno de los principales protocolos es el que establece el uso de mascarillas protectoras las cuales deben cubrir adecuadamente nariz y boca. Es en ese sentido que el objetivo de este artículo fue clasificar imágenes de rostros usando mascarillas protectoras del Covid-19, en las clases identificadas como: correct mask, incorrect mask y no mask; con un modelo Hibrido de Quantum Transfer Learning, utilizando para tal fin un dataset de 660 personas de ambos sexos (masculino y femenino), con edades de entre los 18 a 86 a˜nos. El modelo de transfer learning clásico escogido fue ResNet-18, las capas variacionales del...
20
objeto de conferencia
Publicado 2022
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Este artículo propone un análisis y una descripción matemática de la función de reconexión para 220kV y 500kV, las oscilaciones de potencia y su mejora en la estabilidad global del sistema eléctrico. Los hallazgos fueron el algoritmo de detección de oscilaciones de potencia causadas por la interacción del condensador fijo en serie (FSC), los reactores en derivación y las líneas aéreas; los resultados también demuestran que el análisis ATP permite detectar oscilaciones de amortiguación en 220kV de 3,1 pu. La eficacia de la reconexión de la línea eléctrica fue probada por simulaciones ATP para carga máxima y diferentes posiciones de la falla en el camino de la línea. This research article proposes an analysis and mathematical description of the reclosure function for 220kV and 500kV, the power oscillations and thereby improve the overall power system stability. Our find...
