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1
tesis de maestría
Desarrolla un programa de computadora en Quick Basic que permita el cálculo y optimización del corte y relleno de material en proyectos lineales como carreteras, canales, vías férreas, etc. El programa provee una plataforma amigable de fácil uso que permite calcular y optimizar rápidamente el material de excavación, relleno, así como el material de préstamo de canteras y eliminación de material excedente en botaderos designados.
2
artículo
This work verifies the instrumental characteristics of the CCD detector which is part of the UNI astronomical observatory. We measured the linearity of the CCD detector of the SBIG STXL6303E camera, along with the associated gain and readout noise. The linear response to the incident light of the detector is extremely linear (R2 =99.99%), its effective gain is 1.65 ± 0.01 e-/ADU and its readout noise is 12.2 e-. These values are in agreement with the manufacturer. We confirm that this detector is extremely precise to make measurements for astronomical purposes.
3
artículo
Publicado 2023
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In the canned fish production program, it is very important to calculate its forecast through statistical models that minimize the error of the projections and that allow estimating the quantities to be produced. The objective of this research work is to select a forecast model for the consumption of canned fish in Peru for an industrial fishing project using time series models. Prediction models such as linear regression, time series decomposition and Winters’ method were used. The input data was the monthly domestic sales of canned fish from the years 2011 to 2014. The prediction error measures such as the mean absolute deviation (MAD) and the mean absolute percentage error (MAPE) of the prediction of a company were compared for a year (2014), two years (2013-2014), three years (2012-2014) and four years (2011-2014) to validate with the prediction for the years 2015-2019. The predict...
4
artículo
This project aims to develop a performance evaluation model that serves as an application guide for companies with both linear and matrix structures. The project will primarily be conducted in three stages. The initial stage involves an analysis of organizational structures and an examination of various performance evaluation models and frameworks. Subsequently, in the second stage of the project, based on the findings from the analysis stage, the model proposal will be developed. Finally, in the third stage, validation will be carried out with experts to assess the feasibility of the proposal.
5
artículo
Publicado 2023
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Purpose: The purpose of this paper is to determine the impact of corporate investments in corporate social responsibility (CSR), measured by the environmental, social and government (ESG) rating, on the market valuation of a firm's stocks and to explain the regional differences in the degree of this influence. Design/methodology/approach: The empirical study uses linear and non-linear panel regression models for a panel sample of 951 firms listed in Asia, North America and Europe operating in innovative industries. Findings: The CSR score was found to be significant in terms of stock excess return on the regional level. However, this finding cannot be extrapolated to the global scale. ESG rating is priced by the European and North American markets negatively, while in the Asian market, it is positive. This penalty (negative influence) is greater than the reward for one point increase in ...
6
artículo
Publicado 2020
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In this work, maximum flows observed in the Paranapanema river basin are modeled by a mixture of two GEV distributions whose components correspond to the summer and winter subpopulations. The nonlinear discriminant function allowed to confirm the assumption of mixture model.The proposed model is then used to determine probabilities of exceedance and return periods associated with extreme flows, which are of fundamental importance for hydraulic projects. The results show significant differences when a mixture model is used and therefore an approach more coherent with the observed data.
7
artículo
Publicado 2020
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In this work, maximum flows observed in the Paranapanema river basin are modeled by a mixture of two GEV distributions whose components correspond to the summer and winter subpopulations. The nonlinear discriminant function allowed to confirm the assumption of mixture model.The proposed model is then used to determine probabilities of exceedance and return periods associated with extreme flows, which are of fundamental importance for hydraulic projects. The results show significant differences when a mixture model is used and therefore an approach more coherent with the observed data.
8
artículo
This work verifies the instrumental characteristics of the CCD detector which is part of the UNI astronomical observatory. We measured the linearity of the CCD detector of the SBIG STXL6303E camera, along with the associated gain and readout noise. The linear response to the incident light of the detector is extremely linear (R2 =99.99%), its effective gain is 1.65 ± 0.01 e-/ADU and its readout noise is 12.2 e-. These values are in agreement with the manufacturer. We confirm that this detector is extremely precise to make measurements for astronomical purposes.
9
artículo
Publicado 2019
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The present research work consists in the development of a method where a mathematical model of a fish canning plant installation project is proposed, considering the investment, the production costs, the operating expenses, the financial statements, and as indicators for decision making, the net financial present value and internal rate of financial return. Then, the mathematical model is optimized using a non-linear programming to choose the most convenient investment alternative, then a Monte Carlo simulation is carried out in which random variables of plant and market are considered that allow the investor to estimate the minimum values and máximum that can happen in the financial indicators and finally the discussion of results.
10
artículo
Publicado 2019
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The present research work consists in the development of a method where a mathematical model of a fish canning plant installation project is proposed, considering the investment, the production costs, the operating expenses, the financial statements, and as indicators for decision making, the net financial present value and internal rate of financial return. Then, the mathematical model is optimized using a non-linear programming to choose the most convenient investment alternative, then a Monte Carlo simulation is carried out in which random variables of plant and market are considered that allow the investor to estimate the minimum values and máximum that can happen in the financial indicators and finally the discussion of results.
11
artículo
Publicado 2023
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The purpose of this study was to determine the influence of occupational health and safety variables on the work performance of personnel at the Proyecto Especial Tacna (Tacna Special Project), a Peruvian public institution, during the COVID-19 pandemic. To carry out the study, a quantitative, descriptive, and correlational non-experimental design was used with a census sample, a questionnaire was applied to 42 workers in the months from July to August 2022. For the analysis of the results, the statistical technique of a simple linear regression model was applied to investigate the relationships of both variables to prove the hypotheses according to the dimensions studied. The study findings showed that there is a significant relationship between occupational health and safety; and the work performance of the organization's personnel with a value of 0.792. Therefore, there is a need to i...
12
artículo
Publicado 2025
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Objetivo: Determinar o impacto da evolução intertemporal da situação financeira de um projeto de investimento sobre a estimativa de sua lucratividade. Métodos: Foi realizado um estudo quantitativo de escopo explicativo. Foi formulado um modelo matemático de otimização intertemporal com restrições, cujo objetivo é maximizar a lucratividade. Foi desenvolvida uma aplicação a um caso hipotético e, para analisar a robustez do modelo, foram gerados 150 cenários por simulação em computador nos cenários de taxas de alavancagem e de desconto constantes e variáveis. Uma análise de regressão linear foi aplicada a esses cenários para medir a importância das variáveis explicativas: covenants financeiros, índice de pagamento de dividendos e índice de alavancagem. Resultados: O modelo que considera um índice de alavancagem e taxas de desconto variáveis é estatisticamente si...
13
artículo
Publicado 2025
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Public infrastructure projects in Peru face structural challenges in supply chain management, resulting in delays, cost overruns, and quality deficiencies. This study examined the extent to which supply chain resilience influences project effectiveness regarding time, cost, and quality standards. A quantitative, correlational–explanatory, non-experimental design was adopted, using surveys administered to professionals engaged in public works management. Statistical analysis included Pearson correlation, linear regression, Chi-square, ANOVA, and logistic regression. Results showed a strong and significant relationship between resilience and effectiveness (r = 0.782; p < 0.05), with resilience explaining 61.1% of performance variability. Critical deficiencies were identified in administrative coordination, reliance on external suppliers, and insufficient quality control. Conversely, i...
14
artículo
Publicado 2018
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DR & MR Comunicaciones y Servicios LTDA. es una organización enfocada a realizar proyectos que tienen como principal objetivo la instalación de fibra óptica y sus equipos correspondientes; la empresa está encargada desde el diseño, planeación y presupuesto hasta la construcción de cada proyecto; los cuales se desarrollan en ciudades fuera de Bogotá; Causando así que la empresa deba estar tener pendiente sobrecostos en la operación por traslados y viáticos que necesita cada técnico para el desarrollo de un proyecto. Partiendo de los retos logísticos y sobrecostos previamente mencionados el siguiente documento plantea un modelo que permite a la empresa DR&MR definir la asignación de recursos a usar en cada uno de sus proyectos, mientras maximiza las ganancias de esta, para ello, toma como base el tiempo en el que requiere terminar cada uno de los proyectos. Para realizar el p...
15
tesis de grado
Publicado 2024
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El estudio presenta un modelo preliminar para determinar la viabilidad de instalación de una planta procesadora de snacks hechos de frutos y verduras bañados con chocolate de cacao en Perú. Este producto se venderá al consumidor final en paquetes de 50 gramos, y para los compradores intermediarios en una caja embalada de 10 unidades. El proyecto se desarrolla en Lima y se dirige a un público de segmento A y B, personas entre 18 y 55 años, las cuales se interesan en la alimentación saludable. Para calcular la demanda nos basamos en un modelo de proyección de la población con un historial de cinco años seguidos del 2016 hasta el 2020. La proyección lineal indica que la demanda para el último año 2025 asciende a un total de 552 548 unidades, siendo la más alta en los cinco años de proyección. Respecto a la localización se empleó un modelo de ranking de factores, basándono...
16
tesis de grado
Publicado 2023
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Este estudio describe la implementación de recomendaciones de mejora en una empresa que transporta repuestos para vehículos pesados. En primer lugar, se aplicó la programación lineal como base del proyecto para construir un modelo matemático para optimizar las rutas de entrega y evitar devoluciones por retrasos en el envío. El estudio implica el uso de las siguientes medidas en 2 etapas; en la etapa 1 se generaron las ecuaciones lineales, variables, funciones objetivo y restricciones que ayudarán a crear un modelo matemático del proceso de programación, en la etapa 2 la implementación y desarrollo de herramientas del lean logistics, que incluyen una serie de etapas, comenzando la identificación de problema, causas y luego las metodologías 5S y Kanban. De esta forma se obtienen los siguientes resultados: Reducción del tiempo del proceso de preparación en un 56.25%, reducció...
17
artículo
Publicado 2012
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The Instituto para el Depósito de Valores (INDEVAL) is the Central Securities Depository of Mexico. It is the only Mexican institution authorized to perform, in an integrated manner, the activities of safe-keeping, custody, management, clearing, settlement and transfer of securities. In this article, we report the modeling, simulation and analysis of a new Securities Settlement System (SSS) implemented by INDEVAL, as part of a project for the implementation of a safer and more efficient operating system. The main objective of this research was to use reduced amounts of cash and securities, within reasonable periods of time, for the settlement of securities of the Mexican market. A linear programming model for the netting and clearing of operations was used. The performance of the new SSS was evaluated by performing experiments using a deterministic simulation model under different opera...
18
tesis de grado
Publicado 2023
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El presente trabajo fue desarrollado en una mina dedicada a la extracción de oro mediante el proceso de lixiviación en pads, ubicada en el departamento de la Libertad y define un modelo de mejora para el ratio de consumo de cianuro, reactivo usado en el proceso de recuperación de oro, mediante la implementación de herramientas TOC, programación lineal y Poke Yoke. Las principales causas del incremento del ratio de cianuro en la planta de procesos se debe a un programa de cianuración para riego de celdas no diferenciado por etapa, un aumento de flujo de solución rica por demanda de planta y a la regulación manual de la dosificación de cianuro y tiempos de traslado. El actual problema ha incrementado el costo de cianuro de sodio para el periodo de un año en $776,212 que representan un sobre costo de 14% de la facturación anual por consumo de cianuro. Para contrarrestar el proble...
19
tesis de grado
Publicado 2022
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Currently, a naturalistic trend has been generated in the world, which consists in the increase in the consumption of herbal products, such is the case of fillets based on muña and culen that, thanks to their curative and digestive properties, help to combat gastritis. This trend allowed to find a market in which the project can be developed. To determine the specific demand of the present study, the historical data of a substitute product (green tea) was analyzed to find the apparent internal demand. Projected this trend with a linear regression (2021 to 2025) and segmenting it under the urban population over 16 years of socioeconomic levels A, B and C of Metropolitan Lima and data collected from the survey as intensity, intention and preference factor. The ranking of factors for macro localization and micro localization was used in order to find the most suitable place for the impleme...
20
artículo
Publicado 2020
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Objective. This study aimed to project the data from Moyers tables through linear regression equations and present a new instrument that facilitates the analysis of Moyers in mixed dentition. methods. The classical tables of Moyers were used through four linear equations projected data for both values, men and women, the roulette was built from a new table with values projected from the 19 mm to 30,5 mm corresponding to the sum of the lower incisors. Linear regression and linear equations were used to project values for both, maxilla and mandible. Roulette model was devised following the Korkhaus Orthometer model and emulating the classic medical gestation tables. Results. Two tables were obtained with new data values from 19 mm to 30,5 mm measurement, measures which correspond to the sum of the mesiodistal width of the lower incisors. The new values include projections for both, the max...
