Ingenieria y Ciencia最新文献

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Aprendizaje profundo para escalas pronósticas en la prescripción a pacientes con riesgo de sangrado gastrointestinal 胃肠道出血风险患者处方预测量表的深度学习
Ingenieria y Ciencia Pub Date : 2021-12-01 DOI: 10.17230/ingciencia.17.34.1
Carlos Calderón-Vargas, José Muñoz Castaño, María Alejandra Vargas Rincón, Víctor Manuel Rincón Acosta, Miguel Mendieta Hernández
{"title":"Aprendizaje profundo para escalas pronósticas en la prescripción a pacientes con riesgo de sangrado gastrointestinal","authors":"Carlos Calderón-Vargas, José Muñoz Castaño, María Alejandra Vargas Rincón, Víctor Manuel Rincón Acosta, Miguel Mendieta Hernández","doi":"10.17230/ingciencia.17.34.1","DOIUrl":"https://doi.org/10.17230/ingciencia.17.34.1","url":null,"abstract":"La evolución de la medicina en los tiempos actuales ha ido de la mano de la tecnología donde cada vez más se implementan soluciones que apoyan ciertos procedimientos médicos con el objetivo de apoyar el ejercicio de los profesionales de la medicina en su oficio. El procesamiento y análisis de datos se ha convertido en un recurso imprescindible en la práctica de cualquier profesión, actualmente, en los hospitales, más puntualmente en el hospital universitario la samaritana, no se posee una herramienta que permita apoyar el diagnóstico para determinar el suministro o no, de los inhibidores de bombas de protones, por lo tanto hemos desarrollado una aplicación web utilizando un modelo de aprendizaje automático, basado en arboles de decisiones por medio de la aplicación weka, que luego del análisis de los datos recogidos, permita al médico contar con una herramienta para el apoyo de este procedimiento. Esperamos que con la utilización de esta aplicación los médicos puedan realizar un análisis efectivo antes de recetar o no los IBPs.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41468278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determinantes del precio de la vivienda nueva en Bogotá para el año 2019: una aproximación a través de un modelo semiparamétrico de regresión espacial bogota 2019年新房价格的决定因素:半参数空间回归模型的近似
Ingenieria y Ciencia Pub Date : 2021-12-01 DOI: 10.17230/ingciencia.17.34.2
Jurgen Toloza-Delgado, Oscar Melo-Martínez, Juan Azcarate-Romero
{"title":"Determinantes del precio de la vivienda nueva en Bogotá para el año 2019: una aproximación a través de un modelo semiparamétrico de regresión espacial","authors":"Jurgen Toloza-Delgado, Oscar Melo-Martínez, Juan Azcarate-Romero","doi":"10.17230/ingciencia.17.34.2","DOIUrl":"https://doi.org/10.17230/ingciencia.17.34.2","url":null,"abstract":"Este trabajo toma como punto de partida los recientes avances en el campo de la econometría espacial para desarrollar un modelo de regresión semiparamétrico que permite la inclusión de no linealidades y el modelamiento de la heterogeneidad espacial a través de una función bidimensional que depende de las coordenadas geográficas. La metodología se aplica en un modelo hedónico para el precio de la vivienda nueva en Bogotá donde se obtiene un ajuste destacable, en términos del error cuadrático medio y el R2. El resultado empírico muestra que el estrato, la condición de entrega y el estado constructivo afectan el precio de manera lineal, mientras que el área, y las distancias a parques, vías y estaciones de Transmilenio presentan resultados no lineales; además se logró modelar la tendencia espacial que representa la ubicación sobre el valor de la vivienda, evidenciando un incremento hacia el nororiente de la ciudad. Así, se concluye que el modelo estimado permite medir de manera flexible la relación entre las variables explicativas y la dependiente, estableciéndose como una buena alternativa para entender la formación de los precios en el mercado inmobiliario.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45476506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lie Algebra Representation, Conservation Laws and Some Invariant Solutions for a Generalized Emden-Fowler Equation 一类广义Emden-Fowler方程的Lie代数表示、守恒律和一些不变解
Ingenieria y Ciencia Pub Date : 2021-12-01 DOI: 10.17230/ingciencia.17.34.5
Gabriel Ignacio Loaiza Ossa, Y. Acevedo-Agudelo, O. Londoño-Duque, Danilo A. García Hernández
{"title":"Lie Algebra Representation, Conservation Laws and Some Invariant Solutions for a Generalized Emden-Fowler Equation","authors":"Gabriel Ignacio Loaiza Ossa, Y. Acevedo-Agudelo, O. Londoño-Duque, Danilo A. García Hernández","doi":"10.17230/ingciencia.17.34.5","DOIUrl":"https://doi.org/10.17230/ingciencia.17.34.5","url":null,"abstract":"All generators of the optimal algebra associated with a generalization of the Endem-Fowler equation are showed; some of them allow to give invariant solutions. Variational symmetries and the respective conservation laws are also showed. Finally, a representation of Lie symmetry algebra is showed by groups of matrices.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46095691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calidad del aire en el Valle de Aburrá, ¿Qué podríamos esperar de la ciudad inteligente? 阿布拉山谷的空气质量,我们对智能城市有什么期望?
Ingenieria y Ciencia Pub Date : 2021-05-12 DOI: 10.17230/INGCIENCIA.17.33.8
Nora Cadavid-Giraldo, Ana Zuelima Orrego Guarín, Humberto Barrera Jiménez
{"title":"Calidad del aire en el Valle de Aburrá, ¿Qué podríamos esperar de la ciudad inteligente?","authors":"Nora Cadavid-Giraldo, Ana Zuelima Orrego Guarín, Humberto Barrera Jiménez","doi":"10.17230/INGCIENCIA.17.33.8","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.17.33.8","url":null,"abstract":"El fenómeno global de crecimiento urbano, unido a la rápida penetración de la telefonía móvil, internet de las cosas, sensórica, automatización, intercambio de datos en tiempo real, etc, confluyen en un tema que genera grandes expectativas: la ciudad inteligente. Entre sus múltiples implicaciones, en este texto se destacan hechos relevantes para la gestión de la calidad del aire en el Valle de Aburrá. El punto de partida es Plan de Gestión de la Calidad del Aire para el Valle de Aburrá, con vigencia 2017-2030. Se presenta una correlación entre las oportunidades de gestión que la ciudad inteligente ofrece a la calidad del aire y las líneas estratégicas de dicho plan. Se identifican importantes soluciones desde el enfoque bottom-up, centradas en el uso masivo de la información y la apropiación de herramientas digitales para favorecer la autogestión de las emisiones en todos los ámbitos – fuentes fijas y móviles, públicas y particulares.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"17 1","pages":"185-222"},"PeriodicalIF":0.0,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46427269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Propuesta de un dispositivo refrigerante con celdas Peltier alimentado con un sistema fotovoltaico independiente: un caso de estudio 由独立光伏系统供电的Peltier电池冷却装置的建议:一个案例研究
Ingenieria y Ciencia Pub Date : 2021-05-12 DOI: 10.17230/INGCIENCIA.17.33.7
Andrés Felipe Solis Pino, Ginna Andrea Ramirez Palechor, Luis Fernando Alape Realpe
{"title":"Propuesta de un dispositivo refrigerante con celdas Peltier alimentado con un sistema fotovoltaico independiente: un caso de estudio","authors":"Andrés Felipe Solis Pino, Ginna Andrea Ramirez Palechor, Luis Fernando Alape Realpe","doi":"10.17230/INGCIENCIA.17.33.7","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.17.33.7","url":null,"abstract":"Actualmente, múltiples estudios intentan establecer alternativas que permitan disminuir las consecuencias del gasto energético y los gases de efecto invernadero. En este sentido, la energía solar fotovoltaica se ha convertido en una opción factible para aplacar esta problemática, asimismo, se han buscado nuevas tecnologías para disminuir el gasto energético de los dispositivos refrigerantes, porque consumen emasiada energía y utilizan refrigerantes dañinos para cumplir su tarea. Por esta razón, las celdas Peltier pueden ser una opción viable para disminuir la temperatura en espacios cerrados sin generar residuos o emisiones nocivas. En el presente trabajo se plantea combinar estas iniciativas en un sistema unificado para aprovechar ambas tecnologías, implementando un sistema refrigerante que utiliza el efecto termoeléctrico para reducir la temperatura en su interior, que es alimentado por un sistema fotovoltaico autónomo utilizando algoritmos de seguimiento del punto de máxima potencia para mejorar su rendimiento. Los resultados reflejan que el dispositivo es capaz de disminuir la temperatura en su interior, permitiendo la conservación de elementos a temperaturas bajas y constantes, sin los inconvenientes de los refrigeradores comunes. Finalmente, se concluye que este sistema es una posibilidad plausible para sustituir las tecnologías de enfriamiento donde el acceso a la energía eléctrica es limitado.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"17 1","pages":"151-183"},"PeriodicalIF":0.0,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42794969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Inference in Multiple Linear Regression Model with Generalized Secant Hyperbolic Distribution Errors 具有广义割线双曲型分布误差的多元线性回归模型的推理
Ingenieria y Ciencia Pub Date : 2021-05-12 DOI: 10.17230/10.17230/INGCIENCIA.17.33.3
Álvaro Alexander Burbano Moreno, Oscar Orlando Melo-Martinez, Q. Qamarul Islam
{"title":"Inference in Multiple Linear Regression Model with Generalized Secant Hyperbolic Distribution Errors","authors":"Álvaro Alexander Burbano Moreno, Oscar Orlando Melo-Martinez, Q. Qamarul Islam","doi":"10.17230/10.17230/INGCIENCIA.17.33.3","DOIUrl":"https://doi.org/10.17230/10.17230/INGCIENCIA.17.33.3","url":null,"abstract":"We study multiple linear regression model under non-normally distributed random error by considering the family of generalized secant hyperbolic distributions. We derive the estimators of model parameters by using modified maximum likelihood methodology and explore the properties of the modified maximum likelihood estimators so obtained. We show that the proposed estimators are more efficient and robust than the commonly used least square estimators. We also develop the relevant test of hypothesis procedures and compared the performance of such tests vis-a-vis the classical tests that are based upon the least square approach.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"17 1","pages":"45-70"},"PeriodicalIF":0.0,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48719536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sizing of Hybrid Photovoltaic-Wind Energy Systems Based on Local Data Acquisition 基于本地数据采集的混合光伏风能系统规模
Ingenieria y Ciencia Pub Date : 2021-05-12 DOI: 10.17230/INGCIENCIA.17.33.6
C. Riaño, Elkin G. Flórez, C. Peña
{"title":"Sizing of Hybrid Photovoltaic-Wind Energy Systems Based on Local Data Acquisition","authors":"C. Riaño, Elkin G. Flórez, C. Peña","doi":"10.17230/INGCIENCIA.17.33.6","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.17.33.6","url":null,"abstract":"Although there are different alternatives to provide energy, there are still remote regions with no nearby possibilities of having an electricity supply that meets their basic needs. Colombia, like many countries, does not have uniform environmental conditions; therefore, applying models for the dimensioning of energy systems based on renewable energy can be inefficient and expensive, making it difficult to access electricity in isolated places. The research aims to develop a sizing strategy for a hybrid system based on locally acquired environmental information to size a system that takes advantage of the natural resources available in the local in the best possible way. Information is collected through a data acquisition system on local environmental conditions, system requirements are established based on energy demand, and a mathematical model is sought that represents the electrical behavior. The model makes it possible to analyze the system’s behavior under variable environmental conditions in the region, thus guaranteeing an adequate dimensioning for a constant supply of low-power energy suitable for residential use. This article presents an alternative to characterize a hybrid power generation system (photovoltaic/wind turbine) through data collected on-site, which, when properly processed, allows the dimensioning of a more appropriate hybrid system to the environmental conditions the environment. The system was implemented in an experimental farm of the University of Pamplona located in the north of Colombia. Based on this strategy, a hybrid system was designed and installed to meet energy demands efficiently.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"17 1","pages":"121-150"},"PeriodicalIF":0.0,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47041840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Experimental Development of Fuzzy Controllers for Thermal and Pneumatic Processes 热气动过程模糊控制器的实验研究
Ingenieria y Ciencia Pub Date : 2021-05-12 DOI: 10.17230/INGCIENCIA.17.33.5
Richard S Hernandez-Mesa, F. Moreno-García, S. Castro-Casadiego, B. Medina-Delgado
{"title":"Experimental Development of Fuzzy Controllers for Thermal and Pneumatic Processes","authors":"Richard S Hernandez-Mesa, F. Moreno-García, S. Castro-Casadiego, B. Medina-Delgado","doi":"10.17230/INGCIENCIA.17.33.5","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.17.33.5","url":null,"abstract":"In this project, a Fuzzy control system is proposed in an industrial process training module with two independent systems between them, one thermal and the other pneumatic. The control algorithm is developed in Python language v3.6 executed by a Raspberry Pi B+, both controllers depend on the error and change in error that are updated in times of 2 s and 1 s, for temperature and pressure respectively, communication with the plants uses A/D and D/A converters, the thermal Fuzzy was analyzed with three temperature references [50,100 and 150]°C, with a rise time of 191 s, 360 s and 505 s; steady state error of 5.5%, 0.7% y 0.7%, in the pneumatic system the speed of change between references is evaluated from 10 psi to 15 psi varying the activation of the compressor at the beginning of the experiments, the settling times obtained are 111 s and 106 s, with the compressor off the result is 116 s and 88 s, besides a maximum excess of 13% with inherent oscillations to the type system that are in an acceptable range.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"17 1","pages":"97-120"},"PeriodicalIF":0.0,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45151570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Landslide Susceptibility Assessment Using the Scoops3D Model in a Tropical Mountainous Terrain 基于Scoops3D模型的热带山地滑坡易感性评价
Ingenieria y Ciencia Pub Date : 2021-05-12 DOI: 10.17230/INGCIENCIA.17.33.4
R. Marín, Ricardo Jaramillo-González
{"title":"Landslide Susceptibility Assessment Using the Scoops3D Model in a Tropical Mountainous Terrain","authors":"R. Marín, Ricardo Jaramillo-González","doi":"10.17230/INGCIENCIA.17.33.4","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.17.33.4","url":null,"abstract":"Many physically-based distributed models study the landslide occurrence using an infinite slope stability analysis, simulating a planar failure, which is not usually applicable to rotational failures and deep landslides. Recently, some three-dimensional distributed physically-based models have been developed that have been applied in different parts of the world. In this research, the Scoops3D model is implemented for a landslide susceptibility analysis in a tropical mountainous terrain of the Colombian Andes (Medellín, Colombia). In addition to identifying the areas susceptible to the occurrence of rotational landslides, the results of the safety factor are analyzed with the areas of associated critical failure surfaces to provide an interpretation and explanation of the simulation results. This is to have a better understanding of how the model works and to facilitate its implementation in landslide hazard assessment. The Scoops3D physicallybased model can be a very useful tool for mass movement risk management projects.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"17 1","pages":"71-96"},"PeriodicalIF":0.0,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47530425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Álgebra óptima y soluciones invariantes para la ecuación de Chazy 查齐方程的最优代数和不变解
Ingenieria y Ciencia Pub Date : 2021-05-12 DOI: 10.17230/INGCIENCIA.17.33.1
G. Loaiza, Y. Acevedo-Agudelo, Oscar Londoño-Duque
{"title":"Álgebra óptima y soluciones invariantes para la ecuación de Chazy","authors":"G. Loaiza, Y. Acevedo-Agudelo, Oscar Londoño-Duque","doi":"10.17230/INGCIENCIA.17.33.1","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.17.33.1","url":null,"abstract":"Se caracterizan las soluciones invariantes para la ecuación de Chazy a partir de los operadores generadores del álgebra óptima, la cual fue obtenida mediante el grupo de simetrías de Lie correspondiente a dicha ecuación.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"17 1","pages":"7-21"},"PeriodicalIF":0.0,"publicationDate":"2021-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45174558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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