发布求助
文献互助 智能选刊 最新文献

TecnoLogicas最新文献

筛选
英文 中文
Cálculo del umbral para detección de la onda R del complejo cardiaco 心脏复合体R波检测阈值的计算
TecnoLogicas Pub Date : 2014-01-15 DOI: 10.22430/22565337.198
Javier E. González-Barajas
{"title":"Cálculo del umbral para detección de la onda R del complejo cardiaco","authors":"Javier E. González-Barajas","doi":"10.22430/22565337.198","DOIUrl":"https://doi.org/10.22430/22565337.198","url":null,"abstract":"The electrocardiographic signal is an electrical signal and its amplitude is 1 mV approximately and spectral components between 0.7 and 100 Hz. The electrocardiographic signal represents the electrical behavior of the human heart and it has a group of waves called the cardiac complex. Waves comprising the cardiac complex are: P, Q, R, S and T. The R-wave corresponds to the positive wave of greater amplitude of the electrocardiographic signal and the time between each wave allows the calculation of instantaneous heart rate. The calculation of the time between R wave requires implementation of a filtering system that allows an attenuation of the spectral components that do not belong to this waveform. Then proceed to a thresholding process that consists of generating a binary signal which takes the value of one in the sample that records the wave R and zero in the other samples. The principal goal of this paper is to present the results to implement an algorithm for setting the threshold based on the calculation of the histogram of the electrocardiographic signal that has been previously addressed through a system based on filter banks.","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"17 1","pages":"47-55"},"PeriodicalIF":0.0,"publicationDate":"2014-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68484887","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: 7
Tendencias en las series de precipitación en dos cuencas torrenciales andinas del Valle del Cauca (Colombia) 哥伦比亚考卡山谷两个安第斯急流流域降水序列的趋势
TecnoLogicas Pub Date : 2014-01-15 DOI: 10.22430/22565337.208
Faisury Cardona-Guerrero, Álvaro J. Ávila-Díaz, Y. Carvajal-Escobar, Henry Jiménez-Escobar
{"title":"Tendencias en las series de precipitación en dos cuencas torrenciales andinas del Valle del Cauca (Colombia)","authors":"Faisury Cardona-Guerrero, Álvaro J. Ávila-Díaz, Y. Carvajal-Escobar, Henry Jiménez-Escobar","doi":"10.22430/22565337.208","DOIUrl":"https://doi.org/10.22430/22565337.208","url":null,"abstract":"With the goal of detecting changes or trends in registered data of daily rainfall in the basins of rivers Dagua and Cali, located in the south-west of Colombia, in the Valle del Cauca, nine climate extremes indices were calculated using the RClimDex software. For this, precipitation trends were analyzed in 18 rain gauges located in the study area with historical series ranging between 21 and 56 years. Homogeneity tests were made to data to ensure consistency in the information. The results show changes in rainfall, dominated by the increasing trends for almost all indices; however most of the trends do not show high statistical significance. Also, a significant increase in the average annual total rainfall of 15.2 mm (Dagua river basin) and 9.1 mm (Cali river basin) in the stations located below 1500 msnm was obtained. Moreover, in the stations located at higher elevations, decreases were observed. There is a homogeneous spatial distribution for the most of the indices and similar patterns were found located in defined areas of the study zone, which may affect the runoff production in watersheds in the coming years.","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"53 1","pages":"85-95"},"PeriodicalIF":0.0,"publicationDate":"2014-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68486021","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: 14
Algoritmo para un Patrón de Radiación Sin Lóbulos Secundarios 无二次瓣辐射模式的算法
TecnoLogicas Pub Date : 2013-11-19 DOI: 10.22430/22565337.320
Oscar Cruz-Zamora, M. A. Acevedo-Mosqueda
{"title":"Algoritmo para un Patrón de Radiación Sin Lóbulos Secundarios","authors":"Oscar Cruz-Zamora, M. A. Acevedo-Mosqueda","doi":"10.22430/22565337.320","DOIUrl":"https://doi.org/10.22430/22565337.320","url":null,"abstract":"Resumen es: En este trabajo se describe el procedimiento, basado en sistema de ecuaciones de nulos direccionados para calcular los pesos necesario de un arreglo de a...","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"1 1","pages":"367-380"},"PeriodicalIF":0.0,"publicationDate":"2013-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68490440","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
Generación y Análisis de Algoritmos para el Estudio de QBDs 为QBDs研究生成和分析算法
TecnoLogicas Pub Date : 2013-11-19 DOI: 10.22430/22565337.346
Ricardo Gómez-Vargas, Mónica Espinosa-Buitrago
{"title":"Generación y Análisis de Algoritmos para el Estudio de QBDs","authors":"Ricardo Gómez-Vargas, Mónica Espinosa-Buitrago","doi":"10.22430/22565337.346","DOIUrl":"https://doi.org/10.22430/22565337.346","url":null,"abstract":"Resumen es: El analisis y caracterizacion de sistemas de telecomunicaciones gene-ralmente se realiza utilizando modelos estocasticos, en este articulo se presentan d...","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"1 1","pages":"577-589"},"PeriodicalIF":0.0,"publicationDate":"2013-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68491177","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
Evolución de la Intensidad de Pixeles para Describir la Deformación de Películas Plásticas 描述塑料薄膜变形的像素强度的演变
TecnoLogicas Pub Date : 2013-11-19 DOI: 10.22430/22565337.397
J. León, Alejandro Restrepo-Martínez, F. López-Giraldo
{"title":"Evolución de la Intensidad de Pixeles para Describir la Deformación de Películas Plásticas","authors":"J. León, Alejandro Restrepo-Martínez, F. López-Giraldo","doi":"10.22430/22565337.397","DOIUrl":"https://doi.org/10.22430/22565337.397","url":null,"abstract":"Resumen es: Este trabajo propone una metodologia para la descripcion de compor-tamientos mecanicos en la deformacion de una pelicula plastica termode-formable utiliz...","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"1 1","pages":"695-707"},"PeriodicalIF":0.0,"publicationDate":"2013-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68491968","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
Compensación de Dispersión Cromática Usando Fibras de Cristal Fotónico con Distribución Hexagonal 使用六边形分布光子晶体光纤的色散补偿
TecnoLogicas Pub Date : 2013-11-19 DOI: 10.22430/22565337.325
E. Reyes-Vera, N. Gómez-Cardona
{"title":"Compensación de Dispersión Cromática Usando Fibras de Cristal Fotónico con Distribución Hexagonal","authors":"E. Reyes-Vera, N. Gómez-Cardona","doi":"10.22430/22565337.325","DOIUrl":"https://doi.org/10.22430/22565337.325","url":null,"abstract":"In this paper we show various configurations of photonic crystal fiber with hexagonal holes distribution for compensation of chromatic dispersion in optical communications links. The vectorial finite element method with scattering boundary condition was used for the analysis of the fibers. From these results it was estimated variation of the dispersion and the dispersion slope with respect to change in the diameter of the holes in the microstructure. With the above was possible to obtain values of dispersion in the C and L bands of telecommunications close to -850 ps / nm * km, with confinement losses 10-3 dB / km","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"1 1","pages":"543-553"},"PeriodicalIF":0.0,"publicationDate":"2013-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68490683","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
Sistema de Rehabilitación basado en el Uso de Análisis Biomecánico y Videojuegos mediante el Sensor Kinect 基于生物力学分析和Kinect传感器视频游戏的康复系统
TecnoLogicas Pub Date : 2013-11-19 DOI: 10.22430/22565337.386
John E. Muñoz-Cardona, Óscar A. Henao-Gallo, J. F. López-Herrera
{"title":"Sistema de Rehabilitación basado en el Uso de Análisis Biomecánico y Videojuegos mediante el Sensor Kinect","authors":"John E. Muñoz-Cardona, Óscar A. Henao-Gallo, J. F. López-Herrera","doi":"10.22430/22565337.386","DOIUrl":"https://doi.org/10.22430/22565337.386","url":null,"abstract":"Resumen es: El presente articulo muestra la creacion de un novedoso sistema para la rehabilitacion fisica de pacientes con multiples patologias, a traves de dinamica...","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"1 1","pages":"43-54"},"PeriodicalIF":0.0,"publicationDate":"2013-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68492398","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: 19
Diseño de Controlador Robusto para Horno Rotatorio 稳健的回转窑控制器设计
TecnoLogicas Pub Date : 2013-11-19 DOI: 10.22430/22565337.334
Omar D. Hernández-Arboleda, Paula A. Ortiz-Valencia, J. A. Herrera-Cuartas
{"title":"Diseño de Controlador Robusto para Horno Rotatorio","authors":"Omar D. Hernández-Arboleda, Paula A. Ortiz-Valencia, J. A. Herrera-Cuartas","doi":"10.22430/22565337.334","DOIUrl":"https://doi.org/10.22430/22565337.334","url":null,"abstract":"Resumen es: En este articulo se presenta el diseno de un controlador robusto para un horno rotativo. El controlador disenado es una combinacion de un PID fraccionari...","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"1 1","pages":"263-276"},"PeriodicalIF":0.0,"publicationDate":"2013-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68490524","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
Predicción de Energía en Sistemas Fotovoltaicos Urbanos 城市光伏系统的能源预测
TecnoLogicas Pub Date : 2013-11-19 DOI: 10.22430/22565337.370
Carlos Andrés Ramos-Paja, Adriana Trejos-Grajales, Bonie J. Restrepo-Cuestas
{"title":"Predicción de Energía en Sistemas Fotovoltaicos Urbanos","authors":"Carlos Andrés Ramos-Paja, Adriana Trejos-Grajales, Bonie J. Restrepo-Cuestas","doi":"10.22430/22565337.370","DOIUrl":"https://doi.org/10.22430/22565337.370","url":null,"abstract":"This paper proposes a new method to accurately estimate the power and energy production in urban photovoltaic (PV) systems, which are commonly covered by shades affecting its performance. The solution is based on an efficient algorithm designed to compute, in short time, an accurate model accounting for the shades impact. In such a way, the proposed approach improves classical solutions by significantly reducing the processing time to simulate long periods, e.g. months and years, but without introducing sensible errors. Therefore, this approach is suitable to estimate the production of PV systems for economical analyses such as the return-of-invested time calculation, but also to accurately design PV installations by selecting the right number of photovoltaic modules to supply the required load power.","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"1 1","pages":"81-93"},"PeriodicalIF":0.0,"publicationDate":"2013-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68491809","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
Recomendaciones para Seleccionar Índices para la Validación de Modelos 为模型验证选择指标的建议
TecnoLogicas Pub Date : 2013-11-19 DOI: 10.22430/22565337.372
J. Camarillo-Peñaranda, A. Saavedra-Montes, C. Ramos-Paja
{"title":"Recomendaciones para Seleccionar Índices para la Validación de Modelos","authors":"J. Camarillo-Peñaranda, A. Saavedra-Montes, C. Ramos-Paja","doi":"10.22430/22565337.372","DOIUrl":"https://doi.org/10.22430/22565337.372","url":null,"abstract":"A set of recommendations to select error indices to model validation is presented in this paper. The recommendations are based on the comparison of indices used to validate dynamic systems. Nine error indices and one fit index are presented and mathematically defined. Based on the data reported in literature to validate models, step function and sine function are selected, as patron signals, to evaluate the index results. As a relevant contribution of this paper, recommendations to select and interpret error indices during the validation of physical system models are given.","PeriodicalId":30469,"journal":{"name":"TecnoLogicas","volume":"1 1","pages":"109-122"},"PeriodicalIF":0.0,"publicationDate":"2013-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68492274","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: 3
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信