Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Rubén Rojas"'
Publikováno v:
BMC Oral Health, Vol 19, Iss 1, Pp 1-11 (2019)
Abstract Background Evidence of the cost-effectiveness of school-based first permanent molar sealants programs is not yet fully conclusive. The aim of this study was to determine the incremental cost-utility ratio (ICUR) of school-based prevention pr
Externí odkaz:
https://doaj.org/article/abe12d899e5546508be15555e80961ac
Publikováno v:
PLoS ONE, Vol 16, Iss 9, p e0256680 (2021)
BackgroundChronic Kidney Disease (CKD) is a leading public health problem, with substantial burden and economic implications for healthcare systems, mainly due to renal replacement treatment (RRT) for end-stage kidney disease (ESKD). The aim of this
Externí odkaz:
https://doaj.org/article/e36ce644e45341089314c01d0d4d1aef
Autor:
Constanza Vargas, Norberto Bilbeny, Carlos Balmaceda, María Francisca Rodríguez, Pedro Zitko, Rubén Rojas, María Eliana Eberhard, Marisol Ahumada, Manuel Antonio Espinoza
Publikováno v:
PAIN Reports, Vol 3, Iss 5, p e656 (2018)
Abstract. Background:. Chronic pain is a prevalent and distressing condition caused by an unceasing pain lasting more than 3 months or a pain that persists beyond the normal healing time. There is evidence of inadequate management partly explained by
Externí odkaz:
https://doaj.org/article/736237f986c74eb8b0a3710d63434f50
Autor:
Betsy Sánchez, Rubén Rojas
Publikováno v:
Revista Técnica de la Facultad de Ingeniería, Vol 28, Iss 1, Pp 59-67 (2005)
Las estructuras de transición robusta aplicada originalmente al control de procesos con diferentes regímenes de operación, se plantean como alternativa para la detección y el diagnóstico de fallas. Una de las ventajas de este método es la reduc
Externí odkaz:
https://doaj.org/article/ff6ed7bddc124807a11bc0e3a55d677c
Publikováno v:
Revista Técnica de la Facultad de Ingeniería, Vol 26, Iss 3, Pp 173-181 (2003)
Este trabajo presenta el desarrollo de un método para el análisis de robustez de un controlador basado en el establecimiento de regiones de estabilidad. Un conjunto de datos es obtenido mediante simulaciones, para un amplio rango de variación en l
Externí odkaz:
https://doaj.org/article/43adf029f7ce48b5855843540caa9f00
Publikováno v:
Revista Técnica de la Facultad de Ingeniería, Vol 25, Iss 1, Pp 3-11 (2002)
This paper presents the development of a Passivity-Based Controller (PBCr) from a First-Order-Plus-Dead-Time model of the process. This approach results in a fixed structure controller that depends on the characteristic parameters of the model. This
Externí odkaz:
https://doaj.org/article/c33b0ca2cb114613bc95b3ca4126953f
Autor:
Rubén Rojas Yedra
Publikováno v:
Castilla: Estudios de Literatura, Iss 5 (2014)
El paseo de Buster Keaton, de Federico García Lorca, es una pieza dramática breve y experimental pero dotada de una fértil simbología. Forma parte del denominado “teatro imposible” de su autor y ha sido considerada por la crítica como una mu
Externí odkaz:
https://doaj.org/article/51900348805f432bb378736e7756c317
Publikováno v:
Revista Técnica de la Facultad de Ingeniería, Vol 25, Iss 1 (2010)
This paper presents the development of a Passivity -Based Controller (PBCr) from a Firsl-OrderPlus-Dead-Time model of the process. This approach results in a fixed structure controller that depends on the characteristic parameters of the model. This
Externí odkaz:
https://doaj.org/article/a46a090209db49088933fee5587dcde7
Autor:
Betsy Sánchez, Rubén Rojas
Publikováno v:
Revista Técnica de la Facultad de Ingeniería, Vol 28, Iss 1 (2010)
The robust transition structures originally applied to control processes with different operation points, is presented as alternative for fault detection and diagnosis. An advantage of this method is the reduction of the mathematical complexity inher
Externí odkaz:
https://doaj.org/article/209f3759153944608d39eb1f344a0714
Publikováno v:
Revista Técnica de la Facultad de Ingeniería, Vol 26, Iss 3 (2010)
This work shows the development of a method to analyze the robustness of a controller based on the establishment of stability regions. Based on computer simulations a data set is obtained for a wide range of modeling parameter variations. On each cas
Externí odkaz:
https://doaj.org/article/ebbe85d1decc496e83c8e9fe615e845d