1,811 research outputs found
Neural model with particle swarm optimization Kalman learning for forecasting in smart grids
No full textThis paper discusses a novel training algorithm for a neural network architecture applied to time series prediction with smart grids applications. The proposed training algorithm is based on an extended Kalman filter (EKF) improved using particle swarm optimization (PSO) to compute the design parameters. The EKF-PSO-based algorithm is employed to update the synaptic weights of the neural network. The size of the regression vector is determined by means of the Cao methodology. The proposed structure captures more efficiently the complex nature of the wind speed, energy generation, and electrical load demand time series that are constantly monitorated in a smart grid benchmark. The proposed model is trained and tested using real data values in order to show the applicability of the proposed scheme. © 2013 Alma Y. Alanis et al
A wind speed neural model with particle swarm optimization Kalman learning
No full textThis paper deals with a novel training algorithm for a neural network architecture for wind speed time series prediction. The proposed training algorithm is based in an extended Kalman filter (EKF) improved using particle swarm optimization (PSO) to compute the design parameters The EKF-PSO based algorithm is employed to update the synaptic weights of the neural network. The size of the regression vector is determined by means of the Cao methodology. The proposed structure captures more efficiently the complex nature of the wind speed time series. The proposed model is trained and tested using real wind speed data values. In order to show the applicability of the proposed scheme Simulation results are included. © 2012 TSI Press
Real-time Discrete Nonlinear Identification via Recurrent High Order Neural Networks
No full textEste artículo trata el problema de identificación de sistemas no lineales discretos usando redes neuronales recurrentes de alto orden entrenadas con un algoritmo basado en el filtro de Kalman extendido (EKF). El artículo también incluye el análisis de estabilidad para el sistema completo, en las bases de la técnica de Lyapunov. La aplicabilidad del esquema se ilustra a través de la implementación en tiempo real para un motor de inducción trifísico
Real-time Discrete Nonlinear Identification via Recurrent High Order Neural Networks
No full textEste artículo trata el problema de identificación de sistemas no lineales discretos usando redes neuronales recurrentes de alto orden entrenadas con un algoritmo basado en el filtro de Kalman extendido (EKF). El artículo también incluye el análisis de estabilidad para el sistema completo, en las bases de la técnica de Lyapunov. La aplicabilidad del esquema se ilustra a través de la implementación en tiempo real para un motor de inducción trifásico
Neural modeling of the blood glucose level for type 1 diabetes mellitus patients
No full textThis paper discusses a novel training algorithm for a neural network architecture applied to time series prediction with smart grids applications. The proposed training algorithm is based on an extended Kalman filter (EKF) improved using particle swarm optimization (PSO) to compute the design parameters. The EKF-PSO-based algorithm is employed to update the synaptic weights of the neural network. The size of the regression vector is determined by means of the Cao methodology. The proposed structure captures more efficiently the complex nature of the wind speed, energy generation, and electrical load demand time series that are constantly monitorated in a smart grid benchmark. The proposed model is trained and tested using real data values in order to show the applicability of the proposed scheme. " 2013 Alma Y. Alanis et al.",,,,,,"10.1155/2013/197690",,,"http://hdl.handle.net/20.500.12104/43068","http://www.scopus.com/inward/record.url?eid=2-s2.0-84879290075&partnerID=40&md5=cc3ccfb7130389dad494823eb1611e09",,,,,,,,"Mathematical Problems in Engineering",,,,"2013",,"Scopu
Inverse optimal control with speed gradient for a power electric system using a neural reduced model
No full textThis paper presented an inverse optimal neural controller with speed gradient (SG) for discrete-time unknown nonlinear systems in the presence of external disturbances and parameter uncertainties, for a power electric system with different types of faults in the transmission lines including load variations. It is based on a discrete-time recurrent high order neural network (RHONN) trained with an extended Kalman filter (EKF) based algorithm. It is well known that electric power grids are considered as complex systems due to their interconections and number of state variables; then, in this paper, a reduced neural model for synchronous machine is proposed for the stabilization of nine bus system in the presence of a fault in three different cases in the lines of transmission. � 2014 Alma Y. Alanis et al
Three Manifestations of Literary Identity in the «Diálogo de la alegría del alma contra el temor de la muerte» (Cuenca, 1612): Author, Editor, and Dedicateee
No full textTrabajo realizado en el marco del proyecto FFI2015-63703-P (MINECO/FEDER), «Dialogyca: Transmisión textual y hermenéutica del diálogo hispánico (DIALOMYR)», Ana Vian Herrero (IP1) y María Mercedes Fernández Valladares (IP2), Instituto Universitario Seminario Menéndez Pidal (Universidad Complutense de Madrid).RESUMEN: No se puede afirmar que el único responsable de un texto literario sea su autor. A menudo intervienen muy diversos agentes y condicionantes que determinan el resultado final de una obra. A conocer esa conjunción de factores y voluntades que pueden configurar la identidad literaria se ha dedicado este trabajo. En concreto, se analizan las particularidades del autor, el editor y el dedicatario como elementos significativos en el «Diálogo de la alegría del alma contra el temor de la muerte» (Cuenca, 1612).ABSTRACT: It is not possible to affirm that only the author is behind a fictional text. Usually, a lot of agents and determining factors have an important influence in the literary product. This work focuses on the knowing of that union of factors and wishes that could configure the literary identity. Specifically, the particularities of the author, publisher and the person to whom is dedicated the book are analyzed as significant elements in the «Diálogo de la alegría del alma contra el temor de la muerte» (Cuenca, 1612).Ministerio de Economía y Competitividad (España)European CommissionDepto. de Literaturas Hispánicas y BibliografíaFac. de FilologíaInstituto Universitario Menéndez PidalTRUEpu
Empresa y familia en la minería del Guanajuato decimonónico. Antropología. Boletín Oficial del Instituto Nacional de Antropología e Historia: Empresas y empresarios. Num. 72 Nueva Época (2003) octubre-diciembre
No full textAlegato de buena prueba presentado en el negocio sobre rescisión de la venta de una barra de la mina de La luz que piden Don Luis y Doña Concepción Otero contra la testamentaría del Señor Juan de Dios Pérez Gálvez, hecho por el licenciado Hilario Elguero, México, Imprenta de José María Lara, 1852.Archivo Histórico de Guanajuato. Protocolo Cabildo, 19 de agosto de 1793.Archivo Histórico de Guanajuato. Protocolo Cabildo 1829.Archivo Histórico de Guanajuato. Ramo Minería, tomo IV, 1827-1832.Brading, David; Mineros y comerciantes en el México Borbónico (1763-1810), México, FCE, 1975, pp. 378-79.Fondo Rul y Azcárate. Archivo General de la Nación, en adelante (FRA), Escrituras, 1805-34.FRA, Contabilidad 1844-1916.FRA, Contabilidad 1867-1904.FRA, Contabilidad y escrituras 1823-1832.FRA, Escrituras 1824-1860.FRA, Escrituras 1832-1863.FRA, Escrituras 1834-1908.FRA, Escrituras 1851-1899.FRA, Escrituras 1884-1892.FRA, Escrituras y comprobantes 1832-1846.FRA, Escrituras y comprobantes 1844-1890.FRA, Escrituras y contabilidad 1832-1846.FRA, Escrituras y contabilidad 1832-1870.FRA, Escrituras y contabilidad 1838-1893.FRA, Escrituras e Informes 1844-1881.FRA, Litigios 1718-1872.Garner, Richard L.; “Silver production and entrepreneurial structure in 18th Century México”, en Jarbuch für Geschichte von Staat Wirtschaft und Gesellschaft Lateinamericas, vol. 17, Berlín, 1988, pp. 157-186.Herrera Canales, Inés y Rina Ortiz Peralta, “La minería en Hidalgo. De la Colonia al siglo XX”, en Recuento histórico bibliográfico de la minería en la región central de México, Morelia, Universidad Michoacana de San Nicolás de Hidalgo, 1994, pp. 30-36.Ladd, Doris; La nobleza mexicana en la época de la Independencia, 1780-1826, México, FCE, 1984.Macías, Carlos; “El retorno a la Valenciana, las familias Pérez Gálvez y Rul”, en Historia Mexicana, XXXVI, 4, 1987.Parra, Alma; “Perfiles empresariales extranjeros en la minería mexicana”, en Vetas, año III, núm. 7, enero-abril, 2001.———; “La presencia inglesa en México”, en Historias, núm. 33, octubre 1994-marzo 1995.Tella, Torcuato S. de; Política nacional y popular en México, 1820-1847, México, FCE, 1994.Velasco, Cuauhtémoc, Eduardo Flores Clair, Alma Laura Parra y Edgar O. Gutiérrez, Estado y minería en México, 1767-1910, México, FCE, 1988, pp. 203-217
El Tlacuache Núm. 349 (2009). 349 Año 9 (2009) febrero. El Tlacuache
No full textEl fútbol mexicano: sonoridad y cultura por Luis Adrián Calderón Gutiérrez. - PROGALLI INSECTO (grana-cochinilla) por Alma Graciela de la Cruz Sánchez
ALMA imaging of the nascent planetary nebula IRAS 15103-5754
No full textWe present continuum and molecular-line (CO, C18O, HCO+) observations carried out with the Atacama Large Millimeter/submillimeter Array toward the 'water fountain' star IRAS 15103-5754, an object that could be the youngest planetary nebula (PN) known. We detect two continuum sources, separated by 0.39 ±0.03 arcsec. The emission from the brighter source seems to arise mainly from ionized gas, thus confirming the PN nature of the object. The molecular-line emission is dominated by a circumstellar torus with a diameter of ~0.6 arcsec (2000 au) and expanding at ~23 km s -1 . We see at least two gas outflows. The highestvelocity outflow (deprojected velocities up to 250 km s -1 ), traced by the CO lines, shows a biconical morphology, whose axis is misaligned ~14° with respect to the symmetry axis of the torus, and with a different central velocity (by ~8 km s -1 ). An additional high-density outflow (traced by HCO+) is oriented nearly perpendicular to the torus. We speculate that IRAS 15103-5754 was a triple stellar system that went through a common envelope phase, and one of the components was ejected in this process. A subsequent low-collimation wind from the remaining binary stripped out gas from the torus, creating the conical outflow. The high velocity of the outflow suggests that the momentum transfer from the wind is extremely efficient, or that we are witnessing a very energetic mass-loss event. © 2018 The Author(s).JFG and LFM are supported by Ministerio de Economia, Industria y Competitividad (MINECO, Spain) grants AYA2014-57369-C3-3 and AYA2017-84390-C2-1-R (co-funded by FEDER). JFG also acknowledges the support of Ministerio de Educacion, Cultura y Deporte (Spain), under the mobility programme for senior scientists at foreign universities and research centres, as well as the hospitality of Universite Cote d'Azur/Laboratoire Lagrange during the preparation of this paper. JRR is supported by grant ESP2015-65597-C4-1-R (MINECO/FEDER). LU acknowledges support from the University of Guanajuato (Mexico) grant ID CIIC 17/2018, and from PRODEP (Mexico). This paper makes use of the following ALMA data: ADS/JAO.ALMA#2015.1.00777.S. ALMA is a partnership of the European Southern Observatory (ESO; representing its member states), the National Science Foundation (USA) and the National Institutes of Natural Sciences (Japan), together with the National Research Council (Canada), the National Science Council and the Academia Sinica Institute of Astronomy and Astrophysics (Taiwan) and the Korea Astronomy and Space Science Institute (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by the ESO, the Associated Universities, Inc./National Radio Astronomy Observatory and the National Astronomical Observatory of Japan.Peer Reviewe
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