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Aproximadamente 154 registro(s) hasta el momento: (journal)

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Recurso libre

Asymptotic representations of the period for the nonlinear oscillator
Beléndez Vázquez, Augusto - Hernández Prados, Antonio - Beléndez Vázquez, Tarsicio - Neipp López, Cristian - Márquez Ruiz, Andrés

Formato:	info:eu-repo/semantics/article
Enlaces:	The asymptotic behaviours for small and large amplitudes, A, of the period for a nonlinear oscillator, where the square of the angular frequency depends quadratically on the velocity, are obtained. These asymptotic expressions are compared with the exact period, T(A),…
Fecha:	2007-10-27
Recurso:	RUA Docencia

Recurso libre

The successful application of natural language processing for information retrieval
Ferrández Rodríguez, Antonio - Rojas Hernández, Yenory - Peral Cortés, Jesús

Formato:	info:eu-repo/semantics/article
Enlaces:	In this paper, a novel model for monolingual Information Retrieval in English and Spanish language is proposed. This model uses Natural Language Processing techniques (a POS-tagger, a Partial Parser, and an Anaphora Resolver) in order to improve the precision of…
Fecha:	2007-10-28
Recurso:	RUA Docencia

Recurso libre

Comments on “investigation of the properties of the period for the nonlinear oscillator x''+(1+x^2)x'=0”
Beléndez Vázquez, Augusto - Beléndez Vázquez, Tarsicio - Hernández Prados, Antonio - Gallego Rico, Sergi - Ortuño Sánchez, Manuel - Neipp López, Cristian

Formato:	info:eu-repo/semantics/article
Enlaces:	Two Lidstedt-Poincaré perturbation based methods are used to solve the nonlinear differential equation of a nonlinear oscillator having the square of the angular frequency depends quadratically on the velocity. Mickens published two interesting papers [1, 2] about this oscillator and…
Fecha:	2007-10-27
Recurso:	RUA Docencia

Recurso libre

Application of the harmonic balance method to a nonlinear oscillator typified by a mass attached to a stretched wire
Beléndez Vázquez, Augusto - Hernández Prados, Antonio - Beléndez Vázquez, Tarsicio - Álvarez López, Mariela Lázara - Gallego Rico, Sergi - Ortuño Sánchez, Manuel - Neipp López, Cristian

Formato:	info:eu-repo/semantics/article
Enlaces:	The first-order harmonic balance method via the first Fourier coefficient is used to construct two approximate frequency–amplitude relations for a conservative nonlinear oscillatory system in which the restoring force has an irrational form. This system corresponds to the motion of…
Fecha:	2007-10-26
Recurso:	RUA Docencia

Recurso libre

Newton additive and multiplicative Schwarz iterative methods
Arnal García, Josep - Migallón Gomis, Violeta - Penadés Martínez, José - Szyld, Daniel B.

Formato:	info:eu-repo/semantics/preprint
Enlaces:	Convergence properties are presented for Newton additive and multiplicative Schwarz (AS and MS) iterative methods for the solution of nonlinear systems in several variables. These methods consist of approximate solutions of the linear Newton step using either AS or MS…
Fecha:	2007-10-03
Recurso:	RUA Docencia

Recurso libre

Computation and visualization of the MacAdam limits for any lightness, hue angle, and light source
Martínez Verdú, Francisco Miguel - Perales Romero, Esther - Chorro Calderón, Elísabet - Fez Saiz, Dolores de - Viqueira Pérez, Valentín - Gilabert Pérez, Eduardo

Formato:	info:eu-repo/semantics/article
Enlaces:	We present a systematic algorithm capable of searching for optimal colors for any lightness L* (between 0 and 100), any illuminant (D65, F2, F7, F11, etc.), and any light source reported by CIE. Color solids are graphed in some color…
Fecha:	2007-07-11
Recurso:	RUA Docencia

Recurso libre

Engendering epidemiology
García García, Ana María - Bartley, Mel - Álvarez-Dardet Díaz, Carlos

Formato:	Other
Enlaces:	Contributions from the Spanish Research Network for Health and Gender
Fecha:	2008-02-15
Recurso:	RUA Docencia

Recurso libre

Refractive analysis of the human cornea through propagated fields
Illueca Contri, Carlos - Mas Candela, David - Pérez Rodríguez, Jorge - Pons Moreno, Álvaro Máximo - Artigas Verde, José María

Formato:	info:eu-repo/semantics/article
Enlaces:	A new technique for analysing the optical quality of the human cornea is presented. Corneal maps are obtained through keratographies and then converted into phase maps. The propagated fields generated from this surface are plotted and studied. It is shown…
Fecha:	2007-10-16
Recurso:	RUA Docencia

Recurso libre

Fresnel diffraction in a theoretical eye: a fractional Fourier transform approach
Pons Moreno, Álvaro Máximo - Lorente Velázquez, Amalia - Illueca Contri, Carlos - Mas Candela, David - Artigas Verde, José María

Formato:	info:eu-repo/semantics/article
Enlaces:	In this work, we have applied the fractional Fourier transform to obtain the Fresnel diffraction patterns in a theoretical eye. The FRT approach to Fresnel diffraction is easily implemented in a Gullstrand-Emsley theoretical eye, and it allows us to obtain…
Fecha:	2007-10-16
Recurso:	RUA Docencia

Recurso libre

10.

Environmental strategies and their impact on hotel performance
Claver Cortés, Enrique - Molina Azorín, José Francisco - Pereira Moliner, Jorge - López Gamero, María Dolores

Formato:	info:eu-repo/semantics/article
Enlaces:	This study examines the relevance of environmental management as a source of competitive advantage for hotels. The relationship between the environmental proactivity of hotels located in the province of Alicante (Spain) and their economic performance levels was studied, and three…
Fecha:	2009-11-19
Recurso:	RUA Docencia