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Elsevier |
Documentos disponibles de esta editorial (2214)
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The useful mutual information statistic is considered and its asymptotic properties are investigated either considering random sampling or stratified random sampling. Under different assumptions, it is shown that the asymptotic distribution of t[...]![]()
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We prove the existence of a finite extinction time for the solutions of the Dirichlet problem for the total variation flow. For the Neumann problem, we prove that the solutions reach the average of its initial datum in finite time. The asymptoti[...]![]()
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Given a Hamiltonian system on a fiber bundle, the Poisson covariant formulation of the Hamilton equations is described. When the fiber bundle is a G-principal bundle and the Hamiltonian density is G-invariant, the reduction of this formulation i[...]![]()
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The authors study the limit case L1,q of the Lorentz- space approximation number ideals Lp,q. It is shown, using a suitable bilinear interpolation theorem that the ideals L1,q are tensor-stable. Moreover a telescoping sum representation theorem [...]![]()
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We study the approximate controllability property for y(t) - Delta phi(y) = u chi(omega), on Omega x (0, T), where Omega is a bounded open set of R-N and omega subset of Omega. First, we show some negative results for the case phi(s) = \s\(m-1)s[...]![]()
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This paper explores the relationship between productivity and sourcing strategies using a sample of Spanish manufacturing firms. In this analysis we use different measures of productivity and alternative ways of grouping firms. Our results indic[...]![]()
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Rodríguez Bouza, Marta ; Paparini, Claudia ; Otero, Xurso ; Herraiz, M. ; Radicella, S. M. ; Abe, Oladipo E. ; Rodríguez Caderot, Gracia | Elsevier | 2017Global or regional Maps of the ionospheric Total Electron Content (TEC) are an efficient tool to monitor the delay introduced by the ionosphere in the satellite signals. Ionospheric disturbance periods are of particular interest because these co[...]![]()
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This study attempts to identify and trace inter-linkages between sovereign and banking risk for each main country in the euro area. To this end, we use an indicator of banking sector risk in each country based on the Contingent Claim Analysis li[...]![]()
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Since the beginnings of the 1980s some energy methods have been introduced as an alternative to comparison principles in order to prove space and time localization of solutions of suitable nonlinear parabolic or elliptic equations. The study of [...]![]()
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A degenerate parabolic system consisting in two continuity equations for densities of charged particles and in the Poisson equation for an electric potential is considered. We show the finite speed of propagation, a waiting time property for the[...]![]()
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Hernández, Francisco L. ; Ruiz Bermejo, César ; Sánchez de los Reyes, Víctor Manuel | Elsevier | 2015-11Let I1 and I2 be arbitrary operator ideals in the sense of Pietsch and E and F be Banach spaces such that the set I1(E,F){set minus}I2(E,F) is non-empty. We give a quite general sufficient condition on the Banach spaces in order to obtain the sp[...]![]()
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Let (X, ?) be a Riemann domain over a complex Fréchet space E, K a compact subset of X and (K) the vector space of all holomorphic germs on K. Given an F-quotient (XF, ?F, ?) of (X, ?) (see the definition below), the canonical mapping ? : X ? X[...]![]()
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Sánchez Guijo, Fermín ; García Olmo, Damián ; Prósper, Felipe ; Martínez, Salvador ; Zapata González, Agustín ; Fernández Avilés, Francisco ; Toledo Aral, Juan José ; Torres, Miguel ; Fariñas, Isabel ; Badimón, Lina ; Labandeira García, José Luis ; García Sancho, Javier ; Moraleda, Jose María | Elsevier | 2019-12-19In the current article we summarize the 15-year experience of the Spanish Cell Therapy Network (TerCel), a successful collaborative public initiative funded by the Spanish government for the support of nationwide translational research in this i[...]![]()
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Cordero, I. ; Jiménez Escobar, María Dolores ; Delgado Sáez, Juan Antonio ; Villegas, L. ; Balaguer Núñez, Luis | Elsevier | 2016-10-01Tropical dry forests are highly endangered ecosystems that have been scarcely studied. Many species within these forests suffer regeneration problems due to unsustainable management regimes. In particular, a regeneration problem has been detecte[...]![]()
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Castillo-Neyra, Ricardo ; Zegarra, Edith ; Monroy, Ynes ; Bernedo, Reyno F. ; Cornejo-Rosello, Ismael ; Paz-Soldan, Valerie A. ; Levy, Michael Z. | Elsevier | 2019-01-25T16:03:20ZIn the city of Arequipa, Peru, a rabid dog was detected in March 2015, marking the reintroduction of the rabies virus in the area; more rabid dogs have been detected since then. The presence of free-roaming dogs in Arequipa seems to be higher in[...]![]()
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Makarov, Valeri A. ; Nekorkin, Vladimir I. ; Kazantsev, V.B. ; Velarde, Manuel G. | Elsevier | 1997-02-01The spatio-temporal dynamics of discrete lattices of coupled bistable elements is considered. It is shown that both regular and chaotic spatial field distributions can be realized depending on parameter values and initial conditions. For illustr[...]![]()
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Ruiz-Grosso, Paulo ; Miranda, J. Jaime ; Gilman, Robert H. ; Walker, Blake Byron ; Carrasco-Escobar, Gabriel ; Varela-Gaona, Marco ; Diez-Canseco, Francisco ; Huicho, Luis ; Checkley, William ; Bernabé-Ortiz, Antonio | Elsevier | 2019-02-06T14:52:12ZPURPOSE: To map the geographical distribution and spatial clustering of depressive symptoms cases in an area of Lima, Peru. METHODS: Presence of depressive symptoms suggesting a major depressive episode was assessed using a short version of the [...]![]()
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Environmentally friendly measures are needed to achieve natural pest control. A relationship between landscape structure and Bactrocera oleae, the main olive grove pest, indicated a general association between complex landscapes and reduced abun[...]![]()
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Esteban Fernández, Diego ; Gómez Gómez, M.Milagros ; Cañas, Benito ; Verdaguer, J.M. ; Ramírez, R. ; Palacios Corvillo, M.Antonia | Elsevier | 2007Chemical compounds containing platinum have been employed since 1978 as drugs to beat certain type of tumours. Nevertheless, besides of their exceptional antitumoral properties, these drugs also have important deleterious side effects, such as, [...]![]()
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Peltomaa, Riikka ; Vaghini, Silvia ; Patiño Álvarez, Belén ; Benito-Peña, Elena ; Moreno-Bondi, María C. | Elsevier | 2016-09Plant-pathogenic Fusarium species, Fusarium verticillioides and Fusarium proliferatum, are the major producers of fumonisins which are one of the most common mycotoxins found in maize. Herein, we report the development of specific and sensitive [...]![]()
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Vicente Sánchez, Javier ; Alonso Conde, Rafael Alejandro ; Navascués, Eva ; Marquina Díaz, Domingo ; Santos de la Sen, Antonio | Elsevier | 2020-03-11Grapevine trunk diseases, caused by different fungal pathogens, are the most relevant group of diseases that affect vineyards, causing important economic losses. Quality control for sanitary purposes should be applied for different diseases in e[...]![]()
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Muñoz Martín, Alfonso ; De Vicente Muñoz, Gerardo ; Fernández Lozano, Javier ; Cloetingh, Sierd ; Willingshofer, Ernst ; Sokoutis, Dimitrios ; Beekman, Fred | Elsevier | 2010-09-22Large-scale folding is a key mechanism of lithospheric deformation and has been described in many parts of the Earth, both for the continental and oceanic lithospheres. Some aspects of this process such as the presence of coupling/decoupling bet[...]![]()
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Mayorga Pinilla, Santiago ; Vázquez Moliní, Daniel ; Álvarez Fernández-Balbuena, Antonio ; Muro, Carmen ; Muñóz, Javier | Elsevier | 2016-06A spectral aging test was developed to estimate the photochemical damage of oil, acrylic and gouache paints exposed to permanent lighting. The paints were irradiated at seven different wavelengths in the optical range to control and evaluate the[...]![]()
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The primitive variable formulation of the unsteady incompressible Navier-Stokes equations in three space dimensions is discretized with a combined Fourier-Legendre spectral method. A semi-implicit pressure correction scheme is applied to decoupl[...]![]()
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We study theoretically the level shift of the Dirac oscillator perturbed by any sharply peaked potential approaching a surface delta potential. A Green function method is used to obtain closed expressions for all partial waves and parities.