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Mostrando ítems 11-20 de 61
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Towards a Practical Argumentative Reasoning with Qualitative Spatial Databases
(Springer, 2003)
Classical database management can be flawed if the Knowledge database is built within a complex Knowledge Domain. We must then deal withinconsistencies and, in general, withanomalies of several types. In this paper we ...
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Normal-mode linear analysis and initial conditions of capillary jets
(Cambridge University Press, 2008-04-25)
The normal-mode linear analysis of an axisymmetric infinite capillary jet is generalized to account for arbitrary initial conditions. An exhaustive study of the dispersion relation reveals the parametric behaviour of all ...
Artículo
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N doping of TiO 2(110) Photoemission and density-functional studies
(AIP Publishing, 2006-09)
The electronic properties of N-doped rutile TiO2(110) have been investigated using synchrotron-based photoemission and density-functional calculations. The doping via N+2 ion bombardment leads to the implantation of N atoms ...
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Existence and uniqueness of positive solution of a logistic equation with nonlinear gradient term
(Cambridge University Press, 2007-06)
The main goal of this work is to study the existence and uniqueness of positive solution of a logistic equation including a nonlinear gradient term. In particular, we use local and global bifurcation together with some ...
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Bases for Projective modules in An(k)
(2003-12)
Let $A_n(k)$ be the Weyl algebra, with $k$ a field of characteristic zero. It is known that every projective finitely generated left module is free or isomorphic to a left ideal. Let $M$ be a left submodule of a free module. ...
Artículo
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The Efficient Functioning of Photosynthesis and Respiration in Synechocystis sp. PCC 6803 Strictly Requires the Presence of either Cytochrome c6 or Plastocyanin
(Elsevier, 2004)
In cyanobacteria, cytochrome c6 and plastocyanin are able to replace each other as redox carriers in the photosynthetic and respiratory electron transport chains with the synthesis of one or another protein being regulated ...
Ponencia
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A methodology for the computer-aided cleaning of complex knowledge databases
(IEEE Computer Society, 2002)
In environments with complex cognitive structure (such as semantic web or sophisticated spatial databases for geographical information systems), classical methods for detecting anomalies can be inadequate. In this paper ...
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On selections of the metric projection and best proximity pairs in hyperconvex spaces
(Maria Curie-Skłodowska University, 2005)
In this work we present new results on nonexpansive retractions and best proximity pairs in hyperconvex metric spaces. We sharpen the main results of R. Esp´ınola et al. in [3] (Nonexpansive retracts in hyperconvex spaces, ...
Artículo
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Contabilidad y aprensión comunicativa: estudio comparativo de los niveles y perfiles de AC en los estudiantes universitarios
(Asociación Española de Profesores Universitarios de Contabilidad, 2003)
La contabilidad está directamente relacionada con la actividad de comunicar. En esta línea, organizaciones de gran relevancia en el área contable han manifestado opiniones, apoyadas por los resultados de investigaciones, ...
Artículo
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Structure of the Complex between Plastocyanin and Cytochrome f from the Cyanobacterium Nostoc sp. PCC 7119 as Determined by Paramagnetic NMR
(Elsevier, 2005)
The complex between cytochrome f and plastocyanin from the cyanobacterium Nostoc has been characterized by NMR spectroscopy. The binding constant is 16 mm–1, and the lifetime of the complex is much less than 10 ms. ...