59 research outputs found
Shallow water equations for large bathymetry variations
In this study, we propose an improved version of the nonlinear shallow water
(or Saint-Venant) equations. This new model is designed to take into account
the effects resulting from the large spacial and/or temporal variations of the
seabed. The model is derived from a variational principle by choosing the
appropriate shallow water ansatz and imposing suitable constraints. Thus, the
derivation procedure does not explicitly involve any small parameter.Comment: 7 pages. Other author's papers can be downloaded at
http://www.lama.univ-savoie.fr/~dutykh
Modified Shallow Water Equations for significantly varying seabeds
In the present study, we propose a modified version of the Nonlinear Shallow
Water Equations (Saint-Venant or NSWE) for irrotational surface waves in the
case when the bottom undergoes some significant variations in space and time.
The model is derived from a variational principle by choosing an appropriate
shallow water ansatz and imposing some constraints. Our derivation procedure
does not explicitly involve any small parameter and is straightforward. The
novel system is a non-dispersive non-hydrostatic extension of the classical
Saint-Venant equations. A key feature of the new model is that, like the
classical NSWE, it is hyperbolic and thus similar numerical methods can be
used. We also propose a finite volume discretisation of the obtained hyperbolic
system. Several test-cases are presented to highlight the added value of the
new model. Some implications to tsunami wave modelling are also discussed.Comment: 34 pages, 18 figures, 65 references. Other author's papers can be
downloaded at http://www.denys-dutykh.com
Exploring the neural correlates of dream phenomenology and altered states of consciousness during sleep
Do people routinely pre-activate the meaning and even the phonological form of upcoming words? The most acclaimed evidence for phonological prediction comes from a 2005 Nature Neuroscience publication by DeLong, Urbach and Kutas, who observed a graded modulation of electrical brain potentials (N400) to nouns and preceding articles by the probability that people use a word to continue the sentence fragment (âclozeâ). In our direct replication study spanning 9 laboratories (N=334), pre-registered replication-analyses and exploratory Bayes factor analyses successfully replicated the noun-results but, crucially, not the article-results. Pre-registered single-trial analyses also yielded a statistically significant effect for the nouns but not the articles. Exploratory Bayesian single-trial analyses showed that the article-effect may be non-zero but is likely far smaller than originally reported and too small to observe without very large sample sizes. Our results do not support the view that readers routinely pre-activate the phonological form of predictable words
Révolutions de Constantinople en 1807 et 1808. Précédées d' observations générales sur l' état actuel de l' empire ottoman.
Preface: Juchereau de Saint Denys, A.deAppendix.Dedication:Pagination: PP24+271P, PP4+318P+1PPVolumes: 2Text Genre:Pros
Le second fascicule du tome II de l'Ethnographie des peuples Ă©trangers Ă la Chine
Hervey de Saint-Denys Léon d'. Le second fascicule du tome II de l'Ethnographie des peuples étrangers à la Chine. In: Comptes rendus des séances de l'Académie des Inscriptions et Belles-Lettres, 23ᔠannée, N. 1, 1879. pp. 16-19
Sur le pays connu des anciens Chinois sous le nom de Fou-sang, et de quelques documents inédits pouvant servir à l'identifier
Hervey de Saint-Denys Léon d'. Sur le pays connu des anciens Chinois sous le nom de Fou-sang, et de quelques documents inédits pouvant servir à l'identifier. In: Comptes rendus des séances de l'Académie des Inscriptions et Belles-Lettres, 19ᔠannée, N. 4, 1875. pp. 319-335
Histoire de l'empire ottoman depuis 1792 jusqu'en 1844 / par le Bon Juchereau de St. Denys ___
Rapport de la Commission du prix de numismatique
Hervey de Saint-Denys Léon d'. Rapport de la Commission du prix de numismatique. In: Comptes rendus des séances de l'Académie des Inscriptions et Belles-Lettres, 27ᔠannée, N. 2, 1883. pp. 177-178
Discours d'ouverture du Président, séance publique annuelle
Hervey de Saint-Denys Léon d'. Discours d'ouverture du Président, séance publique annuelle. In: Comptes rendus des séances de l'Académie des Inscriptions et Belles-Lettres, 32ᔠannée, N. 6, 1888. pp. 529-544
Sur une notice de M. August Strindberg concernant les relations de la SuĂšde avec la Chine et les pays tartares, depuis le milieu du XVIIe siĂšcle jusqu'Ă nos jours
Hervey de Saint-Denys Léon d'. Sur une notice de M. August Strindberg concernant les relations de la SuÚde avec la Chine et les pays tartares, depuis le milieu du XVIIe siÚcle jusqu'à nos jours. In: Comptes rendus des séances de l'Académie des Inscriptions et Belles-Lettres, 23ᔠannée, N. 2, 1879. pp. 137-140
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