Results 101 to 110 of about 287,072 (265)

Evaluating the effects of preprocessing, method selection, and hyperparameter tuning on SAR-based flood mapping and water depth estimation [PDF]

open access: yesNatural Hazards and Earth System Sciences
Flood mapping and water depth estimation from Synthetic Aperture Radar (SAR) imagery are crucial for calibrating and validating hydraulic models. This study uses SAR imagery to evaluate various preprocessing (especially speckle noise reduction), flood ...
J.-P. Travert   +7 more
doaj   +1 more source

Derivation and numerical approximation of hyperbolic viscoelastic flow systems: Saint-Venant 2D equations for Maxwell fluids [PDF]

open access: yes, 2017
We pursue here the development of models for complex (viscoelastic) fluids in shallow free-surface gravity flows which was initiated by [Bouchut-Boyaval, M3AS (23) 2013] for 1D (translation invariant) cases.
Boyaval, Sébastien
core   +1 more source

Sulla sesta distorsione elementare di Volterra per un cilindro cavo omogeneo e isotropo di altezza finita con carico alla Saint Venant

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2008
In this work we consider the sixth elementary Volterra's distortion for a circular hollow, homogeneous, elastic, isotropic cylinder, to analyze the load acting on the bases as a Saint Venant characteristic external stress.
Pecoraio, Massimo   +2 more
doaj   +1 more source

Penurunan Persamaan Saint Venant Secara Geometris

open access: yes, 2013
Penelitian ini bertujuan menurunkan Persamaan Saint Venant secara geometris. Persamaan Saint Venant digunakan untuk memodelkan aliran pada saluran terbuka seperti sungai dan digunakan juga untuk memodelkan penelusuran banjir.
Widjajanti, Tri   +2 more
core  

Perturbation methods in torsion of thin hollow Saint-Venant cylinders

open access: yes, 1996
International audienceIn this paper we propose a perturbation method for calculating the fields appearing in Saint-Venant torsion theory in terms of a parameter (ε) characterizing the thickness of the cross section (CS) of Saint-Venant cylinders (SVC ...
Dell'Isola, Francesco   +2 more
core   +1 more source

Manuel d'archéologie préhistorique, par J. Déchelette, conservateur du Musée de Roanne, membre non résidant du Comité des Travaux historiques, 1908

open access: yes, 1909
Saint-Venant J. de. Manuel d'archéologie préhistorique, par J. Déchelette, conservateur du Musée de Roanne, membre non résidant du Comité des Travaux historiques, 1908. In: Bulletin Monumental, tome 73, année 1909. pp.
De Saint-Venant, J.
core  

Formal derivation of a new sediment transport model using a multiscale procedure: Numerical Validation

open access: yesPartial Differential Equations in Applied Mathematics
We study in this work structures formed under a unidirectional flow. The main problem that addresses sediment transport by aquatic flow. We present the formal derivation of a new sediment transport model by using a multiscale procedure in time and space.
Julien Zongo   +2 more
doaj   +1 more source

SAINT-VENANT TYPE ESTIMATE FOR THE WAVE EQUATION

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2002
Bu çalışmada hızı azalan bir dalga denklemi için Uzaysal Azalım Kestirimi elde edilmiştir. Yük bölgesinden uzaklaşıldıkça son etkilerin, en azından kısa zaman aralıkları için çok hızlı bir şekilde azaldığı görülmüştür.
METİN YAMAN, Ö. FARUK GÖZÜKIZIL
doaj   +1 more source

Johnson-Segalman – Saint-Venant equations for viscoelastic shallow flows in the elastic limit

open access: yes, 2016
International audienceThe shallow-water equations of Saint-Venant, often used to model the long-wave dynamics of free-surface flows driven by inertia and hydrostatic pressure, can be generalized to account for the elongational rheology of non-Newtonian ...
Boyaval, Sébastien
core   +1 more source

A new model for shallow viscoelastic free-surface flows forced by gravity on rough inclined bottom

open access: yesESAIM: Proceedings and Surveys, 2014
A thin-layer model for shallow viscoelastic free-surface gravity flows on slippery topographies around a flat plane has been derived recently in [Bouchut-Boyaval, M3AS (23) 2013]. We show here how the model can be modified for flows
Boyaval Sébastien
doaj   +1 more source

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