Relevant bibliographies by topics / Laplacien et projection

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Laplacien et projection'

Author: Grafiati
Published: 22 February 2024
Last updated: 31 July 2025

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Journal articles on the topic "Laplacien et projection"

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Boucetta, M. "Spectre des Laplaciens de Lichnerowicz sur les sphères et les projectifs réels." Publicacions Matemàtiques 43 (July 1, 1999): 451–83. http://dx.doi.org/10.5565/publmat_43299_02.

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Doerenkamp, Tim, Felix N. Buechi, Thomas J. Schmidt, and Jens Eller. "Capillary Pressure Controlled Water Pathways in Gas Diffusion Layers for Polymer Electrolyte Fuel Cells Designed By Additive Manufacturing." ECS Meeting Abstracts MA2023-02, no. 38 (2023): 1873. http://dx.doi.org/10.1149/ma2023-02381873mtgabs.

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Polymer electrolyte fuel cells (PEFC) are considered to make a significant contribution to the transition towards carbon free energy conversion, as they produce electric power from hydrogen and oxygen with water as the only by-product [1]. On its way to widespread commercialization, in particular the water management in PEFC is challenging. On one hand, the electrolyte membrane needs to be humidified to be highly conductive for the hydrogen protons. On the other hand, accumulation of the product water in the gas diffusion layer (GDL) on the cathode side mitigates the oxygen transport towards t
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Lauerwald, Ronny, Pierre Regnier, Marta Camino-Serrano, et al. "ORCHILEAK (revision 3875): a new model branch to simulate carbon transfers along the terrestrial–aquatic continuum of the Amazon basin." Geoscientific Model Development 10, no. 10 (2017): 3821–59. http://dx.doi.org/10.5194/gmd-10-3821-2017.

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Abstract. Lateral transfer of carbon (C) from terrestrial ecosystems into the inland water network is an important component of the global C cycle, which sustains a large aquatic CO2 evasion flux fuelled by the decomposition of allochthonous C inputs. Globally, estimates of the total C exports through the terrestrial–aquatic interface range from 1.5 to 2.7 Pg C yr−1 (Cole et al., 2007; Battin et al., 2009; Tranvik et al., 2009), i.e. of the order of 2–5 % of the terrestrial NPP. Earth system models (ESMs) of the climate system ignore these lateral transfers of C, and thus likely overestimate t
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Larsen, Leif. "Determination of Pressure-Transient and Productivity Data for Deviated Wells in Layered Reservoirs." SPE Reservoir Evaluation & Engineering 2, no. 01 (1999): 95–103. http://dx.doi.org/10.2118/54701-pa.

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Summary Analytical methods are presented to determine pressure-transient and productivity data for deviated wells in layered reservoirs. The computational methods, which are based on Laplace transforms, can be used to generate types curves for use in direct analyses of pressure-transient data and to determine the effective skin of such wells for use in productivity computations. Introduction Deviated wells with full or limited flow entry are very common, especially in offshore developments. The pressure-transient behavior of fully penetrating deviated wells were investigated by Cinco et al.1 f
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Carstensen, Carsten, Benedikt Gräßle, and Ngoc Tien Tran. "Adaptive hybrid high-order method for guaranteed lower eigenvalue bounds." Numerische Mathematik, May 6, 2024. http://dx.doi.org/10.1007/s00211-024-01407-w.

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AbstractThe higher-order guaranteed lower eigenvalue bounds of the Laplacian in the recent work by Carstensen et al. (Numer Math 149(2):273–304, 2021) require a parameter $$C_{\text {st},1}$$ C st , 1 that is found not robust as the polynomial degree p increases. This is related to the $$H^1$$ H 1 stability bound of the $$L^{2}$$ L 2 projection onto polynomials of degree at most p and its growth $$C_{\textrm{st, 1}}\propto (p+1)^{1/2}$$ C st, 1 ∝ ( p + 1 ) 1 / 2 as $$p \rightarrow \infty $$ p → ∞ . A similar estimate for the Galerkin projection holds with a p-robust constant $$C_{\text {st},2}
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Kim, Donggyu. "Baker–Bowler Theory for Lagrangian Grassmannians." International Mathematics Research Notices 2025, no. 8 (2025). https://doi.org/10.1093/imrn/rnaf094.

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Abstract Baker and Bowler [3] showed that the Grassmannian can be defined over a tract, a field-like structure generalizing both partial fields and hyperfields. This notion unifies theories of matroids over partial fields, valuated matroids, and oriented matroids. We extend Baker–Bowler theory to the Lagrangian Grassmannian which is the set of maximal isotropic subspaces in a $2n$-dimensional symplectic vector space. By Boege et al. [7], the Lagrangian Grassmannian is parameterized as a subset of the projective space of dimension $2^{n-2}(4+\binom{n}{2})-1$ and its image is cut out by certain
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Dissertations / Theses on the topic "Laplacien et projection"

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Ben, Messaoud Rémy. "Low-dimensional controllability of complex networks and applications to the human brain." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS537.

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La théorie de la contrôlabilité et du contrôle optimal sont des branches des mathématiques qui ont été développées durant la révolution industrielle pour commander des systèmes d'ingénierie. De nos jours, beaucoup de systèmes sont interconnectés tel qu'Internet, les réseaux de transport ou bien les réseaux électriques. Le monde biologique regorge aussi de réseaux : réseaux vasculaires, réseaux d'interaction de gènes ou même les réseaux de connectivité cérébrale. Contrôler ces systèmes complexes interconnectés est un challenge actuel. La dernière décennie a vu une explosion des études qui appli
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Conference papers on the topic "Laplacien et projection"

1

Salih, A., and S. Ghosh Moulic. "A Level Set Method for Simulation of Coalescence of Droplets." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79507.

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In the present paper, we discuss a numerical method based on the level set algorithm to simulate two-phase fluid flow systems. Surface tension force at the fluid interface is implemented through the CSF model of Brackbill et al. [1]. The incompressible Navier-Stokes equations were solved on a staggered grid using an explicit projection method. A fifth-order WENO [2] scheme was used for advancing the level set function. We improved the implementation of WENO scheme by staggering the level set function. The Navier-Stokes part of the code was validated by computing the standard lid-driven cavity
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