Results 21 to 30 of about 847,053 (257)
The bulk metal content of WASP-80 b from joint interior-atmosphere retrievals
Astronomy & AstrophysicsThe atmospheres of warm gas giants can be readily characterized through transmission and emission spectroscopy. WASP-80 b is one such exoplanet, with an unusually low density that is in tension with the metal-rich composition expected for a planet of ...
Acuña-Aguirre L. +3 more
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Journal of Optimization, Differential Equations and Their Applications, 2020 Vladimir L. Borsch +2 more
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Experimental investigations in combining primal dual interior point method and simplex based LP solvers [PDF]
, 1993 The use of a primal dual interior point method (PD) based optimizer as a robust linear programming (LP) solver is now well established. Instead of replacing the sparse simplex algorithm (SSX), the PD is increasingly seen as complementing it. The progress
Levkovitz, R, Mitra, G, Tamiz, M
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Hierarchical control for the semilinear parabolic equations with interior degeneracy [PDF]
, 2023 This paper concerns with the hierarchical control of the semilinear parabolic equations with interior degeneracy. By a Stackelberg-Nash strategy, we consider the linear and semilinear system with one leader and two followers. First, for any given leader,
Gao, Hang, Zhang, Muming, Yang, Wei
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Journal of Optimization, Differential Equations and Their Applications, 2020 Vladimir L. Borsch, Peter I. Kogut
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Null controllability of a population dynamics with interior degeneracy
Electronic Journal of Differential Equations, 2017 Dans cet article, nous traitons de la contrôlabilité nulle d'un modèle de dynamique de population avec une diffusion dégénérée intérieure. À cette fin, nous avons d'abord prouvé une nouvelle estimation de Carleman pour le système adjoint complet et ensuite nous en déduisons une inégalité d'observabilité appropriée qui sera nécessaire pour établir l ...
Idriss Boutaayamou, Younes Echarroudi
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Addressing Rank Degeneracy in Constraint-Reduced Interior-Point Methods for Linear Optimization [PDF]
Journal of Optimization Theory and Applications, 2013 The authors investigate ways to efficiently deal with rank-degeneracy in linear optimization (that is, the dual problem has many more constraints than variables). Specifically, the first constraint-reduced primal-dual interior-point scheme proposed is based on a type of regularization of the Newton-KKT system, and the second on a new type of search ...
Winternitz, Luke B. +2 more
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Tuning Valley Degeneracy with Band Inversion [PDF]
, 2021 Valley degeneracy is a key feature of the electronic structure that benefits the thermoelectric performance of a material. Despite recent studies which claim that high valley degeneracy can be achieved with inverted bands, our survey of rock-salt IV-VI ...
Badih A., Assaf +6 more
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The partial boundary value conditions of nonlinear degenerate parabolic equation
Boundary Value Problems, 2022 The stability of the solutions to a parabolic equation ∂ u ∂ t = Δ A ( u ) + ∑ i = 1 N b i ( x , t ) D i u − c ( x , t ) u − f ( x , t ) $$ \frac{\partial u}{\partial t} = \Delta A(u) +\sum_{i=1}^{N}b_{i}(x,t)D_{i}u-c(x,t)u-f(x,t) $$ with homogeneous ...
Yuan Zhi, Huashui Zhan
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ON THE PROBLEM OF THE NUMERICAL MODEL CONSTRUCTION OF ZERO-AGE SUBSTARS
Odessa Astronomical Publications, 2017 The numerical modelling of substars inner structure is analysed and main definitions are suggested. Here we present results of calculation of degeneracy parameter ψ, permitting to make calculate the dependence of number of free electrons on function ...
V. A. Zakhozhaj +4 more
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