نتایج جستجو برای: l projection

تعداد نتایج: 678209  

Journal: :Neuropharmacology 2007
Yann Humeau Andreas Lüthi

Postsynaptic induction of long-term potentiation (LTP) at cortical and thalamic afferent synapses onto lateral amygdala (LA) projection neurons not only involves NMDA receptor activation, but also depends on L-type voltage-dependent calcium channels (L-VDCCs). Here we show, using whole cell recordings and two-photon Ca2+ imaging, that L-VDCCs contribute to the induction of dendritic Ca2+ spikes...

1983
Kemt A. Stevens

Human vision is adept at inferr ing surface shape from a projection of curves lying across a surface, part icular ly from paral lel undulating curves. Since the image projection loses 3-D information, the interpretation must be constrained by certain a p r io r i assumptions. A theory of constraint on this problem [Stevens 1981a] proposes three assumptions, namely that neither the viewpoint nor...

Sequential optimality conditions provide adequate theoretical tools to justify stopping criteria for nonlinear programming solvers. Here, nonsmooth approximate gradient projection and complementary approximate Karush-Kuhn-Tucker conditions are presented. These sequential optimality conditions are satisfied by local minimizers of optimization problems independently of the fulfillment of constrai...

Journal: :Informatica (Slovenia) 2006
Sergio Cabello Matt DeVos Bojan Mohar

Let P be a set of n points in the plane. For a line L ⊂ R, we can project the points P orthogonally onto L, which we denote by πL(P ). Imagine that the line L is a graduated line, that is, a line decomposed into line segments (cells) of length one. For a cell c ⊂ L, let Pop(P, c) be the population of the cell c after the projection, that is Pop(P, c) = |{p ∈ P |πL(p) ∈ c}|. For a graduated line...

2010
JINCHAO XU

Counterexamples are given to show that some results concerning a weighted L projection presented earlier by Bramble and the author are sharp, i.e., that certain error and stability estimates are impossible in some cases.

Journal: :Journal of Geometric Analysis 2023

We apply the Bekollé–Bonami estimate for (positive) Bergman projection on weighted $$L^p$$ spaces unit disk. As consequences, we obtain boundedness of Sobolev space symmetrized bidisk. also improve result unweighted bidisk in Chen et al. (J Funct Anal 279(2):108522, 2020).

‎In this paper we investigate a two classes of domains in $mathbb{C}^n$ generalizing the Hartogs triangle‎. ‎We prove optimal estimates for the mapping properties of the Bergman projection on these domains.

1993
S. M. F GILLES PISIER

— This paper is mainly devoted to the following question : let M, N be Von Neumann algebras with M C N. If there is a completely bounded projection P : N -^ M, is there automatically a contractive projection P : N -^ M? We give an affirmative answer with the only restriction that M is assumed semi-finite. The main point is the isometric identification of the complex interpolation space (AO, Ai ...

1996
Scott C. Douglas

The recently-introduced fast aane projection (FAP) adaptive lter has performance rivalling that of the RLS adaptive lter in many situations. However , the sliding-window RLS algorithm embedded within the FAP adaptive lter can be too complex to implement in some cases. In this paper, we describe an alternate implementation of the FAP adaptive lter that uses orthogonal transforms to approximately...

Journal: :Réalités industrielles 2021

Le Brexit a fait l’objet d’analyses extrêmement contradictoires. Sa compréhension été compliquée par des jeux politiciens deux côtés de la Manche, qui ont souvent masqué ses enjeux stratégiques à long terme. Il pose en effet défis complexes l’Union européenne. Ceux-ci méritent une réflexion sérieuse, ca...

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