Results 41 to 50 of about 441,585 (267)
Quasi-concave density estimation
, 2010 Maximum likelihood estimation of a log-concave probability density is formulated as a convex optimization problem and shown to have an equivalent dual formulation as a constrained maximum Shannon entropy problem.
Koenker, Roger, Mizera, Ivan
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Advanced Engineering Materials, EarlyView.A novel, temperature‐controlled post‐consolidation unit is developed to test its potential to improve the melt impregnation process used to manufacture continuous fiber‐reinforced filaments for additive manufacturing of high‐performance thermoplastics.
Daniel Beermann +2 more
wiley +1 more source
Convex and Concave Soft Sets and Some Properties [PDF]
, 2013 In this study, after given the definition of soft sets and their basic operations we define convex soft sets which is an important concept for operation research, optimization and related problems.
Deli, Irfan
core
Advanced Functional Materials, EarlyView.A unidirectional cerebral organoid–organoid neural circuit is established using a microfluidic platform, enabling controlled directional propagation of electrical signals, neuroinflammatory cues, and neurodegenerative disease–related proteins between spatially separated organoids.
Kyeong Seob Hwang +9 more
wiley +1 more source
On the properties of the concave antiprisms of second sort [PDF]
FME Transactions, 2013 The paper examines geometrical, static and dynamic properties of the polyhedral structures obtained by folding and creasing the two-rowed segment of equilateral triangular net.
Obradović Marija +2 more
doaj
BMC Pulmonary Medicine, 2020 Background The flow-volume (FV) curve pattern in the pulmonary function test (PFT) for obstructive lung diseases is widely recognized. However, there are few reports on FV curve pattern in idiopathic pulmonary fibrosis (IPF).
Hiroaki Nakagawa +9 more
doaj +1 more source
A Concave Regularly Varying Leader for Equi-concave Functions
Journal of Mathematical Analysis and Applications, 1994 Two functions \(\phi\) and \(\psi\) are equivalent \((\phi\sim \psi)\) if there exists a constant \(c> 0\) such that for each \(t\geq 0\), \(c^{- 1}\psi(t)\leq \phi(t)\leq c\psi(t)\). A function \(\phi\) is said to be equiconcave if \(\phi(0)= 0\) and there is a concave function \(\psi\) such that \(\psi\sim \phi\).
Abakumov, E.V., Mekler, A.A.
openaire +2 more sources
Chevet type inequality and norms of submatrices
, 2011 We prove a Chevet type inequality which gives an upper bound for the norm of an isotropic log-concave unconditional random matrix in terms of expectation of the supremum of "symmetric exponential" processes compared to the Gaussian ones in the Chevet ...
Adamczak, Radosław +4 more
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Advanced Functional Materials, EarlyView.A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou +8 more
wiley +1 more source
Concavity and perturbed concavity for p-Laplace equations
Journal of Differential EquationsIn this paper we study convexity properties for quasilinear Lane-Emden-Fowler equations of the type $$\begin{cases} -Δ_p u = a(x) u^q & \quad \hbox{ in $Ω$},\\ u >0 & \quad \hbox{ in $Ω$}, \\ u =0 & \quad \hbox{ on $\partial Ω$}, \end{cases}$$ when $Ω\subset \mathbb{R}^N$ is a convex domain.
Gallo M., Squassina M.
openaire +4 more sources