Results 21 to 30 of about 142,522 (303)

Divergence for s -concave and log concave functions

open access: yesAdvances in Mathematics, 2014
We prove new entropy inequalities for log concave and s-concave functions that strengthen and generalize recently established reverse log Sobolev and Poincare inequalities for such functions. This leads naturally to the concept of f-divergence and, in particular, relative entropy for s-concave and log concave functions.
Caglar, Umut, Werner, Elisabeth M.
openaire   +3 more sources

Dynamic Response of a Beam Subjected to Moving Load and Moving Mass Supported by Pasternak Foundation

open access: yesShock and Vibration, 2012
This paper presents the dynamic response of an Euler- Bernoulli beam supported on two-parameter Pasternak foundation subjected to moving load as well as moving mass. Modal analysis along with Fourier transform technique is employed to find the analytical
Rajib Ul Alam Uzzal   +2 more
doaj   +1 more source

Concavity of Utility, Concavity of Welfare, and Redistribution of Income [PDF]

open access: yesSSRN Electronic Journal, 2003
The marginal social value of income redistribution is understood to depend on both the concavity of individuals’ utility functions and the concavity of the social welfare function. In the pertinent literatures, notably on optimal income taxation and on normative inequality measurement, it seems to be accepted that the role of these two sources of ...
openaire   +4 more sources

Concave Diffraction Gratings by High-Precision Injection Moulding

open access: yesProceedings, 2019
As an example of the applicable process chain, a concave grating (1175 grooves/mm) with an active area of approx. 24 mm to 24 mm has been replicated by means of electroplating and further by injection moulding with polycarbonate, resulting in a surface ...
Manuel Walch, Alexander Wörle
doaj   +1 more source

Behavior and model of grain separation for a small axial flow maize shelling unit

open access: yesEngineering and Applied Science Research, 2023
Shelling and grain separation by a small axial flow maize sheller is influenced by the performance of both the maize shelling and cleaning units. For this study, the shelling and grain separation behavior were examined in a mini-maize grain separation ...
Waree Srison   +3 more
doaj  

Impact of Concave and Convex Solid Surfaces By Liquid-Like Projectiles

open access: yesTikrit Journal of Engineering Sciences, 2007
A theoretical and experimental investigation of the normal impact of a flat-ended liquid slug onto ductile cylindrical solid targets is presented. The liquid slug is simulated by wax which is known to behave as a liquid in high speed impact situations ...
Riyadh N. Kiter, Sabah A. L. Salem
doaj   +1 more source

Log-concavity and strong log-concavity: A review

open access: yesStatistics Surveys, 2014
We review and formulate results concerning log-concavity and strong-log-concavity in both discrete and continuous settings. We show how preservation of log-concavity and strongly log-concavity on $\mathbb{R}$ under convolution follows from a fundamental monotonicity result of Efron (1969).
Saumard, Adrien, Wellner, Jon A.
openaire   +4 more sources

Nonlinear Concave Spiral Waves in Active Media Transferring Energy [PDF]

open access: yesEPJ Web of Conferences, 2019
Spiral concave autowaves are widely implemented in physics, chemistry, hydrodynamics, meteorology and other fields. A mathematical model of spiral concave autowaves based on the Fitzhugh-Nagumo equation and modified axiomatic models are presented.
Mazurov Mikhail
doaj   +1 more source

A reverse entropy power inequality for log-concave random vectors [PDF]

open access: yes, 2016
We prove that the exponent of the entropy of one-dimensional projections of a log-concave random vector defines a 1/5-seminorm. We make two conjectures concerning reverse entropy power inequalities in the log-concave setting and discuss some ...
Nayar, Piotr   +2 more
core   +1 more source

Leveraging Bismuth Immiscibility to Create Highly Concave Noble Metal Nanoparticles

open access: yes, 2023
The nanoscale integration of metals with differences in structure and electronics, while important for manipulating surface adsorption, does not typically yield structures with well-defined morphologies in colloidal synthesis.
Melissa, King   +5 more
core   +1 more source

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