Results 51 to 60 of about 4,846 (246)

A generalized 2-D Poincaré inequality

open access: yesJournal of Inequalities and Applications, 2000
Two 1-D Poincaré-like inequalities are proved under the mild assumption that the integrand function is zero at just one point. These results are used to derive a 2-D generalized Poincare inequality in which the integrand function is zero on a ...
Crisciani Fulvio, Cavallini Fabio
doaj  

Connecting quasinormal modes and heat kernels in 1-loop determinants

open access: yesSciPost Physics, 2020
We connect two different approaches for calculating functional determinants on quotients of hyperbolic spacetime: the heat kernel method and the quasinormal mode method.
Cynthia Keeler, Victoria L. Martin, Andrew Svesko
doaj   +1 more source

Hölder Continuity up to the Boundary of Minimizers for Some Integral Functionals with Degenerate Integrands [PDF]

open access: yesJournal of Applied Mathematics and Stochastic Analysis, 2007
We study qualitative properties of minimizers for a class of integral functionals, defined in a weighted space. In particular we obtain Hölder regularity up to the boundary for the minimizers of an integral functional of high order by using an interior local regularity result and a modified Moser method with special test function.
BONAFEDE S   +2 more
openaire   +3 more sources

How Does Our Degrading System Perform?

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT We discuss the quality of performance of degrading systems when degradation is modeled by a stochastic process with independent increments and increasing sample paths. As an example, the gamma process is considered. First, for the continuously observed degradation, by comparing with the black‐box scenario (without observing degradation), the ...
Maxim Finkelstein   +2 more
wiley   +1 more source

Clark-Ocone type formulas in the Meixner white noise analysis

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
In the classical Gaussian analysis the Clark-Ocone formula allows to reconstruct an integrand if we know the Ito stochastic integral. This formula can be written in the form$$F=\mathbf EF+\int\mathbf E\big\{\partial_t F|_{\mathcal F_t}\big\}dW_t,$$where ...
N. A. Kachanovsky
doaj   +1 more source

Financial Climate‐Risk Measurement, Impact Funds, and Green Transitions

open access: yesJournal of Accounting Research, EarlyView.
ABSTRACT Regulators are contemplating or mandating precise measurement of financial climate‐risk exposure to promote sustainable investments. We show that such mandates can be counterproductive in the presence of social funds that catalyze change by subsidizing the adoption of cleaner production technologies.
VOLKER LAUX, LUCAS MAHIEUX
wiley   +1 more source

SDFs from Unoriented Point Clouds using Neural Variational Heat Distances

open access: yesComputer Graphics Forum, EarlyView.
We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from unoriented point clouds. We first compute a small time step of heat flow (middle) and then use its gradient directions to solve for a neural SDF (right). Abstract We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from ...
Samuel Weidemaier   +5 more
wiley   +1 more source

Wave Tracing: Generalizing The Path Integral To Wave Optics

open access: yesComputer Graphics Forum, EarlyView.
Abstract Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray‐based models.
Shlomi Steinberg, Matt Pharr
wiley   +1 more source

Stochastic Pairwise MIS for Unbiased Large‐Kernel Reuse in Real‐Time

open access: yesComputer Graphics Forum, EarlyView.
Abstract Spatiotemporal resampling methods such as ReSTIR decrease noise in Monte Carlo rendering of dynamic content by reusing paths across frames and pixels. Standard ReSTIR reuses spatially from a small number of randomly selected neighbors. This reuse suffers when few neighbors contain contributing samples, reducing quality toward that of the ...
Trevor Hedstrom   +4 more
wiley   +1 more source

Application of the Euler's gamma function to a problem related to F. Carlson's uniqueness theorem

open access: yes, 2016
In his work on F. Carlson's uniqueness theorem for entire functions of exponential type, Q. I. Rahman [5] was led to consider an infinite integral and needed to determine the rate at which the integrand had to go to zero for the integral to converge.
Qazi, M. A.
core   +1 more source

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