Results 71 to 80 of about 369,023 (161)

Entropy of eigenfunctions [PDF]

open access: yes, 2007
We study the high--energy limit for eigenfunctions of the laplacian, on a compact negatively curved manifold. We review the recent result of Anantharaman-Nonnenmacher giving a lower bound on the Kolmogorov-Sinai entropy of semiclassical measures, and ...
Herbert Koch   +5 more
core   +1 more source

Association between body mass index, obesity, and vulvar cancer recurrence

open access: yesInternational Journal of Gynecology &Obstetrics, Volume 170, Issue 1, Page 268-273, July 2025.
Abstract Objective The objective of this paper is to study the association between obesity and tumor recurrence in patients with vulvar cancer. Methods This is a retrospective study including vulvar cancer patients from 2003 to 2022. Our primary outcome was progression‐free survival (PFS) stratified by status of obesity, defined as body mass index (BMI)
Yossi Tzur   +7 more
wiley   +1 more source

New universal scaling laws of diffusion and Kolmogorov-Sinai entropy in simple liquids

open access: yes, 2004
A new universal scaling law relating the self-diffusivities of the components of a binary fluid mixture to their excess entropies is derived using mode coupling theory.
Samanta, Alok   +2 more
core   +1 more source

Bring It Down: A Formative Evaluation of Reach and Effectiveness of a Blood Pressure Reduction Program in Detroit, Michigan USA

open access: yesThe Journal of Clinical Hypertension, Volume 27, Issue 7, July 2025.
ABSTRACT Hypertension is the most important contributor to the development of cardiovascular disease. The objective of the Bring it Down program was to examine the reach and effectiveness of linkage to primary care via community health workers (CHWs) to improve blood pressure control among people with undiagnosed or uncontrolled hypertension.
Bethany Foster   +11 more
wiley   +1 more source

Metric Entropy of Nonautonomous Dynamical Systems [PDF]

open access: yes, 2013
We introduce the notion of metric entropy for a nonautonomous dynamical system given by a sequence of probability spaces and a sequence of measure-preserving maps between them.
Kawan Christoph   +2 more
core   +1 more source

Correlation between the Kolmogorov-Sinai entropy and the self-diffusion coefficient in simple liquids

open access: yes, 2000
Molecular dynamics simulations were performed for soft- and hard-sphere systems, for number densities ranging from 0.5 to 1.0, and the Kolmogorov-Sinai entropy (KS entropy) and self-diffusion coefficients were calculated It is found that the KS entropy ...
Lee, Eok Kyun   +4 more
core   +1 more source

Superdensity operators for spacetime quantum mechanics

open access: yesJournal of High Energy Physics, 2018
We introduce superdensity operators as a tool for analyzing quantum information in spacetime. Superdensity operators encode spacetime correlation functions in an operator framework, and support a natural generalization of Hilbert space techniques and ...
Jordan Cotler   +3 more
doaj   +1 more source

Relative slow entropy and applications [PDF]

open access: yes, 2023
Originally developed in the 1950s, Kolmogorov--Sinai entropy is a very powerful isomorphism invariant for measure-preserving systems that measures the ``complexity'' or ``randomness'' of a system.
Lott, Adam
core   +1 more source

Kolmogorov-Sinai entropy of many-body Hamiltonian systems

open access: yes, 2011
The Kolmogorov-Sinai (K-S) entropy is a central measure of complexity and chaos. Its calculation for many-body systems is an interesting and important challenge.
Lakshminarayan, Arul   +3 more
core   +1 more source

On the origin and development of some notions of entropy

open access: yesTopological Algebra and its Applications, 2015
Discrete dynamical systems are given by the pair (X, f ) where X is a compact metric space and f : X → X a continuous maps. During years, a long list of results have appeared to precise and understand what is the complexity of the systems.
Balibrea Francisco
doaj   +1 more source

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