Results 61 to 70 of about 100,495 (211)

Lymphatic Abnormalities in Noonan Syndrome Extend Beyond Clinically Apparent Disease

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Lymphatic disease represents a well‐described manifestation of Noonan syndrome (NS), yet the full phenotypic spectrum remains incompletely characterized, especially in asymptomatic individuals. We conducted a cross‐sectional study including 10 individuals with NS (four with peripheral lymphedema and six without) and 10 age‐ and sex‐matched ...
Inger Norlyk Sheyanth   +7 more
wiley   +1 more source

Structural properties of the sets of positively curved Riemannian metrics on generalized Wallach spaces

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
In the present paper sets related to invariant Riemannian metrics of positive sectional and (or) Ricci curvature on generalized Wallach spaces are considered.
N.A. Abiev
doaj   +1 more source

Differential Harnack inequalities for nonlinear heat equations with potentials under the Ricci flow

open access: yes, 2012
We prove several differential Harnack inequalities for positive solutions to nonlinear backward heat equations with different potentials coupled with the Ricci flow.
Aronson   +15 more
core   +1 more source

Stability of ALE Ricci-Flat Manifolds Under Ricci Flow [PDF]

open access: yesThe Journal of Geometric Analysis, 2020
AbstractWe prove that if an ALE Ricci-flat manifold (M, g) is linearly stable and integrable, it is dynamically stable under Ricci flow, i.e. any Ricci flow starting close togexists for all time and converges modulo diffeomorphism to an ALE Ricci-flat metric close tog. By adapting Tian’s approach in the closed case, we show that integrability holds for
Alix Deruelle, Klaus Kröncke
openaire   +3 more sources

Measuring Corporate Alignment With the Circular Economy: a Text‐Based Circularity Index From Mandatory Non‐Financial Disclosures

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The transition to a circular economy (CE) has become a strategic priority for firms, yet empirical assessments of corporate circularity remain fragmented and heavily dependent on structured indicators or self‐reported metrics. This paper proposes a novel, text‐based circularity index derived from mandatory non‐financial statements of large ...
Giuseppe Pernagallo   +2 more
wiley   +1 more source

Eigenvalue lower bounds and splitting for modified Ricci flow

open access: yesAdvanced Nonlinear Studies
We prove sharp lower bounds for eigenvalues of the drift Laplacian for a modified Ricci flow. The modified Ricci flow is a system of coupled equations for a metric and weighted volume that plays an important role in Ricci flow.
Colding Tobias Holck   +1 more
doaj   +1 more source

Stability of piecewise flat Ricci flow in three dimensions

open access: yesJournal of Numerical Analysis and Approximation Theory
For a recently developed piecewise flat approximation of the Ricci flow, numerical instabilities are seen to arise for a particularly useful class of mesh-types.
Rory Conboye
doaj   +1 more source

A design tool for globally developable discrete architectural surfaces using Ricci flow

open access: yesJapan Architectural Review, 2023
This paper presents an approach for the design of discrete architectural surfaces that are globally developable; that is, having zero Gaussian curvature at every interior node.
Jingyao Zhang, Makoto Ohsaki
doaj   +1 more source

Frailty and Cardiovascular Events as Determined by Body Composition: A Systematic Review

open access: yesChronic Diseases and Translational Medicine, EarlyView.
Frailty phenotypes and risk of cardiovascular disease. Sarcopenic obese phenotype is associated with increased prevalence of cardiovascular risk factors and progression of metabolic syndrome, leading to cardiovascular events and cardiovascular mortality, while the Anorexic malnourished phenotype is associated with reduced prevalence of cardiovascular ...
Ishleen Oberoi   +5 more
wiley   +1 more source

Topological Signals of Singularities in Ricci Flow

open access: yesAxioms, 2017
We implement methods from computational homology to obtain a topological signal of singularity formation in a selection of geometries evolved numerically by Ricci flow.
Paul M. Alsing   +6 more
doaj   +1 more source

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