Results 121 to 130 of about 4,657,305 (302)

Singularities of Connection Ricci Flow and Ricci Harmonic Flow

open access: yes, 2013
In this paper, we study the singularities of two extended Ricci flow systems --- connection Ricci flow and Ricci harmonic flow using newly-defined curvature quantities. Specifically, we give the definition of three types of singularities and their corresponding singularity models, and then prove the convergence. In addition, for Ricci harmonic flow, we
openaire   +2 more sources

Regularising the Ricci Flow Embedding [PDF]

open access: yes, 2010
This paper concerns the analysis of patterns that are specified in terms of non-Euclidean dissimilarity or proximity rather than ordinal values. In prior work we have reported a means of correcting or rectifying the similarities so that the non-Euclidean artifacts are minimized.
Xu W., Hancock E.R., Wilson R.C.
openaire   +1 more source

Psychological and Clinical Factors Mediate Post‐COVID‐19 Irritable Bowel Syndrome

open access: yesNeurogastroenterology &Motility, EarlyView.
ABSTRACT Background Exposure to COVID‐19 has been shown previously to be associated with a higher risk for irritable bowel syndrome (IBS). This study aimed to better explain this relationship using mediation analysis. Methods This post hoc analysis of a multicenter cohort study includes 623 patients with and without COVID‐19 infection. All participants
Keren Hod   +68 more
wiley   +1 more source

Gauge fields in a string-cigar braneworld

open access: yesPhysics Letters B, 2015
In this work, we investigate the properties of the Abelian gauge vector field in the background of a string-cigar braneworld. Both the thin and thick brane limits are considered.
F.W.V. Costa   +3 more
doaj   +1 more source

The crop wild relative Fragaria vesca as source of resistance against strawberry anthracnose

open access: yesPlant Biology, EarlyView.
The crop wild relative Fragaria vesca is a valuable resource to mine for novel resistance factors against Colletotrichum. Abstract The genetic diversity of Fragaria species in situ has great potential for breeding resistance in cultivated strawberries against anthracnose disease.
C. Rose   +5 more
wiley   +1 more source

University Collaboration and Digitalization in SMEs: The Mediating Role of Managers' Digital Knowledge

open access: yesR&D Management, EarlyView.
ABSTRACT Digital technologies change the nature of product and service development and challenge established firms to adapt to the new digital environment. As small and medium‐sized enterprises (SMEs), in particular, lack the resources necessary to digitally transform their business, they are forced to find new strategies to stay competitive in a ...
Christian Schröder   +3 more
wiley   +1 more source

The Ricci flow and the early universe

open access: yesAnnals of Physics, 2023
A framework of quantum spacetime reference frame is proposed and reviewed, in which the quantum spacetime at the Gaussian approximation is deformed by the Ricci flow. At sufficient large scale, the Ricci flow not only smooths out local small irregularities making the universe a homogeneous and isotropic Friedmann-Robertson-Walker metric, but also ...
openaire   +2 more sources

Chronic and acute mediators of passive viscoelasticity in human skeletal muscle fibres

open access: yesExperimental Physiology, EarlyView.
Abstract The cellular viscoelastic modulus in skeletal muscle tissue responds dynamically to chronic stressors, such as age and exercise. Passive tissue mechanics can also be sensitive to acute stimuli, such as mechanical loading and/or activation‐induced muscle fatigue.
Grace E. Privett   +3 more
wiley   +1 more source

Collapsing immortal Kähler-Ricci flows

open access: yesForum of Mathematics, Pi
We consider the Kähler-Ricci flow on compact Kähler manifolds with semiample canonical bundle and intermediate Kodaira dimension, and show that the flow collapses to a canonical metric on the base of the Iitaka fibration in the locally smooth topology ...
Hans-Joachim Hein   +2 more
doaj   +1 more source

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