Results 11 to 20 of about 303,599 (157)

Computational simulation of the intervertebral disc [PDF]

open access: yes, 2013
The intervertebral disc is a complex structure unlike any other in the human body. The capability to withstand high loads and deformations in six degrees of freedom is facilitated by the unique soft tissue structures. However, the mechanical behaviour of
Luxmoore, Bethany Jane
core   +6 more sources

Phase portraits of the Selkov model in the Poincaré disc [PDF]

open access: yes, 2022
In this paper we classify the phase portraits in the Poincaré disc of the Selkov model for the glycolysis process x˙ = -x + ay + x2y, y˙ = b - ay - x2y, in function of its parameters a, b ∈ R. In particular we determine the regions in the parameter plane
Llibre, Jaume, Nabavi, Arefeh
core   +1 more source

An investigation into the fertilizer particle dynamics off-the-disc [PDF]

open access: yes, 2015
The particle size range specifications for two biosolids-derived organomineral fertilizers (OMF) known as OMF10 (10:4:4) and OMF15 (15:4:4) were established.
Miller, P. C. H.   +5 more
core   +1 more source

The Disc Embedding Theorem

open access: yes, 2021
Based on Fields medal winning work of Michael Freedman, this book explores the disc embedding theorem for 4-dimensional manifolds. This theorem underpins virtually all our understanding of topological 4-manifolds.

core   +7 more sources

On the cyclicity of Kolmogorov polycycles

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2022
In this paper we study planar polynomial Kolmogorov's differential systems \[ X_\mu\quad\begin{cases}{\dot{x}=f(x,y;\mu),}\\{\dot{y}=g(x,y;\mu),} \end{cases} \] with the parameter $\mu$ varying in an open subset $\Lambda\subset\mathbb{R}^N ...
David Marín, Jordi Villadelprat
doaj   +1 more source

The Quaternionic Hardy Space and the Geometry of the Unit Ball

open access: yesBruno Pini Mathematical Analysis Seminar, 2015
The quaternionic Hardy space of slice regular functions H2(B) is a reproducing kernel Hilbert space. In this note we see how this property can be exploited to construct a Riemannian metric on the quaternionic unit ball B and we study the geometry arising
Giulia Sarfatti
doaj   +1 more source

disc-re/Contrail-Statistics: Contrail Statistics Tool

open access: yes, 2022
This analysis tool evaluates the atmospheric contrail formation conditions based on ECMWF ERA-5 Reanalysis data and helps to obtain an overview of the frequency of contrail formation over the last 10 years at different altitudes, seasons and ...
disc-re
core   +1 more source

The hyperbolic geometry of financial networks

open access: yesScientific Reports, 2021
Based on data from the European banking stress tests of 2014, 2016 and the transparency exercise of 2018 we construct networks of European banks and demonstrate that the latent geometry of these financial networks can be well-represented by geometry of ...
Martin Keller-Ressel, Stephanie Nargang
doaj   +1 more source

The theorems of Stewart and Steiner in the Poincaré disc model of hyperbolic geometry [PDF]

open access: yes, 2009
summary:In [Comput. Math. Appl. 41 (2001), 135--147], A. A. Ungar employs the Möbius gyrovector spaces for the introduction of the hyperbolic trigonometry.
Demirel, Oğuzhan
core   +1 more source

Non-relativistic supersymmetry on curved three-manifolds

open access: yesJournal of High Energy Physics, 2020
We construct explicit examples of non-relativistic supersymmetric field theories on curved Newton-Cartan three-manifolds. These results are obtained by performing a null reduction of four-dimensional supersymmetric field theories on Lorentzian manifolds ...
E.A. Bergshoeff   +4 more
doaj   +1 more source

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