Reconfiguration Error Correction Model for an FBG Shape Sensor Based on the Sparrow Search Algorithm
Sensors, 2023 A reconfiguration error correction model for an FBG shape sensor (FSS) is proposed. The model includes curvature, bending direction error correction, and the self-correction of the FBG placement angle and calibration error based on an improved sparrow ...
Qiufeng Shang, Feng Liu
doaj +1 more source
Curvature estimates for surfaces with bounded mean curvature [PDF]
Transactions of the American Mathematical Society, 2012 Estimates for the norm of the second fundamental form, | A | |A| , play a crucial role in studying the geometry of surfaces in R 3 \mathbb {R}^3 . In fact, when | A |
Bourni, Theodora, Tinaglia, Giuseppe
openaire +7 more sources
Classification of 3D Archaeological Objects Using Multi-View Curvature Structure Signatures
IEEE Access, 2019 We propose a generalized 3D shape descriptor for the efficient classification of 3D archaeological artifacts. Our descriptor is based on a multi-view approach of curvature features, consisting of the following steps: pose normalization of 3D models ...
Mario Canul-Ku +4 more
doaj +1 more source
Curvature based characterization of radial basis functions: application to interpolation
Mathematical Modelling and Analysis, 2023 Choosing the scale or shape parameter of radial basis functions (RBFs) is a well-documented but still an open problem in kernel-based methods. It is common to tune it according to the applications, and it plays a crucial role both for the accuracy and ...
Mohammad Heidari +2 more
doaj +1 more source
Geometric realizations of Kaehler and of para-Kaehler curvature models [PDF]
, 2009 We show that every Kaehler algebraic curvature tensor is geometrically realizable by a Kaehler manifold of constant scalar curvature. We also show that every para-Kaehler algebraic curvature tensor is geometrically realizable by a para-Kaehler manifold of constant scalar ...
arxiv +1 more source
Curvotaxis directs cell migration through cell-scale curvature landscapes
Nature Communications, 2018 Cells have evolved multiple mechanisms to apprehend and adapt finely to their environment. Here we report a new cellular ability, which we term “curvotaxis” that enables the cells to respond to cell-scale curvature variations, a ubiquitous trait of ...
Laurent Pieuchot +15 more
semanticscholar +1 more source
On foliations of bounded mean curvature on closed three-dimensional Riemannian manifolds
Pracì Mìžnarodnogo Geometričnogo Centru, 2023 The notion of systole of a foliation sys(ℱ) on an arbitrary foliated closed Riemannian manifold (M,ℱ) is introduced. A lower bound on sys(ℱ) of a bounded mean curvature foliation is given.
Dmytry Bolotov
doaj +1 more source
Geometrical Properties of a Point-like Global Monopole Spacetime [PDF]
arXiv, 2023 The aim of this paper is to study the geometric properties of the point-like global monopole (briefly, PGM) spacetime, which is a static and spherically symmetric solution of the Einstein's field equations. It has shown that PGM spacetime admits various types of pseudosymmetry structures, such as pseudosymmetry due to Weyl conformal curvature tensor ...
arxiv
Modified gravity with negative and positive powers of the curvature: Unification of the inflation and of the cosmic acceleration [PDF]
, 2003 The modified gravity, which eliminates the need for dark energy and which seems to be stable, is considered. The terms with positive powers of the curvature support the inflationary epoch while the terms with negative powers of the curvature serve as ...
S. Nojiri, S. Odintsov
semanticscholar +1 more source