Results 1 to 10 of about 75,244 (167)
Моделирование и анализ информационных систем, 2018 In this paper, we consider the key problem of geometric modeling, connected with the construction of the intersection curves of surfaces. Methods for constructing the intersection curves in complex cases are found: by touching and passing through ...
Artem D. Uvarov
doaj +3 more sources
A Method for Singular Points Detection Based on Faster-RCNN
Applied Sciences, 2018 Most methods for singular points detection usually depend on the orientation fields of fingerprints, which cannot achieve reliable and accurate detection of poor quality fingerprints.
Yonghong Liu +4 more
doaj +3 more sources
Newton-Anderson at Singular Points
International Journal of Numerical Analysis and Modeling, 2023 In this paper we develop convergence and acceleration theory for Anderson acceleration applied to Newton's method for nonlinear systems in which the Jacobian is singular at a solution. For these problems, the standard Newton algorithm converges linearly in a region about the solution; and, it has been previously observed that Anderson acceleration can ...
Matt Dallas, Sara Pollock
openaire +3 more sources
Location of singular points in orthorhombic media
Геофизический журнал, 2022 The dependence of the location of singular points of orthorhombic (ORT) media on the stiffness coefficients , and phase velocity at the singularity point is studied under the assumption that are larger than and .
Yu.V. Roganov +2 more
doaj +1 more source
Structure and Branching of Unstable Modes in a Swirling Flow
Mathematics, 2021 Swirling has a significant effect on the main characteristics of flow and can lead to its fundamental restructuring. On the flow axis, a stagnation point with zero velocity is possible, behind which a return flow zone is formed.
Vadim Akhmetov
doaj +1 more source
Point Singularities in Incompatible Elasticity [PDF]
Journal of Elasticity, 2021 The equations of stress equilibrium and strain compatibility/incompatibility are discussed for fields with point singularities in a planar domain. The sufficiency (or insufficiency) of the smooth maps, obtained by restricting the singular fields to the domain away from the singularities, in completely characterizing the equations of equilibrium and ...
Animesh Pandey, Anurag Gupta
openaire +3 more sources
Mathematics, 2022 In this paper, we consider the problem of obtaining the asymptotics of solutions of differential operators in a neighborhood of an irregular singular point.
Maria V. Korovina, Hovik A. Matevossian
doaj +1 more source
Singular Surfaces of Osculating Circles in Three-Dimensional Euclidean Space
Mathematics, 2023 In this paper, we study the surfaces of osculating circles, which are the sets of all osculating circles at all points of regular curves. Since the surfaces of osculating circles may be singular, it is necessary to investigate the singular points of ...
Kemeng Liu, Zewen Li, Donghe Pei
doaj +1 more source
The Uniqueness Theorem for the Solutions of Dual Equations of Sturm-Liouville Problems with Singular Points and Turning Points [PDF]
Sahand Communications in Mathematical Analysis, 2019 In this paper, linear second-order differential equations of Sturm-Liouville type having a finite number of singularities and turning points in a finite interval are investigated.
Seyfollah Mosazadeh
doaj +1 more source
IMPROVEMENT OF THE ALGORITHM FOR SETTING THE CHARACTERISTICS OF INTERPOLATION MONOTONE CURVE
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2023 Interpolation of a point series is a necessary step in solving such problems as building graphs de-scribing phenomena or processes, as well as modelling based on a set of reference points of the line frames defining the surface.
Yuliia Kholodniak +7 more
doaj +1 more source