Results 21 to 30 of about 966,408 (295)

07212 Abstracts Collection – Constraint Databases, Geometric Elimination ang Geographic Information Systems [PDF]

open access: yes, 2007
From 20.05. to 25.05., the Dagstuhl Seminar 07212 ``Constraint Databases, Geometric Elimination and Geographic Information Systems'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl.
Kuijpers, Bart   +2 more
core   +1 more source

An Improved Visual SLAM Based on Map Point Reliability under Dynamic Environments

open access: yesApplied Sciences, 2023
The visual simultaneous localization and mapping (SLAM) method under dynamic environments is a hot and challenging issue in the robotic field. The oriented FAST and Rotated BRIEF (ORB) SLAM algorithm is one of the most effective methods.
Jianjun Ni   +3 more
doaj   +1 more source

Geometric Coplanar Constraints-Aided Autonomous Celestial Navigation for Spacecraft in Deep Space Exploration

open access: yesIEEE Access, 2019
Autonomous celestial navigation has been exploited for orbit determination of deep space exploration. Geometric constraints in celestial measurement are the inherent attributes in actual comprehensive autonomous celestial navigation physical systems ...
Xin Ma, Xiaolin Ning, Xiao Chen, Jin Liu
doaj   +1 more source

Symbolic Constraints in Constructive Geometric Constraint Solving

open access: yesJournal of Symbolic Computation, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Christoph M. Hoffmann   +1 more
openaire   +3 more sources

Few-Shot Learning With Geometric Constraints [PDF]

open access: yesIEEE Transactions on Neural Networks and Learning Systems, 2020
In this article, we consider the problem of few-shot learning for classification. We assume a network trained for base categories with a large number of training examples, and we aim to add novel categories to it that have only a few, e.g., one or five, training examples.
Honggyu Jung, Seong-Whan Lee
openaire   +4 more sources

Geometrical constraints on dark energy [PDF]

open access: yesAstronomy & Astrophysics, 2005
We explore the recently introduced statefinder parameters. After reviewing their basic properties, we calculate the statefinder parameters for a variety of cosmological models, and investigate their usefulness as a means of theoretical classification of dark energy models. We then go on to consider their use in obtaining constraints on dark energy from
Evans, A. K. D.   +3 more
openaire   +2 more sources

A review on geometric constraint solving

open access: yesCoRR, 2022
version 2.
Zhihong Tang   +5 more
openaire   +3 more sources

Guaranteed Pursuit and Evasion Times in a Differential Game for an Infinite System in Hilbert Space l2

open access: yesMathematics, 2023
The present paper is devoted to studying a pursuit differential game described by an infinite system of binary differential equations in Hilbert space l2. The control parameters of the players are subject to geometric constraints.
Gafurjan Ibragimov   +3 more
doaj   +1 more source

Virtual nonholonomic constraints: A geometric approach

open access: yesAutomatica, 2023
Virtual constraints are invariant relations imposed on a control system via feedback as opposed to real physical constraints acting on the system. Nonholonomic systems are mechanical systems with non-integrable constraints on the velocities. In this work, we introduce the notion of virtual nonholonomic constraints in a geometric framework.
Alexandre Anahory Simoes   +3 more
openaire   +4 more sources

Geometric Constraint of an Evolved Deployable Ball Mechanism

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2011
This paper presents a novel method based on the virtual sliders for constructing a deployable ball mechanism and reveals the geometric constraint of the 20-bar ball mechanism and the radially foldable linkage that were extracted from the Hoberman switch ...
Guowu WEI, Xilun DING, Jian Sheng DAI
doaj   +1 more source

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