Results 51 to 60 of about 1,939,111 (241)

Generalized angle vectors, geometric lattices, and flag-angles

open access: yes, 2021
Interior and exterior angle vectors of polytopes capture curvature information at faces of all dimensions and can be seen as metric variants of $f$-vectors.
Backman, Spencer   +2 more
core  

Twisted rods, helices and buckling solutions in three dimensions [PDF]

open access: yes, 2013
The study of slender elastic structures is an archetypical problem in continuum mechanics, dynamical systems and bifurcation theory, with a rich history dating back to Euler's seminal work in the 18th century.
Majumdar, Apala, Raisch, Alexander
core   +3 more sources

METHOD FOR PLANNING THE OPTIMAL TRAJECTORY OF A THREE-LINK MANIPULATOR IN TRIDIMENSIONAL SPACE WITH AN OBSTACLE

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2018
Objectives. The method for planning the optimal trajectory of a three-link manipulator with 7 degrees of mobility in a tridimensional space containing an obstacle specified by an array of points of three-dimensional space and represented in the form of a
V. O. Antonov   +3 more
doaj   +1 more source

Development of a simple force prediction model and consistency assessment of knee movements in ten-pin bowling [PDF]

open access: yesMaejo International Journal of Science and Technology, 2012
The aim of this research is to use LabVIEW to help bowlers understand theirjoint movements, forces acting on their joints, and the consistency of their knee movements while competing in ten-pin bowling.
Li-Cheng Hsieh
doaj  

An Amplitude-Phase Representation of the North-East-Down Kinematic Differential Equations

open access: yesIEEE Access, 2023
The overall goal of the paper is to derive a kinematic model for vehicle path-following systems, where the pitch and yaw angles $(\theta, \psi)$ together with the surge velocity $u$ can be treated as control inputs. Then the outer control loop can be
Thor I. Fossen
doaj   +1 more source

Tracking the precession of compact binaries from their gravitational-wave signal [PDF]

open access: yes, 2010
We present a simple method to track the precession of a black-hole-binary system, using only information from the gravitational-wave (GW) signal.
Ajith, P.   +3 more
core   +2 more sources

Robot sensor failure detection system based on convolutional neural networks for calculation of Euler angles [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2020
In this work, we present a failure detection system in sensors of any robot. It is based on the k-fold cross-validation approach and built from N neural networks, where N is the number of signals read from sensors.
A. Świetlicka, K. Kolanowski
doaj   +1 more source

Flat Foldings of Plane Graphs with Prescribed Angles and Edge Lengths [PDF]

open access: yes, 2018
When can a plane graph with prescribed edge lengths and prescribed angles (from among $\{0,180^\circ, 360^\circ$\}) be folded flat to lie in an infinitesimally thin line, without crossings?
Abel, Zachary   +5 more
core   +2 more sources

A method for measuring the micro-texture information based on transmission electron microscopy

open access: yesJournal of Materials Research and Technology, 2020
Conventional SEM-based micro-texture technique has attracted broad interests in recent years. There is also an important need to develop TEM based micro-texture methods, since it was expected to back up some of the shortages of conventional micro-texture
Zhen Zhang   +5 more
doaj   +1 more source

Adjusting unit cell three-dimensional posture and mirror array: A novel lattice structure design approach

open access: yesMaterials & Design, 2022
Lattice structures’ performance is directly determined by the topological structure and arrangement of cells. Here, we propose a lattice structure design approach that generates predictable mechanical properties by adjusting the three-dimensional posture
Xiaohong Chen   +8 more
doaj   +1 more source

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