Results 71 to 80 of about 12,663 (185)

A Characterization of the Angle Defect and the Euler Characteristic in Dimension 2 [PDF]

open access: yesDiscrete & Computational Geometry, 2008
The ``Descartes-Gauss-Bonnet Theorem'' \(\sum_{v\in M} d(v,M) = 2\pi \chi(M)\) relates the curvature (angle defect or deficiency) \(d(v,M):=2\pi - \sum_{\alpha\ni v} \alpha\) at the vertices \(v\) of a triangulated polyhedral surface \(M\) to the Euler characteristic \(\chi(M)\) of \(M\).
openaire   +1 more source

Shuttle Program. Euler angles, quaternions, and transformation matrices working relationships

open access: yes, 1977
A brief mathematical development of the relationship between the Euler angles and the transformation matrix, the quaternion and the transformation matrix, and the Euler angles and the quaternion is presented.
Henderson, D. M.
core  

Euler angles, quaternions, and transformation matrices for space shuttle analysis

open access: yes, 1977
Relationships between the Euler angles and the transformation matrix, the quaternion and the transformation matrix, and the Euler angles and the quaternion are analyzed, and equations developed are applied directly to current space shuttle problems.
Henderson, D. M.
core  

Globographic visualisation of three dimensional joint angles

open access: yes
Three different methods for describing three dimensional joint angles are commonly used in biomechanics. The joint coordinate system and Cardan/Euler angles are conceptually quite different but are known to represent the same underlying mathematics. More
Baker, RJ
core   +1 more source

Orientlib: An R Package for Orientation Data

open access: yesJournal of Statistical Software, 2003
Orientlib is an R package to facilitate working with orientation data, i.e. elements of S O(3). It provides automatic translation between different representations of orientations, including rotation matrices, quaternions, Euler angles and skew-symmetric
Duncan Murdoch
doaj   +1 more source

Application of quaternion in visual simulation of rigid body motion

open access: yesJournal of Measurement Science and Instrumentation, 2017
In recent years,with the extensive applications of high performance computer and the rapid development of the attitude control of the spacecraft,quaternion theory has been widely used.Compared with Euler angles,quaternion not only is simple calculation ...
HUANG Jin-yang   +3 more
doaj  

Large deformation analysis of composite spatial curved beams with arbitrary undeformed configurations described by Euler angles with discontinuities and singularities

open access: yes, 2018
Based on Kirchhoff theory, governing equations of a spatial curved beam with an arbitrary undeformed configuration that undergoes large deformation are established in an arc-length coordinate system and axial extension of the beam is considered. Modified
Zhu, Weidong   +3 more
core   +1 more source

Wannier states in Euler angles coordinate basis

open access: yes, 2001
This work is devoted to calculate the doubly excited states in the two-electron atom. The electrons in two-electron atom are described by three inner coordinates and by three Euler angles giving rotation of the system as a whole.
Nikitin S. I., Abdelhay S. M.
core  

Advanced quaternion forward kinematics algorithm including overview of different methods for robot kinematics [PDF]

open access: yesFME Transactions, 2014
Formulation of proper and efficient algorithms for robot kinematics is essential for the analysis and design of serial manipulators. Kinematic modeling of manipulators is most often performed in Cartesian space.
Vidaković Jelena Z.   +4 more
doaj  

A Universal Formula for Extracting the Euler Angles

open access: yes, 2004
Recently, the authors completed a study of the Davenport angles, which are a generalization of the Euler angles for which the initial and final Euler axes need not be either mutually parallel or mutually perpendicular or even along the coordinate axes ...
Markley, F. Landis, Shuster, Malcolm D.
core  

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