Results 11 to 20 of about 37,597 (261)
A GNSS-based method to define athlete manoeuvrability in field-based team sports.
PLoS ONE, 2021 This study presented a method of quantifying the manoeuvrability of two field-based team sport athletes and investigated its relationship with running velocity during competition.
Grant Malcolm Duthie +2 more
doaj +2 more sources
Factorization of supersymmetric Hamiltonians in curvilinear coordinates [PDF]
, 2012 Planar supersymmetric quantum mechanical systems with separable spectral problem in curvilinear coordinates are analyzed in full generality. We explicitly construct the supersymmetric extension of the Euler/Pauli Hamiltonian describing the motion of a ...
Alonso Izquierdo A +7 more
core +2 more sources
Explicit factorization of external coordinates in constrained Statistical Mechanics models [PDF]
, 2006 If a macromolecule is described by curvilinear coordinates or rigid constraints are imposed, the equilibrium probability density that must be sampled in Monte Carlo simulations includes the determinants of different mass-metric tensors.
Abagyan +62 more
core +3 more sources
Intramolecular dynamics. I. Curvilinear normal modes, local modes, molecular anharmonic Hamiltonian, and application to benzene [PDF]
, 1991 The Hamiltonian based on curvilinear normal modes and local modes (CNLM) is discussed using Wilson's exact vibrational Hamiltonian as basis, the CNLM representation diagonalizing only the normal mode block of FG matrix in curvilinear internal coordinates.
Klippenstein, Stephen J. +2 more
core +1 more source
DYNAMIC PROGRAMMING FOR CURVED REFLECTION SYMMETRY DETECTION IN SEGMENTED IMAGES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 This study proposes a method for detecting curved reflection symmetry in binary and grayscale images. The crucial step is to construct a curvilinear symmetry axis generating a nonlinear transformation of the image coordinates that projects the curve on ...
N. Lomov, O. Seredin
doaj +1 more source
Journal of High Energy Physics, 2021 We derive a general exact form of the phase space distribution function and the thermal expectation values of local operators for the free quantum scalar field at equilibrium with rotation and acceleration in flat space-time without solving field ...
F. Becattini, M. Buzzegoli, A. Palermo
doaj +1 more source
Anharmonic force field and vibrational frequencies of tetrafluoromethane (CF$_4$) and tetrafluorosilane (SiF$_4$) [PDF]
, 1999 Accurate quartic anharmonic force fields for CF$_4$ and SiF$_4$ have been calculated using the CCSD(T) method and basis sets of $spdf$ quality. Based on the {\it ab initio} force field with a minor empirical adjustment, the vibrational energy levels of ...
Edwin L. Sibert +4 more
core +2 more sources
Stresses and deformations of an eccentric cylindrical cam during hydro-joining [PDF]
MATEC Web of Conferences, 2021 The stresses and deformations of an eccentric cylindrical cam during the process of hydro-joining have been calculated in orthogonal curvilinear coordinates according to the mechanical model of the cam and governing equations in terms of appropriate ...
Wang Kelin +4 more
doaj +1 more source
A New Look at Linear (Non-?) Symplectic Ion Beam Optics in Magnets [PDF]
, 2013 We take a new look at the details of symplectic motion in solenoid and bending magnets and rederive known (but not always well-known) facts. We start with a comparison of the general Lagrangian and Hamiltonian formalism of the harmonic oscillator and ...
Baumgarten, C.
core +1 more source
Моделирование и анализ информационных систем, 2015 A version of the method of collocations and least residuals is proposed for the numerical solution of the Poisson equation in polar coordinates on non-uniform grids.
E. V. Vorozhtsov, V. P. Shapeev
doaj +1 more source