Results 51 to 60 of about 938 (126)

Research of Mapping Visualization Among the Bennett Mechanism，Enveloping Hexahedron and J-hyperboloid of One Sheet

Jixie chuandong, 2021
Based on the enveloping hexahedron constructed by Bennett mechanism，the instantaneous relative position and orientation relation between the Bennett linkage configuration and the hyperboloid defined by its joint axis are derived.
Lele Bai, Lubin Hang
doaj  

Separation of Variables and Contractions on Two-Dimensional Hyperboloid

Symmetry, Integrability and Geometry: Methods and Applications, 2012
In this paper analytic contractions have been established in the R→∞ contraction limit for exactly solvable basis functions of the Helmholtz equation on the two-dimensional two-sheeted hyperboloid. As a consequence we present some new asymptotic formulae.
Ernie Kalnins, George S. Pogosyan, Alexander Yakhno   +2 more
doaj   +1 more source

Survey of time preference, delay discounting models [PDF]

Judgment and Decision Making, 2013
The paper surveys over twenty models of delay discounting (also known as temporal discounting, time preference, time discounting), that psychologists and economists have put forward to explain the way people actually trade off time and money.
John R. Doyle
doaj  

Hyperbolic Graph Wavelet Neural Network

Tsinghua Science and Technology
Graph neural networks (GNNs), grounded in spatial or spectral domains, have achieved remarkable success in learning graph representations in Euclidean space.
Wenjie Zheng, Guofeng Zhang, Xiaoran Zhao, Zhikang Feng, Lekang Song, Huaizhen Kou   +5 more
doaj   +1 more source

Some Formulas for Legendre Functions Induced by the Poisson Transform

Acta Polytechnica, 2011
Using the Poisson transform, which maps any homogeneous and infinitely differentiable function on a cone into a corresponding function on a hyperboloid, we derive some integral representations of the Legendre functions.
I. A. Shilin, A. I. Nizhnikov
doaj  

Simulation and Calculation of Assembly Error of Linear Ion Trap

Zhipu Xuebao
As the core part of the portable mass spectrometers, the ion trap mass analyzer is equivalent to the "engine", which determines the analytical capability of the mass spectrometer.
Xiao-long LI, Wei-min WANG, Fu-xing XU, Chuan-fan DING   +3 more
doaj   +1 more source

Theoretical model and verification of “analogous hyperbola (hyperboloid)” for the overall movement of mining rock strata: From two-dimensional “analogous hyperbola” to three-dimensional “analogous hyperboloid” models

Meitan xuebao
Coal mining can cause the deformation, fracture, and movement of overlying strata from bottom to top, leading to surface subsidence and other problems.
Jianping ZUO, Chengyi XU, Yunjiang SUN, Ying LI, Genshui WU, Meilu YU   +5 more
doaj   +1 more source

Extrapolating the massive fields to future timelike infinity

Journal of High Energy Physics
It is well-known that future timelike infinity (i +) in four-dimensional Minkowski spacetime is conformal to the unit three-dimensional hyperboloid (H 3).
Wen-Bin Liu, Jiang Long
doaj   +1 more source

Geodesics in the closed accelerating University

Қарағанды университетінің хабаршысы. Физика сериясы, 2017
The need to introduce in the current cosmological models, dark energy and dark matter raises the question of revision of the basic concepts of the structure of the Universe.
V.V. Arkhipov, T.M. Orymbay, P.A. Kisabekova   +2 more
doaj  

A note on the area of event horizon of Kleinian black hole

European Physical Journal C: Particles and Fields
We point out that the area of event horizon of Kleinian black hole is infinite due to the fact that its event horizon is not a sphere but a hyperboloid.
Tuan Q. Do
doaj   +1 more source