Results 51 to 60 of about 2,484,606 (341)

An inductive method of calculation of the deflection of the truss regular type

open access: yesArchitecture and Engineering, 2016
In this paper, the author proposes a regular option of statically determinate flat truss with a lattice of Shukhov's type working under beam scheme. By induction, using Maple computer algebra system, the exact formula for the mid-span deflection under ...
Mikhail Kirsanov
doaj   +1 more source

Degenerate Landau-Zener model: Exact analytical solution

open access: yes, 2009
The exact analytical solution of the degenerate Landau-Zener model, wherein two bands of degenerate energies cross in time, is presented. The solution is derived by using the Morris-Shore transformation, which reduces the fully coupled system to a set of
B. W. Shore   +11 more
core   +1 more source

An Exact Solution of BPS Domain Wall Junction [PDF]

open access: yes, 1999
An exact solution of domain wall junction is obtained in a four-dimensional N=1 supersymmetric U(1) X U(1)' gauge theory with three pairs of chiral superfields which is motivated by the N=2 SU(2) gauge theory with one flavor perturbed by an adjoint ...
Ito, Kenji   +3 more
core   +2 more sources

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

open access: yesPopulation Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Exact solution of the Susceptible–Infectious–Recovered–Deceased (SIRD) epidemic model

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2022
Exact solution of the Susceptible-Infectious-Recovered-Deceased (SIRD) epidemic model is established, and various properties of solution are derived directly from the exact solution.
Norio Yoshida
doaj   +1 more source

Exact perturbative solution of the Kondo problem

open access: yes, 1995
We explicitly evaluate the infinite series of integrals that appears in the "Anderson-Yuval" reformulation of the anisotropic Kondo problem in terms of a one-dimensional Coulomb gas.
A. Schmid   +21 more
core   +1 more source

Exact solution of inflationary model with minimum length [PDF]

open access: yes, 2006
Within the inflationary scenario, Planck scale physics should have affected the comoving modes' initial conditions and early evolution, thereby potentially affecting the inflationary predictions for the cosmic microwave background (CMB).
Kempf, Achim, Lorenz, Larissa
core   +3 more sources

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

open access: yesPopulation Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Analytical exact solution of telegraph equation using HPM

open access: yesBibechana, 2016
In this paper, exact solutions of different variants of second order hyperbolic telegraph equation are investigated with Homotopy Perturbation Method (HPM).
Jamshad Ahmad, Ghulam Mohiuddin
doaj   +2 more sources

Exact solution for the nonlinear pendulum

open access: yesRevista Brasileira de Ensino de Física
This paper deals with the nonlinear oscillation of a simple pendulum and presents not only the exact formula for the period but also the exact expression of the angular displacement as a function of the time, the amplitude of oscillations and the angular
A. Beléndez   +4 more
doaj   +1 more source

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