Results 31 to 40 of about 2,522,381 (292)

General solutions of the Laplace equation

open access: yesPartial Differential Equations in Applied Mathematics, 2022
With the purpose of concisely and effectively obtaining the general or exact solutions of partial differential equations (PDEs), we put forward some universal Z1transformations in present paper.
Hong Lai Zhu
doaj   +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

Analytical and Numerical Investigation for the Inhomogeneous Pantograph Equation

open access: yesAxioms
This paper investigates the inhomogeneous version of the pantograph equation. The current model includes the exponential function as the inhomogeneous part of the pantograph equation.
Faten Aldosari, Abdelhalim Ebaid
doaj   +1 more source

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

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 Static Cylindrical Solution to Conformal Weyl Gravity [PDF]

open access: yes, 2012
We present the exact exterior solution for a static and neutral cylindrically symmetric source in locally conformal invariant Weyl gravity. As a special case the general relativity analogue still can be attained, however only as a sub-family of solutions.
B. S. DeWitt   +3 more
core   +2 more sources

Exact solutions to supergravity [PDF]

open access: yesNuclear Physics B, 1997
18 pages, latex, uses a4.sty, no ...
openaire   +3 more sources

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 solution of a spin-ladder model

open access: yes, 1999
An integrable spin-ladder model with nearest-neighbor exchanges and biquadratic interactions is proposed. With the Bethe ansatz solutions of the model hamiltonian, it is found that there are three possible phases in the ground state, i.e., a rung ...
A. A. Nersesyan   +28 more
core   +1 more source

The HIT Network for Children and Adolescents With CNS Tumors Facilitates Improvements of Diagnostic Assessments, Multimodal Treatments, Individual Counseling, and Research in Germany, Austria, and Switzerland

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background The HIT network was established in 2000 to create a population‐based structure aiming to improve survival rates and reduce late effects for children with central nervous system (CNS) tumors by conducting comprehensive clinical trials.
Stefan Rutkowski   +59 more
wiley   +1 more source

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