Results 1 to 10 of about 152,912 (263)

The Transmission Dynamics of a Compartmental Epidemic Model for COVID-19 with the Asymptomatic Population via Closed-Form Solutions [PDF]

open access: yesVaccines, 2022
Unlike previous viral diseases, COVID-19 has an “asymptomatic” group that has no symptoms but can still spread the disease to others at the same rate as symptomatic patients who are infected. In the literature, the mass action or standard incidence rates
Rehana Naz, Mariano Torrisi
doaj   +4 more sources

Finding the closed-form solutions of dissipative oscillatory systems [PDF]

open access: yesScientific Reports, 2022
This paper shows how to use the approximate Hamiltonian approach for the non-conservative system not capable of possessing Hamiltonian. Using the approximate Hamiltonian method for a non-conservative system is not possible in general. We propose a way to
Saba Irum, Imran Naeem
doaj   +2 more sources

Epigenetic pacemaker: closed form algebraic solutions [PDF]

open access: yesBMC Genomics, 2020
Background DNA methylation is widely used as a biomarker in crucial medical applications as well as for human age prediction of very high accuracy. This biomarker is based on the methylation status of several hundred CpG sites.
Sagi Snir
doaj   +3 more sources

The closed form solutions of simplified MCH equation and third extended fifth order nonlinear equation

open access: yesPropulsion and Power Research, 2019
The investigation of closed form solutions for nonlinear evolution equations (NLEEs) is being an attractive subject in the different branches of mathematical and physical sciences. In this article, the enhanced (G′/G)-expansion method has been applied to
A.K.M. Kazi Sazzad Hossain   +2 more
doaj   +3 more sources

Unsteady Magnetohydrodynamics PDE of Monge–Ampère Type: Symmetries, Closed-Form Solutions, and Reductions

open access: yesMathematics
The paper studies an unsteady equation with quadratic nonlinearity in second derivatives, that occurs in electron magnetohydrodynamics. In mathematics, such PDEs are referred to as parabolic Monge–Ampère equations.
Andrei D. Polyanin, Alexander V. Aksenov
doaj   +3 more sources

Closed-Form Solutions to a Forced Damped Rotational Pendulum Oscillator

open access: yesMathematics, 2022
In this investigation, some analytical solutions to both conserved and non-conserved rotational pendulum systems are reported. The exact solution to the conserved oscillator (unforced, undamped rotational pendulum oscillator), is derived in the form of a
Alvaro H. Salas   +4 more
doaj   +1 more source

On Ramsey Dynamical Model and Closed-Form Solutions [PDF]

open access: yesJournal of Nonlinear Mathematical Physics, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
POLAT, GÜLDEN GÜN, Özer, Teoman
openaire   +4 more sources

A Closed-Form Solution to HZE Propagation [PDF]

open access: yesRadiation Research, 1990
An analytic solution for high-energy heavy ion transport assuming straight-ahead and velocity-conserving interactions with constant nuclear cross-reactions is given in terms of a Green's function. The series solution for the Green's function is rapidly convergent for most practical applications.
J W, Wilson   +3 more
openaire   +2 more sources

Generalized Exp-Function Method to Find Closed Form Solutions of Nonlinear Dispersive Modified Benjamin–Bona–Mahony Equation Defined by Seismic Sea Waves

open access: yesMathematics, 2022
Using the new generalized exp-function method, we were able to derive significant novel closed form solutions to the nonlinear dispersive modified Benjamin–Bona–Mahony (DMBBM) equation. The general framework of the new generalized exp-function method has
Muhammad Shakeel   +4 more
doaj   +1 more source

Design of Thin and Wideband Microwave Absorbers Using General Closed-Form Solutions [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2021
A new design method for RLC reactive absorbers is presented. This method is based on closed-form solutions to help realize the widest absorption bandwidth for an arbitrarily specified thickness. The solutions for the RLC values of the reactive screen are
Myungwan Lyou, Gunyoung Kim, Bomson Lee
doaj   +1 more source

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