Results 81 to 90 of about 875,864 (151)

Blow-up solutions for a nonlinear wave equation with porous acoustic boundary condition

open access: yesElectronic Journal of Differential Equations, 2013
We study a nonlinear wave equation with porous acoustic boundary conditions in a bounded domain. We prove a finite time blow-up for certain solutions with positive initial energy.
Shun-Tang Wu
doaj  

SARS-CoV-2 mutational cascades and the risk of hyper-exponential growth. [PDF]

open access: yesMicrob Pathog, 2021
Halley JM, Vokou D, Pappas G, Sainis I.
europepmc   +1 more source

Preparing Ukraine for the singularity era: economic and organizational strategies and the role of education

open access: yesЕкономіка, управління та адміністрування
The article examines the concept of integrated singularity as a period of interaction between technological, economic, demographic, and political singularities, posing global challenges.
V.V. Opanasiuk, S.M. Savytskyi
doaj   +1 more source

Bifurcation and multiplicity of solutions for the fractional Laplacian with critical exponential nonlinearity

open access: yesElectronic Journal of Differential Equations, 2016
We study the fractional elliptic equation $$\displaylines{ (-\Delta)^{1/2} u = \lambda u+|u|^{p-2}ue^{u^2} ,\quad\text{in } (-1,1),\cr u=0\quad\text{in } \mathbb{R}\setminus(-1,1), }$$ where $\lambda$ is a positive real parameter, p>2 and $(-\Delta)^
Pawan Kumar Mishra, Konijeti Sreenadh
doaj  

Exponential Growth Bias of Infectious Diseases: Protocol for a Systematic Review.

open access: yesJMIR Res Protoc, 2022
Berg SH   +4 more
europepmc   +1 more source

Exponential growth, high prevalence of SARS-CoV-2, and vaccine effectiveness associated with the Delta variant. [PDF]

open access: yesScience, 2021
Elliott P   +20 more
europepmc   +1 more source

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