Results 121 to 130 of about 7,652,103 (218)

Mathematical Modeling of Population Growth Prediction Until 2041 in Iran [PDF]

open access: yesMajallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Īlām
Introduction:  It is unlikely that the population growth rate has stayed steady in recent years, given the present situation in Iran. There has been a slight rise in population growth over the past 60 years, according to birth, mortality, and census ...
Ali Ehsani   +2 more
doaj  

Exponential growth of Betti numbers

open access: yes, 1998
We prove over some local commutative noetherian rings that the sequence of Betti numbers of every finitely generated module is either eventually constant or has termwise exponential ...
Peeva, Irena
core   +1 more source

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  

Size Distributions for All Cities: Lognormal and q-exponential functions [PDF]

open access: yes
This paper analyses in detail the features offered by a function which is practically new to Urban Economics, the q-exponential, in describing city size distributions. We highlight two contributions.
Rafael González-Val   +2 more
core  

Exponential Growth Bias and Household Finance

open access: yes
Exponential growth bias is the pervasive tendency to linearize exponential functions when assessing them intuitively. We show that exponential growth bias can explain two stylized facts in household finance: the tendency to underestimate an interest rate
VICTOR STANGO, JONATHAN ZINMAN
core   +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

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

Significant Feedbacks in Firm Growth and Market Structure [PDF]

open access: yes
There are some markets where the growth of firms are held to be subject to diminishing returns, or negative feedbacks; and there are other markets where firm growth is believed to be subject to increasing returns, or positive feedbacks.
Paul A Kattuman, Alexandru Chirmiciu
core  

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  

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