Results 111 to 120 of about 241,711 (290)

Coarsening phenomena in the network flow

open access: yesBruno Pini Mathematical Analysis Seminar
In this short note we summarize recent results on the asymptotic behaviour of the network flow and we give indications of an expected coarsening-type behaviour for the network flow past singularities.
Alessandra Pluda, Yoshihiro Tonegawa
doaj   +1 more source

Sustainable Productivity Growth in Agriculture: The Role of Shifts in R&D Investments and Technology

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT The objective of the paper is to evaluate the long‐term prospects of sustainable productivity growth linked to plausible assumptions on public agricultural R&D investments as the key productivity driver. Second, it investigates the role of changing R&D focus from yield maximization to input saving technologies (fertilizers and pesticides). The
Zuzana Smeets Křístková   +4 more
wiley   +1 more source

Remarks on the existence and decay of the nonlinear beam equation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
We will consider a class of nonlinear beam equation and we will prove the existence and decay weak ...
Jaime E. Mũnoz Rivera
doaj   +1 more source

Asymptotic coverage probabilities of bootstrap percentile confidence intervals for constrained parameters

open access: yes, 2017
The asymptotic behaviour of the commonly used bootstrap percentile confidence interval is investigated when the parameters are subject to linear inequality constraints. We concentrate on the important one- and two-sample problems with data generated from
Li, Pengfei   +2 more
core  

Do Tax Incentives for Farmland Leases Increase Farm Supply? Evidence From Iowa's Beginning Farmer Tax Credit

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT In recent decades, agriculture has become increasingly concentrated through horizontal mergers and acquisitions via corporate entities, and policy makers are concerned this will be exacerbated by the aging population of farm operators. To reduce market concentration in agriculture, many states have enacted policies to entice new prospective ...
Justin M. Ross   +2 more
wiley   +1 more source

Asymptotic formulas for solutions of parameter-depending elliptic boundary-value problems in domains with conical points

open access: yesElectronic Journal of Differential Equations, 2009
In this article, we study elliptic boundary-value problems, depending on a real parameter, in domains with conical points. We present asymptotic formulas for solutions near singular points, as linear combinations of special singular functions and ...
Nguyen Manh Hung, Nguyen Thanh Anh
doaj  

System of degenerate parabolic p-Laplacian

open access: yesOpen Mathematics
In this article, we study the mathematical properties of the solution u=(u1,…,uk){\bf{u}}=({u}^{1},\ldots ,{u}^{k}) to the degenerate parabolic system ut=∇⋅(∣∇u∣p−2∇u),(p>2).{{\bf{u}}}_{t}=\nabla \hspace{0.25em}\cdot \hspace{0.25em}({| \nabla {\bf{u}}| }^
Kim Sunghoon, Lee Ki-Ahm
doaj   +1 more source

On convergence and asymptotic behaviour of semigroups of operators. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2020
Bobrowski A, Rudnicki R.
europepmc   +1 more source

A Skills Gap Analysis of Farmer Directors of US Farmer Cooperatives

open access: yesAgribusiness, EarlyView.
ABSTRACT Boards of directors are vital to firm performance and are an integral part of the decision‐making process of any business. Several studies have been conducted that observe corporate or nonprofit board characteristics, skills, and the board's connection to firm performance.
Jody S. Herchenbach   +5 more
wiley   +1 more source

Oscillation and asymptotic behaviour of a higher order neutral differential equation with positive and negative coefficients

open access: yesElectronic Journal of Differential Equations, 2008
In this paper, we obtain necessary and sufficient conditions so that every solution of $$ ig(y(t)- p(t) y(r(t))ig)^{(n)}+ q(t)G( y(g(t)))-u(t)H(y(h(t))) = f(t) $$ oscillates or tends to zero as $t o infty$, where $n$ is an integer $n geq 2$, $q>0$
Radhanath Rath   +2 more
doaj  

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