Results 111 to 120 of about 1,227,664 (287)

The economics of all‐year fresh food supply: Insights from Norwegian Salmon farming

Journal of the Agricultural and Applied Economics Association, EarlyView.
Abstract Year‐round availability of fresh foods such as blueberries, salmon, and asparagus has expanded rapidly due to advances in production and logistics since the turn of the century. We develop an equilibrium model for the competitive management of seasonally produced and continuously supplied fresh foods, deriving outcomes for price, harvest ...
Atle Oglend, Frank Asche, Tore Selland Kleppe, Bård Misund   +3 more
wiley   +1 more source

On the Dirichlet problem for a class of augmented Hessian equations

, 2015
In this paper, we consider the Dirichlet problem for a new class of augmented Hessian equations. Under sharp assumptions that the matrix function in the augmented Hessian is regular and there exists a smooth subsolution, we establish global second order ...
Yang, Xiao-Ping, Trudinger, Neil, Jiang, Feida   +2 more
core   +1 more source

Two Two‐Tier Stochastic Frontier Replications

Journal of Applied Econometrics, EarlyView.
ABSTRACT We replicate the two foundational studies which proposed the two‐tier stochastic frontier model, first in the cross‐sectional setting and then for the fixed effects panel data model. We explore matters of software then and now, different mathematical formulations of the likelihood, and alternative current software tools.
Alecos Papadopoulos, Christopher Parmeter   +1 more
wiley   +1 more source

An All‐At‐Once Solver for Visco‐Acoustic Full Waveform Inversion in the Time‐Domain

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Full waveform inversion (FWI) is the cutting‐edge seismic imaging technique used to reconstruct subsurface material properties such as wave velocities, mass density, and attenuation from measurements of reflected wavefields. In this article, we present the first implementation of FWI in the visco‐acoustic regime, based on a new time‐domain all‐
Christian Rheinbay, Andreas Rieder
wiley   +1 more source

Interior Estimates for Generalized Forchheimer Flows of Slightly Compressible Fluids

Advanced Nonlinear Studies, 2017
The generalized Forchheimer flows are studied for slightly compressible fluids in porous media with time-dependent Dirichlet boundary data for the pressure. No restrictions are imposed on the degree of the Forchheimer polynomial. We derive, for all time,
Hoang Luan T., Kieu Thinh T.
doaj   +1 more source

Home and away: allometry and climate drive morphology of European rabbits in their native and introduced range

Oikos, EarlyView.
Climatic conditions shape phenotypic evolution by driving adaptations that optimise organismal function. Invasive species provide valuable systems to study these processes, as they often encounter novel climatic conditions in their introduced ranges. The European rabbit Oryctolagus cuniculus, native to the Iberian Peninsula, has established populations
Rishab Pillai, Natasha Lee Hiotis, Christine Böhmer, Cécile Callou, Thomas J. Nelson, Irina Ruf, Thomas J. Sanger, Julia Schaar, Kévin Le Verger, Madeleine Geiger, Brian Kraatz, Emma Sherratt   +11 more
wiley   +1 more source

Caring with forests: Human and more‐than‐human care in forest occupations in Germany

People and Nature, EarlyView.
Abstract Drawing on ongoing ethnographic and participatory action research within forest occupations in Germany, this paper develops the concept of ‘caring with forests’ to theorise the mutual, multidimensional relationships of care that emerge between humans and more‐than‐human beings in environmental protest settings.
Sebastian Garbe
wiley   +1 more source

Interior Hessian estimates for sum Hessian quotient equation

Discrete and Continuous Dynamical Systems
This paper is devoted to the interior $C^2$ estimates for a class of sum Hessian quotient equations.
Ren, Changyu, Wang, Ziyi
openaire   +2 more sources

Data‐driven emulation of flow‐dependent background‐error variance in variational data assimilation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A machine‐learning approach is developed to emulate flow‐dependent background‐error variance within a variational data assimilation framework. The method reproduces uncertainty information that would normally require a 50‐member ensemble using only five members, while maintaining comparable observation fit and forecast performance.
Wei Pan, Massimo Bonavita, Marcin Chrust, Elías Hólm   +3 more
wiley   +1 more source

Lorentz estimates for asymptotically regular fully nonlinear elliptic equations

Electronic Journal of Differential Equations, 2017
We prove a global Lorentz estimate of the Hessian of strong solutions to a class of asymptotically regular fully nonlinear elliptic equations over a $C^{1,1}$ smooth bounded domain.
Yongyong Wang, Junjie Zhang, Shenzhou Zheng   +2 more
doaj