Results 91 to 100 of about 537,351 (283)

Preferential trading in agriculture: New insights from a structural gravity analysis and machine learning

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Preferential trade agreements (PTAs) contain various non‐tariff provisions, yet identifying their trade effects remains challenging because these commitments are high‐dimensional and strongly correlated within agreements. We estimated a theory‐consistent structural gravity model with domestic flows for 26 agricultural subsectors over 1988–2017
Dongin Kim, Sandro Steinbach
wiley   +1 more source

A study of variational inequalities for set-valued mappings

open access: yesJournal of Inequalities and Applications, 1999
In this paper, Ky Fan's KKM mapping principle is used to establish the existence of solutions for simultaneous variational inequalities. By applying our earlier results together with Fan–Glicksberg fixed point theorem, we prove some existence ...
Tarafdar Enayet   +2 more
doaj  

Firm turnover under asymmetric information: Tanzania's agro‐dealer sector

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract We study firm turnover (i.e., entry and exit) and its consumer implications in a market characterized by asymmetric information. Using a three‐round census of agro‐dealers in Tanzania's Morogoro Region, we document annual firm entry and exit rates of 33% and 17%, respectively.
Alix Naugler   +3 more
wiley   +1 more source

Analysis of Quasistatic Frictional Contact Problem with Subdifferential Form, Unilateral Condition and Long-Term Memory

open access: yesInternational Journal of Analysis and Applications, 2020
We consider a quasistatic problem which models the contact between a deformable body and an obstacle called foundation. The material is assumed to have a viscoelastic behavior that we model with a constitutive law with long-term memory, thus at each ...
A. Ourahmoun, B. Bouderah, T. Serrar
doaj  

Numerical Analysis of Variational Inequalities

open access: yes, 1981
Numerical Analysis of Variational Inequalities.Revised translation of: Analyse numérique des inéquations variationelles.Includes bibliographical references (pages 767-776).Print version record.Front Cover; Numerical Analysis of Variational Inequalities;
Trémoli res, R   +5 more
core  

The effect of extreme wildfire exposure on energy poverty: Evidence from Australia's Black Saturday bushfires

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract This study assesses the effects of the 2009 Black Saturday Bushfires (BSB), which primarily occurred in rural regions of Victoria and represent the deadliest bushfire event in Australia's history, on household energy poverty. Using a linear panel event‐study, an entropy‐balanced event‐study, and a staggered difference‐in‐differences (DiD ...
Yitian Wang, Russell Smyth
wiley   +1 more source

The Existence of Maximum and Minimum Solutions to General Variational Inequalities in the Hilbert Lattices

open access: yesFixed Point Theory and Applications, 2011
We apply the variational characterization of the metric projection to prove some results about the solvability of general variational inequalities and the existence of maximum and minimum solutions to some general variational inequalities in the Hilbert
Yao Jen-Chih, Li Jinlu
doaj  

Existence and algorithm of solutions for generalized nonlinear variational-like inequalities

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
We introduce and study a new class of generalized nonlinear variational-like inequalities. Under suitable conditions, we prove the existence of solutions for the class of generalized nonlinear variational-like inequalities.
Zeqing Liu   +3 more
doaj   +1 more source

Generalized variational inequalities and associated nonlinear equations [PDF]

open access: yes, 1998
summary:Here we consider the solvability based on iterative algorithms of the generalized variational inequalities and associated nonlinear ...
Verma, Ram U., R.U. Verma
core   +1 more source

Internet use and adolescent development: A conceptual model integrating behavioral and contextual theories

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract In the digital era, adolescent development is deeply embedded in the cyber environment. Despite ongoing debate on the benefits and/or risks that Internet use brings to adolescents in empirical studies, conceptual and theoretical discussion on the influences of the intensity and modalities of Internet use is peripheral.
Linxiao Zhang   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy