Results 71 to 80 of about 13,243,241 (294)
Parametric conditions and exact solution for the Duffing-Van der Pol class of equations
Vietnam Journal of Mechanics, 2018 This paper presents a methodology to find the exact solution and respective parametric conditions to the Duffing-Van der Pol class of equations. The supposed method in this paper is different from the Prelle and Singer method and the Lie symmetry method.
Dao Huy Bich, Nguyen Dang Bich
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Accounting for animal health in efficiency analysis: An application to Swedish dairy farms
American Journal of Agricultural Economics, EarlyView.Abstract Poor animal health is a central concern in modern livestock production. Despite the necessity to incorporate animal health in efficiency analysis, the theoretical and empirical developments are limited on this subject. This article appropriately characterizes the axiomatic properties of animal health within a production framework.
Frederic Ang +3 more
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PENYELESAIAN PERSAMAAN DIFERENSIAL BIASA NON LINIER MENGGUNAKAN METODE DEKOMPOSISI ADOMIAN
MEJ (Mathematics Education Journal), 2017 The Bernoulli ...
Hanna - Fitriana
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Food inflation pass‐through from agricultural imports in a small open economy
American Journal of Agricultural Economics, EarlyView.Abstract This paper develops a new framework for quantifying cost pass‐through in a small open economy by estimating firm‐level markup responses to agricultural import price shocks. We show theoretically that markup adjustments depend on firms' reliance on imported inputs and demand curvature, generating heterogeneous inflationary effects across firm ...
Minseong Kang, Seungki Lee
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Solutions of the Force-Free Duffing-van der Pol Oscillator Equation
International Journal of Differential Equations, 2011 A new approximate method for solving the nonlinear Duffing-van der pol oscillator equation is proposed. The proposed scheme depends only on the two components of homotopy series, the Laplace transformation and, the Padé approximants.
Najeeb Alam Khan +3 more
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Study of fractional order Van der Pol equation [PDF]
, 2016 In this article, Homotopy analysis method is successfully used to find the approximate solution of fractional order Van der Pol equation. The fractional derivative is described in the Caputo sense.The numerical computations of convergence control ...
Jafari, H. +3 more
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Food insecurity and unemployment among immigrants in the United States
American Journal of Agricultural Economics, EarlyView.Abstract Immigrants can be more vulnerable to economic downturns and, during periods of economic hardship, more likely to experience food insecurity compared to natives. This study examines the differential effect of the unemployment rate on the probability of being food insecure among diverse groups of immigrant households relative to natives in the ...
Siwen Zhou +3 more
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Oscillations in a van der Pol equation with delayed argument [PDF]
, 2002 We consider the van der Pol equation d2dt2u(t)−εddtu(t)+εu2(t−r)ddtu(t−r)+u(t)=0 with the delayed time r, where r and ε are real parameters, with ε>0 small and 0 ...
J.C.F. de Oliveira, de Oliveira, J.C.F.
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American 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
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