Results 111 to 120 of about 2,648,464 (290)

Highly stable two step collocation methods for stiff differential systems

open access: yes, 2009
12th Seminar "NUMDIFF" on Numerical Solution of Differential and Differential-Algebraic ...
D'AMBROSIO, RAFFAELE   +1 more
core  

Farm labor scarcity and its uneven impacts on crop producers in the United States

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract This study is the first to evaluate the impacts of farm labor scarcity on producers in the United States across different crop production systems. Between 2002 and 2017, we disentangle the effects of labor scarcity from the impacts of rising commodity demand, technological change, and supply of other inputs on labor market outcomes.
Srabashi Ray   +4 more
wiley   +1 more source

Exchange effects in composite-particle interaction

open access: yesEPJ Web of Conferences, 2012
Algebraic version of the orthogonality conditions model is developed by analogy with the algebraic version of the resonating group model. It is shown that all exchange terms excluding ones originated by the exchange kernel of the potential energy can be ...
Tchuvil’sky Yu. M., Igashov S. Yu.
doaj   +1 more source

Computing all integer solutions of a genus 1 equation [PDF]

open access: yes
The Elliptic Logarithm Method has been applied with great successto the problem of computing all integer solutions of equations ofdegree 3 and 4 defining elliptic curves. We extend this methodto include any equation f(u,v)=0 that defines a curve of genus
Stroeker, R.J., Tzanakis, N.
core  

Toward a Behavioral Reserve Model in Amyotrophic Lateral Sclerosis

open access: yesAnnals of Neurology, EarlyView.
Objective Behavioral impairment is common in amyotrophic lateral sclerosis (ALS) and strongly affects autonomy, caregiver burden, and outcomes, yet predictors of vulnerability remain unclear. We investigated whether premorbid regulatory traits and socio‐educational exposures are associated with behavioral phenotypes in ALS within a behavioral reserve ...
Francesca Palumbo   +14 more
wiley   +1 more source

Grobner Bases for Nonlinear DAE Systems of Analog Circuits [PDF]

open access: yesComputer Science Journal of Moldova, 2008
Systems of differential equations play an important role in modelling and analysis of many complex systems e.g. in electronics and mechanics. The following article is concerned with a symbolic analysis approach for reduction of the differential index of ...
Silke J. Spang
doaj  

Research on Heat Transfer Enhancement of Spiral Grooved Tube Heat Exchangers Based on CFD and Artificial Intelligence

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Driven by the energy crisis and carbon neutrality goals, high‐efficiency heat exchange equipment has become a core demand in the industrial sector. The spiral grooved double‐pipe heat exchanger exhibits significant heat transfer enhancement advantages, yet it requires balancing heat transfer efficiency and pressure loss.
Yueyun Yang, Wei Li, Xiuzhi Xi, Neng Gao
wiley   +1 more source

Berlin seminar on differential-algebraic equations Seminar notes

open access: yes, 1992
Differential algebraic equations (DAE) have developed into a highly topical subject of applied mathematics during the last decade. Condensed representations of important aspects regarding the theory and the numerical treatment of DAEs were published in ...
Maerz, R. (eds.)   +3 more
core  

Solution of TheHypergeometrical Differential Equation and SomeDifferentialEquation Related IT [PDF]

open access: yes, 2017
In this research I discussed the hypergeometric Differential Equation and its various properties and how the second order named Ordinary Differential Equations can be obtained from it, such as: Bessel and Legendre Differential ...
Ahmed Mohamed Ishag Ahmed
core  

DIFFERENTIAL-ALGEBRAIC EQUATION FOR DECENTRALIZED SLIDING CONTROL METHOD

open access: yes, 2019
A Differential-Algebraic Equations (DAE) system is a system of equations that either contains differential equations and algebraic equations, or is equivalent to such a system.
Maddileti, Dr. Kuruva
core   +1 more source

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