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FGMRES preconditioning by symmetric/skew-symmetric decomposition of generalized stokes problems

De Cecchis, Dany; López, Hilda; Molina, Brígida - In: Mathematics and Computers in Simulation (MATCOM) 79 (2009) 6, pp. 1862-1877

Krylov methods with and without preconditioning. Numerical experiments with different meshes are presented as well as … comparisons between the methods considered. The results suggest that FGMRES and a preconditioning technique based on symmetric …

Persistent link: https://www.econbiz.de/10011051224

Factors Affecting Preconditioned Calf Price Differentials: How much do Market and Sale Conditions Matter?

Schulz, Lee L.; Dhuyvetter, Kevin C.; Doran, Beth - Agricultural and Applied Economics Association - AAEA - 2014

Feeder calf prices are determined by the interaction of many factors. This study uses transactions data from Iowa preconditioned and regular feeder calf auction sales to investigate the impact of a wide variety of factors, many of which have not been used in previous studies on feeder calf...

Persistent link: https://www.econbiz.de/10011069110

Cost and Benefit Analysis of a Preconditioning Feeder Calf Program

Donnell, Jeri; Ward, Clement E. - Western Agricultural Economics Association - WAEA - 2008

Objectives were twofold: Determine key factors influencing preconditioning cost and returns; and determine the premium … Noble Foundation show preconditioning returns depend significantly on number of days preconditioned, average daily gain, and …

Persistent link: https://www.econbiz.de/10005477272

Notes on a 3-term Conjugacy Recurrence for the Iterative Solution of Symmetric Linear Systems

Fasano, Giovanni - Dipartimento di Matematica Applicata, Università Ca' … - 2008

[10]. We prove the finite convergence of CG_2step, and we provide some error analysis. Then, we introduce preconditioning …

Persistent link: https://www.econbiz.de/10005566307

A necessary and sufficient convergence condition of orthomin(k) methods for least squares problem with weight

Zhang, Shao; Oyanagi, Yoshio - In: Annals of the Institute of Statistical Mathematics 42 (1990) 4, pp. 805-811

Persistent link: https://www.econbiz.de/10005760367