Results 61 to 70 of about 10,608 (327)
Coupled Clustering in Hierarchical Matrices for the Oseen Problem
International Journal for Numerical Methods in Fluids, EarlyView.Fluid flow problems can be modelled by the Navier‐Stokes or, after linearization, by the Oseen equations. Their discretization results in linear systems in saddle point form which are typically very large and need to be solved iteratively. We propose a novel block structure for hierarchical matrices which is then used to build preconditioners for the ...
Jonas Grams, Sabine Le Borne
wiley +1 more source
On iterative methods and implicit-factorization preconditioners for regularized saddle-point systems
, 2005 We consider conjugate-gradient like methods for solving block symmetric indefinite linear systems that arise from saddle point problems or, in particular, regularizations thereof. Such methods require preconditioners that preserve certain sub-blocks from the original systems but allow considerable flexibility for the remaining blocks.
Dollar, H +3 more
openaire +4 more sources
Human Resource Management, EarlyView.ABSTRACT The aging workforce demands evidence‐based human resource practices that lengthen working lives. Building on the Conservation of Resources theory (Hobfoll 1989), we investigate which organizational practices are indispensable for expanding older workers' occupational future time perspective (OFTP)—people's perceived opportunities and remaining
Eduardo Oliveira +11 more
wiley +1 more source
Fast Mid‐Infrared Spectral Probe Decisions Match H&E Stain Results for Keratinocytic Carcinoma
Journal of Biophotonics, EarlyView.A handheld and fast mid‐infrared fiber‐optic spectral probe is touched to tissue recording a mid‐infrared spectrum that can distinguish keratinocytic cancer from normal skin. ABSTRACT We designed a handheld and fast mid‐infrared fiber‐optic spectral probe using a quantum cascade laser (QCL) and a reduced range of wavelengths, to see if keratinocytic ...
Rebecca C. Bradley +5 more
wiley +1 more source
Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.ABSTRACT The ability of organisms to effectively respond to challenges is critical for survival. We investigated how an acute stressor affected corticosterone, mitochondrial function, and DNA oxidative damage in a wild population of Leach's storm‐petrels (Hydrobates leucorhous).
Kayla E. Lichtner +10 more
wiley +1 more source
Strategic Change, EarlyView.ABSTRACT Digital platform (DP) enterprises have risen to the top of the global economy by inverting traditional business models. They earn money through matchmaking, transaction facilitation, and efficient orchestration of other stakeholders' resources.
Lukas R. G. Fitz, Jochen Scheeg
wiley +1 more source
Applied Mathematics, 2020 Explicit Exact and Approximate Inverse Preconditioners for solving complex linear systems are introduced. A class of general iterative methods of second order is presented and the selection of iterative parameters is discussed. The second order iterative methods behave quite similar to first order methods and the development of efficient ...
openaire +2 more sources
Managerial and Decision Economics, EarlyView.ABSTRACT Strategists who must identify issues in uncertain environments while being cognitively constrained can increasingly rely on artificial intelligence to manage uncertainty. The potential for AI to be incorporated into strategy processes has led to a debate about the evolving collaborative relationship between strategists and AI.
Thomas Hutzschenreuter +2 more
wiley +1 more source
Optimal Control Applications and Methods, EarlyView.Optimal control combines state and adjoint equations, which yield the state (x$$ x $$) and adjoint (lambda) variables as a function of the control variables (u$$ u $$). This structure allows us to design strategies for iteratively updating the control variable, based on conjugate gradient (CG) or GMRES algorithms.
N. Armengou‐Riera +4 more
wiley +1 more source