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An adjoint formulation is used to relate the estimated functional error to the local residual errors of both the primal and adjoint solutions.
This is achieved by observing variation in a functional of the solution as the level of dissipation is varied, and it is deduced for certain test-cases that the dissipation alone accounts for the majority of the functional error.
In this paper, we develop an adjoint-based h-adaptation approach based on the high-order correction procedure via reconstruction formulation (CPR) to minimize the output or functional error.
At the time of peak snowpack accumulation in 2002, differences between modeled and measured SWE at the pixel scale were apportioned into three potential components: field sampling error (∼22%), parameter mapping error (∼27%), and actual model functional error (∼51%).
Since the present study controlled for sampling and mapping error, clear priorities could be identified for reducing model functional error, including improvement of sub-models for snow interception, and snowpack thermal dynamics.
Similar(55)
Functional errors in analog portion of mixed signal circuits become more severe and improvements in verification methods are increasingly important.
Tolerance envelopes are useful in many design tasks such as quantifying functional errors, identifying unexpected part collisions, and determining device assemblability.
Afterward, each circuit hardened has been evaluated by SEU Simulation, and the multi-objective optimization technology is introduced to optimize the area overhead and the number of functional errors of all the circuits.
Not that overcomplication is the only cause of bad design — sadly there are countless other contenders, from environmental irresponsibility to functional errors — but it is among the most common factors, and not just for the old-fashioned reasons that forced the mayor in "Boss" to wash his bed sheets by hand.
When the modeling errors are available, the indirect backstepping control is proposed, which can guarantee the functional approximation error will converge to a rather small neighborhood of the minimax functional approximation error.
Super-convergent functional and error estimate for the output with the CPR method are obtained.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com