Results 61 to 70 of about 227,595 (269)

New a posteriori error estimates for hp version of finite element methods of nonlinear parabolic optimal control problems

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we investigate residual-based a posteriori error estimates for the hp version of the finite element approximation of nonlinear parabolic optimal control problems.
Zuliang Lu   +3 more
doaj   +1 more source

Error Bounds for Approximation with Neural Networks

open access: yesJournal of Approximation Theory, 2001
The paper considers neural network approximations with shifts of so-called ridge functions \(\sigma(a_j^Tx+b_j)\). Linear combinations of such ridge functions correspond to a neural network with a single hidden layer. Of particular interest are the approximation orders that are obtainable with these approximations to functions from Sobolev spaces.
Martin Burger 0001, Andreas Neubauer
openaire   +3 more sources

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Efficient by Precision Algorithms for Approximating Functions from Some Classes by Fourier Series

open access: yesКібернетика та комп'ютерні технології
Introduction. The problem of approximation can be considered as the basis of computational methods, namely, the approximation of individual functions or classes of functions by functions that are in some sense simpler than the functions being ...
Olena Kolomys
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Optimal with Respect to Accuracy Recovery of Some Classes Functions by Fourier Series

open access: yesКібернетика та комп'ютерні технології
Introduction. Function approximation (approximation or restoration) is widely used in data analysis, model building, and forecasting. The goal of function approximation is to find the function that best approximates the original function.
Olena Kolomys
doaj   +1 more source

Learning Rates for -Regularized Kernel Classifiers

open access: yesJournal of Applied Mathematics, 2013
We consider a family of classification algorithms generated from a regularization kernel scheme associated with -regularizer and convex loss function. Our main purpose is to provide an explicit convergence rate for the excess misclassification error of ...
Hongzhi Tong   +2 more
doaj   +1 more source

Prospecting the protein design landscape

open access: yesFEBS Letters, EarlyView.
This review outlines the current state of various protein design approaches. We discuss the current possibilities enabled by recently released tools, highlight future avenues to pursue in protein design, and underscore the crucial role of key databases and resources for successful protein design workflows.
Jakob R. Riccabona   +4 more
wiley   +1 more source

The error in discrete Φ-approximation

open access: yesMathematical and Computer Modelling, 2001
Let \(\phi:\left[ 0,\infty\right) \to\left[ 0,\infty\right) \) be a convex function (\(\phi\left( 0\right) =0,\phi\left( x\right) >0\) for \(x>0\)) and \(\left( \Omega,\mathcal{A},\mu\right)\) a space with a finite measure \(\mu\), where \(\Omega={\mathbf N}\) or a finite part of \(\mathbf{N}\) and \(\mathcal{A}=2^{\Omega}\).
openaire   +2 more sources

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

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