Results 41 to 50 of about 547,161 (285)
On the Expediency and Possibilities of Approximating a Pure Delay Link
Информатика и автоматизация, 2022 When solving problems of controlling an object with delay, it is often necessary to approximate a pure delay link with a minimum phase link in order to ensure the possibility of using analytical methods for regulator design.
Vadim Zhmud +5 more
doaj +1 more source
, 2014 A new sampling methodology based on incomplete cosine expansion series is presented as an alternative to the traditional sinc function approach. Numerical integration shows that this methodology is efficient and practical.
Abrarov, S. M., Quine, B. M.
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Adiabatic series expansion and higher-order semiclassical approximations in scattering theory [PDF]
Journal of Physics A: Mathematical and Theoretical, 2014 The scattering properties of any complex scattering potential, v:R -> C, can be obtained from the dynamics of a particular non-unitary two-level quantum system S_v. The application of the adiabatic approximation to S_v yields a semiclassical treatment of the scattering problem.
openaire +5 more sources
Uniqueness, Born Approximation, and Numerical Methods for Diffuse Optical Tomography
Journal of Applied Mathematics, 2013 Diffuse optical tomogrpahy (DOT) is to find optical coefficients of tissue using near infrared light. DOT as an inverse problem is described and the studies about unique determination of optical coefficients are summarized. If a priori information of the
Kiwoon Kwon
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Computation of the inverse Laplace Transform based on a Collocation method which uses only real values [PDF]
, 2007 We develop a numerical algorithm for inverting a Laplace transform (LT), based on Laguerre polynomial series expansion of the inverse function under the assumption that the LT is known on the real axis only.
A. MurliI +3 more
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Approximation orders of formal Laurent series by β-expansions
Finite Fields and Their Applications, 2008 Let \(\mathbb F\) be a finite field of \(q\) elements. Let \(\mathbb F((X^{-1}))\) be the field of formal Laurent series \[ \left\{\sum_{n=n_0}^\infty a_n X^{-n}\mid a_n\in\mathbb F, n_0\in\mathbb Z\right\}. \] Let \(\beta\in\mathbb F((X^{-1}))\) with \(\|\beta\|>1\). The \(\beta\)-expansion of \(x\in\mathbb F((X^{-1}))\), \(\|x\|
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Host movement, transmission hot spots, and vector-borne disease dynamics on spatial networks
Infectious Disease Modelling, 2022 We examine how spatial heterogeneity combines with mobility network structure to influence vector-borne disease dynamics. Specifically, we consider a Ross-Macdonald-type disease model on n spatial locations that are coupled by host movement on a strongly
Omar Saucedo, Joseph H. Tien
doaj +1 more source
Asymptotic enumeration of magic series [PDF]
, 2013 A magic series is a set of natural numbers that, by virtue of its size, sum, and maximum value, could fill a row of a normal magic square. In this paper, we derive an exact two-dimensional integral representation for the number of magic series of order N.
Quist, Michael
core
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source