Results 31 to 40 of about 2,188,866 (304)
Exact Asymptotic Stability Analysis and Region-of-Attraction Estimation for Nonlinear Systems
Abstract and Applied Analysis, 2013 We address the problem of asymptotic stability and region-of-attraction analysis of nonlinear dynamical systems. A hybrid symbolic-numeric method is presented to compute exact Lyapunov functions and exact estimates of regions of attraction of nonlinear ...
Min Wu, Zhengfeng Yang, Wang Lin
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Exact boundaries for the analytical approximate solution of a class of first-order nonlinear differential equations in the real domain [PDF]
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021 The paper gives a solution to one of the problems of the analytical approximate method for one class first order nonlinear differential equations with moving singular points in the real domain.
Viktor N. Orlov, Oleg A. Kovalchuk
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Special Properties of Plane Solenoidal Fields
Mathematics, 2021 Algebraic and integral identities have been obtained for a pair or a triple of plane solenoidal fields. We obtain sufficient potentiality conditions for a plane vector field. The integral identities are also important for exact a priori estimates.
Vladimir I. Semenov
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Exact versus estimated pruning of subject hierarchies [PDF]
Proceedings of the American Society for Information Science and Technology, 2013 AbstractMany large digital collections are organized by subject; these useful information organization structures are large and complex, thus difficult to browse. Current online tools and visualization prototypes show small localized subsets and do not provide the ability to explore the predominant patterns of the overall subject structure.
Julien, Charles-Antoine, Tirilly, Pierre
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Exact vs. approximate computation: Reconciling different estimates of Mycobacterium tuberculosis epidemiological parameters [PDF]
, 2014 Exact computational methods for inference in population genetics are intuitively preferable to approximate analyses. We reconcile two starkly different estimates of the reproductive number of tuberculosis from previous studies that used the same ...
Stadler, Tanja; id_orcid +8 more
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Exact estimates of stable solutions of differential-difference equations
Современная математика: Фундаментальные направленияFor a differential-difference equation with a positive fundamental solution, we obtain exponential stability criteria with precise estimates of the exponent and the exponential decay coefficient.
V. V. Malygina
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Sharp Estimates of Radial Dunkl and Heat Kernels in the Complex Case $A_n$
Comptes Rendus. Mathématique, 2021 In this article, we consider the radial Dunkl geometric case $k=1$ corresponding to flat Riemannian symmetric spaces in the complex case and we prove exact estimates for the positive valued Dunkl kernel and for the radial heat kernel.
Graczyk, Piotr, Sawyer, Patrice
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The Exact Error in Spectrum Estimates
The Annals of Mathematical Statistics, 1971 Since the asymptotic expression for the variance of estimators of the spectrum of a stationary time series was derived, it has often been used as an approximation to the variance of estimators using finite samples. Little attempt seems to have been made to investigate the nature of the convergence to the asymptotic form.
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Cox regression prediction estimates of treatment failure for exact values of CD4 count nadir.
, 2017 Cox regression prediction estimates of treatment failure for exact values of CD4 count nadir.
Alessandro Cozzi-Lepri (195759) +12 more
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Central Nervous System Tumors Among Infants in Canada: A Report From CYP‐C
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Central nervous system (CNS) tumors in infants are rare, pose unique clinical challenges, and lack large‐scale evidence‐based data to guide management. This study seeks to describe CNS tumors in Canadian infants and to compare their outcomes with those of older children.
Samuel Sassine +17 more
wiley +1 more source