Results 261 to 270 of about 1,535,817 (290)
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Path Delays in the Neutral Atmosphere
2013This part describes the effects of the troposphere—strictly speaking the neutral atmosphere—on the propagation delay of space geodetic signals. A theoretical description of this tropospheric propagation delay is given as well as strategies for correcting for it in the data analysis of the space geodetic observations.
Nilsson, T. +5 more
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Periodicity on a class of neutral impulsive delay system
Applied Mathematics and Computation, 2008Using topological degree theory, the authors investigate the existence of positive periodic solutions of the following impulsive delay differential system \[ N'(t)=N(t)\left[a(t)-\beta(t)N(t)-\sum_{i=1}^nb_i(t)N(t-\tau_i(t))- \sum_{i=1}^nc_i(t)N'(t-\tau_i(t))\right], \] \(t>0,\) \(t\not=t_k,\) \(N(t_k^+)=(1+b_k-h_k)N(t_k^-).\)
Liang Zhang, Hong-Xu Li
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A theorem on neutral delay systems
Systems & Control Letters, 1985The author considers neutral delay equations with finitely many discrete non-commensurable delays. As is well known, the eigenvalues s of such an equation are asymptotically (as Im \(s\to \infty)\) determined by the eigenvalues of the difference part of the equation. These eigenvalues can be shifted only via derivative feedback.
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Damping Problem for a Neutral Control System with Delay
Doklady Mathematics, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Adkhamova A.S., Skubachevskii A.L.
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Oscillatory Phenomena in Neutral Delay Differential Equations
Acta Mathematica Hungarica, 1997Consider the general odd-order delay differential equation of the type \[ x^{(n)}(t)+\sum^m_{i=1} q_ix(t-\sigma_i)=0. \tag{*} \] The authors show that if \(n\) is odd and \[ \frac 1n \left(\sum^m_{i=1}\sigma^n_i q_i\right)^{1/n}>\frac 1e \] then every solution to (*) oscillates.
Das, P., Mishra, B. B.
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On stability for a class of neutral delay-differential systems
Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001This paper deals with the stability problem for a class of linear neutral delay-differential system. The time-delay is assumed constant and known. Delays dependent criteria, which are written in the form of linear matrix inequalities, are derived. Numerical examples indicate significant improvements over some existing results.
Bo Ni, Qing-Long Han
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New stability conditions for GRNs with neutral delay
Soft Computing, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ticao Jiao +2 more
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Asymptotic Stability of Neutral Systems with Multiple Delays
Journal of Optimization Theory and Applications, 1999zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Park, JH, Won, S
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Robust Stability of Uncertain Neutral Delay Systems
IEEE Transactions on Industrial Electronics, 2004The stability of a linear neutral delay-differential system is studied, where both the system matrices and time delays may be uncertain. A sufficient condition is derived to guarantee the perturbed system is robustly stable. The computation of acceptable upper bounds for system matrix uncertainties and time-delay perturbations is also discussed, and an
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Chebyshev solution for neutral delay differential equations
International Journal of Computer Mathematics, 1999A method is given for the numerical solution of a class of neutral and advanced delay differential equations, in the form of Chebyshev series. The method can be applied to system of neutral and advanced delay differential equations with single delay as well as with several delay terms. Moreover the method can be applied to stiff problems of these kinds.
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