Results 81 to 90 of about 349,354 (286)
Ultimate Boundedness of Nonlinear Singularly Perturbed System with Measurement Noise
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2013 SUMMARY In this letter, we consider the ultimate boundedness of the singularly perturbed system with measurement noise. The composite controller is commonly used to regulate the singularly perturbed system. However, in the presence of measurement noise, the composite controller does not guarantee the ultimate boundedness of the singularly perturbed ...
Kyung-In Kang +2 more
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New Ultimate Boundedness and Periodicity Results for Certain Third-order Nonlinear Vector Differential Equations [PDF]
, 2006 The principle aim of this paper is to present some new results related to the ultimate boundedness and existence of periodic of solutions a certain non-linear ordinary vector differential equation of third order.
Tunc, Cemil, Tunc, Ercan
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Advanced Engineering Materials, EarlyView.CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz +4 more
wiley +1 more source
Stochastic Lotka–Volterra mutualism model with jumps
Modern Stochastics: Theory and ApplicationsThe existence and uniqueness of the global positive solution are proved for the system of stochastic differential equations describing a two-species Lotka–Volterra mutualism model disturbed by white noise, centered and noncentered Poisson noises. For the
Olga Borysenko, Oleksandr Borysenko
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Advanced Engineering Materials, EarlyView.This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji +3 more
wiley +1 more source
IEEE Access, 2019 A novel control scheme, namely adaptive-adaptive robust (A2R) control is proposed for motion control of mechanical systems. The system contains uncertainty which is bounded while the bound may be unknown. Two designs of robust controls are proposed, with
Qinqin Sun +3 more
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Markov switched stochastic Nicholson-type delay system with patch structure
Advances in Difference Equations, 2020 Considering stochastic perturbations of white and color noises, we introduce the Markov switched stochastic Nicholson-type delay system with patch structure.
Wentao Wang, Guifeng Deng, Wei Chen
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Mathematical and Computational ApplicationsThis paper addresses adaptive fuzzy tracking control for fractional-order nonlinear systems (FONSs) subject to asymmetric state constraints without imposing separate feasibility conditions on intermediate virtual controllers. Fuzzy logic systems are used
Xiaobing Han +3 more
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The criteria of ultimate boundedness for nonautonomous Lotka-Volterra tree systems
Applied Mathematics Letters, 2001 The authors study the nonautonomous Lotka-Volterra tree system \[ \dot x_i(t)=x_i(t)(b_i(t)-\sum_{j=1}^n a_{ij}(t)x_j(t)),\quad i\in N,\tag{1} \] with \(N=\{1,2,\dots ,n\}\), \(n\) is the species number and \(x_i(t)\) represents the density of species \(i\) at time \(t\). Functions \(a_{ij}, b_i\) are supposed to be bounded on \(\mathbb{R}\).
Xue-Zhi Li, Geni Gupur, Xin-Hua Ji
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Advanced Engineering Materials, EarlyView.Gallium microalloying redirects interfacial reactions in low‐temperature Bi–Sn solders from Cu–Sn toward Cu–Ga intermetallic formation. The resulting Cu–Ga layer suppresses intermetallic growth during thermal aging, alters fracture pathways, and improves interfacial stability.
Iva Králová +6 more
wiley +1 more source