Results 11 to 20 of about 1,559,486 (311)
Implications of Second-Order Cybernetics and Autopoiesis on Systems-of-Systems Engineering
SystemsSystems-of-systems are often characterized as systems where the constituent parts have some independence from the whole. Recent research has aimed at clarifying in more detail what this independence means.
Jakob Axelsson
doaj +2 more sources
Continuous Adaptive Finite Reaching Time Control and Second-Order Sliding modes [PDF]
, 2013 This paper focuses on the design of adaptive finite reaching time control for first- and second-order dynamic systems with perturbation terms given in a regressive form. The uncertainties considered here are assumed to be bounded with unknown bounds. The
Spurgeon, Sarah K. +3 more
core +1 more source
ALGORITHM FOR SELF-TUNING THE PID CONTROLLER [PDF]
Journal of Engineering Science (Chişinău), 2021 An algorithm for self-tuning the PID controller to the second order systems is proposed in this paper. The proposed self-tuning procedure was developed according to the maximum stability degree criterion, the criterion that permits to achieve the high ...
COJUHARI, Irina
doaj +1 more source
Second order phase field asymptotics for multi-component systems [PDF]
, 2006 An asymptotic analysis of a phase field model for solidification in multicomponent alloy systems is presented. In the limit of vanishing interface thickness the related sharp interface model is approximated to second order by taking a non-constant ...
Stinner, Björn, Garcke, Harald
core +1 more source
Superlinear systems of second-order ODE’s
Nonlinear Analysis: Theory, Methods & Applications, 2008 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
De Figueiredo, Djairo G., Ubilla, Pedro
openaire +4 more sources
Asymptotic solvers for second-order differential equation systems with multiple frequencies [PDF]
, 2013 In this paper, an asymptotic expansion is constructed to solve second-order dierential equation systems with highly oscillatory forcing terms involving multiple frequencies.
Iserles, Arieh +3 more
core +1 more source
Multiple solutions of second order Hamiltonian systems
Electronic Journal of Qualitative Theory of Differential Equations, 2017 The existence and the multiplicity of periodic solutions for a parameter dependent second order Hamiltonian system are established via linking theorems. A monotonicity trick is adopted in order to prove the existence of an open interval of parameters for
Gabriele Bonanno +2 more
doaj +1 more source
Second Order Eigensensitivities of Singularly Perturbed Systems
Journal of King Saud University: Engineering Sciences, 1994 In this paper, second order eigenvalue sensitivities are derived with respect to the singular perturbation parameter whose variation changes the reduced system order.
Zaglol S. Elrazaz, Awadh A. Al-Digs
doaj +1 more source
Regularized second-order correlation methods for extended systems
, 2021 Second-order Møller–Plesset perturbation theory (MP2) constitutes the simplest form of many-body wavefunction theory and often provides a good compromise between efficiency and accuracy. There are, however, well-known limitations to this approach.
Tsatsoulis, T. +11 more
core +1 more source
Limit Cycles of Systems of the Second Order [PDF]
Proceedings of the National Academy of Sciences, 1950 The importance in non-linear mechanics of these limit cycles, or isolated periodic solutions, is well known. It has led to a variety of methods for finding these solutions which yield some information in noteworthy special cases. In Princeton lectures in the fall of 1949, Lefschetz introduced and applied to certain questions the following method: a ...
openaire +3 more sources