Results 261 to 270 of about 180,670 (290)

Oscillation Criteria for Third Order Differential Equations

SIAM Journal on Mathematical Analysis, 1976
This paper gives some sufficient conditions for \[ y''' + p(x)y' + q(x)y = 0\] to have oscillatory solutions.
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Stability Criteria for Phase-Locked Oscillators

IEEE Transactions on Microwave Theory and Techniques, 1972
Stability criteria for negative conductance oscillators or amplifiers are derived in terms of the total circuit admittance. A figure of merit for phase locking at small injected powers is derived. The influence of large injected signals is studied.
G.H.B. Hansson, K.I. Lundstrom
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Oscillation Criteria for Self‐Adjoint Linear Differential Equations

Mathematische Nachrichten, 1994
The author studies oscillatory properties of solutions of selfadjoint linear differential equations of even order and their perturbations \[ \sum^n_{k= 0} (- 1)^k (p_k(x) y^{(k)})^{(k)}+ q(x) y= 0. \] His results generalize several known criteria for this type of equations.
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Oscillation criteria for nonlinear second order equations

Annali di Matematica Pura ed Applicata, 1969
A necessary and a sufficient condition are given for oscillation of all solutions of y″+f(t, y)=0. We sequire that a(t)α(y)≤f(t, y) if y>0, and f(t, y)
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Oscillation criteria of the Popov type

IEEE Transactions on Automatic Control, 1975
Criteria of the Popov type are established for the existence of periodic motion in state space for a class of time invariant, autonomous, nonlinear feedback systems. In a restricted sense they constitute an extension of a previously obtained result [1].
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Oscillation criteria for second‐order Emden–Fowler delay differential equations with a sublinear neutral term

Mathematische Nachrichten, 2020
Jozef Džurina, Said Grace, Irena Jadlovská   +2 more
exaly  

Oscillation criteria for neutral difference equations

AIP Conference Proceedings, 2022
S. Ponnurangan, M. Angayarkanni, G. Kokila   +2 more
openaire   +1 more source

On Sharp Oscillation Criteria for General Third-Order Delay Differential Equations

Mathematics, 2021
Irena Jadlovská, George E Chatzarakis, Jozef Džurina   +2 more
exaly  

American Joint Committee on Cancer acceptance criteria for inclusion of risk models for individualized prognosis in the practice of precision medicine

Ca-A Cancer Journal for Clinicians, 2016
Michael W Kattan, Kenneth Hess, Mahul B Amin   +2 more
exaly  

Four Theories of the Madden‐Julian Oscillation

Reviews of Geophysics, 2020
Chidong Zhang, Boualem Khouider, Da Yang
exaly