Results 21 to 30 of about 257,637 (261)

Oscillation Modes in Multiresonant Oscillator Circuits [PDF]

open access: yesIEEE Transactions on Microwave Theory and Techniques, 2016
This work has been funded by the Spanish Government under contract TEC2014-60283-C3-1-R, the European Regional Development Fund (ERDF/FEDER) and the Parliament of Cantabria (12.JP02.64069).
Ramírez Terán, Franco Ariel   +2 more
openaire   +2 more sources

Finite oscillator models: the Hahn oscillator [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2011
A new model for the finite one-dimensional harmonic oscillator is proposed based upon the algebra u(2)_α. This algebra is a deformation of the Lie algebra u(2) extended by a parity operator, with deformation parameter α. A class of irreducible unitary representations of u(2)_α is constructed.
Jafarov, Elchin   +2 more
openaire   +3 more sources

Coupled-Oscillators [PDF]

open access: yesInternational Astronomical Union Colloquium, 1993
AbstractModal coupling oscillation models for the stellar radial pulsation and coupled-oscillators are reviewed. Coupled-oscillators with the second-order and third-order terms seemed to behave non-systematically. Using the equation by Schwarzschild and Savedoff (1949) with the dissipation term of van del Pol’s type which is third-order, we demonstrate
openaire   +2 more sources

Oscillating shells and oscillating balls in AdS [PDF]

open access: yesJournal of High Energy Physics, 2017
23 pages, 5 figures; v2: refs added; v3: JHEP ...
Banerjee, Avik   +3 more
openaire   +3 more sources

Braided oscillators [PDF]

open access: yesJournal of Mathematical Physics, 2002
A generalized oscillator algebra is proposed and the braided Hopf algebra structure for this generalized oscillator is investigated. Using the solutions for the braided Hopf algebra structure, two types of braided Fibonacci oscillators are introduced. This leads to two types of braided Biedenharn–Macfarlane oscillators as special cases of the Fibonacci
openaire   +4 more sources

Temporal variations in English Populations of a forest insect pest, the green spruce aphid (Elatobium abietinum), associated with the North Atlantic Oscillation and global warming

open access: yes, 2007
Based on an exceptionally long modern ecological dataset (41 years), it has been possible to show that warm weather in England associated with a positive North Atlantic Oscillation (NAO) index causes the spring migration of the green spruce aphid ...
Harrington, R.   +18 more
core   +1 more source

OSCILLATING FILAMENTS. I. OSCILLATION AND GEOMETRICAL FRAGMENTATION [PDF]

open access: yesThe Astrophysical Journal, 2017
ABSTRACT We study the stability of filaments in equilibrium between gravity and internal as well as external pressure using the grid-based AMR code RAMSES. A homogeneous, straight cylinder below a critical line mass is marginally stable. However, if the cylinder is bent, such as with a slight sinusoidal perturbation, an otherwise stable ...
Matthias Gritschneder   +2 more
openaire   +3 more sources

I: Retrieval of Atmospheric Carbon Dioxide from High-Resolution Spectra. II: Interannual Variability of the Stratospheric Quasi-Biennual Oscillation [PDF]

open access: yes, 2011
This thesis is devoted to an understanding of climate changes in the troposphere and the stratosphere from different aspects. In the troposphere, projecting future climate depends on our understanding of the exchange of CO₂ between the atmosphere, oceans,
Le Kuai (蒯乐, Kuai, Le
core   +1 more source

A pilot study of the impact of high-frequency chest wall oscillation in chronic obstructive pulmonary disease patients with mucus hypersecretion

open access: yes, 2011
Indranil Chakravorty1, Kamaljit Chahal2, Gillian Austin21St George's Hospital, London, 2East and North Hertfordshire NHS Trust, Lister Hospital and Primary Care Trust, Stevenage, Hertfordshire, UKIntroduction: Chronic obstructive pulmonary ...
Chahal, K   +8 more
core   +1 more source

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