Results 31 to 40 of about 1,919,678 (273)

Parametric Invariance

open access: yesBrazilian Journal of Physics, 2022
We examine the development of the concept of parametric invariance in classical mechanics, quantum mechanics, statistical mechanics, and thermodynamics, and particularly its relation to entropy. The parametric invariance was used by Ehrenfest as a principle related to the quantization rules of the old quantum mechanics.
openaire   +2 more sources

Parametric datatype-genericity [PDF]

open access: yesProceedings of the 2009 ACM SIGPLAN workshop on Generic programming, 2009
Datatype-generic programs are programs that are parametrized by a datatype or type functor: whereas polymorphic programs abstract from the "integers" in "lists of integers",datatype-generic programs abstract from the "lists of". There are two main styles of datatype-generic programming: the Algebra of Programming approach, characterized by structured ...
Gibbons, J, Paterson, R, ACM
openaire   +3 more sources

Parametric oscillator tuning curve from observations of total parametric fluorescence [PDF]

open access: yes, 1972
Measurements of total emitted parametric fluorescence power are presented and used to fix one point on the predicted tuning curve of a parametric oscillator.
Ganiel, U., Pearson, J. E., Yariv, A.
core   +1 more source

Efficient parametric amplification in high and very high frequency piezoelectric nanoelectromechanical systems [PDF]

open access: yes, 2010
Parametric amplification in nanomechanical structures is demonstrated by modulating a purely intrinsic mechanical parameter of the system—the stress—via piezoelectric electromechanical coupling.
Karabalin, R. B.   +2 more
core   +1 more source

Comparison of Parametric and Nonparametric Forecasting Methods for Daily COVID-19 Cases in Malaysia

open access: yesJOIV: International Journal on Informatics Visualization, 2023
Numerous research studies are currently examining various measures to control the transmission of COVID-19. One essential task in this regard is predicting or forecasting the number of infected individuals.
I Made Artha Agastya, Afrig Aminuddin
doaj   +1 more source

Borel parametrizations [PDF]

open access: yesTransactions of the American Mathematical Society, 1979
Let X and Y be uncountable Polish spaces and B a Borel subset oi X × Y X\, \times \,Y such that for each x, B x {B_x} is uncountable. A Borel parametrization of B is a Borel isomorphism, g, of X × E
openaire   +1 more source

Feedback Enhanced Sensitivity in Optomechanics: Surpassing the Parametric Instability Barrier [PDF]

open access: yes, 2011
The intracavity power, and hence sensitivity, of optomechanical sensors is commonly limited by parametric instability. Here we characterize the parametric instability induced sensitivity degradation in a micron scale cavity optomechanical system ...
Andersen, Ulrik L.   +3 more
core   +3 more sources

Broadband stimulated four-wave parametric conversion on a tantalum pentoxide photonic chip [PDF]

open access: yes, 2011
We exploit the large third order nonlinear susceptibility (?(3) or “Chi 3”) of tantalum pentoxide (Ta2O5) planar waveguides and realize broadband optical parametric conversion on-chip.
Chaneliere   +20 more
core   +1 more source

Simple Parametric Model for Calculation of Lateral Electromagnetic Loads in Tokamaks at Asymmetric Vertical Displacement Events (AVDE)

open access: yesPlasma, 2022
This paper describes a family of relatively simple numerical models for calculation of asymmetric electromagnetic (EM) loads at all tokamak structures and coils at asymmetric vertical plasma displacement events (AVDE). Unlike currently known AVDE studies
Sergey Sadakov   +3 more
doaj   +1 more source

Effect of Corneal Tilt on the Determination of Asphericity

open access: yesSensors, 2021
Purpose: To quantify the effect of levelling the corneal surface around the optical axis on the calculated values of corneal asphericity when conic and biconic models are used to fit the anterior corneal surface.
Alejandra Consejo   +4 more
doaj   +1 more source

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