Results 21 to 30 of about 494,331 (319)

Improved Ar(II) transition probabilities [PDF]

open access: yes, 1986
Precise Ar(II) branching ratios have been measured on a high current hollow cathode with a 1-m Fourier transform spectrometer. Absolute transition probabilities for 11 Ar(II) lines were calculated from these branching ratios and lifetime measurements ...
Danzmann, K., Kock, M.
core   +1 more source

Estimating the Transitional Probabilities of the E.Coli Gene Chain by Maximum Likelihood Method and Bayes Method [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية
The transition matrix estimators of the Markov chain are not accurate and the transition matrix is considered given. There are many methods that are used to estimate the transition probabilities matrix for different cases, the most famous of which is the
Alaa Farhan Ahmed, Muthanna Sulaiman
doaj   +1 more source

Lifetimes, transition probabilities, and level energies in Fe I [PDF]

open access: yes, 1991
We use time-resolved laser-induced fluorescence to measure the lifetime of 186 Fe levels with energies between 25 900 and 60 758 cm . Measured emission branching fractions for these levels yield transition probabilities for 1174 transitions in the range ...
Brault, J. W.   +4 more
core   +1 more source

Non-Equilibrium Random Matrix Theory : Transition Probabilities [PDF]

open access: yes, 2016
In this letter we present an analytic method for calculating the transition probability between two random Gaussian matrices with given eigenvalue spectra in the context of Dyson Brownian motion.
Pedro, Francisco Gil   +1 more
core   +3 more sources

Transition probabilities in Gd III [PDF]

open access: yesAstronomy & Astrophysics, 2002
Theoretical lifetimes, calculated with inclusion of core-polarization eects, have been determined for five 4f 7 6p levels of doubly ionized gadolinium. They agree quite well with recent experimental values measured by time-resolved laser- induced fluorescence spectroscopy.
Biémont, Emile   +2 more
openaire   +2 more sources

A compact statistical model of the song syntax in Bengalese finch [PDF]

open access: yes, 2010
Songs of many songbird species consist of variable sequences of a finite number of syllables. A common approach for characterizing the syntax of these complex syllable sequences is to use transition probabilities between the syllables. This is equivalent
A Krogh   +46 more
core   +4 more sources

Neutrino Mixing and Leptonic CP Phase in Neutrino Oscillations [PDF]

open access: yes, 2001
Oscillations of the Dirac neutrinos of three generations in vacuum are considered with allowance made for the effect of the CP-violating leptonic phase (analogue of the quark CP phase) in the lepton mixing matrix.
D. A. Ryzhikh   +10 more
core   +2 more sources

Machine Learning Predictions of Transition Probabilities in Atomic Spectra

open access: yesAtoms, 2021
Forward modeling of optical spectra with absolute radiometric intensities requires knowledge of the individual transition probabilities for every transition in the spectrum.
Joshua J. Michalenko   +5 more
doaj   +1 more source

Transition Probabilities Of Astrophysical Interest In The Niobium Ions Nb+ And Nb2+ [PDF]

open access: yes, 2010
Aims. We attempt to derive accurate transition probabilities for astrophysically interesting spectral lines of Nb II and Nb III and determine the niobium abundance in the Sun and metal-poor stars rich in neutron-capture elements. Methods.
Biemont, E.   +8 more
core   +1 more source

Synaptic encoding of temporal contiguity

open access: yesFrontiers in Computational Neuroscience, 2013
Often we need to perform tasks in an environment that changes stochastically. In these situations it is important to learn the statistics of sequences of events in order to predict the future and the outcome of our actions. The statistical description of
Srdjan eOstojic   +2 more
doaj   +1 more source

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