Results 11 to 20 of about 604,365 (299)

Coherence analysis: Methods, solutions and problems [PDF]

open access: yes, 2008
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.A coherence function is a measure of the correlation of two signals and may be used as a measure for functional relationship between brain areas.
Irfan, Memon
core   +7 more sources

Photodiode-based time zero determination for ultrafast electron microscopy

open access: yesStructural Dynamics, 2023
Pump-probe experiments in ultrafast electron microscopy require temporal overlap between the pump and probe pulses. Accurate measurements of the time delay between them allows for the determination of the time zero, the moment in time where both pulses ...
S. T. Kempers   +5 more
doaj   +1 more source

Accessible coherence and coherence distribution [PDF]

open access: yesPhysical Review A, 2017
The definition of accessible coherence is proposed. Through local measurement on the other subsystem and one way classical communication, a subsystem can access more coherence than the coherence of its density matrix. Based on the local accessible coherence, the part that can not be locally accessed is also studied, which we call it remaining coherence.
Ma, Teng   +4 more
openaire   +2 more sources

RF acceleration of ultracold electron bunches

open access: yesStructural Dynamics, 2023
The ultrafast and ultracold electron source, based on laser cooling and trapping of atomic gas and its subsequent near-threshold two-step photoionization, is capable of generating electron bunches with a high transverse brightness at energies of roughly ...
D. F. J. Nijhof   +5 more
doaj   +1 more source

Fibre optic fizeau intererometer for optical coherence tomography [PDF]

open access: yes, 2006
The aim of the project was to develop the Fizeau interferometer configuration to take advantage of the benefits derived from its “downlead insensitivity” to temperature and polarisation fading.
Casaubieilh, P.
core   +7 more sources

Collisional microwave heating and wall interaction of an ultracold plasma in a resonant microwave cavity

open access: yesNew Journal of Physics, 2022
Recently, we introduced a resonant microwave cavity as a diagnostic tool for the study of ultracold plasmas (UCPs). This diagnostic allows us to study the electron dynamics of UCPs non-destructively, very fast, and with high sensitivity by measuring the ...
M A W van Ninhuijs   +2 more
doaj   +1 more source

Explanatory Coherence and the Impossibility of Confirmation by Coherence [PDF]

open access: yesPhilosophy of Science, 2021
The coherence of independent reports provides a strong reason to believe that the reports are true. This plausible claim has come under attack from recent work in Bayesian epistemology. This work shows that, under certain probabilistic conditions, coherence cannot increase the probability of the target claim.
openaire   +1 more source

Common Coherence Witnesses and Common Coherent States [PDF]

open access: yesEntropy, 2021
We show the properties and characterization of coherence witnesses. We show methods for constructing coherence witnesses for an arbitrary coherent state. We investigate the problem of finding common coherence witnesses for certain class of states. We show that finitely many different witnesses W1,W2,⋯,Wn can detect some common coherent states if and ...
Bang-Hai Wang   +3 more
openaire   +6 more sources

Effects of Transcranial Direct Current Stimulation of Bilateral Supplementary Motor Area on the Lower Limb Motor Function in a Stroke Patient with Severe Motor Paralysis: A Case Study

open access: yesBrain Sciences, 2022
In patients with severe motor paralysis, increasing the excitability of the supplementary motor area (SMA) in the non-injured hemisphere contributes to the recovery of lower limb motor function.
Sora Ohnishi   +5 more
doaj   +1 more source

Ways in which coherence is confirmation conducive [PDF]

open access: yes, 2006
Recent works in epistemology show that the claim that coherence is truth conducive – in the sense that, given suitable ceteris paribus conditions, more coherent sets of statements are always more probable – is dubious and possibly false.
Moretti L, Luca Moretti, Moretti, Luca
core   +1 more source

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