Statistical properties of cerebral CT perfusion imaging systems. Part II. Deconvolution-based systems.
Sign Up to like & getrecommendations! Published in 2019 at "Medical physics"
DOI: 10.1002/mp.13805
Abstract: PURPOSE The purpose of this work was to develop a theoretical framework to pinpoint the quantitative relationship between input parameters of deconvolution-based cerebral perfusion (CTP) imaging systems and statistical properties of the output perfusion maps.… read more here.
Keywords: deconvolution based; perfusion; cbv; noise ... See more keywords
Statistical properties of the two-dimensional Dirac oscillator with spin–orbit coupling
Sign Up to like & getrecommendations! Published in 2020 at "Annals of Physics"
DOI: 10.1016/j.aop.2020.168328
Abstract: Abstract We investigate the statistical properties of a two-dimensional Dirac oscillator (2D DO) in the presence of a spin–orbit coupling, breaking its supersymmetry. The Hamiltonian of the problem is shown to admit an exact Foldy-Wouthuysen… read more here.
Keywords: spin orbit; dirac oscillator; two dimensional; statistical properties ... See more keywords
Statistical properties of Continuous Composite Outcomes: Implications for clinical trial design
Sign Up to like & getrecommendations! Published in 2020 at "Contemporary Clinical Trials Communications"
DOI: 10.1016/j.conctc.2020.100655
Abstract: Statistical efficiency can be gained in clinical trials by using composites of time-to-event outcomes when the individual component outcomes have low event rates. However, the utility of continuous composite outcome measures is not as clear.… read more here.
Keywords: clinical trial; trial; continuous composite; statistical properties ... See more keywords
Statistical properties of threshold and notch derived estimations of the critical distance according to the line method of the theory of critical distances
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Fatigue"
DOI: 10.1016/j.ijfatigue.2020.105656
Abstract: Abstract The theory of critical distances is based on the definition of a material-dependent length L. Here, we investigate the statistical properties of L deduced from the crack threshold or a suitable notched specimen geometry.… read more here.
Keywords: properties threshold; critical distances; threshold notch; statistical properties ... See more keywords
Modulating the statistical properties of a vector partially coherent beam by a 4f optical system
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Quantitative Spectroscopy and Radiative Transfer"
DOI: 10.1016/j.jqsrt.2018.10.025
Abstract: Abstract A 4f optical system is applied to modulate the statistical properties of a vector partially coherent beam. We find that the intensity distribution and the degree of coherence of an incident radially polarized Gaussian… read more here.
Keywords: optical system; properties vector; beam; vector partially ... See more keywords
The level crossing rates and associated statistical properties of a random frequency response function
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2017.12.001
Abstract: This work is concerned with the statistical properties of the frequency response function of the energy of a random system. Earlier studies have considered the statistical distribution of the function at a single frequency, or… read more here.
Keywords: frequency response; level; statistical properties; function ... See more keywords
Radially polarized twisted Multi-Gaussian Schell-model beams and their statistical properties
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.126321
Abstract: Abstract A radially polarized twisted Multi-Gaussian Schell-model (RPT MGSM) beam based on the unified theory of coherence and polarization is introduced. The reliability conditions for the beams are also derived. We derive the analytical expressions… read more here.
Keywords: twisted multi; polarized twisted; radially polarized; polarization ... See more keywords
Statistical Properties of Molecular Ions in the Ring Current Observed by the Arase (ERG) Satellite
Sign Up to like & getrecommendations! Published in 2019 at "Geophysical Research Letters"
DOI: 10.1029/2019gl084163
Abstract: Molecular ions in the magnetosphere can be a tracer of fast ion outflows from the deep ionosphere. Statistical properties of molecular ions (O2+/NO+/N2+) in the ring current are investigated based on ion composition measurements ( read more here.
Keywords: molecular ions; ions ring; ring current; erg satellite ... See more keywords
Statistical properties of autonomous flows in 2D active nematics.
Sign Up to like & getrecommendations! Published in 2019 at "Soft matter"
DOI: 10.1039/c8sm01877d
Abstract: We study the dynamics of a tunable 2D active nematic liquid crystal composed of microtubules and kinesin motors confined to an oil-water interface. Kinesin motors continuously inject mechanical energy into the system through ATP hydrolysis,… read more here.
Keywords: active nematics; kinesin motors; autonomous flows; properties autonomous ... See more keywords
Structural characterization and statistical properties of jammed soft ellipsoid packing.
Sign Up to like & getrecommendations! Published in 2021 at "Soft matter"
DOI: 10.1039/d0sm01699c
Abstract: The jamming transition and jammed packing structures of hydrogel soft ellipsoids are studied using magnetic resonance imaging techniques. As the packing fraction increases, the fluctuation of local free volume decreases and the fluctuation of particle… read more here.
Keywords: packing fraction; characterization statistical; jammed soft; properties jammed ... See more keywords
Switchbacks: statistical properties and deviations from Alfvénicity
Sign Up to like & getrecommendations! Published in 2021 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202039442
Abstract: Context. Parker Solar Probe’s first solar encounter has revealed the presence of sudden magnetic field deflections that are called switchbacks and are associated with proton velocity enhancements in the slow alfvénic solar wind. Aims. We… read more here.
Keywords: field; alfv nic; magnetic field; statistical properties ... See more keywords