Results 91 to 100 of about 9,248,795 (284)

Measurement and modelling of the probability density function of amplitude scintillations on an X -band satellite down-link

open access: yesElectronics Letters, 1981
The experimentally determined probabiliiy density function of the amplitude scintillations on an X-band satellite down-link is shown to depart significantly from the log-normal distribution for scintillations with amplitudes greater than ±0.15 dB, which occur on average for less than 5% of the time.
T.J. Moulsley   +3 more
openaire   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

open access: yesAdvanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Model selection techniques for seafloor scattering statistics in synthetic aperture sonar images of complex seafloors

open access: yesIET Radar, Sonar & Navigation
In quantitative analysis of seafloor scattering measurements, it is common to model the single‐point probability density function of the scattered intensity or amplitude.
Derek R. Olson, Marc Geilhufe
doaj   +1 more source

Probability density function of the angle differences.

open access: yes, 2015
Probability density function of the angle differences.
Jun Ma (9393)   +4 more
core   +1 more source

Dynamic Electrophoretic Assembly Coupled With Water‐Splitting‐Induced pH Control Enables Precision Ion Sieving Membranes

open access: yesAdvanced Materials, EarlyView.
A green, external‐catalyst‐free route grows defect‐free covalent organic framework membranes directly on ion‐exchange supports using an alternating electric field and in situ‐generated acid. Through a self‐regulating, self‐healing mechanism, the membranes achieve near‐complete, ultra‐fast separation of monovalent ions such as Li+, Na+, and K+, offering
Mohammad Hossein Jandaghian   +8 more
wiley   +1 more source

Shape Persistence in Elicited Subjective Crop Yield Probability Density Functions [PDF]

open access: yes
The shape persistence of a crop yield probability density function (PDF) was studied by using two variants of the Visual Impact Method (VIM) to elicit subjective estimations by farmers.
Clop-Gallart, M. Merce   +1 more
core  

Probability density function and fitted theoretical distribution.

open access: yes, 2019
Probability density function and fitted theoretical distribution.
Dean Whitman (6325619)   +3 more
core   +1 more source

Tamper‐Responsive Physical Unclonable Functions via Graphene‐Interlayered Block Copolymer Random Structures

open access: yesAdvanced Materials, EarlyView.
Self‐invalidating multilayer physical unclonable functions (PUFs) integrate fingerprint‐like metal nanopattern bilayers from block copolymer templates with highly reactive reduced graphene oxide (rGO) interlayers. This tamper‐responsive architecture blocks all unauthorized physical and chemical replication attempts while autonomously deactivating ...
Gyu Hui Jo   +7 more
wiley   +1 more source

Gumbel probability density function for imperfect imitation.

open access: yes, 2012
Gumbel probability density function for imperfect imitation.
Krist Vaesen (148097)
core   +1 more source

Percolation‐Driven β‐Relaxation Enables Resonant Acceleration of Crystallization in Amorphous Phase‐Change Materials

open access: yesAdvanced Materials, EarlyView.
Mobile‐atom percolation underlying β‐relaxations fundamentally dictates the crystallization pathways of phase‐change materials. High‐frequency ultrasonic excitation dynamically modulates this critical mobility percolation network, substantially accelerating the crystallization process.
Yu‐Yao Liu   +11 more
wiley   +1 more source

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