Results 51 to 60 of about 172,373 (295)
Performance and Statistical Analysis of Stream ciphers in GSM Communications
Journal of Communications Software and Systems, 2020 For a stream cipher to be secure, the keystreamgenerated by it should be uniformly random with parameter 1/2.Statistical tests check whether the given sequence follow a certainprobability distribution.
Nagendar Yerukala +2 more
doaj
Nature Communications, 2019 The scrambling of quantum information in a many-body system leads to the emergence of statistical mechanics and chaotic behaviour. Here the authors establish quantitative relationships between experimentally-measureable correlators, the Rényi entropy and
R. J. Lewis-Swan +3 more
doaj +1 more source
Ultra-broadband Kerr microcomb through soliton spectral translation
Nature Communications, 2021 Integrated optical frequency measurements, benefit from broadband on-chip frequency combs. Here the authors present a low-noise microcomb whose span extends from telecom to near-visible wavelengths.
Gregory Moille +7 more
doaj +1 more source
Advanced Materials Technologies, EarlyView.ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel +4 more
wiley +1 more source
Accuracy of magnetic resonance based susceptibility measurements
AIP Advances, 2017 Magnetic Resonance Imaging (MRI) is increasingly used to map the magnetic susceptibility of tissue to identify cerebral microbleeds associated with traumatic brain injury and pathological iron deposits associated with neurodegenerative diseases such as ...
Hannah E. Erdevig +4 more
doaj +1 more source
Efficient chip-based optical parametric oscillators from 590 to 1150 nm
APL Photonics, 2022 Optical parametric oscillators are widely used to generate coherent light at frequencies not accessible by conventional laser gain. However, chip-based parametric oscillators operating in the visible spectrum have suffered from pump-to-signal conversion ...
Jordan R. Stone +3 more
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Advanced Materials Technologies, EarlyView.One‐dimensional C4N2H14PbBr4 is shown to have a quasi‐direct electronic band structure and strongly anisotropic transport with polarized broadband emission. A GW/Bethe–Salpeter excited‐state force formalism, supported by polarized Raman and temperature‐dependent photoluminescence, identifies low–frequency Pb–Br phonons that drive ultrafast exciton self‐
Rijan Karkee +7 more
wiley +1 more source
Nature Communications, 2019 An amendment to this paper has been published and can be accessed via a link at the top of the paper.
R. J. Lewis-Swan +3 more
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The NIST HumanID Evaluation Framework
, 2003 The NIST HumanID Evaluation Framework, or HEF, is an effort to design, implement, and deploy standards for the robust and complete documentation of the biometric system evaluation process. The HEF leverages contemporary technologies, specifically XML, for the formal description of biometric tests.
Ross J. Micheals +2 more
openaire +1 more source
Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement
Advanced Science, EarlyView.The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang +7 more
wiley +1 more source