Results 71 to 80 of about 43,777 (268)

Fractals

open access: yesCanadian Medical Education Journal, 2022
Tashya Orasi   +2 more
openaire   +3 more sources

Femtosecond‐Laser‐Induced Physical Unclonable Random Maze Structure for Storage‐Free Encryption

open access: yesAdvanced Science, EarlyView.
Femtosecond‐laser‐induced gold random maze structures serve as multimodal physical unclonable functions for storage‐free encryption. Their stochastic optical, electrical, and Raman responses are generated by plasmon‐assisted Marangoni formation and converted into AES‐compatible keys without permanent secret‐key storage, offering a portable route toward
Shiru Jiang   +6 more
wiley   +1 more source

Review of Fractal and Fractal Derivatives in relation to the Physics of Fractals

open access: yes, 2013
Fractional and fractal derivatives are both generalizations of the usual derivatives that consider derivatives of non-integer orders. Interest in these generalizations has been triggered by a resurgence of clamor to develop a mathematical tool to describe “roughness” in the spirit of Mandelbrot’s (1967) Fractal Geometry. Fractional derivatives take the
Maglasang, Gibson T.   +3 more
openaire   +1 more source

Strain‐Adaptive Dielectric Metamaterials via Bioinspired “Ligament‐Bone” Architecture for Ultrahigh‐Energy Capacitive Storage

open access: yesAdvanced Science, EarlyView.
A bioinspired strain‐adaptive ligament‐bone architecture achieves record‐high energy density of 26.1 J cm−3 and 90% efficiency at 600 MV m−1, coupled with a Young's modulus of 2.13 GPa. ABSTRACT Polymer dielectrics for capacitive energy storage face fundamental trade‐offs between breakdown strength, energy density, efficiency, and mechanical robustness.
Jian Wang   +6 more
wiley   +1 more source

Looking under the lamp-post: quantifying the performance of contact tracing in the United States during the SARS-CoV-2 pandemic

open access: yesBMC Public Health
Contact tracing forms a crucial part of the public-health toolbox in mitigating and understanding emergent pathogens and nascent disease outbreaks. Contact tracing in the United States was conducted during the pre-Omicron phase of the ongoing COVID-19 ...
Henry Bayly   +6 more
doaj   +1 more source

MEGADES: MEGARA galaxy disc evolution survey

open access: yesAstronomy & Astrophysics
We present the ionised gas properties and metallicity gradients of the central area of a sample of 43 galaxies using observations obtained by the MEGADES survey.
Chamorro-Cazorla M.   +15 more
doaj   +1 more source

Dissipative processes in tribology

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2019
In the paper the dissipative process is considered as the basis of the nature of external friction in solids. It is shown that non-equilibrium processes in the tribosystem can lead to a decrease in the production of entropy and, consequently, the ...
V.M. Yurov   +3 more
doaj   +1 more source

A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS

open access: yesAdvanced Electronic Materials, EarlyView.
A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang   +14 more
wiley   +1 more source

Particle transport modelling for D/T ratio control experiments in JET

open access: yesNuclear Fusion
This study presents results from particle transport modelling for D/T ratio control experiments conducted during the JET DTE3 campaign. TRANSP interpretative and JETTO predictive simulations for D and T densities were performed and their results are ...
K.K. Kirov   +18 more
doaj   +1 more source

Brief bibliography of works of Alexander Alexeevich Potapov (books and chapters in books)

open access: yesФизика волновых процессов и радиотехнические системы
Background. The article contains the brief bibliography of works of a major Russian scientist – radiophysicist Alexander Alexeevich Potapov who made a great contribution into development of fundamental and applied investigations in the field of radar ...
Elena R. Men’kova   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy