Results 61 to 70 of about 3,277,735 (341)

SECURITY OF TEACHING ACTIVITIES ONLINE [PDF]

open access: yesAnalele Universităţii Constantin Brâncuşi din Târgu Jiu : Seria Economie, 2021
The current pandemic context has led to the rapid transition of all online teaching activities, and the security of all activities has become vulnerable, largely due to limited awareness by students and teachers, creating a security breach through the ...
CARINA-ELENA STEGĂROIU   +2 more
doaj  

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

open access: yesAdvanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu   +8 more
wiley   +1 more source

Zeno dynamics in quantum open systems

open access: yes, 2015
Quantum Zeno effect shows that frequent observations can slow down or even stop the unitary time evolution of an unstable quantum system. This effect can also be regarded as a physical consequence of the the statistical indistinguishability of ...
Fan, Heng, Zhang, Yu-Ran
core   +2 more sources

Indeterminate-length quantum coding [PDF]

open access: yes, 2000
The quantum analogues of classical variable-length codes are indeterminate-length quantum codes, in which codewords may exist in superpositions of different lengths. This paper explores some of their properties.
A. R. Calderbank   +18 more
core   +2 more sources

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

open access: yesAdvanced Engineering Materials, EarlyView.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

Plasma-like Description for Elementary and Composite Quantum Particles

open access: yesEntropy, 2022
Schrödinger noticed in 1952 that a scalar complex wave function can be made real by a gauge transformation. The author showed recently that one real function is also enough to describe matter in the Dirac equation in an arbitrary electromagnetic or Yang ...
Andrey Akhmeteli
doaj   +1 more source

Quantum families of invertible maps and related problems

open access: yes, 2015
The notion of families of quantum invertible maps ($C^*$-algebra homomorphisms satisfying Podle\'s condition) is employed to strengthen and reinterpret several results concerning universal quantum groups acting on finite quantum spaces.
Skalski, Adam, Sołtan, Piotr M.
core   +1 more source

Quantum buckling

open access: yesPhysical Review E, 2011
We study the mechanical buckling of a two dimensional membrane coated with a thin layer of superfluid. It is seen that a singularity (vortex or anti-vortex defect) in the phase of the quantum order parameter, distorts the membrane metric into a negative conical singularity surface, irrespective of the defect sign.
Upadhyaya, N., Vitelli, V.
openaire   +5 more sources

Quantum jumps are more quantum than quantum diffusion [PDF]

open access: yesNew Journal of Physics, 2014
It was recently argued [Phys. Rev. Lett 108, 220402 (2012)] that the stochastic dynamics of an open quantum system are not inherent to the system, but rather depend on the existence and nature of a distant detector. The proposed experimental tests involved homodyne detection, giving rise to quantum diffusion, and required total efficiencies of well ...
Daryanoosh, Shakib, Wiseman, Howard M
openaire   +4 more sources

Challenges during Flash Lamp Annealing of Aerosol‐Deposited Barium Titanate Films

open access: yesAdvanced Engineering Materials, EarlyView.
Aerosol deposition is used to rapidly deposit barium titanate films with thicknesses ranging from 2 to 16 μm at room temperature, eliminating the need for further densification. However, to recover the electromechanical properties, annealing is required, which limits the usage of temperature‐sensitive substrates.
Michel Kuhfuß   +7 more
wiley   +1 more source

Home - About - Disclaimer - Privacy