Results 21 to 30 of about 3,056,140 (290)

Flat semimodules [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We introduce and investigate flat semimodules and k‐flat semimodules .We hope these concepts will have the same importance in semimodule theory as in the theory of rings and modules.
openaire   +2 more sources

Flat coordinates of flat Stäckel systems [PDF]

open access: yesApplied Mathematics and Computation, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marciniak, Krzysztof, Blaszak, Maciej
openaire   +3 more sources

Synthesis and Characterization of Benzodithiophene (BDT) Quinoid Compounds as a Potential Compound for n-Type Organic Thin-Film Transistors (OTFT)

open access: yesJurnal Kimia Sains dan Aplikasi, 2020
Two potential compounds as an n-Type organic thin-film transistor (OTFT) from benzodithiophene (BDT) derivatives have been synthesized and characterized. BDT was chosen as the core because it has π-conjugated bonds, rigid structures, and planar.
Mokhamat Ariefin   +1 more
doaj   +1 more source

Length spectra and degeneration of flat metrics [PDF]

open access: yes, 2009
In this paper we consider flat metrics (semi-translation structures) on surfaces of finite type. There are two main results. The first is a complete description of when a set of simple closed curves is spectrally rigid, that is, when the length vector ...
Duchin, Moon   +2 more
core   +2 more sources

3D crystal: how flat its flat facets are?

open access: yes, 2004
We investigate the hypothesis that the (random) crystal of the $(-)$-phase inside the $(+)$-phase of the 3D canonical Ising model has flat facets. We argue that it might need to be weakened, due to the possibility of formation of extra monolayer on a ...
56(4)   +18 more
core   +1 more source

Flat Focusing Mirror [PDF]

open access: yesScientific Reports, 2014
AbstractThe control of spatial propagation properties of narrow light beams such as divergence, focusing or imaging are main objectives in optics and photonics. In this letter, we propose and demonstrate experimentally a flat focusing mirror, based on an especially designed dielectric structure without any optical axis.
Cheng, Yu Chieh   +7 more
openaire   +5 more sources

Post-traumatic stress disorder and its relation to the pandemic of the novel corona virus (COVID-19) in the bahraini society

open access: yesEuropean Psychiatry, 2021
Introduction The world has given serious thought to epidemics, disasters and crises. One of the most important mental disorders that can be caused by epidemics, disasters and crises is the Post-Traumatic Stress Disorder (PTSD).
A. Al Howaihi, A. Al Hamada
doaj   +1 more source

Flat and Stably Flat Modules

open access: yesJournal of Algebra, 1999
The context of this paper is complete cohomology and modules are of type \((FP)_\infty\). Let \(\text{LH}{\mathbf F}\) denote the class of hierarchically decomposable groups and \(\text{H}_1{\mathbf F}\) the subclass of groups acting on a finite dimensional contractible CW-complex, in such a way that the setwise stabiliser of each cell is equal to the ...
openaire   +2 more sources

Neat-flat Modules [PDF]

open access: yesCommunications in Algebra, 2015
Let $R$ be a ring and $M$ be a right $R$-module. $M$ is called neat-flat if any short exact sequence of the form $0\to K\to N\to M\to 0$ is neat-exact i.e. any homomorphism from a simple right $R$-module $S$ to $M$ can be lifted to $N$. We prove that, a module is neat-flat if and only if it is simple-projective.
Buyukasik, Engin, Durgun, Yilmaz
openaire   +4 more sources

A sensory memory processing system with multi-wavelength synaptic-polychromatic light emission for multi-modal information recognition

open access: yesNature Communications, 2023
Realizing multi-modal information recognition tasks which can process external information efficiently and comprehensively is an urgent requirement in the field of artificial intelligence.
Liuting Shan   +6 more
doaj   +1 more source

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