Results 1 to 10 of about 18,355 (109)

On graded WAG2-absorbing submodule

open access: yesМатематичні Студії, 2022
Let $G$ be a group with identity $e$. Let $R$ be a $G$-graded commutative ring and $M$ a graded $R$-module. In this paper, we introduce the concept of graded $WAG2$-absorbing submodule. A number of results concerning of these classes of graded submodules
K. Al-Zoubi, Mariam Al-Azaizeh
doaj   +1 more source

Graded weakly 1-absorbing primary ideals

open access: yesDemonstratio Mathematica, 2023
Let GG be a group and RR be a GG-graded commutative ring with nonzero unity 1. In this article, we introduce the concept of graded weakly 1-absorbing primary ideals which is a generalization of graded 1-absorbing primary ideal.
Bataineh Malik, Abu-Dawwas Rashid
doaj   +1 more source

Optimization of graded multilayer designs for astronomical x-ray telescopes [PDF]

open access: yes, 1999
We developed a systematic method for optimizing the design of depth-graded multilayers for astronomical hard-x-ray and soft-γ-ray telescopes based on the instrument’s bandpass and the field of view.
Christensen, Finn E.   +3 more
core   +1 more source

Balloon-borne coded aperture telescope for arc-minute angular resolution at hard x-ray energies [PDF]

open access: yes, 1996
We are working on the development of a new balloon-borne telescope, MARGIE (minute-of-arc resolution gamma ray imaging experiment). It will be a coded aperture telescope designed to image hard x-rays (in various configurations) over the 20 - 600 keV ...
Altice, P P   +16 more
core   +2 more sources

Thermodynamics of Thermoelectric Phenomena and Applications [PDF]

open access: yes, 2011
Fifty years ago, the optimization of thermoelectric devices was analyzed by considering the relation between optimal performances and local entropy production. Entropy is produced by the irreversible processes in thermoelectric devices.
Goupil, Christophe   +4 more
core   +2 more sources

Automorphisms of Cuntz-Krieger algebras [PDF]

open access: yes, 2013
We prove that the natural homomorphism from Kirchberg's ideal-related KK-theory, KKE(e, e'), with one specified ideal, into Hom_{\Lambda} (\underline{K}_{E} (e), \underline{K}_{E} (e')) is an isomorphism for all extensions e and e' of separable, nuclear ...
Eilers, Søren   +2 more
core   +1 more source

Comparing Simulations and Observations of the Lyman-Alpha Forest I. Methodology [PDF]

open access: yes, 2001
We describe techniques for comparing spectra extracted from cosmological simulations and observational data, using the same methodology to link Lyman-alpha properties derived from the simulations with properties derived from observational data.
Cathy E. Petry   +5 more
core   +3 more sources

Crashworthy structures for future vehicle architecture of autonomous pods and heavy quadricycles on public roads: A review [PDF]

open access: yes, 2020
With the development and deployment of lightweight vehicles to the market, inclusive of autonomous pods, a review of advanced crashworthy structures and the design methodology has been conducted as it is thought that super-lightweight vehicles may pose ...
Bastien, Christophe   +3 more
core   +1 more source

Bio-Inspired Design of Lightweight and Protective Structures [PDF]

open access: yes, 2016
Biologically inspired designs have become evident and proved to be innovative and efficacious throughout the history. This paper introduces a bio-inspired design of protective structures that is lightweight and provides outstanding crashworthiness ...
Chaudhari, Prathamesh   +3 more
core   +1 more source

Oxide Heterostructures for Efficient Solar Cells

open access: yes, 2013
We propose an unexplored class of absorbing materials for high-efficiency solar cells: heterostructures of transition-metal oxides. In particular, LaVO_3 grown on SrTiO_3 has a direct band gap ~1.1 eV in the optimal range as well as an internal potential
Assmann, Elias   +5 more
core   +1 more source

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