Results 71 to 80 of about 5,981,715 (415)

Inelastic lifetimes of hot electrons in real metals [PDF]

Phys. Rev. Lett. 83, 2230 (1999), 1999
We report a first-principles description of inelastic lifetimes of excited electrons in real Cu and Al, which we compute, within the GW approximation of many-body theory, from the knowledge of the self-energy of the excited quasiparticle. Our full band-structure calculations indicate that actual lifetimes are the result of a delicate balance between ...
arxiv   +1 more source

Multi‐institutional study on image quality for a novel CBCT solution on O‐ring linac

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Introduction This work presents a multi‐institutional study on image quality provided by a novel cone beam computed tomography (CBCT). The main goal is to investigate the consistency of imaging performance across multiple institutions.
Luis Agulles‐Pedrós, R. Lee MacDonald, Amanda Jean Cherpak, Nayha Dixit, Lei Dong, Tianyu Zhao, Kundan Thind, Anthony Doemer, Boon‐Keng Teo, Shiqin Su, Alexander Moncion, James L. Robar   +11 more
wiley   +1 more source

Implementation of an environmental management system in a company for computers and electronic devices repairing [PDF]

Journal of Research and Innovation for Sustainable Society, 2019
The paper presents the conditions, objectives and stages necessary to implement an ISO 14001Environmental Management System in a company for computers and electronic devices repairing.
I Radulescu1 , A V Radulescu, M M Nicolescu   +2 more
doaj   +1 more source

Electron-electron Scattering in the Diffusive Regime and Dyakonov-Perel Theory: a case study of spin decoherence in n-type GaAs [PDF]

arXiv, 2023
We argue that in the ensemble Monte Carlo approach, the spin decoherence caused by electron-electron interactions in n-type bulk GaAs at room temperature, according to Dyakonov-Perel theory, is mainly induced by the electron density while electron-electron scattering itself does not directly affect spin lifetime but instead influences it through any ...
arxiv  

Magnetic Order in Kondo-Lattice Systems due to Electron-Electron Interactions [PDF]

AIP Conf. Proc., Vol. 1074, p. 62 (2008), 2008
The hyperfine interaction between the electron spin and the nuclear spins is one of the main sources of decoherence for spin qubits when the nuclear spins are disordered. An ordering of the latter largely suppresses this source of decoherence. Here we show that such an ordering can occur through a thermodynamic phase transition in two-dimensional (2D ...
arxiv   +1 more source

Computational electronics and electromagnetics [PDF]

, 1997
The Computational Electronics and Electromagnetics thrust area at Lawrence Livermore National Laboratory serves as the focal point for engineering RD engineering analysis and design of high-power components, photonics, and optoelectronics circuit design; EMI susceptibility analysis; and antenna synthesis.
openaire   +4 more sources

Toward a human‐centric co‐design methodology for AI detection of differences between planned and delivered dose in radiotherapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Introduction Many artificial intelligence (AI) solutions have been proposed to enhance the radiotherapy (RT) workflow, but limited applications have been implemented to date, suggesting an implementation gap. One contributing factor to this gap is a misalignment between AI systems and their users.
Luca M. Heising, Frank Verhaegen, Stefan G. Scheib, Maria J. G. Jacobs, Carol X. J. Ou, Viola Mottarella, Yin‐Ho Chong, Mariangela Zamburlini, Sebastiaan M. J. J. G. Nijsten, Ans Swinnen, Michel Öllers, Cecile J. A. Wolfs   +11 more
wiley   +1 more source

Practical challenges in data‐driven interpolation: Dealing with noise, enforcing stability, and computing realizations

International Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley   +1 more source

Controlled Electromagnetic Field Based Safety System for Handheld Circular Saw

Sensors, 2022
This paper presents the design of a safety system based on controlled electromagnetic field (CEMF) sensing technology to prevent accidents caused by power tools, especially related to handheld circular saws.
Pedro Teixidó, José M. Hinojo-Montero, Juan Antonio Gómez-Galán, Fernando Muñoz-Chavero, Trinidad Sánchez-Rodríguez, Juan Aponte   +5 more
doaj   +1 more source

Long-lived oscillatory incoherent electron dynamics in molecules: trans-polyacetylene oligomers [PDF]

I. Franco, A. Rubio and P. Brumer, New J. Phys. 15, 043004 (2013), 2013
We identify an intriguing feature of the electron-vibrational dynamics of molecular systems via a computational examination of \emph{trans}-polyacetylene oligomers. Here, via the vibronic interactions, the decay of an electron in the conduction band resonantly excites an electron in the valence band, and vice versa, leading to oscillatory exchange of ...
arxiv   +1 more source