Results 121 to 130 of about 1,807,617 (309)

3D manipulation with scanning near field optical nanotweezers [PDF]

open access: yes, 2013
Recent advances in Nanotechnologies have prompted the need for tools to accurately and non-invasively manipulate individual nano-objects. Among possible strategies, optical forces have been foreseen to provide researchers with nano-optical tweezers capable to trap a specimen and move it in 3D.
arxiv   +1 more source

Optical performance monitoring in DSP-based coherent optical systems

open access: yesOptical Fiber Communications Conference and Exhibition, 2015
We review the requirements for optical performance monitoring in high capacity DSP based coherent optical transmission systems. Recent proposed schemes for OSNR and CD monitoring for coherent systems are summarized.
Zhenhua Dong   +6 more
semanticscholar   +1 more source

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

open access: yesJournal 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   +11 more
wiley   +1 more source

Quality control for the first large areas of triple-GEM chambers for the CMS endcaps [PDF]

open access: yes, 2018
The CMS Collaboration plans to equip the very forward muon system with triple-GEM detectors that can withstand the environment of the High-Luminosity LHC.This project is at the final stages of R&D and moving to production. A large area of several 100 m 2
A. Ahmad   +157 more
core   +2 more sources

From 2D to 3D gamma passing rate tolerance and action limits for patient‐specific quality assurance in volumetric‐modulated arc therapy

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Volumetric modulated arc therapy (VMAT) requires an accurate patient‐specific quality assurance (PSQA) program. In clinical practice, this is usually performed using the γ‐index and the two‐dimensional gamma passing rate (2D %GP). A three‐dimensional (3D) index incorporating the patient anatomy could be more useful for the 3D dose ...
Christos Zarros   +6 more
wiley   +1 more source

Enhancing the Credibility of the Optical Performance Monitor With Adversarial Training

open access: yesIEEE Access, 2020
The existing optical performance monitoring (OPM) scheme based on deep neural network has no selection capability of the input data. They always accept and process all, which may result in serious monitoring errors and reduce the credibility of the ...
Xiaojie Fan   +8 more
doaj   +1 more source

Autonomic disaggregated multilayer networking [PDF]

open access: yes, 2018
Focused on reducing capital expenditures by opening the data plane to multiple vendors without impacting performance, node disaggregation is attracting the interest of network operators.
Gifre Renom, Lluís   +3 more
core   +2 more sources

Modelling of a double‐scattering proton therapy nozzle using the FLUKA Monte Carlo code and analysis of linear energy transfer in patients treated for prostate cancer

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Background The dose‐averaged linear energy transfer (LETD) in proton therapy (PT) has in pre‐clinical studies been linked to the relative biological effectiveness (RBE) of protons. Until recently, the most common PT delivery method in prostate cancer has been double‐scattered PT, with LETD only available through dedicated Monte Carlo (MC ...
Rasmus Klitgaard   +7 more
wiley   +1 more source

Motion process monitoring using optical flow–based principal component analysis-independent component analysis method

open access: yesAdvances in Mechanical Engineering, 2017
In this article, for the first time, the optical flow and principal component analysis followed independent component analysis are combined for monitoring the motion process of robotic-arm-based system.
Song Fan   +3 more
doaj   +1 more source

Multi-impairment and multi-channel optical performance monitoring [PDF]

open access: yes, 2008
Next generation optical networks will evolve from static to dynamically reconfigurable architectures to meet the increasing bandwidth and service requirements.
Meflah, L.
core  

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