Results 71 to 80 of about 560,854 (291)

A Coded Aperture Compressive Imaging Array and Its Visual Detection and Tracking Algorithms for Surveillance Systems

open access: yesSensors, 2012
In this paper, we propose an application of a compressive imaging system to the problem of wide-area video surveillance systems. A parallel coded aperture compressive imaging system is proposed to reduce the needed high resolution coded mask requirements
Hanxiao Wu, Jing Chen, Yongtian Wang
doaj   +1 more source

Bifractality of the Devil's staircase appearing in the Burgers equation with Brownian initial velocity

open access: yes, 1996
It is shown that the inverse Lagrangian map for the solution of the Burgers equation (in the inviscid limit) with Brownian initial velocity presents a bifractality (phase transition) similar to that of the Devil's staircase for the standard triadic ...
A. Noullez   +7 more
core   +3 more sources

Motion of Contact Line of a Crystal Over the Edge of Solid Mask in Epitaxial Lateral Overgrowth [PDF]

open access: yes, 2004
Mathematical model that allows for direct tracking of the homoepitaxial crystal growth out of the window etched in the solid, pre-deposited layer on the substrate is described.
de Gennes   +32 more
core   +2 more sources

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Asymmetric optical cryptosystem for multiple images based on devil’s spiral Fresnel lens phase and random spiral transform in gyrator domain

open access: yesScientific Reports, 2021
An asymmetric cryptosystem is presented for encrypting multiple images in gyrator transform domains. In the encryption approach, the devil’s spiral Fresnel lens variable pure phase mask is first designed for each image band to be encrypted by using devil’
Hang Chen   +3 more
doaj   +1 more source

A simple method for fabricating phase-shifted fibre Bragg gratings with flexible choice of centre wavelength [PDF]

open access: yes, 2009
A simple technique for fabricating phase-shifted fibre Bragg gratings (PSFBGs) without the use of a phase-shifted phase mask is presented. Two, 3-mm long, standard fibre Bragg gratings (FBGs) were inscribed sequentially in singlemode fibre at the same
Chehura, Edmon   +2 more
core   +1 more source

Automated FRAP microscopy for high‐throughput analysis of protein dynamics in chromatin organization and transcription

open access: yesFEBS Open Bio, EarlyView.
RoboMic is an automated confocal microscopy pipeline for high‐throughput functional imaging in living cells. Demonstrated with fluorescence recovery after photobleaching (FRAP), it integrates AI‐driven nuclear segmentation, ROI selection, bleaching, and analysis.
Selçuk Yavuz   +6 more
wiley   +1 more source

A Thermoregulatory Flexible Phase Change Nonwoven for All-Season High-Efficiency Wearable Thermal Management

open access: yesNano-Micro Letters, 2023
Highlights The first assembled flexible phase change nonwoven is reported by wet-spinning. The unprecedented thermal properties of such flexible phase change nonwoven are achieved.
Hanqing Liu   +11 more
doaj   +1 more source

Lyot-based Ultra-Fine Pointing Control System for Phase Mask Coronagraphs

open access: yes, 2013
High performance coronagraphic imaging at small inner working angle requires efficient control of low order aberrations. The absence of accurate pointing control at small separation not only degrades coronagraph starlight rejection but also increases the
Baudoz, Pierre   +5 more
core   +1 more source

Achromatic dual-zone phase mask stellar coronagraph [PDF]

open access: yesAstronomy & Astrophysics, 2003
This paper presents a generalization of the Roddier & Roddier Phase Mask coronagraph for polychromatic obser- vations. It is shown that using a dual-zone phase mask, combined with complex apodization, both phase and size chromatism can be compensated simultaneously to produce high extinction of a point source over large bandwidths, for example the ...
Soummer, R., Dohlen, K., Aimé, Carole
openaire   +2 more sources

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