Results 111 to 120 of about 23,531 (245)

ZEROES: Robust Derivative-Based Demodulation Method for Optical Camera Communication

open access: yesPhotonics
Most of Optical Camera Communication (OCC) systems benefit from the rolling shutter mechanism of Complementary Metal-Oxide Semiconductor (CMOS) cameras to record the brightness evolution of the Light-Emitting Diode (LED) through dark and bright strips ...
Maugan De Murcia   +2 more
doaj   +1 more source

Targeting Faulty Bearings for an Ocean Turbine Dynamometer [PDF]

open access: yesInternational Journal of Prognostics and Health Management, 2013
A real-time, vibrations-based condition monitoring method used to detect, localize, and identify a faulty bearing in an ocean turbine electric motor is presented in this paper.
David J. Vendittis   +2 more
doaj  

Design of low-power 2FSK demodulation circuit

open access: yes, 2018
Aiming at the complex structure and high power consumption of the existing 2FSK demodulation circuit, this paper designs a simple structure and low power 2FSK demodulation circuit.
Xing Guo Tian   +5 more
core   +1 more source

Image Encoding With Blipped Gradients in an Echo Train

open access: yesMagnetic Resonance in Medicine, Volume 96, Issue 5, Page 2530-2538, November 2026.
ABSTRACT Purpose An MRI scanner was designed and built to encode k‐space points in the spin echoes occurring between 180∘ pulses in an echo train by using blipped B0 gradient pulses applied just prior to those spin echoes. Methods The proposed MRI scanner is a modification of an original design that used TRansmit Array Spatial Encoding (TRASE), a built‐
Logi Vidarsson, Gordon E. Sarty
wiley   +1 more source

Brillouin-based DPSK Demodulation

open access: yes, 2011
We present BER performance of all-optical 10-Gb/s DPSK demodulation obtained by an SBS active filter generated by an incoherent pump, tailored with a FBG properly designed to achieve a 6.7-GHz Gaussian spectral ...
Maddalena Ferrario   +13 more
core   +1 more source

Two‐Photon Fluorescence and Second‐Harmonic Generation Microscopy: Principles and Biomedical Applications

open access: yesJournal of Biophotonics, Volume 19, Issue 10, October 2026.
Compared with single‐photon methods, TPM enables deep‐tissue imaging using near‐infrared light, with excitation confined to the focal plane, thereby reducing photodamage. SHG microscopy images noncentrosymmetric biological structures such as collagen and myosin without fluorescent labels, offering direct structural contrast.
Kausalya Neelavara Makkithaya   +7 more
wiley   +1 more source

The synchronization of the orthogonal frequency division multiplexing system

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The results presented research OFDM system synchronization by using one of the basic properties of the continuous Fourier transform, characterized by the duality between a convolution in the time domain, and multiplying the frequency domain, which is not
R. A. Zhernosekov, V. T. Pershin
doaj  

Mapping Fatty Acid Composition in the Human Knee: Short‐Term Repeatability at 3T

open access: yesJournal of Magnetic Resonance Imaging, Volume 64, Issue 4, Page 1066-1076, October 2026.
ABSTRACT Background Alterations in periarticular lipid composition are implicated in musculoskeletal diseases, yet short‐term reliability of MRI‐based triglyceride composition mapping in the knee is not fully established. Purpose To evaluate 1‐week repeatability of proton‐density fat fraction (PDFF) and triglyceride fatty‐acid composition—saturated ...
Dimitri Martel   +8 more
wiley   +1 more source

Impacts of Mid‐Latitude Ionospheric Dynamics on RF Applications During the November 2025 Superstorm Event

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study demonstrates the intriguing and complex interplay among auroral precipitation, enhanced TEC, density irregularities, and amplitude scintillations observed during the November 2025 superstorm. For the first time, we present observations of strong amplitude scintillation across continental United States (CONUS)—nearly from coast to ...
E. Yizengaw   +7 more
wiley   +1 more source

Radio‐Frequency Front‐End‐Free Hybrid Code‐Division and Space‐Division Wireless Multiplexing Using Space‐Time‐Coding Metasurface

open access: yesNanophotonics, Volume 15, Issue 17, 11 September 2026.
This work constructs a radio‐frequency front‐end‐free hybrid code‐division and space‐division‐multiplexing wireless communication system built on programmable space‐time‐coding metasurfaces. Orthogonal pseudo‐random codes reliably separate overlapped multistream signals that share identical frequency, time, and spatial resources.
Yuzhen Chen   +3 more
wiley   +1 more source

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