Results 61 to 70 of about 1,758 (166)

MRI estimates of brain iron concentration in normal aging: Comparison of field-dependent (FDRI) and phase (SWI) methods [PDF]

, 2009
Different brain structures accumulate iron at different rates throughout the adult life span. Typically, striatal and brain stem structures are higher in iron concentrations in older than younger adults, whereas cortical white matter and thalamus have ...
Adalsteinsson, Elfar, Pfefferbaum, Adolf, Rohlfing, Torsten, Sullivan, Edith V.   +3 more
core   +1 more source

An Onboard Calibration Technique for Synthetic Aperture Radar Interferometry Using Multisource Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The synthetic aperture radar interferometry (InSAR) is a powerful tool for retrieving the Earth’s geophysical parameters, such as terrain height, displacement and soil moisture.
Yan Yan, Qingjun Zhang, Vito Pascazio, Zhibin Wang, Taoli Yang   +4 more
doaj   +1 more source

Benchmarking and optimisation of Simulink code using Real-Time Workshop and Embedded Coder for inverter and microgrid control applications [PDF]

, 2009
When creating software for a new power systems control or protection device, the use of auto-generated C code via MATLAB Simulink Real-Time Workshop and Embedded Coder toolboxes can be a sensible alternative to hand written C code.
Blair, S. M., Burt, G.M., Roscoe, A. J.
core  

3D modelling with structured light GAMMA calibration [PDF]

, 2014
Structured light method is one of the non-contact measurement methods used for high resolution and high sensitive 3D modeling. In this method, a projector, camera and computer are used.
Okumus, Ibrahim Taner, Sert, Eser, Taskin, Deniz   +2 more
core   +2 more sources

PUformer: A Transformer-Based Network Architecture Design for InSAR Phase Unwrapping

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Phase unwrapping (PU) is a critical step in synthetic aperture radar interferometry (InSAR) applications. Traditional model-based PU methods rely on the empirical phase continuity assumption and thus struggle in the presence of strong noise or abrupt ...
Lifan Zhou, Hanwen Yu, Wei Liu, Li Cheng, Hao Liu, Xin Ye, Huanghao Feng   +6 more
doaj   +1 more source

Breaking barriers: Sunlight‐activated self‐healing polymers with unprecedented photoaging resistance

SusMat, Volume 4, Issue 6, December 2024.
Photochemical self‐healing of polymers is decoupled from the accompanying photoaging effect by introducing carbazolyl‐based dithiocarbamate bonds. The resulting crosslinked polyurethanes exhibit photoaging resistance significantly higher than the control containing commercial stabilizer, and excellent sunlight‐driven self‐healability toward surface and
Yan Mei Li, Ze Ping Zhang, Min Zhi Rong, Ming Qiu Zhang   +3 more
wiley   +1 more source

Integrating spatial modeling-assisted InSAR phase unwrapping with temporal analysis for advanced mine subsidence time series mapping

International Journal of Applied Earth Observations and Geoinformation
This study introduces an alternate spatial-temporal modeling-assisted InSAR time-series analysis method for mine subsidence mapping, aiming to address the large deformation gradients and decorrelation issues.
Alex Hay-Man Ng, Bangjie Wen, Yurong Ma, Li Guo, Yiwei Dai, Hua Wang, Linlin Ge, Zheyuan Du   +7 more
doaj   +1 more source

An iterative distortion compensation algorithm for camera calibration based on phase target [PDF]

, 2017
Camera distortion is a critical factor affecting the accuracy of camera calibration. A conventional calibration approach cannot satisfy the requirement of a measurement system demanding high calibration accuracy due to the inaccurate distortion ...
Feng Gao, Hongyu Ren, Schmalz, Xiangqian Jiang, Yongjia Xu, Zonghua Zhang   +5 more
core   +1 more source

MR Susceptibility Separation for Quantifying Lesion Paramagnetic and Diamagnetic Evolution in Relapsing–Remitting Multiple Sclerosis

Journal of Magnetic Resonance Imaging, Volume 60, Issue 5, Page 1867-1879, November 2024.
Background Multiple sclerosis (MS) lesion evolution may involve changes in diamagnetic myelin and paramagnetic iron. Conventional quantitative susceptibility mapping (QSM) can provide net susceptibility distribution, but not the discrete paramagnetic and diamagnetic components.
Ziyan Zhu, Nashwan Naji, Javad Hamidi Esfahani, Jeff Snyder, Peter Seres, Derek J. Emery, Michelle Noga, Gregg Blevins, Penelope Smyth, Alan H. Wilman   +9 more
wiley   +1 more source

Measurement of the Dispersion of χ(3)$\chi ^{(3)}$ of SiO2${\rm SiO}_2$ and SiN Across the THz and Far‐Infrared Frequency Bands

Laser &Photonics Reviews, Volume 18, Issue 11, November 2024.
Terahertz (THz) radiation sources using two‐color femtosecond plasmas in air are advancing coherent spectroscopy and strong‐field physics. A novel method combining air‐biased coherent detection (ABCD) and solid‐state biased detection (SSBCD) is introduced to measure third‐order nonlinearity in fused silica and silicon nitride.
Binbin Zhou, Mattias Rasmussen, Soheil Zibod, Siqi Yan, Narwan Kabir Noori, Oliver Nagy, Yunhong Ding, Simon Jappe Lange, Ksenia Dolgaleva, Robert W. Boyd, Peter Uhd Jepsen   +10 more
wiley   +1 more source