Results 101 to 110 of about 128,325 (262)

Frozen Differential Scattering in Reconfigurable Complex Media

Laser &Photonics Reviews, EarlyView.
A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley   +1 more source

Coordinate transformation parameters in Nepal by using neural network and SVD methods

Journal of Geodetic Science, 2019
The present study computes B-W extension model (extended Bursa-Wolf model) coordinate transformation parameters from World Geodetic System 1984 (WGS-84) to the Everest datum namely Everest (1830) and Everest (1956) using records of coordinate ...
Ansari Kutubuddin, Gyawali Prabin, Pradhan Prachand Man, Park Kwan-Dong   +3 more
doaj   +1 more source

Constipation Is Linked to Neuroinflammation in Early Parkinson's Disease

Movement Disorders, EarlyView.
Abstract Background Constipation is a risk factor for the onset and accelerated progression of Parkinson's disease (PD), but the mechanisms underlying this association are unknown. Neuroinflammation in PD has been demonstrated in postmortem and neuroimaging studies; however, its relationship with constipation has not been investigated.
Marta Camacho, Julia C. Greenland, Alexander R.D. Peattie, Lennart R.B. Spindler, Jonathan Holbrook, Lakmini Kahanawita, Tim D. Fryer, Young T. Hong, Caroline H. Williams‐Gray   +8 more
wiley   +1 more source

Linear Convergence of a Frank-Wolfe Type Algorithm over Trace-Norm Balls

, 2017
We propose a rank-$k$ variant of the classical Frank-Wolfe algorithm to solve convex optimization over a trace-norm ball. Our algorithm replaces the top singular-vector computation ($1$-SVD) in Frank-Wolfe with a top-$k$ singular-vector computation ($k ...
Allen-Zhu, Zeyuan, Hazan, Elad, Hu, Wei, Li, Yuanzhi   +3 more
core  

On the Mean‐Field Limit of Consensus‐Based Methods

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Consensus‐based optimization (CBO) employs a swarm of particles evolving as a system of stochastic differential equations (SDEs). Recently, it has been adapted to yield a derivative free sampling method referred to as consensus‐based sampling (CBS). In this paper, we investigate the “mean‐field limit” of a class of consensus methods, including
Marvin Koß, Simon Weissmann, Jakob Zech
wiley   +1 more source

Dynamic RBC‐To‐Membrane Ratio in 129Xe MRI: A Biomarker of Decreased Lung Function in Pulmonary and Vascular Diseases

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To present a method for quantifying dissolved 129Xe spectroscopy using singular value decomposition (SVD) and a dynamic red blood cell (RBC)/membrane ratio as a biomarker of disease. Methods A spectroscopic sequence was performed in 45 subjects (27 healthy, 12 dyspnea of unknown origin [DUO], and 6 pulmonary hypertension [PH ...
Gabriela María García Delgado, Ummul Afia Shammi, Cody Thornburgh, Mia Ruppel, Isabella Parks, Aaron Miller, John P. Mugler III, Talissa A. Altes, Robert P. Thomen   +8 more
wiley   +1 more source

Strong‐Gradient Diffusion‐Weighted Imaging of Prostate Cancer Using an Inside‐Out Nonlinear Gradient Coil

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To demonstrate improved image quality and lesion conspicuity in prostate diffusion‐weighted imaging (DWI) using an inside‐out nonlinear gradient coil that provides locally strong gradients (200–500 500 mT/m) at typical prostate positions.
Horace Z. Zhang, Nahla M. H. Elsaid, Terence W. Nixon, Andrew Dewdney, Dana C. Peters, Jeffrey C. Weinreb, Preston C. Sprenkle, R. Todd Constable, Gigi Galiana   +8 more
wiley   +1 more source

Investigation of the Effectiveness of Programs Optimization Methods for Parallel Computing Systems with GPU

Вестник Дагестанского государственного технического университета: Технические науки
Objective. The paper defines the relevance of the task of increasing the efficiency of software, which in this case is understood as reducing the operating time of the designed software in the process of solving computationally complex problems.
A. Yu. Bezruchenko, V. A. Egunov
doaj   +1 more source

Human action recognition based on back propagation neural network

网络与信息安全学报, 2017
For human action recognition,an algorithm for classifying human action based on back propagation (BP) neural network was proposed.Firstly,singular value decomposition (SVD) was used to extract the singular value of each frame of the video.Then each row ...
Jian ZOU
doaj   +1 more source

The comparison between SVD-DCT and SVD-DWT digital image watermarking

Journal of Physics: Conference Series, 2018
With internet, anyone can publish their creation into digital data simply, inexpensively, and absolutely easy to be accessed by everyone. However, the problem appears when anyone else claims that the creation is their property or modifies some part of that creation.
Kurniawan Wira Handito, Zulfikar Fauzi, Firda Aminy Ma’ruf, Tanti Widyaningrum, Kemas Muslim Lhaksmana   +4 more
openaire   +1 more source