Results 81 to 90 of about 2,236 (212)

Selective Modulation of Evidence Accumulation by Hippocampal Theta Oscillations During Mnemonic Decision‐Making

Human Brain Mapping, Volume 47, Issue 7, May 2026.
Hippocampal theta power during memory retrieval predicts evidence accumulation in a mnemonic similarity task. Trial‐level MEG signals were integrated with a linear ballistic accumulator model, revealing that theta oscillations modulate decision dynamics, linking neural variability to memory‐based discrimination performance.
Pei L. Robins, Jessica R. Gilbert, Bruce Luber, Nadia Mustafa, Eesha Bharti, Jeffrey D. Stout, Frederick W. Carver, Zhi‐De Deng   +7 more
wiley   +1 more source

Autocorrelation Seismic Imaging of Northern Taiwan Using Ambient Noise Data

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Over the past few million years, northern Taiwan records a tectonic history of subduction to arc–continent collision followed by post‐collisional collapse. This evolution motivates constraints on crustal structure, including crustal layering and thickness.
Mei Chien, Alan Levander, Po‐Fei Chen
wiley   +1 more source

Performance Improvement for Wideband Beamforming with White Noise Reduction Based on Sparse Arrays [PDF]

, 2017
A method is proposed for reducing the effect of white noise in wideband sparse arrays via a combination of a judiciously designed transformation followed by highpass filters. The reduced noise level leads to a higher signal to noise ratio for the system,
McLernon, DC, Anbiyaei, M.R., Mohammad Reza Anbiyaei, Liu, W, Anbiyaei, MR, Liu, W., Wei Liu, Des C. McLernon, McLernon, D.C.   +8 more
core   +1 more source

A weighted sparse constraint Capon beamforming algorithm

Dianxin kexue, 2018
Aiming at the problem of high sidelobes and nulls was not deep of Capon beamformer,the methods of reducing sidelobes and nulls were studied,a weighted sparse constraint Capon beamforming algorithm was proposed.Firstly,using the correlation operation of ...
Yongxin DU, Xin MA, Baoshan LI, Ling QIN
doaj   +2 more sources

An Assessment of Iterative Reconstruction Methods for Sparse Ultrasound Imaging

Sensors, 2017
Ultrasonic image reconstruction using inverse problems has recently appeared as an alternative to enhance ultrasound imaging over beamforming methods.
Solivan A. Valente, Marcelo V. W. Zibetti, Daniel R. Pipa, Joaquim M. Maia, Fabio K. Schneider   +4 more
doaj   +1 more source

Coprime array‐adaptive beamforming via atomic‐norm‐based sparse recovery

IET Radar, Sonar & Navigation, 2021
Coprime arrays (CPAs) have been found to be an effective configuration for adaptive beamforming (ABF). However, most ABF methods for CPAs are embedded with the spatial spectrum estimation technique, and therefore they usually deteriorate in the case of ...
Yun Cheng, Xinyu Zhang, Tianpeng Liu, Junpeng Shi, Zhen Liu, Panhe Hu, Xiang Li   +6 more
doaj   +1 more source

Millimeter‐Wave Antennas: A Comprehensive State‐of‐the‐Art Review of Design Approaches, Operating Bands, Challenges, and Applications in Body‐Centric and Emerging Systems

Radio Science, Volume 61, Issue 5, May 2026.
Abstract This paper reviews and classifies more than 120 recent contributions on millimeter‐wave (mm‐wave) antennas, with emphasis on their operating bands, design methods, and application domains. It surveys the main mm‐wave frequency ranges and their use in 5G/6G communications, radar and sensing, biomedical and body‐centric systems, imaging, and ...
Sarra Khacha, Chemseddine Zebiri, Mohammad Alibakhshikenari, Djamel Sayad, Issa Elfergani, Muhammad Akmal Chaudhary, Nisar Ahmad Abbasi, Arpan Desai, Jonathan Rodriguez, Takfarinas Saber, Ernesto Limiti   +10 more
wiley   +1 more source

Energy Optimization Algorithms for MIMO-OFDM Based Downlink C-RAN System

IEEE Access, 2019
In this paper, we consider a green communication design in a multiple-input-multiple-output orthogonal frequency-division multiplexing-based downlink cloud radio access network system with per-user quality of service constraints and remote antenna units (
Ruohong Guo, Pengcheng Zhu, Jiamin Li, Dongming Wang, Xiaohu You   +4 more
doaj   +1 more source

Characterization of Near‐Surface Velocity Structure at Haast, New Zealand, Using Distributed Acoustic Sensing (DAS) Measurements of Seismicity

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Distributed acoustic Sensing (DAS) data collected along a 30 km length of telecommunications fiber crossing the Alpine Fault near Haast enable analysis of interactions between fluvioglacial and seismotectonic processes. Here we use DAS recordings of 25 earthquakes to probe near‐surface structure beneath the Haast river valley.
Allan Raudsepp, Calum J. Chamberlain, Voon Hui Lai, Meghan S. Miller, John Townend   +4 more
wiley   +1 more source

Sparse Beamforming for an Ultradensely Distributed Antenna System With Interlaced Clustering

IEEE Access, 2019
Recently, a novel network architecture for a distributed antenna system with interlaced clustering has been proposed to mitigate the cell-edge problem. Under this network architecture, we propose a more practical implementation for ultradensely deployed ...
Xinjiang Xia, Yu Zhang, Jiamin Li, Pengcheng Zhu, Yuanxue Xin, Dongming Wang, Xiaohu You   +6 more
doaj   +1 more source