Results 61 to 70 of about 9,393 (232)

A Broadband Beamformer Suitable for UUV to Detect the Tones Radiated from Marine Vessels

Sensors, 2018
In this paper, the issue that the underwater unmanned vehicle (UUV) with a sonar array achieves the passive detection of vessel targets by detecting the tones radiated from the targets is considered.
Shilong Ma, Yilin Wang, Nan Zou, Guolong Liang   +3 more
doaj   +1 more source

Notice of Violation of IEEE Publication Principles: Robust Adaptive Beamforming Using Support Vector Machines

IEEE Access, 2020
A robust adaptive beamformer based on the support vector machines is proposed to solve the rapid degradation of the performance of minimum variance distortionless response beamformer when the steering vector is mismatched. The proposed beamformer assumes
Xiaoying Ren, Yingmin Wang, Tuo Guo, Qi Wang   +3 more
doaj   +1 more source

Regularised Hyper Parameter Bi Level Optimisation With Continual Learning Based Deep Neural Network for Beamforming in Ultra‐Wide Band System

IET Communications, Volume 20, Issue 1, January/December 2026.
This research proposes a Regularised Hyperparameter Bilevel Optimisation with Continual Learning‐based Deep Neural Network (RHBO‐CLDNN) for beamforming in an Ultra‐Wide Band (UWB) system. The RHBO ensures the hyperparameter efficiency at both upper and lower levels, which allows DNN to fine‐tune the unique characteristics of the UWB system, which leads
Pradeep Kumar Siddanna, Bidare Divakarachari Parameshachari, Dharmanna Shivappa Lamani   +2 more
wiley   +1 more source

Impact of a moving noise masker on speech perception in cochlear implant users.

PLoS ONE, 2015
ObjectivesPrevious studies investigating speech perception in noise have typically been conducted with static masker positions. The aim of this study was to investigate the effect of spatial separation of source and masker (spatial release from masking ...
Tobias Weissgerber, Tobias Rader, Uwe Baumann   +2 more
doaj   +1 more source

A Comprehensive Review of Additive Manufacturing for Space Applications: Materials, Advances, Challenges, and Future Directions

Advanced Engineering Materials, Volume 27, Issue 22, November 2025.
Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos, Eleni Papadopoulou, Grigorios Kostopoulos, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria Gkara, Chara C. Mitropoulou, Nikos D. Lagaros   +8 more
wiley   +1 more source

Optical Neuromorphic Technology Catalyzes the Next‐Generation Mobile Communication Technology

Advanced Intelligent Systems, Volume 7, Issue 11, November 2025.
Advancements in optical computing could revolutionize next‐generation wireless communication. The review highlights the role of photonic integrated circuits in implementing neural network operations and discusses their benefits, such as high computational density.
Xiaoxiong Song, Ziling Fu, Jiajia Wang, Dapeng Wang, Nan Li, Zhenping Hu, Xingyuan Xu   +6 more
wiley   +1 more source

Uncertainty, Cognitive Control and Theta‐Band Activity: A Relationship That Depends on Metacontrol Requirements

Human Brain Mapping, Volume 46, Issue 14, 01 October 2025.
Uncertainty is typically linked to the need for cognitive control reflected in greater theta band activity. We manipulate uncertainty as a trigger for curiosity in a spatial cueing paradigm. Time–frequency and DICS beamforming results show that uncertainty is not always linked to greater theta band activity.
Seema Prasad, Nasibeh Talebi, Paul Wendiggensen, Moritz Mückschel, Bernhard Hommel, Christian Beste   +5 more
wiley   +1 more source

Nearfield broadband adaptive beamforming [PDF]

ISSPA '99. Proceedings of the Fifth International Symposium on Signal Processing and its Applications (IEEE Cat. No.99EX359), 2003
A nearfield broadband adaptive beamforming approach based on the modal expansion of the solution to the spherical wave equation is formulated. It provides an efficient parameterization for the nearfield beamforming problem with a single parameter to focus the beamformer to a desired operating radius and a set of modal coefficients to control the ...
T.D. Abhayapala, R.A. Kennedy, R.C. Williamson, D.B. Ward   +3 more
openaire   +1 more source

The Mismatch Negativity Compared: EEG, SQUID‐MEG, and Novel 4Helium‐OPMs

Human Brain Mapping, Volume 46, Issue 14, 01 October 2025.
In this study, we compared the mismatch negativity (MMN), evoked by an auditory oddball paradigm, between EEG, cryogenic SQUID‐MEG, and a novel prototype Helium‐OPM system. Results show high similarity in the evoked time courses and signal‐to‐noise ratios, showing potential for reliable application of OPM‐MEG in MMN research, including routine clinical
Tjerk P. Gutteling, Jérémie Mattout, Sébastien Daligault, Julien Jung, Etienne Labyt, Denis Schwartz, Françoise Lecaignard   +6 more
wiley   +1 more source

Central Pathophysiology and Brain Network Changes Related to Camptocormia in Parkinson's Disease

Movement Disorders, Volume 40, Issue 10, Page 2149-2157, October 2025.
ABSTRACT Background Studies on brain connectivity offer important insights into the changes that occur in central network diseases such as Parkinson's disease (PD). Camptocormia, a condition characterized by abnormal flexion of the trunk, often occurs in advanced PD, but its underlying mechanisms are not yet clear.
Tauqeer Anjum, Jan Raethjen, Hao Ding, Nabin Koirala, Rüdiger Pryss, Robin Wolke, Chi Wang Ip, Günther Deuschl, Jens Volkmann, Nils G. Margraf, Muthuraman Muthuraman   +10 more
wiley   +1 more source