Results 41 to 50 of about 18,394 (152)

Unsupervised underwater shipwreck detection in side-scan sonar images based on domain-adaptive techniques

Scientific Reports
Underwater object detection based on side-scan sonar (SSS) suffers from a lack of finely annotated data. This study aims to avoid the laborious task of annotation by achieving unsupervised underwater object detection through domain-adaptive object ...
Chengwei Wei, Yunfei Bai, Chang Liu, Yuhe Zhu, Caiju Wang, Xiaomao Li   +5 more
doaj   +1 more source

Mapping River Bed Topography in Whitewater Rapids Using Bathymetric LiDAR

River Research and Applications, EarlyView.
ABSTRACT Bathymetric LiDAR captures river topography efficiently for clear and shallow water, but for mountain rivers, whitewater rapids still pose challenges. This study proposes a novel method to enable the extraction of bottom returns specifically in turbulent whitewater sections.
Jan Rhomberg‐Kauert, Theresa Himmelsbach, Florian Pöppl, Lucas Dammert, Martin Pfennigbauer, Gottfried Mandlburger   +5 more
wiley   +1 more source

Analysis of within subjects variability in mouse ultrasonic vocalization: Pups exhibit inconsistent, state-like patterns of call production [PDF]

, 2016
Mice produce ultrasonic vocalizations (USV) in multiple communicative contexts, including adult social interaction (e.g., male to female courtship), as well as pup calls when separated from the dam. Assessment of pup USV has been widely applied in models
Dougherty, Joseph D, Rieger, Michael A
core   +4 more sources

Scalable low‐cost seabed landers: the missing link for sustained, integrated, long‐term observations in dynamic shallow seas

Remote Sensing in Ecology and Conservation, EarlyView.
Seabed landers, when equipped with a range of biotic and abiotic sensors, offer a non‐invasive and cost‐effective solution for ecosystem‐scale monitoring of Essential Biodiversity Variables (EBVs) and Essential Ocean Variables (EOVs) in dynamic shallow seas.
Arienne Calonge, Roeland Develter, Carlota Muñiz, Clea Parcerisas, Jan Reubens, Wieter Boone, Klaas Deneudt, Elisabeth Debusschere   +7 more
wiley   +1 more source

Unmanned surface vehicle escape strategy based on hybrid sampling deep Q-network

Zhongguo Jianchuan Yanjiu
ObjectiveAiming at the encirclement tactics adopted by enemy ships, this study focuses on the problem of planning an escape strategy when an unmanned surface vehicle (USV) is surrounded by enemy ships.
Yuanpeng YANG, Lifei SONG, Jiaqi MAO, Yi LI, Houjing CHEN   +4 more
doaj   +1 more source

Characterization of acoustic detection efficiency using an unmanned surface vessel as a mobile receiver platform

Animal Biotelemetry, 2023
Studies involving acoustic telemetry typically use stationary acoustic receivers arranged in an array or grid. Unmanned surface vehicle (USV)-based mobile receivers offer advantages over the latter approach: the USV can be programmed to autonomously ...
Eric M. Gaskell, Tyler R. Funnell, Christopher M. Holbrook, Darryl W. Hondorp, Xiaobo Tan   +4 more
doaj   +1 more source

High-frequency ultrasonic speckle velocimetry in sheared complex fluids

, 2003
High-frequency ultrasonic pulses at 36 MHz are used to measure velocity profiles in a complex fluid sheared in the Couette geometry. Our technique is based on time-domain cross-correlation of ultrasonic speckle signals backscattered by the moving medium.
A. Colin, Ackerson, Bandyopadhyay, Barnes, Berson, Bohs, Bonnefous, Brito, Britton, Cappelaere, Christopher, Diat, Echevarría, Ferrara, Ferrara, Foster, Goddard, Groisman, Hanlon, Hein, Kaisar Al, L. Bécu, Larson, Mair, Manneville, Mordant, Mueth, Olmsted, Ouriev, Ozaki, Peschard, Porte, Roux, S. Manneville, Salmon, Salmon, Salmon, Salmon, Schmitt, Sierro, Spenley, Sugiura, Takeda, Takeda, Turnbull, Wheeler, Wunenburger, Zuikova   +47 more
core   +3 more sources

Beyond 5G and Non‐terrestrial Network (NTN) Integrated Architecture: Access Challenges for Expanding Artificial Intelligence of Things (AIoT)

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This study analyzes the architecture of the beyond 5G‐NTN (Non‐terrestrial Network) integrated network and presents the technical, legal, and regulatory challenges and considerations for expanding the Artificial Intelligence of Things (AIoT) ecosystem.
Byung Woon Kim, Ga Eun Choi
wiley   +1 more source

A Cooperative Hunting Method for Multi-USV Based on the A* Algorithm in an Environment with Obstacles

Sensors, 2023
A single unmanned surface combatant (USV) has poor mission execution capability, so the cooperation of multiple unmanned surface ships is widely used. Cooperative hunting is an important aspect of multi USV collaborative research.
Zhihao Chen, Zhiyao Zhao, Jiping Xu, Xiaoyi Wang, Yang Lu, Jiabin Yu   +5 more
doaj   +1 more source

The what, which, when, why and who of Off responses in the auditory system

The Journal of Physiology, EarlyView.
Abstract figure legend In this article, we will first review ‘What’ different mechanisms are involved in the generation of Off responses at the sub‐cortical and cortical level of the auditory system. Then, we evaluate ‘Which’ stimulus properties elicit Off responses at the different levels of the auditory system.
Jean‐Marc Edeline, Robert C. Liu
wiley   +1 more source