Results 121 to 130 of about 5,633 (244)

Exploitation of Frequency Information in Continuous Active Sonar

, 2016
In pulsed active sonar, short duration coded waveforms insonify the area of interest. The low duty cycle limits detection opportunities and decreases average energy.
Schecklman, Scott, Zurk, Lisa, Rouseff, Daniel   +2 more
core  

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

Advanced Materials, Volume 38, Issue 36, 26 June 2026.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel, Haotian Lu, Jiayan Zhang, Desheng Yao, Ananya Bhardwaj, Ramiro Contreras, Karim Sabra, Xiaoyu (Rayne) Zheng   +7 more
wiley   +1 more source

Active Military Sonar and Marine Mammals: Events and References

, 2007
The deployment of active sonar by the U.S. Navy and its potential impacts on marine mammals has been an ongoing issue of intense debate; regulatory, legislative, and judicial activity; and international concern.
Buck, Eugene H., Clavert, Kori, Calvert, Kori   +2 more
core  

Thermoelectric Properties of a Diketopyrrolopyrrole Polymer With Radical Pending Units

Advanced Electronic Materials, Volume 12, Issue 12, 22 June 2026.
The successful incorporation of TEMPO radicals as side‐chain groups onto the conjugated backbone of an n‐type polymer significantly enhanced the doping efficiency of N‐DMBI via a hydrogen transfer doping mechanism. ABSTRACT Organic n‐type polymers usually suffer from relatively low electrical conductivity which hampers their application as an active ...
Jiang Jing, Qian Liu, Ilknur Hatice Eryilmaz, Loup Chopplet, Melissa Berteau‐Rainville, Marc Daniel Paulik, Zuchong Yang, Nicolas Battaglini, Vincent Noël, Benoit Piro, Tim Leydecker, Steven E. Bottle, Aung Ko Ko Kyaw, Christopher R McNeill, Giorgio Mattana, Prashant Sonar, Emanuele Orgiu   +16 more
wiley   +1 more source

Risk Management in Agrifood Supply Chains: The Role of Technological Innovation

Business Strategy &Development, Volume 9, Issue 2, June 2026.
ABSTRACT Agrifood supply chains are increasingly exposed to environmental, operational, and food safety risks, while technological innovation is attracting growing attention for its potential to improve supply chain resilience and management. However, limited attention has been devoted to understanding how technological applications may contribute to ...
Roberto Mauriello, Livio Cricelli, Mario Scanu, Serena Strazzullo   +3 more
wiley   +1 more source

Geographic Variation in Diving Behaviour and Skin Isotope Ratios of Northern Bottlenose Whales, Hyperoodon ampullatus

Ecology and Evolution, Volume 16, Issue 6, June 2026.
High‐resolution multi‐sensor tag data from northern bottlenose whale populations in the northeast and northwest Atlantic showed differences in resting and foraging time budgets and behaviour. Skin biopsy stable isotopes corroborated likely dietary differences. Variability between populations has far‐reaching relevance for ecology and conservation, with
Sascha K. Hooker, Eilidh Siegal, Tessa Plint, Laura J. Feyrer, Tomoko Narazaki, Kagari Aoki, Matt Bivins, Patrick J. O. Miller   +7 more
wiley   +1 more source

Tracking-by-Detection Algorithm for Underwater Target Based on Improved Multi-Kernel Correlation Filter

Remote Sensing
Joint detection and tracking of weak underwater targets are challenging problems whose complexity is intensified when the target is disturbed by reverberation.
Wenrong Yue, Feng Xu, Juan Yang
doaj   +1 more source

Whole System Ecohydrological Change Following Natural Flood Management and a Five‐Year Beaver Reintroduction Trial

Ecohydrology, Volume 19, Issue 4, June 2026.
ABSTRACT Once‐common beavers have been absent from the British landscape for centuries, but wild beaver populations have returned in recent years as part of reintroduction schemes, including releases into monitored enclosures. In North Yorkshire, such a release of Eurasian beavers took place in 2019.
Mark W. Smith, Alan Puttock, Megan J. Klaar, Huw Thomas, Lori Lawson Handley, Richard Brazier, Gareth Bradbury, Ambroise Baker, Ann Hanson, Nicholas Gibbons, Keith Gittens, Tom Spencer, Cath Bashforth   +12 more
wiley   +1 more source

Striation–Correlation-Based Beamforming for Enhancing the Interference Structure of the Scattered Sound Field in Deep Water

Journal of Marine Science and Engineering
Considering that the information contained in the interference structure of the “target-receiver” path in active sonar is crucial for remote sensing of the target position or the environmental information, this paper studies the method for coherent ...
Jincong Dun, Changpeng Liu, Shihong Zhou, Yubo Qi, Shuanghu Liu   +4 more
doaj   +1 more source

Adaptive Beamforming for Active Sonar Imaging.

, 2012
As of today, sonar imaging is the most effective means of documenting the subsea environment. Existing sonar imaging systems generally rely on conventional beamforming methods to form the image. While conventional beamformers are robust and simple, they leave many of the challenges of sonar imaging unresolved.
openaire   +2 more sources