Results 91 to 100 of about 3,475,694 (250)

Seabed characterization with multi-band interferometric sonar

, 2020
Mapping of the seabed is important for numerous applications, including the detection of buried objects such as cables, pipelines, unexploded ordnance (UXO), off-shore engineering, and soil remediation.
Beckers, A.L.D., Vossen, R. van, Mulders, I,, Duijster, A.J., Burg, D.W. van der, Sande, J.J.M. van de   +5 more
core  

Stationauxiliary operation technology for sonar digital image processing based on machine vision [PDF]

Zhihui kongzhi yu fangzhen
Passive sonar operator of a ship needs to concentrate on observing sonar interface and underwater or surface target situation for a long time to extract key information manually maritime operations when surface vessels pass through sensitive waters ...
DAI Zhonghua, JIN Qiaoyuan, YANG Ding, CHENG Yu
doaj   +1 more source

Movement Responses of Seals During Pile Driving for Offshore Wind Farm Construction

Animal Conservation, EarlyView.
Despite rapid growth of the renewable energy industry to meet climate change targets, predictions of population‐level impacts on wildlife are currently hindered by a limited understanding of individual behavioural responses to these developments.
Katherine F. Whyte, Gordon D. Hastie, Carol E. Sparling, Bas Binnerts, Debbie J. F. Russell   +4 more
wiley   +1 more source

Anti-submarine warfare with continuously active sonar

, 2011
Existing surveillance sonar systems for anti-submarine warfare (ASW) use a pulsed sonar deployed at a low duty cycle. Continuously active sonar (CAS) is of special interest since the technique could provide better detection performance than conventional ...
Vossen, R. van, Spek, E. van der, Beerens, S.P.   +2 more
core  

CDK4/6 Inhibitors in the Management of Hormone Receptor‐Positive (HR+)/Human Epidermal Growth Factor Receptor 2‐Negative (HER2−) Advanced Breast Cancer in Indonesia: Challenges, Opportunities, and Recommendations

Asia-Pacific Journal of Clinical Oncology, EarlyView.
Evidence‐informed recommendations emphasize the integration of CDK4/6 inhibitors with endocrine therapy as a central component in the management of HR+/HER2− advanced breast cancer in Indonesia. Expanding access and facilitating integration within national treatment frameworks are crucial to improve outcomes and reduce disparities in care.
Sonar Soni Panigoro, Samuel J. Haryono, Prihantono Prihantono, Dedy Hermansyah, Sumadi Lukman Anwar, Yohana Azhar, Febriyanto Kurniawan, Putu Anda Tusta Adiputra, Kristanto Yuli Yarso, Asdi Wihandono   +9 more
wiley   +1 more source

Modeling potential masking of echolocating sperm whales exposed to continuous 1–2 kHz naval sonar

, 2021
Modern active sonar systems can (almost) continuously transmit and receive sound, which can lead to more masking of important sounds for marine mammals than conventional pulsed sonar systems transmitting at a much lower duty cycle.
Isojunno, S., Kvadsheim, P.H., Miller, P.J.O., Tyack, P.L., Zandvliet, M., Lam, F.P.A., Ainlsie, M., Benda-Beckman, A.M. von, Wensveen, P.J.   +8 more
core  

Topology‐based Visual Analysis of Hydrothermal Plumes

Computer Graphics Forum, EarlyView.
Abstract Hydrothermal plumes are turbulent structures of intense heat and mineral smoke that rise and disperse into the deep ocean. Existing models generally characterize these systems as a single axisymmetric plume originating from a point source. However, this assumption breaks down in weakly venting, spatially distributed systems, where low‐flux ...
Adhitya Kamakshidasan, Tushar Jain, Karen Bemis, Valerio Pascucci   +3 more
wiley   +1 more source

Examining the Impact of Derelict Pots on Blue Crab (Callinectes sapidus) Catch and Harvest Within a Recreational Fishery

Fisheries Management and Ecology, EarlyView.
ABSTRACT Derelict fishing gear can negatively affect marine ecosystems through mortality in coastal environments. This study explored the impact of derelict and active crab pots on recreational blue crab (Callinectes sapidus) catch rates and landings in a Mid‐Atlantic estuary by deploying experimental pots in four habitat strata within three sections ...
Randy J. Feris Serrano, Jennifer E. Repp, Kaylin M. Regan, Arthur C. Trembanis, Matthew J. Oliver, Edward A. Hale   +5 more
wiley   +1 more source

Realistic Sonar Image Simulation Using Deep Learning for Underwater Object Detection

, 2020
This paper proposes a method that synthesizes realistic sonar images using a Generative Adversarial Network (GAN). A ray-tracing-based sonar simulator first calculates semantic information of a viewed scene, and the GAN-based style transfer algorithm ...
Yu, Son-Cheol, Sung, Minsung, MEUNGSUK, LEE, Kim, Byeongjin, Kim, Jason, Kim, Taesik, Kim, Juhwan   +6 more
core   +1 more source

DCE-Net: An Improved Method for Sonar Small-Target Detection Based on YOLOv8

Journal of Marine Science and Engineering
Sonar is the primary tool used for detecting small targets at long distances underwater. Due to the influence of the underwater environment and imaging mechanisms, sonar images face challenges such as a small number of target pixels, insufficient data ...
Lijun Cao, Zhiyuan Ma, Qiuyue Hu, Zhongya Xia, Meng Zhao   +4 more
doaj   +1 more source