Results 81 to 90 of about 54,243 (312)

Deep learning‐based super‐resolution reconstruction and improved YOLOv9 for efficient benthos detection: a case study at Lake Hamana, Japan

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a UAV‐based framework that integrates deep learning‐based super‐resolution reconstruction and an enhanced YOLO detector to improve centimetre‐scale benthic organism monitoring. Using hermit crabs in Lake Hamana, a coastal lagoon in Japan, as a case study, the method substantially enhanced small‐object detection performance ...
Fan Zhao, Bangzhang Ma, Dianhan Xi, Jiaqi Wang, Yijia Chen, Yongying Liu, Xinlei Shao, Mowen Zhang, Guocheng Zhang, Jundong Chen, Katsunori Mizuno   +10 more
wiley   +1 more source

Use of Multibeam and Dual-Beam Sonar Systems to Observe Cavitating Flow Produced by Ferryboats: In a Marine Renewable Energy Perspective

Journal of Marine Science and Engineering, 2017
With the prospect to deploy hydrokinetic energy converters in areas with heavy boat traffic, a study was conducted to observe and assess the depth range of cavitating flow produced by ferryboats in narrow channels.
Francisco Francisco, Nicole Carpman, Irina Dolguntseva, Jan Sundberg   +3 more
doaj   +1 more source

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

Method for environmental protection of fish from going into water discharge facilities [PDF]

Caspian Journal of Environmental Sciences
Spillway structures of hydroelectric power plants, dams, and other large hydroelectric facilities are characterized by high volumes of discharged water. Moreover, the discharge can also go in a volley way - when a large volume of water mass is passed in ...
Artur Tumenov, Kuanysh Isbekov, Arkadiy Kim, Dmitry Pilin, Naurzbai Bulekov   +4 more
doaj   +1 more source

SONAR IN EARLY PREGNANCY [PDF]

Journal of Perinatal Medicine, 1981
Prior to the existence of sonar techniques there was no method to proof the existence of a l iving fetus early in pregnancy. Hormon assays such as human chorionic gondotropin, human placental lactogen oestriol and pregnandiol could offer only indirect informations relating to the trophoblast and corpus luteum function. Concerning the fetus there was no
openaire   +2 more sources

The Nexus Between Circular Economy and Sustainable Supply Chain Management: PRISMA Methodology

Sustainable Development, EarlyView.
ABSTRACT The intersection of sustainable supply chain management (SSCM) and circular economy (CE) has attracted increasing academic and practical attention, emphasizing the need for integrated sustainability approaches. This study employs the PRISMA protocol and conceptualizes the CE–SSCM relationship as a dynamic system in which internal capabilities,
Feriel Barkaoui, Khaled Ben abdallah
wiley   +1 more source

Methods for separating the noise produced by the wheels and track during a train pass-by

Railway Engineering Science
Rolling noise is produced by vibration of the wheels and track, induced by their combined surface roughness. It is important to know the relative contributions of the different sources, as this affects noise control strategies as well as acceptance ...
David Thompson, Dong Zhao, Giacomo Squicciarini, Martin Toward, Ester Cierco, Erwin Jansen, Michael Dittrich   +6 more
doaj   +1 more source

Updating the bathymetry of the Maltese Islands : a national-scale marine survey employing interferometric sonar [PDF]

, 2014
Chapter 8The ERDF project detailed a requirment for the scanning of an extensive area of 415 square kilometers employing an interferometric sonar.
Espinal, Carlos A.
core  

Detection of plastic litter using an ARIS sonar

, 2021
Dataset used for the note titled "Detection of plastic litter using an ARIS sonar." Summary: This report describes a first test in April 2021 to use an ARIS sonar to detect macro- and mesoplastic in the water column of the river Waal (a free flowing ...
Collas, dr. F.P.L. (Radboud University) DAI=info:eu-repo/dai/nl/433406372, Flores, N.Y. (Radboud University) DAI=info:eu-repo/dai/nl/433406321   +1 more
core   +1 more source

On Correlating Sonar Images

Robotics: Science and Systems I, 2005
This paper demonstrates that sonar images correlate badly because target geometry and image fringes correlate in different coordinate systems. It is shown that if the receiver is a line array, all point objects have the same image in a coordinate system with axes of range and the sine of target bearing (the (r, s) coordinate system).
Richard J. Rikoski, J. Tory Cobb, Daniel C. Brown   +2 more
openaire   +1 more source