Results 51 to 60 of about 23,037 (220)

Calculation Method for UKF Target Motion Elements Based on Detection Information of Active and Passive Sonars

水下无人系统学报
The target motion element is important information in anti-submarine warfare, and its calculation results have a great influence on the hitting probability of the target, thus affecting combat decision-making.
Hongrui ZHANG, Jun SU, Qian LI, Bin LI, Xiaoming KOU   +4 more
doaj   +1 more source

Changes in the acoustic activity of beaked whales and sperm whales recorded during a naval training exercise off eastern Canada

Scientific Reports, 2022
Experimental research has shown that beaked whales exhibit strong avoidance reactions to naval active sonars used during antisubmarine warfare training exercises, including cessation of echolocation and foraging activity.
Joy E. Stanistreet, Wilfried A. M. Beslin, Katie Kowarski, S. Bruce Martin, Annabel Westell, Hilary B. Moors-Murphy   +5 more
doaj   +1 more source

Underwater Tone Detection with Robust Coherently-Averaged Power Processor

Journal of Marine Science and Engineering, 2022
The detection of tonal signals with unknown frequencies is an important area of study in underwater signal processing. A common approach to address this issue is to use the Discrete Fourier Transform (DFT) for observations.
Qichen Xie, Cheng Chi, Shenglong Jin, Guanqun Wang, Yu Li, Haining Huang   +5 more
doaj   +1 more source

From snapshots to continuous estimates: Augmenting citizen science with computer vision for fish monitoring

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents an end‐to‐end computer‐vision pipeline for monitoring fish migration using underwater video. We integrate field camera deployment, annotation, model training and automated in‐season counting to generate continuous, high‐resolution data on river herring spawning migration.
Zhongqi Chen, Timm Haucke, Sara Beery, Keven Bennett, Austin Powell, Lydia Zuehsow, Robert Vincent, Linda Deegan   +7 more
wiley   +1 more source

A scheme to analyze the influence of ocean sound propagation on passive sonar target classification and recognition

AIP Advances
The time-varying, space-varying, and frequency-varying characteristics of the marine environment severely affect the classification and recognition of underwater passive sonar targets.
Chunyu Kang, Liufang Fu, Zhijun Xia, Linzhou Xu, Yi Zhang   +4 more
doaj   +1 more source

Tahap penguasaan, sikap dan minat pelajar Kolej Kemahiran Tinggi MARA terhadap mata pelajaran Bahasa Inggeris [PDF]

, 2015
Kajian ini dilakukan untuk mengenal pasti tahap penguasaan, sikap dan minat pelajar Kolej Kemahiran Tinggi Mara Sri Gading terhadap Bahasa Inggeris. Kajian yang dijalankan ini berbentuk deskriptif atau lebih dikenali sebagai kaedah tinjauan.
Kamsur, Nadzalinda
core  

Mobile Robot Lab Project to Introduce Engineering Students to Fault Diagnosis in Mechatronic Systems [PDF]

, 2015
This document is a self-archiving copy of the accepted version of the paper. Please find the final published version in IEEEXplore: http://dx.doi.org/10.1109/TE.2014.2358551This paper proposes lab work for learning fault detection and diagnosis (FDD) in
Fernández-Lozano, Juan Jesús, Garcia-Cerezo, Alfonso J., Gómez-de-Gabriel, Jesús Manuel, Mandow, Anthony   +3 more
core   +2 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

Facilitating macrosystem biology with organismal‐scale airborne remote sensing: Challenges and opportunities

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Emergent ecosystem properties, such as population and trait distributions, biodiversity and energy and water fluxes, occur because of the dynamic interactions of individuals in their environment.
Sarah J. Graves, Ritesh Chowdhry, Meilun Zhou, Ira Harmon, Ben Weinstein, S. K. Morgan Ernest, Alina Zare, Ethan P. White, Stephanie A. Bohlman   +8 more
wiley   +1 more source

Smartphone language and resting‐state EEG indicators of self‐focused attention prospectively predict major depressive disorder risk in adolescents

Journal of Child Psychology and Psychiatry, EarlyView.
Background Central to major depressive disorder (MDD) onset and maintenance is maladaptive self‐focused attention, which can be reliably indexed by greater: (a) usage of first‐person singular pronouns (e.g., I) in natural language and (b) alpha oscillations in resting‐state EEG.
Lilian Y. Li, Nayoung Kim, Esha Trivedi, Sarah E. Sarkas, Madeline M. McGregor, Aishwarya Sritharan, Katherine Durham, Ivan Alekseichuk, Allison M. Letkiewicz, Vijay A. Mittal, David Pagliaccio, Nicholas B. Allen, Randy P. Auerbach, Stewart A. Shankman   +13 more
wiley   +1 more source