Results 31 to 40 of about 1,292 (181)

An Experimental Study of a Conventional Cylindrical Oscillating Water Column Wave Energy Converter: Fixed and Floating Devices

Energies
Oscillating water column (OWC) wave energy converters (WECs) are very popular types of wave energy converters due to their practical implementations, their versatility in deployment in different marine environments, and their high reliability in wave ...
Wanan Sheng, George Aggidis
doaj   +1 more source

Oscillating Water Column Geometrical Factors and System Performance: A Review

IEEE Access, 2022
Ocean waves that impact along the coast are among the most promising renewable energy sources that can be extracted from the environment. The ocean’s energy can be extracted by a few methods and converted from kinetic energy into electrical energy
Dzul Hafez Yacob, Shamsul Sarip, Hazilah Mad Kaidi, Jorge Alfredo Ardila-Rey, Firdaus Muhammad-Sukki   +4 more
doaj   +1 more source

Refining techniques for high‐frequency monitoring of chlorophyll a fluorescence in estuarine systems

Limnology and Oceanography: Methods, EarlyView.
Abstract Concentrations of the photosynthetic pigment chlorophyll a are commonly used as a proxy for phytoplankton biomass in aquatic systems. Traditional methods for extracting chlorophyll a in discrete samples limit measurement frequency, while in situ sensor technology provides high frequency chlorophyll a fluorescence measurements at a more ...
Nicole Dix, Hannah Nicklay, Jacob Cianci‐Gaskill, Shannon Dunnigan Kimmel, J. Silas Tanner, Kim Cressman, Steven E. McMurray, Yoshimi M. Rii, Rikke Jeppesen, Rachel Guy, Erik Smith   +10 more
wiley   +1 more source

Green indoor optical wireless communication systems: Pathway towards pervasive deployment

Digital Communications and Networks, 2021
The Optical Wireless Communication (OWC) offers the high capacity of optical fiber communication with the flexibility of wireless communication. Since it works in the optical region of the ElectroMagnetic (EM) spectrum, it guarantees safety and security ...
C. Jenila, R.K. Jeyachitra
doaj   +1 more source

Scale effects in physical modelling of a generalized OWC [PDF]

Ocean Engineering, 2018
Physical modelling is extensively applied in the study of Oscillating Water Column (OWC) devices since it furnishes a reliable evaluation of nonlinear effects, as those induced by the interaction between surface waves and air inside the pneumatic chamber.
Viviano, Antonino, Naty, Stefania, Foti, Enrico   +2 more
openaire   +3 more sources

Big Bird: A global dataset of birds in drone imagery annotated to species level

Remote Sensing in Ecology and Conservation, EarlyView.
Drones are a valuable tool for surveying birds, but manually detecting and identifying birds in drone images is costly. We assembled a diverse dataset of 23 865 images of birds captured with 21 different drones across 11 countries. We labelled 4824 of these images, detailing the location, species, posture category, age category, and sex of 49 990 birds
Joshua P. Wilson, Tatsuya Amano, Thomas Bregnballe, Alejandro Corregidor‐Castro, Roxane Francis, Diego Gallego‐García, Jarrod C. Hodgson, Landon R. Jones, César R. Luque‐Fernández, Dominik Marchowski, John McEvoy, Ann E. McKellar, W. Chris Oosthuizen, Christian Pfeifer, Martin Renner, José Hernán Sarasola, Mateo Sokač, Roberto Valle, Adam Zbyryt, Richard A. Fuller   +19 more
wiley   +1 more source

Experimental Investigation of the Hydrodynamic Performance of Land-Fixed Nearshore and Onshore Oscillating Water Column Systems with a Thick Front Wall

Energies, 2022
Most experimental research on land-fixed Oscillating Water Column (OWC) systems assume that the OWC-water wave interaction happens with waves that propagate normally towards the device.
Ayrton Alfonso Medina Rodríguez, Gregorio Posada Vanegas, Rodolfo Silva Casarín, Edgar Gerardo Mendoza Baldwin, Beatriz Edith Vega Serratos, Felipe Ernesto Puc Cutz, Enrique Alejandro Mangas Che   +6 more
doaj   +1 more source

Waterbird zoogeochemical effects shape wetland nutrient dynamics and algal communities in Laurentian Great Lakes coastal freshwater wetlands

Journal of Animal Ecology, EarlyView.
Distinct waterbird species influence nutrient cycling through guano contributions in Great Lakes coastal wetlands. Waterbird‐derived nutrients favour distinct algal communities and wetland sediments rapidly remove waterbird nutrients via biogeochemical processes.
Taylor C. Michael, Paisley Kostick, Matthew A. Wuensch, David M. Costello   +3 more
wiley   +1 more source

Wave Energy Conversion through Oscillating Water Columns: A Review

Journal of Marine Science and Engineering
An oscillating water column (OWC) is designed for the extraction and conversion of wave energy into usable electrical power, rather than being a standalone renewable energy source.
R. Gayathri, Jen-Yi Chang, Chia-Cheng Tsai, Tai-Wen Hsu   +3 more
doaj   +1 more source

Multiuser Beam Steering OWC System Based on NOMA

2023 23rd International Conference on Transparent Optical Networks (ICTON), 2023
In this paper, we propose applying Non-Orthogonal Multiple Access (NOMA) technology in a multiuser beam steering OWC system. We study the performance of the NOMA-based multiuser beam steering system in terms of the achievable rate and Bit Error Rate (BER).
Yu Zeng, Sanaa H. Mohamed, Ahmad Adnan Qidan, Taisir E. H. El-Gorashi, Jaafar M. H. Elmirghani   +4 more
openaire   +2 more sources