Results 41 to 50 of about 63,362 (250)

Joint power control and user grouping mechanism for efficient uplink non‐orthogonal multiple access‐based 5G communication: Utilising the Lèvy‐flight firefly algorithm

IET Networks, EarlyView., 2023
We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh, Khaled F. Hayajneh, Haythem Bany Salameh, Raed Al Athamneh, Yaser Jararweh   +4 more
wiley   +1 more source

Inexpensive Aerial Photogrammetry for Studies of Whales and Large Marine Animals

Frontiers in Marine Science, 2017
We describe a simple system enabling accurate measurement of swimming marine mammals and other large vertebrates from low-altitude single-frame photogrammetry via inexpensive modifications to a “prosumer” unmanned aerial vehicle (UAV) equipped with ...
Stephen M. Dawson, M. Hamish Bowman, Eva Leunissen, Pascal Sirguey   +3 more
doaj   +1 more source

A Multi-Dimensional Examination of Foraging Habitat Use by Gray Whales Using Long Time-Series and Acoustics Data

Animals, 2022
Gray whales (Eschrichtius robustus) show high site fidelity to feeding and breeding areas. The whales’ annual cycle could be learned or be driven by factors such as prey abundance or ocean conditions. Long-term line transect and photo-identification data
Rianna E. Burnham, David A. Duffus
doaj   +1 more source

Vessel noise affects beaked whale behavior : results of a dedicated acoustic response study [PDF]

, 2012
© The Author(s), 2012. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in PLoS ONE 7 (2012): e42535, doi:10.1371/journal.pone.0042535.Some beaked whale species are ...
Quick, Nicola, Di Marzio Nancy, Boyd, Ian L., Moretti David, Quick, Nicola Jane, Pirotta, Enrico, Peter Tyack, Moretti, David, Tyack, Peter L., Pirotta Enrico, DiMarzio, Nancy A., Enrico Pirotta, David Moretti, Tyack Peter, Milor, Rachel, Nancy Di Marzio, Boyd Ian, Milor Rachael, Quick Nicola, Nicola Quick, Hastie, Gordon, Ian Boyd, Tyack, Peter Lloyd, Boyd, Ian, Hastie Gordon, Milor, Rachael, Rachael Milor, Hastie, Gordon Drummond, Moretti, David J., Dimarzio, Nancy, Gordon Hastie   +30 more
core   +1 more source

Anatomy and variation in the paraphyletic Mosasaurus lemonnieri assemblage from the Craie phosphatée de ciply, Belgium

The Anatomical Record, EarlyView.
Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe, Hallie P. Street‐Sampson, Takuya Konishi, Michael W. Caldwell   +3 more
wiley   +1 more source

Using Computer Modelling and Virtual Reality to Explore the Ideological Dimensions of Thule Whalebone Architecture in Arctic Canada

Internet Archaeology, 2005
Arctic archaeologists have long suspected that the whalebones used to construct semi-subterranean winter houses by Thule culture peoples were symbolically resonant.
Peter C. Dawson, Richard Levy
doaj   +1 more source

Classification of large acoustic datasets using machine learning and crowdsourcing : application to whale calls [PDF]

, 2014
A.M.v.B.B. acknowledges support from the Sea Mammal Research Unit at the University of St. Andrews (Professor Ian Boyd) and Woods Hole Oceanographic Institution for the Whale FM project. P.T.
Filipa Samarra, Von Benda-Beckmann, A.M., Patrick Miller, Robert Simpson, Miller, P., Simpson, R., Benda-Beckmann, A.M. von, John Wallin, Lior Shamir, Tyack, P., Samarra, F., Carol Yerby, C., Carol Yerby, Alexander M. von Benda-Beckmann, Peter Tyack, Wallin, J., Yerby, C., Shamir, L.   +17 more
core   +1 more source

Technology Transfer to Underwater Archaeology: The LAHKE Project at the Submerged Neolithic Site of La Marmotta

Archaeological Prospection, EarlyView.
ABSTRACT This document is a report on the field application of non‐invasive geophysical and robotic prospecting methods at the submerged Neolithic site of La Marmotta (Lake Bracciano, Italy), within the LAHKE (LAke Heritage Knowledge and Exploration) project; the study focuses on the practical validation, adaptation and transfer of existing ...
dell' Erba Ramiro, Cupertino Giacomo, Cipollini Angelo, Luciano Blasi, Quattrucci Luca   +4 more
wiley   +1 more source

Species‐Specific qPCR Assays for Detecting Blue, Fin, and Sei Whales (Balaenoptera spp.) From Offshore Environmental DNA Samples

Environmental DNA
Globally, mysticete species are still recovering from the population depletions caused by commercial whaling. In addition to overcoming the effects of population bottlenecks, large whale species, including blue (Balaenoptera musculus), fin (Balaenoptera ...
Chloe V. Robinson, Emma J. Laqua, Katherine Gavrilchuk, David Gaspard, Amy Migneault, Julien Delarue, Bertrand Charry   +6 more
doaj   +1 more source

Partners or passengers? Revisiting the association between diatoms and aquatic animals

Biological Reviews, EarlyView.
ABSTRACT Numerous studies have revealed the importance of research on the communities capable of colonizing animal surfaces (epibionts) and the animals on which they live (basibionts). Very few studies have considered epizoic diatoms, and there are gaps and biases in our knowledge, including the choice of basibionts, the methods used, and the habitats ...
Gianluca Vacca, Elisa Falasco, Francesca Bona   +2 more
wiley   +1 more source