Results 1 to 10 of about 6,438 (222)

Larger body size leads to greater female beluga whale ovarian reproductive activity at the southern periphery of their range [PDF]

open access: goldEcology and Evolution, 2021
Identification of phenotypic characteristics in reproductively successful individuals provides important insights into the evolutionary processes that cause range shifts due to environmental change.
Steven H. Ferguson   +5 more
doaj   +2 more sources

Environmental drivers of beluga whale distribution in a changing climate: a case study of summering aggregations in the Mackenzie Estuary and Tarium Niryutait Marine Protected Area [PDF]

open access: goldArctic Science, 2022
During summer, the Eastern Beaufort Sea beluga whale (Delphinapterus leucas (Pallas, 1776)) population aggregates in the waters of the Mackenzie Estuary and Tarium Niryutait Marine Protected Area (TNMPA).
Aurélie Noel   +5 more
doaj   +2 more sources

On factors for separation of the stock of beluga whale Delphinapterus leucas in the Anadyr Gulf of the Bering Sea

open access: diamondИзвестия ТИНРО, 2014
New eco-ethological data on the Anadyr stock of beluga whales are presented based on 14-year (2000-2013) studies by methods of satellite tracking telemetry, multi-spectral aerial surveys and genetic analysis, as well as traditional and ecosystem-based ...
Denis I. Litovka, Ludmila N. Khitzova
doaj   +3 more sources

Economic load dispatch solution of large-scale power systems using an enhanced beluga whale optimizer

open access: yesAEJ - Alexandria Engineering Journal, 2023
The aim of the optimization economic load dispatch (ELD) problem is to assign the optimal generated power of the thermal units for cost reduction with satisfying the loading of the operational constraints.
Mohamed Hosny Hassan   +2 more
exaly   +3 more sources

Improved beluga whale optimization algorithm based cluster routing in wireless sensor networks

open access: goldMathematical Biosciences and Engineering
Cluster routing is a critical routing approach in wireless sensor networks (WSNs). However, the uneven distribution of selected cluster head nodes and impractical data transmission paths can result in uneven depletion of network energy. For this purpose,
Hao Yuan   +6 more
doaj   +2 more sources

The summer soundscape of a shallow-water estuary used by beluga whales in the western Canadian Arctic

open access: goldArctic Science, 2020
The soundscape is an important habitat component for marine animals. In the Arctic, marine conditions are changing rapidly due to sea ice loss and increased anthropogenic activities such as shipping, which will influence the soundscape.
William D. Halliday   +5 more
doaj   +2 more sources

Beluga whale (Delphinapterus leucas) vocalizations and call classification from the eastern Beaufort Sea population [PDF]

open access: bronze, 2015
Funding was provided by the Bureau of Ocean Energy Management under InterAgency Agreement M09PG00016. E.C.G. was supported by a National Research Council (National Academy of Sciences) Postdoctoral Fellowship.Beluga whales, Delphinapterus leucas, have a ...
Ellen C. Garland   +2 more
openalex   +3 more sources

Bronchial Tree System Analysis of Live Beluga Whale (Delphinapterus leucas) Using Bronchoscopy [PDF]

open access: goldVeterinary Sciences
Cetaceans, including beluga whales (Delphinapterus leucas), have high morbidity and mortality rates due to bacterial or fungal lower respiratory infections.
Takashi Kamio   +7 more
doaj   +2 more sources

Hyperparameter optimization ResNet by improved Beluga Whale Optimization.

open access: goldPLoS ONE
The parameter values of neural networks will directly affect the performance of the network, so it is very important to choose the appropriate parameter tuning method to improve the performance of the neural network.
Huan Liu   +4 more
doaj   +2 more sources

A hybrid framework for mean-CVaR portfolio selection under jump-diffusion processes: Combining cross-entropy method with beluga whale optimizat

open access: goldAIMS Mathematics
In this paper, a new hybrid meta-heuristic algorithm called CEBWO (cross-entropy method and beluga whale optimization) is presented to solve the mean-CVaR portfolio optimization problem based on jump-diffusion processes.
Guocheng Li   +3 more
doaj   +2 more sources

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