Results 11 to 20 of about 6,977 (222)

AMBWO: An Augmented Multi-Strategy Beluga Whale Optimization for Numerical Optimization Problems [PDF]

Biomimetics
Beluga whale optimization (BWO) is a swarm-based metaheuristic algorithm inspired by the group behavior of beluga whales. BWO suffers from drawbacks such as an insufficient exploration capability and the tendency to fall into local optima.
Guoping You, Zengtong Lu, Zhipeng Qiu, Hao Cheng   +3 more
doaj   +2 more sources

Trajectory Planning of Spraying Robot Based on Multi Strategy Improved Beluga Optimization Algorithm [PDF]

Sensors
In this paper, a trajectory planning method based on an improved beluga whale optimization algorithm is proposed for the trajectory planning of plasma-spraying robot with complex surfaces. Firstly, the system architecture, kinematics model and trajectory
Yifang Wen, Renzhong Wang, Ting Huang
doaj   +2 more sources

Marine diesel engine piston ring fault diagnosis based on LSTM and improved beluga whale optimization

Alexandria Engineering Journal
The operational state of piston rings in marine diesel engines significantly influences the overall performance of the machinery. However, traditional data-driven diagnosis methods have problems with relying on manual feature extraction and failing to ...
Bingwu Gao, Jing Xu, Zhenrui Zhang, Yanxin Liu, Xiaonan Chang   +4 more
doaj   +3 more sources

Estimating reproductive and juvenile survival rates when offspring ages are uncertain: A novel multievent mark‐resight model with beluga whale case study

Methods in Ecology and Evolution, 2023
Understanding the survival and reproductive rates of a population is critical to determining its long‐term dynamics and viability. Mark‐resight models are often used to estimate these demographic rates, but estimation of survival and reproductive rates ...
Gina K. Himes Boor, Tamara L. McGuire, Amanda J. Warlick, Rebecca L. Taylor, Sarah J. Converse, John R. McClung, Amber D. Stephens   +6 more
doaj   +1 more source

Cementum structure in Beluga whale teeth [PDF]

Acta Biomaterialia, 2017
A large fraction of the volume of Beluga whale (Delphinapterus leucas) teeth consists of cementum, a mineralized tissue which grows throughout the life of the animal and to which the periodontal ligaments attach. Annular growth bands or growth layer groups (GLGs) form within Beluga cementum, and this study investigates GLG structure using X-ray ...
S R, Stock, L A, Finney, A, Telser, E, Maxey, S, Vogt, J S, Okasinski   +5 more
openaire   +2 more sources

Population dynamics of the threatened Cumberland Sound beluga (Delphinapterus leucas) population

Arctic Science, 2021
Current scientific evidence indicates that the threatened Cumberland Sound beluga whale (Delphinapterus leucas (Pallas, 1776)) population is genetically differentiated and spatially segregated from other beluga whale populations. This population has been
Cortney A. Watt, Marianne Marcoux, Steven H. Ferguson, Mike O. Hammill, Cory J.D. Matthews   +4 more
doaj   +1 more source

Machine learning models development for accurate multi-months ahead drought forecasting: Case study of the Great Lakes, North America.

PLoS ONE, 2023
The Great Lakes are critical freshwater sources, supporting millions of people, agriculture, and ecosystems. However, climate change has worsened droughts, leading to significant economic and social consequences.
Mohammed Majeed Hameed, Siti Fatin Mohd Razali, Wan Hanna Melini Wan Mohtar, Norinah Abd Rahman, Zaher Mundher Yaseen   +4 more
doaj   +1 more source

The Electrocardiogram of a Beluga Whale [PDF]

Circulation, 1953
In the course of our study of the comparative anatomy and physiology of the mammalian heart, it became necessary to develop a technic to obtain the electrocardiogram of the largest mammal of all. Because of its availability, the small white Beluga whale in northern waters was the first object of this research, prior to obtaining the record of a large ...
R L, KING, J L, JENKS, P D, WHITE
openaire   +2 more sources

Photographic evidence of tagging impacts for two beluga whales from the Cumberland Sound and western Hudson Bay populations

Arctic Science, 2022
Beluga whale (Delphinapterus leucas (Pallas, 1776)) movements, habitat use, and diving behaviour have been studied using satellite-linked transmitters for decades.
Kasey P. Ryan, Stephen D. Petersen, Steven H. Ferguson, C-Jae C. Breiter, Cortney A. Watt   +4 more
doaj   +1 more source

Acoustic behavior of melon-headed whales varies on a diel cycle. [PDF]

, 2015
Many terrestrial and marine species have a diel activity pattern, and their acoustic signaling follows their current behavioral state. Whistles and echolocation clicks on long-term recordings produced by melon-headed whales (Peponocephala electra) at ...
Baumann-Pickering, Simone, Hildebrand, John A, Roch, Marie A, Schnitzler, Hans-Ulrich, Wiggins, Sean M   +4 more
core   +4 more sources