Results 111 to 120 of about 21,978 (259)

A Hybrid Framework for Stock Price Forecasting Using Metaheuristic Feature Selection Approaches and Transformer Models Enhanced by Temporal Embedding and Attention Pruning

open access: yesApplied AI Letters, Volume 7, Issue 1, February 2026.
Workflow of the proposed hybrid BWO‐Transformer framework for stock price prediction. ABSTRACT Accurately predicting stock prices remains a major challenge in financial analytics due to the complexity and noise inherent in market data. Feature selection plays a critical role in improving both computational efficiency and predictive performance. In this
Amirhossein Malakouti Semnani   +3 more
wiley   +1 more source

It’s not black or white - on the range of vision and echolocation in echolocating bats

open access: yesFrontiers in Physiology, 2013
Around 1000 species of bats in the world use echolocation to navigate, orient and detect insect prey. Many of these bats emerge from their roost at dusk and start foraging when there is still light available.
Arjan eBoonman   +2 more
doaj   +1 more source

Discovery of sexual dimorphism of the laryngeal sac in the common minke whale Balaenoptera acutorostrata

open access: yesThe Anatomical Record, Volume 309, Issue 2, Page 397-416, February 2026.
Abstract Mysticetes, or baleen whales, have an air sac on the ventral surface of the larynx known as the “laryngeal sac.” The primary hypothesis regarding this structure's function is that it is involved in sound production. However, several other functions have been proposed, including air recycling, air storage, and even buoyancy control.
Gen Nakamura   +7 more
wiley   +1 more source

Facilitative interspecific interactions in marine vertebrates across scales: from individuals to ecosystems

open access: yesBiological Reviews, Volume 101, Issue 1, Page 519-538, February 2026.
ABSTRACT Facilitative interspecific interactions (FIIs) confer benefits to at least one participant without detriment to others. Although often less emphasised than antagonistic interactions in ecological studies, this review highlights the significant ecological role of FIIs across biological scales – from individual behaviours to population ...
Eduardo Döbber Vontobel   +5 more
wiley   +1 more source

Bats expand their vocal range by recruiting different laryngeal structures for echolocation and social communication

open access: yesPLoS Biology, 2022
Echolocating bats produce very diverse vocal signals for echolocation and social communication that span an impressive frequency range of 1 to 120 kHz or 7 octaves.
Jonas Håkansson   +3 more
doaj  

Vocal mechanisms in birds and bats: a comparative view

open access: yesAnais da Academia Brasileira de Ciências, 2004
Vocal signals play a very important role in the life of both birds and echolocating bats, but these two unrelated groups of flying vertebrates have very different vocal systems.
Suthers Roderick A.
doaj  

A perspective on bats (Chiroptera)

open access: yesKoedoe: African Protected Area Conservation and Science, 2013
With over 130 species, bats are the most diverse group of mammals almost everywhere in sub-Saharan Africa. Since 2000, two books (Monadjem et al. 2010; Taylor 2000) have made it much easier to appreciate this reality.
M. Brock Fenton
doaj  

Data and code for paper "Stealth echolocation in aerial hawking bats reflects a substrate gleaning ancestry"

open access: green, 2023
Daniel Lewanzik   +4 more
openalex   +1 more source

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