Results 101 to 110 of about 22,703 (241)

Interspecific association of bumblebees (Hymenoptera, Apidae, Bombus) in Omsk region during the beginning of flight activity

open access: yesИзвестия высших учебных заведений. Поволжский регион: Естественные науки, 2022
Background. Of great importance for bumblebees is the availability of a food base in two significant periods of life: at the beginning of flight activity after leaving wintering and at the end of flight activity in the period before wintering.
I.V. Kraynov   +2 more
doaj   +1 more source

Improved Depth Map Estimation from Stereo Images based on Hybrid Method [PDF]

open access: yes, 2012
In this paper, a stereo matching algorithm based on image segments is presented. We propose the hybrid segmentation algorithm that is based on a combination of the Belief Propagation and Mean Shift algorithms with aim to refine the disparity and depth ...
Breznan, M.   +4 more
core   +1 more source

Dynamical Lorentz and CPT symmetry breaking in a 4D four-fermion model

open access: yes, 2008
In a 4D chiral Thirring model we analyse the possibility that radiative corrections may produce spontaneous breaking of Lorentz and CPT symmetry. By studying the effective potential, we verified that the chiral current $\bar\psi\gamma^{\mu} \gamma_5 \psi$
da Silva, A. J.   +3 more
core   +1 more source

Garden, greenhouse, or climate chamber? Experimental conditions influence whether genetic differences are phenotypically expressed

open access: yesPlant Biology, EarlyView.
Expression of genetic differences depends on the experimental environment as seen in flowering time differences between ancestors and descendants that emerge in climate chambers but not in greenhouse or garden conditions. Abstract Common‐environment experiments are important to study genetically based phenotypic variation within and among plant ...
P. Karitter   +6 more
wiley   +1 more source

Longevity of starved bumblebee queens (Hymenoptera: Apidae) is shorter at high than low temperatures

open access: yesEuropean Journal of Entomology, 2014
Northern bumblebees (Hymenoptera: Apidae) with annual lifecycles depend both on energy stores remaining in their fat body after diapause and a few spring flowering plants.
Salla-Riikka VESTERLUND, Jouni SORVARI
doaj   +1 more source

Culture in Bumblebees

open access: yesPeer Community in Evolutionary Biology, 2017
A recommendation of: Alem S, Perry CJ, Zhu X, Loukola OJ, Ingraham T, Sovik E, Chittka L Associative Mechanisms Allow for Social Learning and Cultural Transmission of String Pulling in an Insect https://doi.org/10.1371/journal.pbio ...
Caroline Nieberding   +1 more
openaire   +1 more source

Seeing Through an Ant's Eyes: Do Entomopathogenic Fungi Extend Their Cognition to Their Hosts?

open access: yesTopics in Cognitive Science, EarlyView.
Abstract Post‐cognitivist approaches recognize cognition as a phenomenon that involves not just brains but all the sensorimotor apparatus of organisms. This means that brains are not always required for the emergence of cognition and that every organism can, in principle, be cognitive, unlocking a theoretical framework to explain the complex adaptive ...
André Geremia Parise   +2 more
wiley   +1 more source

Do Insects Have Emotions? Some Insights from Bumble Bees

open access: yesFrontiers in Behavioral Neuroscience, 2017
While our conceptual understanding of emotions is largely based on human subjective experiences, research in comparative cognition has shown growing interest in the existence and identification of “emotion-like” states in non-human animals.
David Baracchi   +3 more
doaj   +1 more source

The flexible, the stereotyped and the in‐between: putting together the combinatory tool use origins hypothesis

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1235-1254, June 2026.
ABSTRACT Tool use research has long made the distinction between tool using that is considered learned and flexible, and that which appears to be instinctive and stereotyped. However, animals with an inherited tool use specialisation can exhibit flexibility, while tool use that is spontaneously innovated can be limited in its expression and facilitated
Jennifer A. D. Colbourne   +1 more
wiley   +1 more source

On the Complex Network Structure of Musical Pieces: Analysis of Some Use Cases from Different Music Genres

open access: yes, 2017
This paper focuses on the modeling of musical melodies as networks. Notes of a melody can be treated as nodes of a network. Connections are created whenever notes are played in sequence.
A Berenzweig   +29 more
core   +1 more source

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