Results 21 to 30 of about 4,744 (201)
Basic and Applied Ecology, 2022 Many bumblebee species are declining due to a loss of semi-natural habitats in agricultural landscapes resulting in diminished forage and nest sites. Anecdotal experience indicates that bumblebees nest in straw bales, but scientific evidence is lacking ...
Sandra A.M. Lindström +2 more
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Ecology and Evolution, 2020 Bumblebee populations are declining. Factors that impact the size and success of colonies act by either limiting resource availability (bottom‐up regulation) or causing mortality, for example, pesticides, disease, and possibly predation (top‐down ...
Bethany R. Roberts +2 more
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Rotating BTZ-like black hole and central charges in Einstein-bumblebee gravity
European Physical Journal C: Particles and Fields, 2023 We obtain an exact rotating BTZ-like black hole solution by solving the corresponding gravitational field equations and the bumblebee motion equations in Einstein-bumblebee gravity theory.
Chikun Ding +5 more
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BumbleBee: A Transformer for Music
CoRR, 2021 We will introduce BumbleBee, a transformer model that will generate MIDI music data . We will tackle the issue of transformers applied to long sequences by implementing a longformer generative model that uses dilating sliding windows to compute the attention layers. We will compare our results to that of the music transformer and Long-Short term memory
Lucas Fenaux, Maria Juliana Quintero
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Metric-affine bumblebee gravity: classical aspects
European Physical Journal C: Particles and Fields, 2021 We consider the metric-affine formulation of bumblebee gravity, derive the field equations, and show that the connection can be written as Levi-Civita of a disformally related metric in which the bumblebee field determines the disformal part.
Adrià Delhom +4 more
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Braneworlds in bumblebee gravity
Nuclear Physics B, 2023 We investigate thick-brane solutions within the five-dimensional bumblebee gravity in the presence of a real scalar field. Specifically, we implement the Lorentz symmetry breaking scenario within this context and obtain brane-like structures.
M.A. Marques +3 more
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Interspecific Variation in Bumblebee Performance on Pollen Diet: New Insights for Mitigation Strategies. [PDF]
PLoS ONE, 2016 Bumblebees (i.e. Bombus genus) are major pollinators of flowering wild plants and crops. Although many species are currently in decline, a number of them remain stable or are even expanding.
Romain Moerman +4 more
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Influence of Pollination Technique on Greenhouse Tomato Production
Journal of Agricultural and Marine Sciences, 2003 An experiment was carried out to study the effects of four pollination techniques; Bumblebees (Bombus terrerstris L.), plant growth bioregulator (PGB) (Parachlorophenoxy acetic acid), hand vibration, and control (natural pollination) on tomato ...
I.K. Nazer, M.A. Kasrawi, Y.Z. Al-Attal
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Gap perception in bumblebees [PDF]
Journal of Experimental Biology, 2018 Abstract A number of insects fly over long distances below the natural canopy where the physical environment is highly cluttered consisting of obstacles of varying shape, size and texture. While navigating within such environments animals need to perceive and disambiguate environmental features that might obstruct their flight. The most
Ravi, Sridhar +6 more
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Evidence for Handedness in Bumblebees [PDF]
Journal of Insect Behavior, 2001 We describe a simple study of how bumblebees (Bombus spp.) behave when visiting florets which are arranged in a circle around a vertical inflorescence. In four species of bees, individuals showed a tendency for rotation in the same direction around each inflorescence on successive visits, i.e., each individual tended to go either clockwise or ...
Kells, Andrea.R., Goulson, Dave
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