Results 11 to 20 of about 17,921 (226)

From birds to bees: applying video observation techniques to invertebrate pollinators

open access: yesJournal of Pollination Ecology, 2012
Observation is a critical element of behavioural ecology and ethology.  Here, we propose a similar set of techniques to enhance the study of the diversity patterns of invertebrate pollinators and associated plant species.
C J Lortie, Amber Budden, Anya Reid
doaj   +1 more source

Speckle Space–Time Covariance in High-contrast Imaging

open access: yesThe Astronomical Journal, 2023
We introduce a new framework for point-spread function subtraction based on the spatiotemporal variation of speckle noise in high-contrast imaging data where the sampling timescale is faster than the speckle evolution timescale.
Briley Lewis   +4 more
doaj   +1 more source

Scattering of gravitational and electromagnetic waves off AdS 2 × S 2 in extreme Reissner-Nordstrom

open access: yesJournal of High Energy Physics, 2018
The direct product of two-dimensional anti-de Sitter spacetime with a two-sphere is an exact solution of four-dimensional Einstein-Maxwell theory without a cosmological constant.
Achilleas P. Porfyriadis
doaj   +1 more source

Strain-Compensated InGaAsP Superlattices for Defect Reduction of InP Grown on Exact-Oriented (001) Patterned Si Substrates by Metal Organic Chemical Vapor Deposition. [PDF]

open access: yes, 2018
We report on the use of InGaAsP strain-compensated superlattices (SC-SLs) as a technique to reduce the defect density of Indium Phosphide (InP) grown on silicon (InP-on-Si) by Metal Organic Chemical Vapor Deposition (MOCVD).
Bowers, John E   +6 more
core   +2 more sources

Reverse active learning based atrous DenseNet for pathological image classification

open access: yesBMC Bioinformatics, 2019
Background Due to the recent advances in deep learning, this model attracted researchers who have applied it to medical image analysis. However, pathological image analysis based on deep learning networks faces a number of challenges, such as the high ...
Yuexiang Li   +3 more
doaj   +1 more source

Structural Procedures in the piece A Twilight's Song by Matthias Pintscher

open access: yesPer Musi, 2020
This paper proposes to analyze structural aspects of the piece A Twlilight’s Song by German composer Matthias Pintscher. The analysis will address three main aspects: motivic development, articulation of the global form and timbre exploration.
Levy Oliveira, João Pedro Oliveira
doaj   +1 more source

Listings of Uncataloged Collections

open access: yesInformation Technology and Libraries, 1970
An operational computerized system used by the UCSB Libraries produces listings of bibliographic data about items in collections where full cataloging treatment is not considered justified.
Fred L. Bellomy, Lies N. Jaccarino
doaj   +1 more source

Near-$$AdS_2$$ AdS2 perturbations and the connection with near-extreme Reissner–Nordstrom

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
The geometry very near the horizon of a near-extreme Reissner–Nordstrom black hole is described by the direct product of a near-$$AdS_2$$ AdS2 spacetime with a two-sphere.
Achilleas P. Porfyriadis
doaj   +1 more source

Isospin symmetry breaking nucleon-nucleon potentials and nuclear structure [PDF]

open access: yes, 1998
Modern nucleon-nucleon (NN) potentials, which accurately fit the nucleon-nucleon scattering phase shifts, contain terms which break isospin symmetry. The effects of these symmetry violating terms on the bulk properties of nuclear matter are investigated.
A Polls   +16 more
core   +3 more sources

A CMOS Probabilistic Computing Chip With Hardware-Aware Learning

open access: yesIEEE Journal on Exploratory Solid-State Computational Devices and Circuits
This work demonstrates a compact probabilistic computing system based on a physics-inspired probabilistic bit (p-bit) architecture with 440 interacting spins configured in a chimera graph and occupying 0.44 mm2 of silicon area.
Jinesh Jhonsa   +6 more
doaj   +1 more source

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