Results 31 to 40 of about 335,663 (313)

A Deep Recurrent Learning-Based Region-Focused Feature Detection for Enhanced Target Detection in Multi-Object Media

open access: yesSensors, 2023
Target detection in high-contrast, multi-object images and movies is challenging. This difficulty results from different areas and objects/people having varying pixel distributions, contrast, and intensity properties.
Jinming Wang   +9 more
doaj   +1 more source

Organic matter remineralization in marine sediments : A Pan-Arctic synthesis [PDF]

open access: yes, 2017
Natural Environment Research Council (GrantNumber(s): NE/J023094/1; Grant recipient(s): Ursula Witte) ArcticNet (GrantNumber(s): Hotspot biodiversity project; Grant recipient(s): Philippe Archambault)Peer reviewedPublisher ...
Aller   +166 more
core   +1 more source

The Discovery of Extended Thermal X-ray Emission from PKS 2152-699: Evidence for a `Jet-cloud' Interaction

open access: yes, 2004
A Chandra ACIS-S observation of PKS 2152-699 reveals thermal emission from a diffuse region around the core and a hotspot located 10" northeast from the core.
Chun Ly   +6 more
core   +2 more sources

On the orbital period of the cataclysmic variable RZ Leonis [PDF]

open access: yes, 2001
In this research note we present a time-resolved study of the Balmer emission lines of RZ Leo. From the analysis of the radial velocities we find an orbital period of 0.07651(26) d.
C. Tappert .,   +6 more
core   +2 more sources

Atlantic Forest scenarios under the parameters of forestry laws

open access: yesCiência e Agrotecnologia
Remote sensing allows for identification of regularities and irregularities in land use and land coverage (LULC) change in relation to environmental legislation.
Liliane Garcia da Silva   +3 more
doaj   +1 more source

Brazilian Mangroves: Blue Carbon Hotspots of National and Global Relevance to Natural Climate Solutions

open access: yesFrontiers in Forests and Global Change, 2022
Mangroves are known for large carbon stocks and high sequestration rates in biomass and soils, making these intertidal wetlands a cost-effective strategy for some nations to compensate for a portion of their carbon dioxide (CO2) emissions.
Andre S. Rovai   +3 more
doaj   +1 more source

Hotspot advance speed - hotspot size/core-hotspot distance relation

open access: yesRwanda Journal, 2016
We examined the evolution of extragalactic radio sources using the observed corehotspot distance and hotspot size. Analysis indicates a fairly strong positive correlation in the ratio of core-hotspot distance to hotspot size between that of the approaching arm and the receding arm with a correlation coefficient of r ~ 0.7.
openaire   +3 more sources

Hotspot Advance Speed - Hotspot Size/Core-Hotspot Length Relation

open access: yesInternational Letters of Chemistry, Physics and Astronomy, 2015
We examined the evolution of extragalactic radio sources using the observed core-hotspot length and hotspot size. Analysis indicates a fairly strong positive correlation in the ratio of core-hotspot length to hotspot size between that of the approaching arm and the receding arm with a correlation coefficient of r ~ 0.7.
openaire   +1 more source

Spatio-Temporal Sentiment Hotspot Detection Using Geotagged Photos

open access: yes, 2016
We perform spatio-temporal analysis of public sentiment using geotagged photo collections. We develop a deep learning-based classifier that predicts the emotion conveyed by an image. This allows us to associate sentiment with place.
Ekman P.   +4 more
core   +1 more source

Enhanced Polarized Emission from the One-Parsec-Scale Hotspot of 3C 84 as a Result of the Interaction with Clumpy Ambient Medium [PDF]

open access: yes, 2017
We present Very Long Baseline Array polarimetric observations of the innermost jet of 3C$\sim$84 (NGC$\sim$1275) at 43$\sim$GHz. A significant polarized emission is detected at the hotspot of the innermost re-started jet, which is located $\sim$1 pc ...
Asada, K.   +6 more
core   +2 more sources

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