Results 101 to 110 of about 19,818 (257)

Observation of Optical Precursor in Time‐Energy‐Entangled W Triphotons

open access: yesAdvanced Science, Volume 12, Issue 27, July 17, 2025.
This study reports the observation of optical precursors at the triphoton level through the SSWM process. By appropriately adjusting the optical depth (OD), optical precursors are effectively separated from the main wave through utilizing the slow‐light effect to manipulate the triphoton temporal correlations in the group delay regime.
Zhou Feng   +5 more
wiley   +1 more source

ON THE USE OF CITSCI AND VGI IN NATURAL HAZARD ASSESSMENT [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Abstract. The developments in the geospatially-enabled mobile communication technologies have opened new horizons in many fields of geosciences research, especially in those where data collection, processing and interpretation are time consuming and costly.
S. Kocaman, C. Gokceoglu
openaire   +4 more sources

Quantifying Flood Water Levels Using Image-Based Volunteered Geographic Information

open access: yesRemote Sensing, 2020
Many people use smartphone cameras to record their living environments through captured images, and share aspects of their daily lives on social networks, such as Facebook, Instagram, and Twitter.
Yan-Ting Lin   +4 more
doaj   +1 more source

Hydrogen Sensing via Heterolytic H2 Activation at Room Temperature by Atomic Layer Deposited Ceria

open access: yesChemSusChem, Volume 18, Issue 13, July 1, 2025.
Ultrathin atomic layer deposited ceria films (<20 nm) are capable of H2 heterolytic activation at room temperature, undergoing a significant reduction regardless of the absolute pressure, as measured under in‐situ conditions by near ambient pressure X‐ray photoelectron spectroscopy.
Carlos Morales   +15 more
wiley   +1 more source

Note on resonance varieties [PDF]

open access: yes, 2011
We study the irreducibility of resonance varieties of graded rings over an exterior algebra E with particular attention to Orlik-Solomon algebras. We prove that for a stable monomial ideal in E the first resonance variety is irreducible. If J is an Orlik-
Thieu, Phong Dinh
core  

Gaps in full homomorphism order

open access: yes, 2017
We characterise gaps in the full homomorphism order of graphs.Comment: 9 pages, extended abstract for Eurocomb ...
Fiala, Jiří   +2 more
core   +1 more source

Divide and Fuse: A Re-ranking Approach for Person Re-identification

open access: yes, 2017
As re-ranking is a necessary procedure to boost person re-identification (re-ID) performance on large-scale datasets, the diversity of feature becomes crucial to person reID for its importance both on designing pedestrian descriptions and re-ranking ...
Bai, Song   +3 more
core   +1 more source

Usability of VGI for validation of land cover maps [PDF]

open access: yesInternational Journal of Geographical Information Science, 2015
Volunteered Geographic Information (VGI) represents a growing source of potentially valuable data for many applications, including land cover map validation. It is still an emerging field and many different approaches can be used to take value from VGI, but also many pros and cons are related to its use. Therefore, since it is timely to get an overview
Cidália C. Fonte   +4 more
openaire   +6 more sources

Unpacking the role of volunteered geographic information in disaster management: focus on data quality

open access: yesGeomatics, Natural Hazards & Risk
The increasing occurrence of disasters worldwide has motivated researchers to continuously evaluate potential technological advances to support disaster management (DM) as well as emergency response. The advent of Volunteered Geographic Information (VGI)
Marina Tavra   +3 more
doaj   +1 more source

Introduction to social sensing and big data computing for disaster management

open access: yesInternational Journal of Digital Earth, 2019
Traditional data collection methods such as remote sensing and field surveying often fail to offer timely information during or immediately following disaster events.
Zhenlong Li   +2 more
doaj   +1 more source

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