Results 51 to 60 of about 163,355 (259)

Risks of Time and Chronology as an Underpinning Infrastructure for Critical Systems: Emerging Chronorisks and Chronosecurity Needs

open access: yesJournal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.
ABSTRACT Time and chronology form the invisible architecture upon which modern civilization depends, governing synchronization across markets, power grids, communication networks, transportation, and defense. Yet, this shared temporal framework, engineered through atomic clocks, satellites, and digital synchronization, faces growing vulnerabilities ...
Bilal M. Ayyub
wiley   +1 more source

Statistical downscaling to predict drought events using high resolution satelite based geopotential data

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Drought prediction is a very challenging work due to high degree of uncertainty in the climate system. Geopotential height has been investigated as one of the dominant variables that can be used to predict drought events.
H. Kuswanto   +2 more
semanticscholar   +1 more source

Nubes de polvo del Sahara. Su presencia en Cuba

open access: yesRevista Cubana de Meteorología, 2015
-Las tormentas de polvo del Sahara incorporan a la atmósfera millones de toneladas de polvo que se desplazan sobre el Atlántico, con una marcada marcha espacio-temporal. El mayor transporte sobre el Mar Caribe se produce durante el verano.
Dr. Eugenio Mojena López   +3 more
doaj  

Methodology for the metric restoration of the historical cartography applied to Francisco Coello's cartografic series of the Royal Site of Aranjuez [PDF]

open access: yes, 2011
Hojas Kilométricas (Kilometric Sheets). Specifically, the study focuses on those sheets referring to the city centre and surrounding area of the Royal Site of Aranjuez, a town in the south of the Province of Madrid.
Asenjo Villar, Juan Carlos   +2 more
core   +1 more source

Effect of Land Cover Type on 3D Deformation Recovery From Synthetically Deformed High Resolution Satellite Optical Imagery

open access: yesEarth and Space Science, Volume 13, Issue 1, January 2026.
Abstract The limits of detection for earthquake surface deformation in the spatial domain have improved with advances in remote sensing imagery data availability, resolution, and analysis. Sub‐pixel correlation and digital elevation model (DEM) differencing from sub‐meter, earthquake‐spanning satellite optical imagery has enhanced surface rupture ...
C. Hanagan, S. B. DeLong, N. G. Reitman
wiley   +1 more source

Espectroradiometría de campo del visible al infrarrojo térmico de muestras con características espectrales singulares [PDF]

open access: yes, 2015
La calibración de sensores a bordo de satélite requiere medidas espectrales de campo simultáneas al paso del satélite. El objetivo de este trabajo es determinar y validar el protocolo óptimo para medir en el campo espectros de reflectividad (del visible ...
Caselles, Diego   +7 more
core  

Seismo‐Acoustic Detection and Localization of Iceberg Collapse in Atka Bay, Antarctica

open access: yesGeophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract On 12 January 2022, an iceberg collapsed at the edge of frozen Atka Bay, Antarctica. The event generated seismic, hydroacoustic, and atmospheric infrasound waves recorded by a local network comprising land‐ and iceshelf‐based seismometers, an underwater hydrophone, and an on‐ice infrasound array.
G. Averbuch   +5 more
wiley   +1 more source

Intervenciones para el carcinoma basocelular cutáneo (revisión Cochrane): Resumen de las principales comparaciones e interpretación práctica de los resultados

open access: yesActas Dermo-Sifiliográficas, 2023
Resumen: Existen numerosas modalidades de tratamiento para el manejo de los carcinomas basocelulares (CBC), pero se desconoce la real eficacia y seguridad entre las alternativas quirúrgicas y no quirúrgicas disponibles.
G. Sanclemente, D.C. Aguirre, J. Thomson
doaj   +1 more source

Índice de vegetação espectral em áreas cafeeiras e sua relação com a precipitação em Três Pontas, Minas Gerais. [PDF]

open access: yes, 2011
Atualmente, eventos e variações climáticas estão sendo intensamente discutidos e, por este motivo, é de fundamental importância a realização de estudos microrregionais, que visam o monitoramento do desenvolvimento de lavouras cafeeiras e a compreensão da
ALVES, H. M. R.   +4 more
core  

Classificação de pastagem no município de Rio Negro, MS. [PDF]

open access: yes, 2020
Neste contexto, este trabalho tem por objetivo classificar diferentes níveis de pastagens degradadas no município de Rio Negro, MS, utilizando para este fim a fusão de imagens dos sensores CCD e HRC do satélite CBERS-2B, ano base ...
LUCIANO, A. C. dos   +1 more
core  

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