Results 141 to 150 of about 134,102,892 (221)

Science Needs for a Terrestrial Biosphere Tipping Point Early Warning System

open access: yesReviews of Geophysics, Volume 64, Issue 4, December 2026.
Abstract Tipping points in the Earth system have the potential to cause major detrimental impacts to the biosphere and societies. Their inherent nonlinearity implies that even relatively small additional increases in external forcing might result in disproportionately large adjustments to components of the Earth system.
Jesse F. Abrams   +13 more
wiley   +1 more source

The Changing Landscape of Good Citizenship in Hong Kong: Government Narratives and Educational Implications

open access: yesEuropean Journal of Education, Volume 61, Issue 4, December 2026.
ABSTRACT This article explores the evolving construction of good citizenship in Hong Kong, particularly in the context of significant socio‐political changes following the implementation of the National Security Law in 2020. By analysing government documents and endorsed curricula, the study identifies a shift from previously diverse interpretations of
Jason Cong Lin
wiley   +1 more source

A Machine Learning Framework for Flood Risk Assessment With Imbalanced Data

open access: yesJournal of Flood Risk Management, Volume 19, Issue 4, December 2026.
ABSTRACT This study presents a machine‐learning framework for identifying areas of elevated flood risk using imbalanced, high‐dimensional geospatial datasets. Using the Mandra River Basin in Greece as a case study, an extreme gradient boosting (XGBoost) classifier was trained on 11 flood‐related features including hydrological, meteorological, soil and
Alexia Tsouni   +7 more
wiley   +1 more source

AI Alignment Versus AI Ethical Treatment: 10 Challenges

open access: yesAnalytic Philosophy, Volume 67, Issue 4, Page 309-327, December 2026.
ABSTRACT A morally acceptable course of AI development should avoid two dangers: creating unaligned AI systems that pose a threat to humanity and mistreating AI systems that merit moral consideration in their own right. This paper argues these two dangers interact and that if we create AI systems that merit moral consideration, simultaneously avoiding ...
Adam Bradley, Bradford Saad
wiley   +1 more source

A multi-source remote sensing dataset for large-scale forest monitoring. [PDF]

open access: yesData Brief
D'Amico G   +12 more
europepmc   +1 more source

Evaluating the Impact of Multiscale E‐Region Turbulence on HF Scintillation

open access: yesGeophysical Research Letters, Volume 53, Issue 21, 16 November 2026.
Abstract Ionospheric scintillation driven by plasma irregularities disrupts radio propagation across frequencies from HF to L‐band. While phase‐screen methods dominate scintillation modeling, they can be inadequate in the E‐region where irregularity scales can be comparable to the radio wavelength or Fresnel scale and span orders of magnitude.
Alexander Q. Green   +3 more
wiley   +1 more source

Precipitation nowcasting with radar data for evaluating multiple horizons using U-Net-based algorithm in Eastern Amazon. [PDF]

open access: yesPLoS One
Rocha R   +13 more
europepmc   +1 more source

Impact of Wildfire‐Emitted Black Carbon on Snowmelt Across Western North America

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 21, 16 November 2026.
Abstract Wildfires are a major source of black carbon (BC) and their increasing frequency and intensity have enhanced BC deposition onto snowpack across western North America, which accelerates snowmelt and triggers multiple feedbacks that can substantially alter atmospheric composition and regional hydrology. Using the Weather Research and Forecasting
Nilkamal Jaisawal   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy