Results 231 to 240 of about 36,199 (290)

Cognitive reserve and longitudinal changes in brain and cognition in semantic variant primary progressive aphasia

open access: yesAlzheimer's &Dementia, Volume 22, Issue 5, May 2026.
Abstract INTRODUCTION Cognitive reserve (CR) refers to the brain's ability to maintain cognitive performance despite neurodegeneration. Studying CR in semantic variant primary progressive aphasia (svPPA) may clarify variability in disease progression and identify protective factors.
Lauren A. Grebe   +17 more
wiley   +1 more source

Degree theory for 4‐dimensional asymptotically conical gradient expanding solitons

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 5, Page 1151-1298, May 2026.
Abstract We develop a new degree theory for 4‐dimensional, asymptotically conical gradient expanding solitons. Our theory implies the existence of gradient expanding solitons that are asymptotic to any given cone over S3$S^3$ with non‐negative scalar curvature. We also obtain a similar existence result for cones whose link is diffeomorphic to S3/Γ$S^3/\
Richard H. Bamler, Eric Chen
wiley   +1 more source

A Coherent Fibre Link for Space Geodesy

2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC), 2019
We realized a coherent fiber link, 1739 km long, to connect a facility of the Italian Space Agency devoted to Space Geodesy. We describe here the motivations, the architecture of the link, the Time and Frequency station at the remote end and the first results.
Davide Calonico   +2 more
exaly   +3 more sources

Home - About - Disclaimer - Privacy