Results 21 to 30 of about 41,390 (144)

Towards Dual-functional Radar-Communication Systems: Optimal Waveform Design [PDF]

, 2017
We focus on a dual-functional multi-input-multi-output (MIMO) radar-communication (RadCom) system, where a single transmitter communicates with downlink cellular users and detects radar targets simultaneously.
Li, Ang, Liu, Fan, Luo, Wu, Masouros, Christos, Petropulu, Athina, Zhou, Longfei   +5 more
core   +2 more sources

Numerical Investigations of the Aerothermal Performance of Modern Turbine Blade Tip Geometries at Design and Off‐Design Conditions and Under Stationary and Moving Shroud

Heat Transfer, EarlyView.
ABSTRACT High‐pressure turbine blade tips operate under extreme thermal stress, generating significant aerodynamic losses that must be continually optimized to improve engine efficiency and durability. This study uses computational fluid dynamics (CFD) to investigate the aerodynamic and thermal behavior of advanced turbine blade tip configurations ...
Kheir‐Eddine Arrif, Zakaria Mansouri, Salaheddine Azzouz   +2 more
wiley   +1 more source

The lowermost last‐glacial equilibrium line altitude in the Taiwanese Central Mountain Range and its implications for the palaeoclimate and the tropospheric moisture transport in East Asia

Journal of Quaternary Science, EarlyView.
Abstract The high mountains of Taiwan provide a unique location for Quaternary palaeoclimate research in East Asia and the north‐western Pacific. This study applies geomorphological field mapping and rock surface exposure dating with paired (10Be/26Al) in situ‐produced terrestrial cosmogenic nuclides to identify and date glacial landforms and boulders ...
Robert Hebenstreit, Jacob Hardt, Margot Böse   +2 more
wiley   +1 more source

Controls on ERS altimeter measurements over ice sheets: Footprint-scale topography, backscatter fluctuations, and the dependence of microwave penetration depth on satellite orientation [PDF]

, 2004
We consider the reliability of radar altimeter measurements of ice sheet elevation and snowpack properties in the presence of surface undulations. We demonstrate that over ice sheets the common practice of averaging echoes by aligning the first return ...
Arthern, RJ, Ridout, AL, Wingham, DJ
core   +1 more source

Modulations of local rainfall in northeast Australia associated with the Madden–Julian oscillation during austral summer

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The variation of rainfall and its diurnal cycle with the Madden–Julian oscillation over coastal regions of NE Australia exhibit both large‐scale and local‐scale influences. The widespread increased rainfall is driven by large‐scale forcings, while the local enhanced rainfall is likely affected by mesoscale coastal processes. The variation of convective
Thi Lan Dao, C. L. Vincent, Y. Huang, J. S. Soderholm   +3 more
wiley   +1 more source

Envelope radar cross section analysis of faired composite bodies

Digest on Antennas and Propagation Society International Symposium, 2003
The authors describe a method that is useful for defining realistic looking models of complex scattering structures with faired junctions. The resulting models are also well suited for HF radar cross section (RCS) analysis. It is shown that the envelope technique is particularly useful for efficiently computing and displaying full volumetric RCS ...
I.J. Gupta, W.D. Burnside, B.J.E. Taute
openaire   +3 more sources

Abrupt ending of the Madden–Julian Oscillation by convectively coupled Kelvin wave precipitation leaves a swath of flooding across Indonesia

Quarterly Journal of the Royal Meteorological Society, EarlyView.
During July 2021 there were widespread reports of flooding across the equatorial Maritime Continent. This analysis reveals how interactions between a system of convectively coupled Kelvin waves (CCKWs) and diurnally phase‐locked westward‐propagating inertio‐gravity waves during an active Madden–Julian Oscillation (MJO) caused these extreme rainfall ...
Natasha V. Senior, Adrian J. Matthews, Benjamin G. M. Webber, Jaka A. I. Paski, Danang E. Nuryanto, Richard W. Jones, Donaldi S. Permana, Auliya'a H. Febriyanti   +7 more
wiley   +1 more source

A consistent coupling of two‐moment microphysics and bulk ice optical properties, and its impact on radiation in a regional weather model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study presents a novel, consistent coupling of two‐moment microphysics (i.e., ice mass mixing ratio and number) with bulk ice optical properties, providing improved accuracy in radiative transfer simulations. The parametrisations, based on the mass‐equivalent spherical radius, avoid uncertainties associated with the effective radius by directly ...
Anthony J. Baran, James Manners, Paul R. Field, Kalli Furtado, Adrian Hill   +4 more
wiley   +1 more source

Immunosenescence Profile Is Associated With Increased Susceptibility to Severe COVID‐19

Aging Cell, EarlyView.
(A) A previous immunosenescence profile in individuals infected with SARS‐CoV2 creates a permissive environment for progression to severe COVID‐19: higher inflammaging, accumulation of exhausted/senescent T cells, an oligoclonal B‐cell repertoire, and accelerated epigenetic age.
Lucas Haniel A. Ventura, Lícia Torres, Giovanna Caliman Camatta, Jofer Zamame, Monique Macedo Coelho, Cecília Horta Ramalho‐Pinto, João Gervazio, Felipe Caixeta, Leandro Nascimento, Mariana Almeida Oliveira, Vinícius Dantas Martins, Marcos Felipe Oliveira, Murilo Soares Costa, Hugo Itaru Sato, Henrique Cerqueira Guimarães, Rafael Calvão Barbuto, Ana Paula Rocha Veiga, Najara Ataíde, Gabriela Prandi Caetano, Sarah Rangon, Mauro Lúcio O. Júnior, Fernanda Calvo Fortes, Luciana Zuccherato, Elaine Speziali, Olindo Assis Martins‐Filho, Verônica Coelho, Roberto Avritchir, Rafael Souza, Marina Ayupe, Caio Loureiro, Maria Eduarda Passos, Ana Clara Mota Neves, Pauline Leite, Santuza Maria Ribeiro Teixeira, Unaí Tupinambás, Liza Figueiredo Felicori, Gabriela Silveira‐Nunes, Tatiani Uceli Maioli, Denise Morais Fonseca, Andrea Teixeira‐Carvalho, Ana Maria Caetano Faria   +40 more
wiley   +1 more source

Ice‐Nucleating Particles Are Emitted by Raindrop Impact

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 11, 16 June 2025.
Abstract Ice‐nucleating particles (INPs) play a key role in ice formation and cloud microphysics and thus significantly impact the water cycle and the climate. However, our understanding of atmospheric INPs, particularly their sources, emissions, and spatiotemporal variability, is incomplete. While the enhancement of atmospheric INP concentrations with
C. Mignani, T. C. J. Hill, M. Nieto‐Caballero, K. R. Barry, N. C. Bryan, P. J. Marinescu, B. Dolan, A. P. Sullivan, M. Hernandez, A. Bosco‐Lauth, S. C. van den Heever, E. A. Stone, L. D. Grant, R. J. Perkins, P. J. DeMott, S. M. Kreidenweis   +15 more
wiley   +1 more source