Results 71 to 80 of about 560 (237)
Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces
InfoMat, EarlyView.A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley +1 more source
JCPP Advances, EarlyView.In a longitudinal sample (n = 94), we tested links between inhibitory control at age 4, emotion regulation (ER) at age 6, and internalizing (INT) and externalizing (EXT) problems at ages 9–10. Early inhibitory control did not predict ER or later INT/EXT (no mediation), whereas ER at 6 showed prospective associations with both outcomes.
Lilja K. Jónsdóttir +4 more
wiley +1 more source
Simulation of sea clutter at various frequency bands
, 2005 Sea clutter is a major degrading factor in detection and tracking of targets very close to sea surface. Radar returns from the sea surface are a complex function of radar and sea surface parameters.
VURAL, N, Arikan, FEZA
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Resonant States Reveal Strong Light–Matter Coupling in Nanophotonic Cavities
Laser &Photonics Reviews, EarlyView.Photonic resonant states reveal characteristics of coupled light–matter systems that would otherwise be hidden by damping. Their trajectories (when tuning the optical resonance) undergo a qualitative change at the onset of strong coupling: They start swapping positions.
Jan David Fischbach +5 more
wiley +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingTo address the challenge of strong sea clutter masking weak target signals for shore-based radar under complex sea states, this article proposes a complex-valued single-stage sea clutter suppression network (CV-SCSNet) which is characterized by a ...
Yongquan You +5 more
doaj +1 more source
Statistical Analysis of Coherent Monostatic and Bistatic Radar Sea Clutter [PDF]
, 2013 Radar sea clutter analysis has been an important area of radar research for many years. Very limited research has been carried out on coherent monostatic sea clutter analysis and even less on bistatic sea clutter.
Ritchie, MA
core
Revealing the Resonant Physics of Open Photonic Time Crystals
Laser &Photonics Reviews, EarlyView.ABSTRACT Photonic time crystals (PTCs) are media whose permittivity is modulated periodically in time, enabling momentum bandgaps and parametric amplification of light. Their realization at the nanoscale can revolutionize the study of light‐matter interactions.
Adrià Canós Valero +5 more
wiley +1 more source
The Journal of Engineering, 2019 Here, a new clutter suppression and small target detection method was presented for nautical radars based on image spectrum filtering and Hough transform (HT).
Zhonghua Bao, Chunlei Zhang, Jianbin Lu
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People and Nature, EarlyView.Abstract The first edition of the Ordnance Survey's 1:2500 County Series is marked with treed areas, such as woodlands and orchards, and, remarkably, freestanding trees. Consequently, it is an unparalleled source of information on the distribution of trees across Britain in the mid‐late nineteenth century, when the maps were first surveyed. In order to
Toby Pillatt, William A. P. Smith
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Comparative Study on Chaos Identification of Ionospheric Clutter From HFSWR
IEEE Access, 2019 In addition to target echoes, high frequency surface wave radar (HFSWR) receives sea and ionospheric clutter. Among these clutters, the ionospheric clutter is dominant and significantly affects the detection performance of HFSWR, particularly when the ...
Lyu Zhe +4 more
doaj +1 more source