Results 71 to 80 of about 12,150 (248)

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

Examining early inhibitory control and emotion regulation as predictors of childhood internalizing and externalizing problems: A longitudinal study

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, Matilda A. Frick, Andreas Frick, Emma J. Heeman, Karin C. Brocki   +4 more
wiley   +1 more source

Nautical radar clutter suppression and small target detection based on image spectrum filtering and Hough transform

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
doaj   +1 more source

Seasonal Variability of Precipitating Systems in Four Radar Domains of Northeast Brazil

International Journal of Climatology, EarlyView.
This study analyzes the climatology and evaluates how the physical aspects of precipitating systems are influenced by the dry and wet seasons in Northeast Brazil, highlighting seasonal variations in the frequency, size, intensity, and duration of these systems in the regions of Natal, Maceió, Petrolina, and Salvador.
Amanda Carolina da Silva Queiroz, Thiago Souza Biscaro   +1 more
wiley   +1 more source

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, Yu Changjun, Liu Aijun, Yang Xuguang, Quan Taifan   +4 more
doaj   +1 more source

Frozen Differential Scattering in Reconfigurable Complex Media

Laser &Photonics Reviews, EarlyView.
A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley   +1 more source

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

SmartBot, EarlyView.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen, Zeyuan Huang, Ying Yan, Xiaokang An, Zhikai Zhao, Jirong Lin, Xiangrong Zhao, Xianyuan Gao, Junyi Zong, Xuewen Jia, Zhipeng Yao, Jianliang Liao, Ning Ji   +12 more
wiley   +1 more source

Marine Radar Image Sequence Target Detection Based on Space–Time Adaptive Filtering and Hough Transform

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The performance of marine radar target detection is largely affected by the intricate and dynamic space–time variations of sea clutter signals, which cause substantial numbers of false and missed alarms. To improve the target detection performance
Baotian Wen, Zhizhong Lu, Yongfeng Mao, Bowen Zhou   +3 more
doaj   +1 more source

The social life of money for children

The British Journal of Sociology, EarlyView.
Abstract Inspired by Nigel Dodd's The Social Life of Money, this article proposes an analysis of entangled economic lives, that is, how meaning, structures and politics jointly shape the flow of monies within households. The past decades have marked a shift from “childrearing expenditures” to “parenting investments” that align with new visions of both ...
Nina Bandelj
wiley   +1 more source

Implementation of an Algorithm for the Estimation of the Sea Clutter Distribution and Parameters

Ingeniería, 2017
Sea clutter is the main interfering signal in radar systems. In order to develop appropriate strategies for clutter suppression, an algorithm able to identify the distribution of radar readings becomes necessary. By using several popular methods found in
Ismary Gato Martínez, José Raúl Machado Fernández, Mónica Jiménez Álvarez   +2 more
doaj   +1 more source