A longitudinal study of multi-word constructions in L2 academic writing: the effects of frequency and dispersion
Sign Up to like & getrecommendations! Published in 2020 at "Reading and Writing"
DOI: 10.1007/s11145-020-10108-3
Abstract: This study examined the trajectories of the multi-word constructions (MWCs) in 98 advanced second language (L2) learners during their first-year at an English-medium university in a non-English-speaking country, using linear mixed-effects modelling, over one academic… read more here.
Keywords: frequency dispersion; academic writing; frequency; multi word ... See more keywords
Digitally virtualized atoms for acoustic metamaterials
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DOI: 10.1038/s41467-019-14124-y
Abstract: By designing tailor-made resonance modes with structured atoms, metamaterials allow us to obtain constitutive parameters outside their limited range from natural materials. Nonetheless, tuning the constitutive parameters depends on our ability to modify the physical… read more here.
Keywords: constitutive parameters; frequency dispersion; acoustic metamaterials; structure ... See more keywords
Controlling frequency dispersion in electromagnetic invisibility cloaks
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-42481-7
Abstract: Electromagnetic cloaking, as challenging as it may be to the physicist and the engineer has become a topical subject over the past decade. Thanks to the transformations optics (TO) invisibility devices are in sight even… read more here.
Keywords: frequency dispersion; cloak; frequency; spherical cloak ... See more keywords
Low-frequency dispersion and attenuation in anisotropic partially saturated rocks
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DOI: 10.1093/gji/ggx107
Abstract: The mesoscopic-loss mechanism is believed to be the most important attenuation mechanism in porous media at seismic frequencies. It is caused by P-wave conversion to slow diffusion (Biot) modes at material inhomogeneity on length scales… read more here.
Keywords: frequency dispersion; frequency; anisotropic; partially saturated ... See more keywords
Performance Demonstration of Dispersive SCORE: Digital Scalloped Beamforming With X-Band and C-Band DBF-SARs
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2021.3101841
Abstract: Digital beamforming (DBF) with scan-on-receive (SCORE) is a state-of-the-art technique for high-resolution and wide-swath observation in synthetic aperture radar (SAR) imaging. However, this technique has a problem with frequency dispersion. Most existing DBF methods treat… read more here.
Keywords: dbf sars; band; dbf; frequency dispersion ... See more keywords
On the Frequency Dispersion in DBF SAR and Digital Scalloped Beamforming
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2019.2958863
Abstract: Digital beamforming (DBF) with Scan-On-Receive (SCORE) in elevation is a powerful technique for spaceborne synthetic aperture radar (SAR) to achieve high-resolution wide-swath (HRWS) images. DBF in spaceborne SAR should be implemented in real-time to reduce… read more here.
Keywords: dbf sar; frequency dispersion; frequency;