490,054 research outputs found
Analyse des signaux multicomposante à modulation de fréquence linéaire par la transformation de Teager-Huang-Hough
Full text linkA novel detection approach of linear FM (LFM) signals, with single or multiple components, in the time-frequency plane of Teager-Huang (TH) transform is presented. The detection scheme that combines TH transform and Hough transform is referred to as Teager-Huang-Hough (THH) transform. The input signal is mapped into the time-frequency plane by using TH transform followed by the application of Hough transform to recognize time-frequency components. LFM components are detected and their parameters are estimated from peaks and their locations in the Hough space. Advantages of THH transform over Hough transform of Wigner-Ville distribution (WVD) are: 1) cross-terms free detection and estimation, and 2) good time and frequency resolutions. No assumptions are made about the number of components of the LFM signals and their models. THH transform is illustrated on multicomponent LFM signals in free and noisy environments and the results compared with WVD-Hough and pseudo-WVD-Hough transforms
Tunable single and multiwavelength continuous-wave c-cut Nd:YVO <sub>4</sub> laser
No full textWe report a discretely tunable, single and multiwavelength continuous-wave diode-end-pumped laser with a c-cut Nd:YVO 4 crystal lasing on the 4F 3/2- 4I 11/2 intermanifold transitions and an intracavity sub-THz free-spectral-range etalon. Experimental results show that it is tunable in the discrete regions of 1066.5-1066.8, 1083.1-1084.6, and 1087.2-1088.2 nm and operates simultaneously at dual-wavelengths of (1084.6, 1087.4), (1066.5, 1088.0), (1066.8, 1083.3) nm by changing the angle of an intracavity etalon with 0.67 THz free-spectral range. With a proper etalon angle, the laser can also simultaneously oscillate at four wavelengths of 1066.9, 1082.9, 1085.7, and 1088.3 nm with a total output power of 1.2 W at an incident diode pump power of 15 W. Similar performance of the laser at different wavelengths was also achieved by using a 0.88 THz free-spectral-range etalon in the same laser cavity.</p
More on Soft Theorems: Trees, Loops and Strings
Full text linkThe work of S. H. is
supported by Zurich Financial Services Membership and
the Ambrose Monell Foundation. The work of Y.-t. H. is
supported by the National Science Foundation Grant
No. PHY-1314311 and MOST Grant No. 103-2112-M002-025-MY3.
The work of C. W. is supported by the
Science and Technology Facilities Council Consolidated
Grant No. ST/J000469/1, “String theory, gauge theory and
duality.” The work of M. B. is partially supported by the
ERC Advanced Grant No. 226455, “Superfields
FIGURES 36–37 in Three new species of Coccobius Ratzeburg (Hymenoptera, Aphelinidae) and redescription of C. abdominis Huang and C. furviflagellatus Huang from China
No full textFIGURES 36–37. Coccobius furviflagellatus, pupa: 36, dissected diaspidid scale showing a black female pupa (left) that has been hyperparasitized by a male, and a black male pupa (right) about to emerge as an adult; 37, exuviae of male.Published as part of Wang, Zhu-Hong, Huang, Jian & Polaszek, Andrew, 2014, Three new species of Coccobius Ratzeburg (Hymenoptera, Aphelinidae) and redescription of C. abdominis Huang and C. furviflagellatus Huang from China, pp. 460-472 in Zootaxa 3774 (5) on page 467, DOI: 10.11646/zootaxa.3774.5.4, http://zenodo.org/record/22456
Force harmonic distortion in the supine human body during vertical and longitudinal horizontal sinusoidal whole-body vibration
No full textAbacarus floridulus Huang 2001
No full textAbacarus floridulus Huang, 2001 (Pl. 7 C) Abacarus floridulus Huang, 2001 b: 85; 2001 d: 62 Specimens examined: 3 Ψ, Taipei: Yangmingshan (440m; N 25 °09´E 121 ° 32´), 25 -Aug.- 1999, Huang & Wang; ex Miscanthus floridulus (Labill.) Warb. (Poaceae). Relation to host: A vagrant on the lower leaf surface. No apparent damage was observed.Published as part of Huang, Kun-Wei & Wang, Chin-Fah, 2009, Eriophyoid mites (Acari: Eriophyoidea) of Taiwan: thirty-seven species from Yangmingshan, including one new genus and twenty-two new species, pp. 1-50 in Zootaxa 1986 on page 34, DOI: 10.5281/zenodo.18542
Tumoris sansasii Huang 2001
No full textTumoris sansasii Huang, 2001 (Pl. 4 A, B) Tumoris sansasii Huang, 2001: 99 Specimens examined: 3 Ψ, Taipei: Yangmingshan (650m; N 25 ° 10´E 121 ° 34´), 24 -Aug.- 1999, Huang & Wang; ex Symplocos chinensis (Lour.) Druce (Symplocaceae). Relation to host: A vagrant on the lower leaf surface. No apparent damage was observed. PLATE 4. Tumoris sanasaii Huang, 2001 A, Dorsal view; B, Epigynium; Neometaculus beecheyaus sp. nov. C, Dorsal view; D, Epigynium.Published as part of Huang, Kun-Wei & Wang, Chin-Fah, 2009, Eriophyoid mites (Acari: Eriophyoidea) of Taiwan: thirty-seven species from Yangmingshan, including one new genus and twenty-two new species, pp. 1-50 in Zootaxa 1986 on pages 24-26, DOI: 10.5281/zenodo.18542
FIGURES 57–58. Diaspidid scale associated with Coccobius leptocerus. 57 in Three new species of Coccobius Ratzeburg (Hymenoptera, Aphelinidae) and redescription of C. abdominis Huang and C. furviflagellatus Huang from China
No full textFIGURES 57–58. Diaspidid scale associated with Coccobius leptocerus. 57, host diaspidid scale in leaf sheath of bamboo; 58, host mummy after C. leptoceras emergence.Published as part of Wang, Zhu-Hong, Huang, Jian & Polaszek, Andrew, 2014, Three new species of Coccobius Ratzeburg (Hymenoptera, Aphelinidae) and redescription of C. abdominis Huang and C. furviflagellatus Huang from China, pp. 460-472 in Zootaxa 3774 (5) on page 471, DOI: 10.11646/zootaxa.3774.5.4, http://zenodo.org/record/22456
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