48,835 research outputs found
Analyse des signaux multicomposante à modulation de fréquence linéaire par la transformation de Teager-Huang-Hough
No full textA 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
The complete chloroplast genome sequence of rare and endangered Camellia pubipetala Y. Wan & S. Z. Huang (Theaceae) of South China
No full textThe complete chloroplast genome sequence of rare and endangered Camellia pubipetala Y. Wan & S. Z. Huang (Theaceae) was mentioned in this research. By studying comparatively, we found that the C. pubipetala Y. Wan & S. Z. Huang chloroplast genome was 156,993 bp in length and composed of 86,590 bp LSC, 18,211 bp SSC, and two reverse repeating regions with 26,090 bp. The whole GC content was 37.33%. The genome encoded 116 functional genes, including 80 protein-coding genes, 32 tRNA genes, and 4 rRNA genes. In order to find the phylogenetic relationship of C. pubipetala Y. Wan & S. Z. Huang within Camellia genus, we reconstructed phylogenetic tree. The results indicate that C. pubipetala Y. Wan & S. Z. Huang was closely related to Camellia huana voucher and Camellia ptilosperma
Web Information Systems Engineering – WISE 2013 Workshops: WISE 2013 International Workshops BigWebData, MBC, PCS, STeH, QUAT, SCEH, and STSC Nanjing, China, October 13-15, 2013 Revised Selected Papers
No full textLecture notes in computer science: v. 8182, 201
Baseline concentrations of trace elements in metropolitan park soils of industrial, commercial and recreational cities
No full textCrystal structure and properties of indium telluride [Ga(en)(3)]In3Te7
No full text[Ga(en)(3)]In3Te7 (I) has been synthesized by solvothermal technique using Rb2Te, GaC3, InCl3 and Te as starting materials and ethylenediamine as solvent at 180 degrees C for 7 days. The structure consists of a Zintl anion, (2)(infinity) [In3Te7](3-) and a complex cation, [Ga(en)(3)](3+). I belongs to the monoclinic, space group P2(1)/c, (no. 14), with unit cell dimensions: a = 1.0460(2) nm, b = 1.6981 (3) nm, c = 1.4994(6) nm, beta = 95.46(2)degrees, V = 2. 651 (1) nm(3), Z = 4. Optical studies were performed on the powder samples, which suggested that I is a semiconductor with a band gap of 1.65eV. The result of TGA thermal analysis on I indicated that the weight loss of enthylendiamine proceeded in three steps. The decomposition of I produced Ga2Te3, In2Te3, Te and ethylenediamine as the final residues
The production and application of the antiserum against Zantedeschia mosaic virus recombinant coat protein
No full textSimulating the adaptive measures of soybean production to climate change in China: based on cross-scale model coupling
No full textSoybean is an important source of protein for humans and livestock. The steadily increasing demand fo soybean and global climate change both have brought great concern on risks and uncertainty in soybean supply. While fieldwork reports suggest that soybean farmers are aware of the risks posed by climate change and are adopting adaptive and mitigating measures, few studies have simulated and quantitatively assessed the effects of these adaptive techniques. In this study, we established a model coupling procedure between Decision Support System for Agrotechnology Transfer (DSSAT) and the China Agro-ecological Zone model (AEZ-China) to simulate soybean production based on observation records of soybean growth at 13 agro-meteorological observation stations in northeasten China and the Huang-Huai-Hai Plain over 1981-2011. The coupling procedure takes the advantage of DSSAT in its ability to calibrate the eco-physiological parameters based on simulating the dynamic bio-physiological processes of crop growth in daily step and the advantage of AEZ in rapidly evaluating the effects of shifts in planting day and changes in the length of growth cycle. Results indicate that climate change would result in beneficial effects in Northeastern China and cause losses in the Huang-Huai-Hai Plain in 2050s, the simulations using adaptive planting dates and cultivars with adaptive length of growth-cycle show that the losses can be reduced obviously
Development and comparison of three detection methods for calla lily-infecting Dasheen mosaic virus
No full textArtificial retardation of fatigue crack growth by the infiltration of cracks by foreign materials
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