47 research outputs found

    RETRACTED: A Novel Approavh to Discover Web Services Using WSDL and UDDI

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    This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).This article has been retracted at the request of the scientific committee of International Conference on Computer, Communication and Convergence (ICCC 2015). The authors have plagiarized part of a paper that had already appeared in the International Journal of Information Technology and Computer Science(IJITCS), 6 (2014) 56–62, DOI: 10.5815/ijitcs.2014.10.08. (http://www.mecs-press.org/ijitcs/ijitcs-v6-n10/v6n10-8.html). One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and has not appeared in a publication elsewhere. Re-use of any data should be appropriately cited. As such this article represents an abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the ICCC 2015 submission process

    Analysis of linear long-term trend of aerosol optical thickness derived from SeaWiFS using BAER over Europe and South China

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    The main purposes of the present paper are not only to investigate linear long-term trends of Aerosol Optical Thickness (AOT) at 443 and 555 nm over regions in Europe and South China, but also to show the uncertainty caused by cloud disturbance in the trend analysis of cloud-free aerosol. These research areas are the densely urbanised and often highly polluted regions. The study uses the Bremen AErosol Retrieval (BAER) and Sea-viewing Wide Field-of-view Sensor (SeaWiFS) data for AOT retrievals in the specified regions from October 1997 to May 2008. In order to validate the individually retrieved AOTs and the corresponding trends, AErosol RObotic NETwork (AERONET) level 2.0 data have been used. The retrieved AOTs were in good agreement with those of AERONET (0.79 ≤ <i>R</i> ≤ 0.88, 0.08 ≤ RMSD ≤ 0.13). The contamination of the aerosol retrievals and/or AERONET observations by thin clouds can significantly degrade the AOT and lead to statistically non-representative monthly-means, especially during cloudy seasons. Therefore an inter-correction method has been developed and applied. The "corrected" trends for both BAER SeaWiFS and AERONET AOT were similar and showed in average a relative difference of ∼25.19%. In general terms, negative trends (decrease of aerosol loading) were mainly observed over European regions, with magnitudes up to −0.00453 and −0.00484 yr<sup>−1</sup> at 443 and 555 nm, respectively. In contrast, the trend in Pearl River Delta was positive, most likely attributed to rapid urbanization and industrialization. The magnitudes of AOT increased by +0.00761 and +0.00625 yr<sup>−1</sup> respectively at 443 and 555 nm

    Search for the doubly heavy Xi bc0 baryon via decays to D(0)pK(-)

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    A search for the doubly heavy Ξbc0\mathit{\Xi}_{bc}^{0} baryon using its decay to the D0pK−D^0pK^- final state is performed using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the LHCb experiment between 2016 and 2018, corresponding to an integrated luminosity of 5.4 fb−1\mathrm{fb}^{-1}. No significant signal is found in the invariant mass range from 6.7 to 7.2 GeV/c2\mathrm{GeV}/c^2. Upper limits are set at 95%95\% credibility level on the ratio of the Ξbc0\mathit{\Xi}_{bc}^{0} production cross-section times its branching fraction to D0pK−D^0pK^- relative to that of the Λb0→D0pK−\mathit{\Lambda}_{b}^{0} \to D^0pK^- decay. The limits are set as a function of the Ξbc0\mathit{\Xi}_{bc}^{0} mass and lifetime hypotheses, in the rapidity range from 2.0 to 4.5 and in the transverse momentum region from 5 to 25 GeV/c\mathrm{GeV}/c. Upper limits range from 1.7×10−21.7\times10^{-2} to 3.0×10−13.0\times10^{-1} for the considered Ξbc0\mathit{\Xi}_{bc}^{0} mass and lifetime hypotheses

    Strong constraints on the b → sγ photon polarisation from B 0 → K *0 e + e − decays

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    Abstract: An angular analysis of the B0 → K*0e+e− decay is performed using a data sample corresponding to an integrated luminosity of 9 fb−1 of pp collisions collected with the LHCb experiment. The analysis is conducted in the very low dielectron mass squared (q2) interval between 0.0008 and 0.257 GeV2, where the rate is dominated by the B0 → K*0γ transition with a virtual photon. The fraction of longitudinal polarisation of the K*0 meson, FL, is measured to be FL = (4.4 ± 2.6 ± 1.4)%, where the first uncertainty is statistical and the second systematic. The ATRe observable, which is related to the lepton forward-backward asymmetry, is measured to be ATRe = −0.06 ± 0.08 ± 0.02. The AT2 and ATIm transverse asymmetries, which are sensitive to the virtual photon polarisation, are found to be AT2 = 0.11 ± 0.10 ± 0.02 and ATIm = 0.02 ± 0.10 ± 0.01. The results are consistent with Standard Model predictions and provide the world’s best constraint on the b → sγ photon polarisation
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