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宋全成(Song, Quan Cheng) 전남대학교 글로벌디아스포라연구소 2011 전남대학교 세계한상문화연구단 국제학술회의 Vol.2011 No.2
Chinese New Immigrates are the Chinese people, either have the Chinese nationality, or have acquired the nationality of the host country, who emigrated overseas from mainland China, Taiwan, Hong Kong and Macau since 1978 and stayed abroad for more than one year. The overseas Chinese in Europe include immigrant students and illegal immigrants and the number is between 2.6 and 3.2 million. The followings are the new characteristics of Chinese New Immigrants in Europe: the type of Chinese New Immigrants are diversified and the prominent feature is that investment immigrants have become one of them; the communities of Chinese New Immigrants developed rapidly; the number of elite people of Chinese New Immigrants is increased and the degree of social integration has improved; the awareness of mass media and political participation of Chinese New Immigrants are strong and the political status of Chinese overseas improved significantly. From the size perspective, Europe has become the fastest growing area of Chinese New Immigrants; from the regional point of view, new immigrants from China has spread throughout Europe; from the social status point of view, the culture of Chinese New Immigrants in Europe is lower and the social status remains to be further improved.
Quan, Gui-Hua,Oh, Sei-Ryang,Song, Hyuk-Hwan,Lee, Hyeong-Kyu,Chin, Young-Won The Korean Society for Applied Biological Chemistr 2011 Applied Biological Chemistry (Appl Biol Chem) Vol.54 No.4
A simple and rapid purification method of 8-methoxy-psoralen from the crude methanol extract of the rhizomes of Pulsatilla chinenis was established using high-speed counter-current chromatography (HSCCC). From the crude extract (233.2 mg), 8-methoxypsoralen (10.0 mg) was separated for the first time in one-step, using a two-phase solvent system composed of n-hexane/ethyl acetate/methanol/water (5:5:5:5, v/v/v/v). The isolated amount of this compound was found to be equivalent to 89% of the amount observed quantitatively in the crude methanolic extract. The final purity of the 8-methoxy-psoralen was determined to be over 98% by ultra-performance liquid chromatography-UV analysis.
Song, J.M.,Hossain, J.,Yoo, D.G.,Lipatov, A.S.,Davis, C.T.,Quan, F.S.,Chen, L.M.,Hogan, R.J.,Donis, R.O.,Compans, R.W.,Kang, S.M. Academic Press 2010 Virology Vol.405 No.1
We generated influenza virus-like particles (VLPs) containing the wild type (WT) H5 hemagglutinin (HA) from A/Viet Nam/1203/04 virus or a mutant H5 HA with a deletion of the multibasic cleavage motif. VLPs containing mutant H5 HA were found to be as immunogenic as VLPs containing WT HA. A single intramuscular vaccination with either type of H5 VLPs provided complete protection against lethal challenge. In contrast, the recombinant H5 HA vaccine was less immunogenic and vaccination even with a 5 fold higher dose did not induce protective immunity. VLP vaccines were superior to the recombinant HA in inducing T helper type 1 immune responses, hemagglutination inhibition titers, and antibody secreting cells, which significantly contribute to inducing protective immunity after a single dose vaccination. This study provides insights into the potential mechanisms of improved immunogenicity by H5 VLP vaccines as an approach to improve the protective efficacy against potential pandemic viruses.
Aerodynamic shape optimized design for wind turbine blade using new airfoil series
Quan Wang,Jun Wang,Jin Chen,Song Luo,Jinfeng Sun 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.7
This paper introduces a new airfoil series to optimize the aerodynamic shape of wind turbine blades. It is verified that the CQU-A airfoilseries exhibits high aerodynamic performance by using the wind tunnel experimental data and RFOIL. The geometry of a 2 MWwind turbine blade with new airfoil families is designed preliminarily based on the shape of Tjaereborg 2 MW rotor. A multi-objectiveoptimized model combining the maximum power coefficient of the wind turbine with minimum area of the blade surface is proposed forthe pitch regulated wind turbine. An optimized code is developed based on the corrected blade element momentum (BEM) theory andparticle swarm optimization (PSO) algorithm. The optimization results show that, compared with that of the original rotor and the Tjaereborgrotor, not only the power coefficient and annual power production is improved, but also the area of the blade surface is reduced. The decreased area indicates that the mass of the optimized blades is reduced. It is beneficial for increasing the fatigue life and reducingcost of composite materials if the internal structure of the wind turbine blades is unchanged. Furthermore, the load of the blade root iseffectively controlled by using this alternative optimization program.
TETRAVALENT SYMMETRIC GRAPHS OF ORDER 9p
Song-Tao Guo,Yan-Quan Feng 대한수학회 2012 대한수학회지 Vol.49 No.6
A graph is symmetric if its automorphism group acts transi-tively on the set of arcs of the graph. In this paper, we classify tetravalent symmetric graphs of order 9p for each prime p.
A Node Importance Measuring Method based on Hypernetwork
Quan Xiao,Fangli Yang,Song Luo,Lihong Zhang,Hua Zhao,Wei Shu 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.12
Measuring the importance of nodes in network is an important issue in the study of complex networks. The networks in current researches are mostly based on classical graph theory, which have limitations on describing certain complex relations. In this work, we introduce hypernetwork, taking hypergraph as representation foundation, to describe relations. Hypernetwork is able to extend the modeling and describing capability of traditional network and may be a promising representation model of complex relations. However, a general lack of attention to the node importance measuring in hypernetwork, an important fundamental issue for its further application, has been noted across the majority of related published works. In this paper, we utilize the idea of deleting method, to measure the importance of node in hypernetwork through investigating the influence on the whole network when deleting it. Specifically, the influence is measured by direct loss and indirect loss. Through a calculating example, our method is compared with node degree, betweenness, closeness centrality, degree of neighbor nodes etc., the result shows this method has better adaptability and accuracy.
RELATION BETWEEN DEMYANOV DIFFERENCE AND MINKOWSKI DIFFERENCE OF CONVEX COMPACT SUBSETS IN $R^2$
Song, Chun-Ling,Xia, Zun-Quan,Zhang, Li-Wei,Li, Shu-Yang 한국전산응용수학회 2007 Journal of applied mathematics & informatics Vol.23 No.1
A necessary and sufficient condition for Demyanov difference and Minkowski difference of compact convex subsets in $R^2$ being equal is given in this paper. Several examples are computed by Matlab to test our result. The necessary and sufficient condition makes us to compute Clarke subdifferential by quasidifferential for a special of Lipschitz functions.
Quan Zhou,Song Yang,Heng Zhang,Fei Chang,Hu Li,Hu Pan,Wei Xue,De-Yu Hu 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.31 No.-
A comparative study on the activity of La2O3 and two kinds of nano La2O3 catalysts prepared usingsonochemical (nano La2O3-S) and hydrothermal methods in the transesterification to produce biodieselwas conducted. The relatively high activity of nano La2O3 catalysts may be ascribed to their high basestrength, large base amount, small particle size and large BET surface areas. Nano La2O3-S was selectedfor further optimisation due to its simple preparation procedure and short preparation time. The FAMEcontent and yield obtained were successively 97.6% and 90.3% under optimal conditions. Moreover, nanoLa2O3-S showed a remarkable tolerance to FFA.
The workability evaluation of wrought AZ80 magnesium alloy in hot compression
Quan, G.Z.,Ku, T.W.,Song, W.J.,Kang, B.S. Scientific and Technical Press ; Elsevier Science 2011 MATERIALS AND DESIGN Vol.32 No.4
Workability, an important parameter in metal forming process, can be evaluated by means of processing maps on the basis of dynamic materials model (DMM), constructed from experimentally generated flow stress variation with respect to strain, strain rate and temperature. To obtain the processing maps of wrought AZ80 magnesium alloy, hot compression tests were performed over a range of temperatures 523-673K and strain rates 0.01-10s<SUP>-1</SUP>. As the true strain is 0.25, 0.45, 0.65, 0.85 respectively, the response of strain-rate sensitivity (m-value), power dissipation efficiency (η-value) and instability parameter (ξ-value) to temperature and strain rate were evaluated. By the superimposition of the power dissipation and the instability maps, the stable, metastable and unstable regions were clarified clearly. In further, in the stable area the regions having the highest efficiency of power dissipation were identified and recommended. The optimal working parameters identified by the processing maps contribute to designing the hot forming process of AZ80 magnesium alloy without any defect.