作者机构：
[Long, Hai-Yan; Feng, Sheng-Qin] China Three Gorges Univ, Coll Sci, Dept Phys, Yichang 443002, Peoples R China.;[Zhou, Dai-Mei; Sa, Ben-Hao] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430082, Peoples R China.;[Ma, Hai-Liang; Sa, Ben-Hao; Yan, Yu-Liang] China Inst Atom Energy, Beijing 102413, Peoples R China.;[Sa, Ben-Hao] CCAST, World Lab, Beijing 100080, Peoples R China.
通讯机构：
[Long, Hai-Yan] C;China Three Gorges Univ, Coll Sci, Dept Phys, Yichang 443002, Peoples R China.
摘要：
The parton and hadron cascade model PACIAE based on PYTHIA is utilized to systematically investigate strange particle production in pp collisions at energies available at the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC). Globally speaking, the PACIAE results of the strange particle rapidity density at midrapidity and the transverse momentum distribution are better than those of PYTHIA (default) in comparison with STAR and ALICE experimental data. This may represent the importance of the parton and hadron rescatterings, as well as the reduction mechanism of strange quark suppression, added in the PACIAE model. The K/π ratios as a function of reaction energy in pp collisions from CERN Super Proton Synchrotron (SPS) to LHC energies are also analyzed in this paper.
作者：
Liu, Sanya;Liu, Zhi;Sun, Jianwen（孙建文）;Liu, Lin
期刊：
International Journal of Digital Content Technology and its Applications,2011年5(3):126-135 ISSN：1975-9339
通讯作者：
Liu, S.(lsy5918@gmail.com)
作者机构：
[Sun, Jianwen; Liu, Sanya; Liu, Zhi; Liu, Lin] Engineering and Research Center for Information Technology on Education, Central China Normal University, National Engineering Research Center for E-Learning, Hubei Wuhan, China
摘要：
Synergetic neural network (SNN) associates synergetics with artificial neural network, it can rigorously deal with the behavior of network in the mathematical theory, and have the advantage of fast learning, short pattern recalling time and so on. In this paper, a pattern recognition method based on the self-adaptive attention parameters presented on the basis of analyzing the key technology of SNN, and the advanced algorithm will be employed in the online writeprint identification, the key point of this algorithm is that it can correct initial mis-identified patterns through measuring similarity between the prototype pattern and the testing pattern in the evolution of order parameters. Experimental results show that the advanced SNN has better performance and robustness than the SNN based on balanced attention parameters. Further, the network's self-learning ability and recognition performance is greatly improved by using advanced SNN.
作者机构：
[Chang, Ning-Jie; Rong, Jian; Fu, Liang; Xiao, Wen-Jing; Chen, Jia-Rong; Zou, You-Quan] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, Wuhan 430079, Hubei, Peoples R China.;[Chen, Jia-Rong] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
通讯机构：
[Chen, Jia-Rong] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Coll Chem, 152 Luoyu Rd, Wuhan 430079, Hubei, Peoples R China.
摘要：
A series of chiral pyrrolidinyl-sulfamide derivatives have been identified as efficient bifunctional organocatalysts for the direct Michael addition of cyclohexanone to a wide range of nitroalkenes. The desired Michael adducts were obtained in high chemical yields and excellent stereoselectivities (up to 99/1 dr and 95% ee).
关键词：
ring closure reactions;multicomponent reactions;fused pyridine derivatives;quinoline derivatives
摘要：
N-Protected 2-vinylindoles react with aromatic aldehydes and anilines to give carboline products, whereas N-unprotected 2-vinylindoles afford under the same conditions tetrahydroquinoline products almost exclusively as cis-diastereomers.
