作者机构：
[Yuan, Ji-Bing; Zhang, Deng-Yu; Tang, Shi-Qing] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421008, Peoples R China.;[Yuan, Ji-Bing; Zhang, Deng-Yu; Tang, Shi-Qing] Hengyang Normal Univ, Hunan Prov Key Lab Intelligent Informat Proc & Ap, Hengyang 421008, Peoples R China.;[Peng, Zhao-Hui] Hunan Univ Sci & Technol, Inst Modern Phys, Xiangtan 411201, Peoples R China.;[Peng, Zhao-Hui] Hunan Univ Sci & Technol, Dept Phys, Xiangtan 411201, Peoples R China.;[Yuan, Ji-Bing; Tang, Shi-Qing] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct, Changsha 410081, Hunan, Peoples R China.
通讯机构：
[Tang, Shi-Qing] H;Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421008, Peoples R China.;Hengyang Normal Univ, Hunan Prov Key Lab Intelligent Informat Proc & Ap, Hengyang 421008, Peoples R China.;Hunan Normal Univ, Key Lab Low Dimens Quantum Struct, Changsha 410081, Hunan, Peoples R China.;Hunan Normal Univ, Minist Educ, Dept Phys, Quantum Control, Changsha 410081, Hunan, Peoples R China.
关键词：
DIT;TRANSPARENCY;PHOTONIC;MOLECULE;EMITTER
摘要：
We theoretically investigate the transparency effect with a hybrid system composed of a photonic molecule and dipole emitter. It is shown that the transparency effect incorporates both the coupled resonator-induced transparency (CRIT) effect and the dipole-induced transparency (DIT) effect. It is found that the superposed transparency windows are consistently narrower than the CRIT and DIT transparency windows. Benefiting from the superposed transparency effect, the photonic Faraday rotation effect could be realized in the photonic molecule system, which is useful for entanglement generation and quantum information processing.
通讯机构：
Key Laboratory of Intelligent Computing & Information Processing, The college of Information Engineering, Xiangtan University, Xiangtan, China
关键词：
多目标优化算法;Pareto支配关系;邻域竞赛机制;高维优化问题
摘要：
传统多目标优化算法(Multi-objective evolution algorithms,MOEAs)的基本框架大致分为两部分:首先是收敛性保持,采用Pareto支配方法将种群分成若干非支配层;其次是分布性保持,在临界层中,采用分布性保持机制维持种群的分布性.然而在处理高维优化问题(Many-objective optimization problems,MOPs)(目标维数大于3)时,随着目标维数的增加,种群的收敛性和分布性的冲突加剧,Pareto支配关系比较个体优劣的能力也迅速下降,此时传统的MOEA已不再适用于高维优化问题.鉴于此,本文提出了一种基于邻域竞赛的多目标优化算法(Evolutionary algorithm based on neighborhood competition for multi-objective optimization,NCEA).NCEA首先将个体的各个目标之和作为个体的收敛性估计;然后,计算当前个体向量与收敛性最好的个体向量之间的夹角,并将其作为当前个体的邻域估计;最后,通过邻域竞赛方法将问题划分为若干个相互关联的子问题并逐步优化.为了验证NCEA的有效性,本文选取5个优秀的算法与NCEA进行对比实验.通过对比实验验证,NCEA具有较强的竞争力,能同时保持良好的收敛性和分布性.
摘要：
The discharge characteristics and temporal nonlinear behaviors of the atmospheric pressure coaxial electrode dielectric barrier discharges are studied by using a one-dimensional fluid model. It is shown that the discharge is always asymmetrical between the positive pulses and negative pulses. The gas gap severely affects this asymmetry. But it is hard to acquire a symmetrical discharge by changing the gas gap. This asymmetry is proportional to the asymmetric extent of electrode structure, namely the ratio of the outer electrode radius to the inner electrode radius. When this ratio is close to unity, a symmetrical discharge can be obtained. With the increase of frequency, the discharge can exhibit a series of nonlinear behaviors such as period-doubling bifurcation, secondary bifurcation and chaotic phenomena. In the period-doubling bifurcation sequence the period-n discharge becomes more and more unstable with the increase of n. The period-doubling bifurcation can also be obtained by altering the discharge gas gap. The mechanisms of two bifurcations are further studied. It is found that the residual quasineutral plasma from the previous discharges and corresponding electric field distribution can weaken the subsequent discharge, and leads to the occurrence of bifurcation.
作者机构：
[黄海午] College of Mathematics and Statistics,Hengyang Normal University, Hunan Provincial Key Laboratory of Intelligent Information Processing and Application, Hengyang, 421002
作者机构：
[龙祖强; 许岳兵; 李龙] College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang, Hunan, 421002, China;[龙祖强] Department of Computers and Electronic Engineering, Wayne State University, Detroit, MI, 48202, United States
通讯机构：
College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang, Hunan, China
作者机构：
[赵桂芝; 吴喜军; 李志强; 周青芝; 肖德涛; Shan, Jian] School of Nuclear Science and Technology, University of South China, Hengyang, China;[李志强] School of Physics and Electronic Engineering, Hengyang Normal University, Hengyang, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, China
摘要：
An in-depth and comprehensive understanding of the complex nonlinear behaviors in atmospheric dielectric barrier discharge is significant for the stable operation and effective control of the plasma. In this paper, we study the nonlinear behaviors in argon atmospheric dielectric barrier multi pulse discharges by a one-dimensional fluid model. Under certain conditions, the multi pulse discharge becomes very sensitive with the increase of frequency, and the multi pulse period-doubling bifurcation, inverse period-doubling bifurcation and chaos appear frequently. The discharge can reach a relatively steady state only when the discharges are symmetrical between positive and negative half cycle. In addition, the effects of the voltage on these nonlinear discharges are also studied. It is found that the amplitude of voltage has no effects on the number of discharge pulses in multi-pulse period-doubling bifurcation sequences; however, to a relatively stable periodic discharge, the discharge pulses are proportional to the amplitude of the applied voltage within a certain range.
作者机构：
[赵艳辉] School of Electrical Engineering, University of South China, Hengyang 421001, China;[刘才学; 踪训成] Nuclear Power Institute of China, Chengdu 610041, China;[黄顺] Department of Physics and Information Science, Hengyang Normal College, Hengyang 421008, China;[刘丽艳; 赵修良] School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
通讯机构：
School of Nuclear Science and Technology, University of South China, China
关键词：
中子注量率;放大甄别器;放大器增益;最小输入脉冲宽度;最大计数率
摘要：
为了测量反应堆内中子注量率分布，保证反应堆内活化55 M n-58 Ni合金探测片γ计数测量的可靠性，本文研制了中子注量率分布测量装置中9通道放大甄别器。多通道放大甄别器性能指标测试与应用测试结果表明：每个通道放大器增益1～21连续可调、甄别器阈值独立连续可调，具有最大计数率高、灵敏度高、稳定性好、系统抗串扰能力强等优点；放大器增益长期稳定性≤1％，甄别器最小输入脉冲宽度≥0.1μs ，甄别器最大计数率≤4×106 s-1，能用于实时长期稳定测量反应堆内中子注量率分布。
作者机构：
[李跃] Hunan Institute of Technology, Hengyang, 421002, China;[游开明; 朱亚培; 刘灿] Faculty of Physics and Electronic Information Science, Hengyang Normal University, Hengyang, 421002, China;[蒋刚毅] Faculty of Information Science and Technology, Ningbo University, Ningbo, 315211, China
通讯机构：
[Zhu, Y.-P.] F;Faculty of Physics and Electronic Information Science, Hengyang Normal University, Hengyang, China
作者机构：
[赵修良; 刘丽艳] School of Nuclear Science and Technology, University of South China, Hengyang;Hunan;421001, China;[黄顺] Physical and Electronic Information Science, Hengyang Normal College, Hengyang;421008, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, Hunan, China
作者机构：
[戴志平; 游开明] Department of Physics and Electronic Information Science, Hengyang Normal University, Hengyang;Hunan;421002, China;[杨振军; 张书敏; 庞兆广] Hebei Province Key Laboratory of Advanced Thin Film Material, College of Physics and Information Engineering, Hebei Normal University, Shijiazhuang;Hebei
通讯机构：
[Yang, Z.] H;Hebei Province Key Laboratory of Advanced Thin Film Material, College of Physics and Information Engineering, Hebei Normal University, Shijiazhuang, Hebei, China
