Strontium titanate films with high a-axis-orientation [a(100) =94.1%] were deposited on (111) Pt/Ti/SiO_(2)/Si substrates by the metal organic deposition process.X-ray diffraction shows that the degree of a-axis orien...Strontium titanate films with high a-axis-orientation [a(100) =94.1%] were deposited on (111) Pt/Ti/SiO_(2)/Si substrates by the metal organic deposition process.X-ray diffraction shows that the degree of a-axis orientation increases with increasing annealing temperature.It is found that the dielectric properties are improved by a higher annealing temperature,while the leakage currents are also enhanced,and the possible causes of temperature dependence are discussed.展开更多
We introduce a hybrid feedback control scheme to design a controller for the projective synchronization of complex dynamical networks with unknown periodically time-varying parameters.A differential-difference mixed p...We introduce a hybrid feedback control scheme to design a controller for the projective synchronization of complex dynamical networks with unknown periodically time-varying parameters.A differential-difference mixed parametric learning law and an adaptive learning control law are constructed to ensure the asymptotic convergence of the error in the sense of square error norm.Moreover,numerical simulation results are used to verify the effectiveness of the proposed method.展开更多
The elastic scattering Properties between ultracold ^(23)Na and ^(85)Rb atoms for the triplet state(a^(3)∑_(u)^(+))are researched.The s-wave scattering lengts of ^(23)Na and ^(85)Rb are calculate by the Numerov ana s...The elastic scattering Properties between ultracold ^(23)Na and ^(85)Rb atoms for the triplet state(a^(3)∑_(u)^(+))are researched.The s-wave scattering lengts of ^(23)Na and ^(85)Rb are calculate by the Numerov ana semtc asstc method with two kinds of interatomic potentials,which are the interpolation potential and Lennard-Jones potential(LJ_(12,6))by the same phase φ.Shape resonances appear clearly in the l=5 partial waves for the (a^(3)∑_(u)^(+))state.Moreover,the s-wave scattering cross section,total cross section and energy positions of shape resonances are also discussed.展开更多
In this paper,we find a subclass of starlike functions on the unit disk,which are mapped by a operator,given by F（z）=1＋u/zu∫z0 f（t）tu-1dt（Re u≥0）,onto convex functions.The main results extend some known results.
This paper studies the stochastic synchronization problem for time-varying complex dynamical networks. This model is totally different from some existing network models. Based on the Lyapunov stability theory, inequal...This paper studies the stochastic synchronization problem for time-varying complex dynamical networks. This model is totally different from some existing network models. Based on the Lyapunov stability theory, inequality techniques, and the properties of the Weiner process, some controllers and adaptive laws are designed to ensure achieving stochastic synchronization of a complex dynamical network model. A sufficient synchronization condition is given to ensure that the proposed network model is mean-square stable. Theoretical analysis and numerical simulation fully verify the main results.展开更多
We study exciton transfer dynamics in a trimer system by investigating excitation transfer probability （ETP）. We calculate ETP in the zero-temperature limit and theoretically predict the environment-assisted quantum...We study exciton transfer dynamics in a trimer system by investigating excitation transfer probability （ETP）. We calculate ETP in the zero-temperature limit and theoretically predict the environment-assisted quantum critical effect, in which ETP exhibits a sudden change at the critical point of quantum phase transition for the trimer. In particular, we find that the steady-state ETP can be observed in the presence of the environment interaction.展开更多
Nucleosynthesis in advection-dominated accretion flow （ADAF） onto a black hole is proposed to be an important role in chemical evolution around compact stars. We investigate the nucleosynthesis in ADAF relevant for ...Nucleosynthesis in advection-dominated accretion flow （ADAF） onto a black hole is proposed to be an important role in chemical evolution around compact stars. We investigate the nucleosynthesis in ADAF relevant for a black hole of low mass, different from that of the self-similar solution. In particular, the presence of supersolar metal mass fractions of some isotopes seems to be associated with the known black hole nucleosynthesis in ADAF, which offers further evidence of diversity of the chemical enrichment.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 50972056.
文摘Strontium titanate films with high a-axis-orientation [a(100) =94.1%] were deposited on (111) Pt/Ti/SiO_(2)/Si substrates by the metal organic deposition process.X-ray diffraction shows that the degree of a-axis orientation increases with increasing annealing temperature.It is found that the dielectric properties are improved by a higher annealing temperature,while the leakage currents are also enhanced,and the possible causes of temperature dependence are discussed.
基金Supported by the National Natural Science Foundation of China under Grant No 60974139the Fundamental Research Funds for the Central Universities under Grant No 72103676.
文摘We introduce a hybrid feedback control scheme to design a controller for the projective synchronization of complex dynamical networks with unknown periodically time-varying parameters.A differential-difference mixed parametric learning law and an adaptive learning control law are constructed to ensure the asymptotic convergence of the error in the sense of square error norm.Moreover,numerical simulation results are used to verify the effectiveness of the proposed method.
基金Supported by the National Natural Science Foundation of China under Grant Nos 10874064,60876014 and 60976014the Natural Science Foundation of Henan Province under Grant No 072300410180+1 种基金and the Program for Science and Technology for Innovation Talents in Universities of Henan Province under Grant No 2008HASTIT029the Innovation Scientists and Technicians Troop Construction Projects of Henan Province under Grant No 104100510018.
文摘The elastic scattering Properties between ultracold ^(23)Na and ^(85)Rb atoms for the triplet state(a^(3)∑_(u)^(+))are researched.The s-wave scattering lengts of ^(23)Na and ^(85)Rb are calculate by the Numerov ana semtc asstc method with two kinds of interatomic potentials,which are the interpolation potential and Lennard-Jones potential(LJ_(12,6))by the same phase φ.Shape resonances appear clearly in the l=5 partial waves for the (a^(3)∑_(u)^(+))state.Moreover,the s-wave scattering cross section,total cross section and energy positions of shape resonances are also discussed.
基金Supported by the National Natural Science Foundation of Mathematics Tianyuan Fund（A0524629）
文摘In this paper,we find a subclass of starlike functions on the unit disk,which are mapped by a operator,given by F（z）=1＋u/zu∫z0 f（t）tu-1dt（Re u≥0）,onto convex functions.The main results extend some known results.
基金supported by the National Natural Science Foundation of China (Grant No.60974139)the Fundamental Research Funds for the Central Universities (Grant No.72103676)
文摘This paper studies the stochastic synchronization problem for time-varying complex dynamical networks. This model is totally different from some existing network models. Based on the Lyapunov stability theory, inequality techniques, and the properties of the Weiner process, some controllers and adaptive laws are designed to ensure achieving stochastic synchronization of a complex dynamical network model. A sufficient synchronization condition is given to ensure that the proposed network model is mean-square stable. Theoretical analysis and numerical simulation fully verify the main results.
基金Project supported by the National Natural Science Foundation of China (Grant No. 11075050)the National Basic Research Program of China (Grant No. 2013CB921804)+1 种基金the Program for Changjiang Scholars and Innovative Research Team in University, China (Grant No. IRT0964)the Hunan Provincial National Science Foundation, China (Grant No. 11JJ7001)
文摘We study exciton transfer dynamics in a trimer system by investigating excitation transfer probability （ETP）. We calculate ETP in the zero-temperature limit and theoretically predict the environment-assisted quantum critical effect, in which ETP exhibits a sudden change at the critical point of quantum phase transition for the trimer. In particular, we find that the steady-state ETP can be observed in the presence of the environment interaction.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11547041,11403007,11673007,11643007,11333004,U1531130,11673059,11390374 and 11521303the Chinese Academy of Sciences under Grant Nos KJZD-EW-M06-01and QYZDB-SSW-SYS001
文摘Nucleosynthesis in advection-dominated accretion flow （ADAF） onto a black hole is proposed to be an important role in chemical evolution around compact stars. We investigate the nucleosynthesis in ADAF relevant for a black hole of low mass, different from that of the self-similar solution. In particular, the presence of supersolar metal mass fractions of some isotopes seems to be associated with the known black hole nucleosynthesis in ADAF, which offers further evidence of diversity of the chemical enrichment.
