摘要：In this paper, we study the thermodynamic geometry for the charged Ad S black hole surrounded by quintessence. Three different kinds of the geometries are constructed, and the corresponding curvatures are obtained. It is found that there are different divergence behaviors of these curvatures, which is general thought to closely link to the phase transition of the black hole.

摘要：基于本科生动手观测实习与研究生实测研究等多方需求,结合学校资源,经系统调研与可行性评估,搭建了一套昼夜通用型光谱望远镜多功能教学实验平台。该平台解决了常规夜间光学天文观测设备不宜于开展白天太阳光谱观测的问题,经综合实验设计评估后可以根据教学实验需求开展白天太阳光谱观测与夜间恒星光谱观测等不同观测实验,旨在为学生的天文实测教育与科学研究提供一个高效、多功能的实验平台。该平台专为高等院校的天文课程教学设计,不仅能有效提升学生在动手操作和观测研究方面的技能,还能为本科生的教学实测和研究生的科研实习提供重要支持。

摘要：We investigate the area and entropy spectra of D-dimensional large Schwarzschild black holes. By utilizing the new physical interpretation of quasinormal mode frequency we find that a large Schwarzschild-AdS black hole has an equally spaced area spectrum and an equidistant entropy spectrum; both are dependent on the spacetime dimension.

摘要：阿里原初引力波项目为保护望远镜提出了独特的环境保护罩方案,该研究针对该方案的高度轴系结构及控制策略展开。首先,根据望远镜运行模式对高度轴系进行运动及结构方案设计,建立系统的接触和摩擦模型,并进行动力学仿真。基于仿真结果提出基于目标位置的力矩补偿双电机控制策略,并为主动电机设计了基于SAPSO-BP策略的PID控制器。控制系统仿真结果表明,基于SAPSOBP的PID控制器在1°/s阶跃信号下,相对于调节时间相同的PSO-BP策略超调量减少了6%,且在一定扰动下能够更好地抑制峰值误差。通过对高度轴系统验证,该控制策略在1°/s及2°/s阶跃信号、梯形信号以及正弦信号下表现出了良好的跟随性能,并可以实现主从电机的协调分配与稳定运行,其速度跟踪误差均满足设计要求。

摘要：广告人终究不是地球超人,但好的创意,多多少少能唤起一些对环境恶化的留意。近年来依靠公益、环保为题,在国际大赛中出位的创意作品越来越多,这是好事,但同时更值得我们留意的是,如果破坏仍在继续,再伟大的创意也无法拯救地球。

摘要：通过阐述创意与现代平面设计的关系 ,揭示出现代平面设计要求设计者在观念、知识及技能等多方面提高综合素质。继承与发展民族文化 ,为现代平面设计开辟广阔的前景。

摘要：We construct a holographic p-wave superconductor model in the background of quintessence AdS black hole with an SU（2） Yang-Mills gauge field and then probe the effects of quintessence on the holographic p-wave superconduc- tor. We investigate the relation between the critical temperature and the state parameter of quintessence, and present the numerical results for electric conductivity. It is shown that the condensation of the vector field becomes harder as the absolute value of the state parameter increases. Unlike the scalar condensate in the s-wave model, the condensation of the vector field in p-wave model can occur in the total value range of the state parameter wq of quintessence. These results could help us know more about holographic superconductor and dark energy.

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摘要：We study the self-gravitating stars with a linear equation of state, P = aρ, in AdS space, where a is a constant parameter. There exists a critical dimension, beyond which the stars are always stable with any central energy density; below which there exists a maximal mass configuration for a certain central energy density and when the central energy density continues to increase, the configuration becomes unstable. We find that the critical dimension depends on the parameter a, it runs from d = 11.1429 to 10.1291 as a varies from a = 0 to 1. The lowest integer dimension for a dynamically stable self-gravitating configuration should be d = 12 for any a E [0, 1] rather than d = 11, the latter is the case of self-gravitating radiation configurations in AdS space.

摘要：Thermodynamics of phase transition for a black hole in 5D Einstein-Gauss-Bonnet gravity with a negative cosmological constant is *** the Bekenstein-Hawking entropy is adopted,we find the heat capacity,volume expansion coefficient and isothermal compressibility are divergent at the critical points,which implies the existence of phase *** fact that the phase transitions are indeed second order is revealed by studying the Ehrenfest's equations and the Prigogine-Defay *** near the critical points,we also explicitly calculate the critical exponents of the relevant thermodynamic quantities at fixed charge or fixed *** is shown that the corresponding critical exponents satisfy the thermodynamic scaling *** Generalized Homogeneous Function hypothesis is also checked by studying the Helmholtz free energy,which is shown to be consistent with the thermodynamic scaling law.