R-mode Instability of Neutron Star with Non-Newtonian Gravity

The Chandrasekhar-Friedmann-Schutz(CFS) instabilities of r-modes for canonical neutron stars(1.4 M ⊙) with rigid crusts are investigated by using an equation of state of asymmetric nuclear matter with super-soft symmetry energy,where the non-Newtonian gravity proposed in the grand unification theories is also considered.Constrained by the observations of the masses and the spin frequencies for neutron stars,the boundary of the r-mode instability window for a canonical neutron star is obtained,and the results show that the observed neutron stars are all outside the instability window,which is consistent with the theoretical expectation.In addition,an upper limit of the non-Newtonian gravity parameters is also given.     

不同年龄群体的光生物效应评价方式

研究了照明光环境对不同年龄人群的光生物效应定量评价方式。从光照转换角度提出了一种考虑不同年龄人眼透射谱、瞳孔直径以及受光面积的节律因子模型,选取3种不同色温(3 000,4 000,6 000 K)的白光LED光源,在同种照度500 lx下实验测试其光谱分布,并对提出的节律因子进行计算,与之前标准中考虑年龄的修正因子方式进行了线性拟合对比分析。结果表明:在相同色温下,随着年龄的增大,节律因子值逐渐减少;而对于相同年龄,随着色温的增大,节律因子是变大的,此种规律与其他研究人员得出的实验结论一致。从线性拟合相关度上来看,三种色温下两种考虑年龄的节律因子的直线相关度分别为0.958 08,0.958 33,0.957 22,具有较高的相关性。较之于标准中的考虑透光谱方式,本文提出了另外一种考虑不同年龄人眼差异的光生物效应评价方式,尝试对人眼模型的透射谱进行绝对而不是相对效应的考虑方式。     

基于合作博弈的组装供应链转移定价策略

研究了由n个供应互补的原料产品的上游供应商和一个组装生产最终产品的下游组装商组成的集团公司内部的转移价格问题。其中下游组装商面临的是一个价格敏感型的需求。每个上游供应商可以独立决策其销售价格,并决定是否以谈判的价格出售原料产品给下游组装商。供应链系统内的所有供应商和组装商都可以自由决定彼此之间是否进行合作。结果表明,在大联盟结构下,供应链的利润是最高的。为了分配大联盟结构下供应链系统总的利润,本文构造了特征函数具有超模性质的合作博弈,并利用Shapley值分配方法给出了整个供应链系统内部的转移价格。     

Filtering noisy chaotic signal via sparse representation based on random frame dictionary

The denoising problem of impure chaotic signals is addressed in this paper. A method based on sparse representation is proposed, in which the random frame dictionary is generated by a chaotic random search algorithm. The numerical simulation shows the proposed algorithm outperforms those recently reported alternative denoising methods.     

A scattering matrix approach to quantum pumping: beyond the small-AC-driving-amplitude limit

In the adiabatic and weak-modulation quantum pump, net electron flow is driven from one reservoir to another by absorbing or emitting an energy quantum hω from or to the reservoirs. This paper considers high-order dependence of the scattering matrix on the time. Non-sinusoidal behaviour of strong pumping is revealed. The relation between the pumped current and the ac driving amplitude varies from power of 2, 1 to 1/2 when stronger modulation is exerted. Open experimental observation can be interpreted by multi-energy-quantum-related processes.     

股价最简微分方程,其解及与Black-Scholes模型的假设的相互关系

在系数的某种等价关系条件下,股价的两类数学表达式,一类是基于明确型描述的由类似固体力学方法导出的最简微分方程(S.D.E.)的解,另一类是基于不确定型描述(即统计理论)的Black-Scholes模型的假设(A.B-S.M.),即股价密度函数服从对数正态分布,可以是完全相同的.S.D.E.的解仅适用于股市的常规情形(无利好或利空消息,等),因此,A.B-S.M.的适用范围也相同.     

Energy of Gravitational Field of Static Spherically Symmetric Neutron Stars

By using the Einstein-Tolman expression of the energy-momentum pseudo-tensor, the energy density of the gravitational field of the static spherically symmetric neutron stars is calculated in the Cartesian coordinate system.It is exciting that the energy density of gravitational field is positive and rational The xmmerical results of the energy density of gravitational field of neutron stars are calculated. For neutron stars with M=2M, the ratio of the energy density of gravitational field to the energy density of pure matters would be up to 0.54 at the surface.     

块H-矩阵与块矩阵的谱

利用G-函数概念研究块H-矩阵,引入若干块矩阵概念。获得了块H-矩阵的等价刻划,得到了一般块矩阵特征值的由G-函数描述的分布域,由于用G-函数刻划,所获结果具有一般性。     

Structural and Spacial Characters of Neutron Star in Relativistic σ-ω Model

The analytical and numerical solutions of structure and curvature of two kinds of static spherically symmetric neutron stars are calculated. The results show that Ricci tensor and curvature scalar cannot denote the curly character of the space directly, however, to static spherically symmetric stars, these two quantities can present the relative curly degree of the space and the matter distribution to a certain extent.     

Energy Spectra of a Magnetic Quantum Ring with an Off-Center Impurity

In this paper, we calculate the low-lying spectra of a single-electron magnetic quantum ring with an offcenter Coulomb impurity, where the magnetic field is zero within the ring and constant elsewhere. The impurity, either an acceptor or a donor, is located at a distance d as measured from the plane of the ring along the vertical z direction.The magnetic moments are found in order to get visible discontinuities at the points of the ground-state orbital angular momentum L transitions induced by magnetic fields.