三链λ－DNA的UV，CD，Raman及荧光光谱分析

本文报道了λ－ＤＮＡ三链结构水溶液的ＵＶ，ＣＤ，荧光及Ｒａｍａｎ等光谱特性。比较该三链新结构与单，双链ＤＮＡ不同的光谱性质，确证了前者不同寻常的结构特征。     

一个改进的SQP型算法

本文建立非线性等式和不等式约束规划问题的一个序列二次规划(SQP)型算法.算法的每次迭代只需解一个确实可解的二次规划，然后对其解进行简单的显式校正，便可产生关于罚函数是下降的搜索方向，克服Maratos效应.在适当的假设条件下，还论证了算法的全局收敛性和超级收敛性.     

爱可尔斯定理的再推广

爱可尔斯定理的再推广赵立宽（曲阜师范大学教学与计算机科学系２７３１６５）［１］中介绍了关于两个正三角形的定理：爱可尔斯定理１如果△ｚ１ｚ２ｚ３和△ｕ１ｕ２ｕ３都是正三角形，则线段ｚ１ｕ１，ｚ２ｕ２，ｚ３ｕ３的中点也作成正三角形．尽可尔斯定理２如果△ｚ...     

Generalized reduced-order synchronization of chaotic system based on fast slide mode

A new kind of generalized reduced-order synchronization of different chaotic systems is proposed in this paper. It is shown that dynamical evolution of third-order oscillator can be synchronized with the canonical projection of a fourth-order chaotic system generated through nonsingular states transformation from a cell neural net chaotic system. In this sense, it is said that generalized synchronization is achieved in reduced-order. The synchronization discussed here expands the scope of reduced-order synchronization studied in relevant literatures. In this way, we can achieve generalized reduced-order synchronization between many famous chaotic systems such as the second-order D\"{u}ffing system and the third-order Lorenz system by designing a fast slide mode controller. Simulation results are provided to verify the operation of the designed synchronization.     

康普顿背散射技术对贮存环电子束诊断及其应用 II贮存环电子束的极化度测量

简单介绍以激光 电子康普顿背散射原理为基础建立的康普顿背散射极化仪,采用它能实时、非破坏性地监测电子束的极化.该项工作可作为上海激光电子γ源(SLEGS)低能γ束应用研究的内容之一.     

Infinity Behavior of Bounded Subharmonic Functions on Ricci Non-negative Manifolds

In this paper,we study the infinity behavior of the bounded subharmonic functions on a Ricci non-negative Riemannian manifold M.We first show that limr→∞r^2/V(r)∫B(r)△hdv=0if h is a bounded subharmonic function.If we further assume that the Laplacian decays pointwisely faster than quadratically we show that h approaches its supremun pointwisely at infinity,under certain auxiliary conditions on the volume growth of M.In particular,our result applies to the case when the Riemannian manifold has maximum volume growth.We also derive a representation formula in our paper,from which one can easily derive Yau‘s Liouville theorem on bounded harmonic functions.     

Infimum Properties Differ in the Weak Truth-table Degrees and the Turing Degrees

Abstract We prove that there are non-recursive r.e. sets A and C with A < _T C such that for every set . Both authors are supported by “863” and the National Science Foundation of China     

Order Environments of Topological Spaces

In this paper it is proved that a space may be realized as the set of the maximal elements in a continuous poset if and only if it is Tychonoff.     

利用非参数方法对上海股市周末效应的研究

本文首先利用基本统计分析和Kolmogorov -Smirnov检验发现沪市指数收益率不服从正态分布 ,随后利用了K -W检验考察周末效应的存在性 ,利用M -W检验考察周末效应的模式 ,最后利用了Levene检验来对收益率序列的方差进行分析 ,得出上海股市存在“二、五”效应的结论。并从结算制度、信息流的影响、信息披露制度等方面分析了成因。     

一类"停走"生成器输出序列符合率的计算

本文考察了"停走"生成器输出序列{Xn}的一个子列{X2n}与原序列{Zn}的符合率问题,并在此基础上推广到更一般的情况,证明了在本文所指的一类钟控模型中,当g(n)=2n时,其输出序列与原序列的符合率达到最大