The average-shadowing property and transitivity for continuous flows

We prove that a continuous flow with the average-shadowing property is chain transitive and a Lyapunov stable continuous flow with the average-shadowing property is a minimal flow.     

证券组合投资的多目标区间数线性规划模型

本文提出了证券组合投资的多目标区间数线性规划模型，引入了收益——风险偏好参数和优化水平参数。投资者可以根据对风险的喜好程度和金融市场的客观情况，适当估计这两个参数，从而得到相应情况下的有效投资方案，使投资过程更具柔性，而且更接近于实际情况。     

BERRY-ESSEEN BOUNDS OF ERROR VARIANCE ESTIMATION IN PARTLY LINEAR MODELS

§1.ＩｎｔｒｏｄｕｃｔｉｏｎＣｏｎｓｉｄｅｒｔｈｅｍｏｄｅｌｇｉｖｅｎｂｙＹｉ=ｘｉτβ ｇ(ｔｉ) εｉ,ｉ=1,…,(1.1)ｗｈｅｒｅｘｉ=(ｘｉ1,…,ｘｉｐ)τ(ｐ1)ａｎｄｔｉ(ｔｉ∈[0,1])ａｒｅｋｎｏｗｎｄｅｓｉｇｎｐｏｉｎｔｓ,β=(β1,…,βｐ)τｉｓａｎｕｎｋｎｏｗｎｐａｒａｍｅｔｅｒｖｅｃｔｏｒａｎｄｇｉｓａｎｕｎｋｎｏｗｎｆｕｎｃｔｉｏｎ,ａｎｄεｉａｒｅｉ.ｉ.ｄ.ｒａｎｄｏｍｅｒｒｏｒｓｗｉｔｈｚｅｒｏ0ａｎｄｖａｒｉａｎｃｅσ2.Ｔｈｅｍｏｄｅｌｄｅｆｉｎｅｄｉｎ(1.1)ｂｅｌｏｎｇｓｔｏｔｈｅｃｌａｓｓ…     

非平稳ρ混合序列的完全收敛性

本文进一步研究了ρ－混合序列的完全收敛性，讨论了无界非平稳情形完全收敛性成立的充分和必要条件，获得了理想的结果．     

回归函数改良核估计的相合性

一、引言及若干引理设(X_1,Y_1),…,(X_n,Y_n)为(X,Y)的前 n 个样本,(X,Y)为 R~d×R 上的随机向量,μ为 X 的概率分布,回归函数 m(x)=E(Y|X=x)的核估计为     

Convergence of a class of means of Hp functions (0<p<1) on compact lie groups

In this paper we study the convergence of a class of means on H^p(G) (0<p<1), the means take the Bochner-Riesz means in [1], the generalized Bochner-Riesz means in [2], and the operators T^σ, in [3] as special cases. We obtain weak-type estimates for the associated maximal operators and the maximal mean boundedness for the means. Supported by NSFC     

含一个非线性项混沌系统的线性控制及反控制

研究了一类仅含一个非线性项混沌系统的线性控制与反控制,根据Routh-Hurwitz稳定性条件,先对这类混沌系统进行控制,使其达到稳定的状态,然后改变控制系数,使其再次产生混沌,得到一个新的混沌系统,并对这个新的混沌系统的基本动力学行为进行了分析,数值仿真也验证了新系统的混沌性态.     

对-二甲氨基苯甲醛苯甲酰腙及其锌(Ⅱ)、镉(Ⅱ)配合物的合成与光学性质

合成了对-二甲氨基苯甲醛苯甲酰腙(配体)及其锌(Ⅱ)、镉(Ⅱ)配合物,通过元素分析、IR、MS对结构进行表征,研究了配体及锌(Ⅱ)、镉(Ⅱ)配合物的紫外光谱和荧光光谱。这些物质都有较强的荧光,适合掺入涂料中做成荧光涂料。     

A novel method to realize the transition from silver nanowires to nanoplates based on the degradation of DNA

Journal of Nanoparticle Research - Silver “nano-necklaces” and nanoplates in DNA/Tris–EDTA (TE) solution are prepared using hydrothermal method. The nano-necklaces are composed of...     

An Efficient Scheme for Multiparty Multi-particle State Sharing

We present an efficient scheme for sharing an arbitrary m-qubit state with n agents. In our scheme, the sender Alice first shares m Bell states with the agent Bob, who is designated to recover the original m-qubit state. Furthermore, Alice introduces n- 1 auxiliary particles in the initial state ｜0）, applies Hadamard （H） gate and Controlled-Not （CNOT） gate operations on the particles, which make them entangled with one of m particle pairs in Bell states, and then sends them to the controllers （i.e., other n - 1 agents）, where each controller only holds one particle in hand. After Alice performing m Bell-basis measurements and each controller a single-particle measurement, the recover Bob can obtain the original unknown quantum state by applying the corresponding local unitary operations on his particles. Its intrinsic efficiency for qubits approaches 100%, and the total efficiency really approaches the maximal value.