多元模型的长尾相依大偏差的下界

研究了在多元模型中的服从长尾分布且带有负相依的随机变量和的尾概率,在给定的一些条件下通过采用多元大偏差的方法得到了随机变量的非随机和和随机和的大偏差的下界,推广了相应的独立同分布情形下的结论.     

Immune Responses to a Dicistronic Plasmid Expressing HBsAg of Hepatitis B Virus and Interferon-γ

DNA vaccines encoding a viral protein have been shown to induce antiviral immune responses and provide protection against subsequent viral challenge.The present article deals with the efficacy of a DNA vaccine greatly improved by the simultaneous expression of HBsAg and interferon-γ gene.We constructed a dual expression vector pHIN encoding the HBsAg of Hepatitis B virus and murine IFN-γ which are connected with Internal Ribosome Entry Site(IRES).Mice immunized with this dual expression DNA vaccine exhibited the enhancement of cellular immune response and increased the production of anti-HBV surface antibody,compared with the mice of single gene expression control.Taken together,these results demonstrate that the application of a cytokine gene in a DNA vaccine formulation as an adjuvant can improve its immunigenicity.     

第一讲台面型电子加速器——激光尾波场加速器

近年来，随着超短超强激光脉冲技术的发展，利用超短超强激光在等离子体中激发出的高强度尾波场来实现电子加速的方案也取得了巨大进展．相对于传统的射频腔加速器，这种新型的加速器由于以等离子体为介质，可以突破传统加速器中加速梯度小于100MV／m的限制，其加速梯度可以达到100GV／m．电子在这样的加速场下，在厘米量级的距离内就可以获得GeV的能量．随着台面型超短超强激光器的发展，新一代实用化的台面型电子加速器有望在不远的将来得以实现．文章将从理论和实验上对激光尾波场加速中的尾波激发、电子注入、距离延长三个方面加以介绍，同时给出国内在这些方面的一些研究进展．     

对突破工科近代物理教学一个瓶颈问题的探讨

在工科近代物理教学中,量子力学部分所占比例非常少,而量子力学基础教学中的一个瓶颈在于算符和算符本征值与力学量概率分布的关系.介绍了为突破这一瓶颈,在教材建设和教学实践中所做的改进.     

Al2Hx(x=1～3)分子团簇结构与光谱研究

用密度泛函理论(DFT)的B3LYP方法在6-311 g(d,p)水平上对Al2Hx(x=1~3)分子团簇的几何构型、电子结构、振动频率、垂直电离能和垂直电子亲和能等性质进行了理论研究.通过对基态结构的几何参数分析发现,它们的基态结构趋于对称性较高的构型.它们的基态结构为:Al2H(2A1)C2V,Al2H2(1Ag)D2h和Al2H3(2A′1)D3h.对基态结构的垂直电离能讨论表明,氢原子数从1增加到3,其气态分子越来越稳定.     

Arbitrary Partially Entangled Three-Electron W State Concentration with Controlled-Not Gates

We describe an efficient entanglement concentration protocol （ECP） for an arbitrary partially entangled threeelectron W state. We show that with the help of two ancillary single electrons, the concentration task can be well completed. This ECP has several advantages： Firstly, we only require one pair of partially entangled states. Secondly, only two single electrons are used during the whole protocol. Thirdly, we do not require all the parties to participate in the whole process, and only two parties are needed to perform the operation. Fourthly, the protocol can 5e repeated to obtain a high success probability. This ECP may be useful in current quantum computation and quantum communication.     

The Electronic Structure and Formation Energies of Ni-doped CuAlO2 by Density Functional Theory Calculation

The electronic structure and formation energies of Ni-doped CuAlO2 are calculated by first-principles calculations. Our results show that Ni is good for p-type doping in CuAlO2. When Ni is doped into CuAlO2, it prefers to substitute Al-site. NiAl is a shallow acceptor, while NiCu is a deep acceptor and its formation energy is high. Further electronic structure calculations show that strong hybridization happens between Ni-3d and O-2p states for Ni substituting Al-site, while localized Ni-3d states are found for Ni substituting Cu-site.     

Study of just noticeable difference of the reverberance with Chinese instrumental music

The just noticeable difference （JND） of the reverberance was tested using the constant-stimulus, method. Some factors that may influence the tested results are analyzed to validate the experimental data. The test materials are the Chinese instrumental music. Three subjects groups were tested, including the audio technician group, the students from audio engineering department and a group of postgraduates majoring in acoustics. It is found that the value of JND of reverberance is about 25%. The difference possibly caused by the professional training and experience of different subjects groups is noticeable, but the difference caused by different music motifs is insignificant.     

激光成珠大小镶嵌高效率逆反射列阵膜

用激光制成的微珠 ,并用大小珠镶嵌成逆反射列阵膜; 从原理上和实验效果上均优于目前具有 代表性的中国椒江公司 901膜和美国 3M公司 8910膜 . 它对交通标志的更新换代和国防应用具有产业 化前景 .     

改进的基于过程代数的BPR方法及应用研究

针对基于过程代数的BPR方法在描述和分析复杂业务流程时存在的不足，提出了改进的基于过程代数的BPR方法，并应用该方法描述和分析传统物流配送业务流程，同时结合BPR原则和电子商务环境下物流配送的特点对传统物流配送业务流程进行重组，从而构建了适应电子商务环境的物流配送业务流程。最后，通过对流程重组前后评价指标的计算，取得了令人满意的结果。