含氧酸及其盐氧化还原中几个问题的探讨

对北京师范大学等3校无机化学教研室编写的《无机化学》(第4版)中阐述的关于含氧酸及其盐氧化性的观点进行讨论。指出含氧酸中R—O键的键能、还原产物的稳定性、伴随氧化还原反应的其他能量效应和反应的熵变是影响含氧酸氧化性的4种因素;对中心原子获得电子的能力作为含氧酸氧化性的主要影响因素和用反极化作用解释含氧酸氧化性的观点提出了质疑;基于氧化还原过程的能量变化和浓度对电极电势值的影响,对低氧化态含氧酸氧化性较强、浓酸的氧化性比稀酸强和含氧酸的氧化性比含氧酸盐强的问题作出了合理的分析。     

“互联网+回收”情境下基于演化博弈的电子废弃物回收合作机理研究

基于“互联网+回收”情境,研究网络回收商和流动回收小贩在电子废弃物回收中的竞合关系,构建演化博弈模型,刻画演化博弈过程,分析相关因素对演化稳定策略走向的影响。研究结果表明,网络回收商和流动回收商小贩选择合作策略的概率与违约惩罚力度、合作后的超额收益正相关,与合作后的共同成本、单独选择合作策略付出的成本以及因搭便车行为增加的收益负相关。由于分别存在最优的超额收益分配率和共同成本分摊率,网络回收商和流动回收小贩选择合作策略的概率最大。     

Quantum Anonymous Voting Protocol with the Privacy Protection of the Candidate

In this paper, we propose a new quantum anonymous voting protocol, which protects the privacy of not only the voting content of the voters, but also the number of the votes received by the candidate. Compared with previous protocols, our protocol considers the privacy of the candidate, so it can meet higher secure requirements. In addition, this protocol provides identity authentication for the voters, which ensures that only the legal voters can vote.

     

Fault-Tolerant Quantum Anonymous Voting Protocol

In this paper, we propose a new fault-tolerant quantum anonymous voting protocol, which is designed to be robust against the collective-phasing noise and the collective-rotation noise. In the proposed protocol, the scrutineer, Charlie, prepares the photons sequence, which is used not only as the quantum ballot ticket, but also to authenticate the voter’s (i.e., Alice) identity. Especially it can realize the detection of Alice’s identity during the voting process. At the same time, the proposed protocol solves the problem of non-reusability of the quantum anonymous voting. Compared with other quantum anonymous voting protocols, our quantum anonymous voting protocol is more secure and practical.

     

Z-扫描参量对薄膜材料三阶非线性光学特性的影响

采用数值计算方法对薄膜材料的Z-扫描参量进行研究.对不同激光脉宽下Z-扫描的三阶非线性折射系数和吸收系数进行分析,结果显示不同等级的脉宽激光器对计算结果的数量级影响很大.对不同小孔光阑半径的Z-扫描闭孔曲线进行仿真,结果显示光阑小孔越小,获得特征曲线的峰谷值越明显.对不同光阑离透镜焦点的距离值进行Z-扫描闭孔曲线仿真,结果显示距离为1/2透镜焦距值时闭孔Z-扫描曲线能得到相对较大的峰谷差值.数值分析结果与相关文献报道的实验结果基本一致.     

高效液相色谱-蒸发光散射法测定皂荚壳多糖的单糖组分及其含量

提出了高效液相色谱法测定皂荚壳多糖的单糖组分及其含量的方法。皂荚壳样品经乙醇-水(95+5)溶液提取,滤液经分级沉淀除去蛋白质,过中空纤维膜净化。以ZORBAX Carbohy-drate色谱柱(4.6mm×250mm,5μm)分离,以不同体积比的乙腈和水为流动相进行梯度洗脱,用蒸发光散射检测器检测。鼠李糖、核糖、木糖、阿拉伯糖、果糖、甘露糖、葡萄糖、山梨醇和半乳糖等9种单糖的质量浓度分别在一定的范围内与其峰面积呈线性关系,方法的检出限(3S/N)在0.010～0.048g.L-1之间。采用标准加入法做回收试验,平均回收率在99.3%～101%之间,测定值的相对标准偏差(n=8)均小于0.2%。     

Vector variational inequalities and vector optimization problems on Hadamard manifolds

In this paper, we introduce a Minty type vector variational inequality, a Stampacchia type vector variational inequality, and the weak forms of them, which are all defined by means of subdifferentials on Hadamard manifolds. We also study the equivalent relations between the vector variational inequalities and nonsmooth convex vector optimization problems. By using the equivalent relations and an analogous to KKM lemma, we give some existence theorems for weakly efficient solutions of convex vector optimization problems under relaxed compact assumptions.     

GaN基LED溢出电流的模拟

通过分析影响电子溢出的因素,建立多量子阱的物理模型,得到溢出电流表达式.研究了外加电压与极化效应对溢出电流的影响,认为极化效应使能带弯曲,电子溢出量子阱,溢出电流大幅度增加.考虑了LED散热和载流子屏蔽效应对溢出电流的影响,并为减小溢出电流提供了思路.     

Vector variational inequality with pseudoconvexity on Hadamard manifolds

In this paper, we give some properties for nondifferentiable pseudoconvex functions on Hadamard manifolds, and discuss the connections between pseudoconvex functions and pseudomonotone vector fields. Moreover, we study Minty and Stampacchia vector variational inequalities, which are formulated in terms of Clarke subdifferential for nonsmooth functions. Some relations between the vector variational inequalities and nonsmooth vector optimization problems are established under pseudoconvexity or pseudomonotonicity. The results presented in this paper extend some corresponding known results given in the literatures.     

基于DMC方法的城市空气质量SUR模型研究

我国现阶段城市化的日益发展,使城市空气质量的宏观调控面临越来越大的压力。本文建立了关于空气质量的似乎不相关(SUR)模型,采用Jeffreys's的不变先验分析直接蒙特卡罗(DMC)方法,计算各参数的贝叶斯后验密度和未来值的预测密度。对中国厦门市区三项污染指标及四项外部驱动因素的数据进行实证分析,并将其与贝叶斯分层模型得出的结果进行比较。