下界的

For any abelian function field L, we give a lower bound for the Weil heightdepending only on its conductor.

六我们对于任一Abel函数域L给出Weil高度仅依赖于L导子的下界。

Under an infinite-horizon risksensitive cost criterion, the controller designed can guarantee an arbitrary small longterm average cost for arbitrary risk-sensitivity parameter and achieve boundedness in probability for the closed-loop system using the integrator backstepping methodology.

在无限时区风险灵敏度指标下，应用积分反推技术，设计了控制器。所设计的控制器能够保障对任意风险灵敏度系数具有任意小的指标，并且闭环系统为概率意义下有界的。

Based on the special pilot pattern, the frequency offset estimation is obtained by the correlation of the pilot symbols; the Cramer-Rao Low Bounder of the frequency offset estimator is given for different channels.

在该导频序列的基础上，利用导频符号之间的相关性推导出频偏估计器，得到了该估计器在不同信道下的Cramer-Rao下界。

Excitation condition, and the upper bound of the parameter estimation error is derived.

提出了多新息随机梯度算法，分析了持续激励下算法的估计误差上界，阐述

Under the assumptuion that the lower bound of the density of the observed nonlinear AR (1) time series is known, we prove that the nonlinear wavelet estimator of the conditional mean function g, which is similiar with the one introduced in Chapter 2, still has the same good adaptive properties for this kind of nonlinear AR (1) series on account of the moment inequalities and exponential type inequalities for strong mixing processes.

在假设观测序列的的密度函数的下界已知的条件下，我们利用关于强混合过程的矩不等式以及指数型不等式证明了类似于上一章的小波估计对于非线性AR（1）模型中条件均值函数的非参数函数估计仍然具有优良的自适应性质，并同样给出了数值模拟的结果分析。

The property of extended sub-positive definite matrix is studied further by means of the method of matrix analysis to obtain the lower estimated Oppenheim inequality of Hadamard multiplication determinant to two extended sub-positive definite matrices under more general conditions and improve the past in the adaptation range and estimated exactness.

用矩阵分析的方法，通过对广义次正定矩阵性质的进一步研究，得到了更一般条件下的两个广义次正定矩阵的Hadamard乘积的行列式下界估计的Oppenheim不等式，在适用范围和估计精度上都改进了已有的相应结果。

With a suitable performance function and an initial control that made the closed system bounded, a serial of controls that made the performances better could be obtained by policy iteration, and ergodic Markov chains were constructed by the state serial with the corresponding feedback control.

在合适的性能指标并能找到一个使系统性能有界的控制的前提下，通过策略迭代可以求出逐步改善系统性能的控制序列，同时得到状态序列在相应反馈控制作用下构成遍历的马尔可夫链。

The superiority of a class of linear estimator with respect to generalized least square(GLS estimator of regression coefficients was studied in terms of the mean square error matrix(MSEM criterion, and the lower bound and super bound of three relative efficiencies were obtained respectively.

在均方误差矩阵准则下研究了回归系数的一类线性估计相对于广义最小二乘估计的优良性问题，并讨论了三种不同相对效率的上、下界。

5The OCT reconstruction is notstable in the meaning of L2 norm,but extended to Sobolev space,it has a stablebehavior.

5OCT的重建问题在一般L2范数意义下是不稳定的，即系统可能因为小的扰动而剧烈震荡；但在Sobolev空间、规定的范数意义下，能够保证，理想的OCT数学模型中的重建问题是稳定有界的。

We analyse the probability of success in deception by malicious groups of receivers, discuss the threshould schemes with limited the number of malicious receivers, give the calculation formule of probability of successful attacks in any transmitted information, and information - theoretic lower bounds,show the size of the secret key space for each participation under the securiey level, provide the construction about the authentication schemes.

第三部分提出了动态会议认证系统，利用动态会议系统的特点，引入验证密钥集，我们运用熵函数，交互信息量及概率分布等方法，对限制内部欺骗者个数的情况进行了分析，得出了欺骗者对系统实施各种攻击成功概率的计算公式及信息论下界，说明了系统在某一安全水平下，各用户应掌握的密钥量。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。