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In this paper,a threshold authentication scheme of ad hoe network based on elliptic curve is proposed,in using Lagrange Theorem to generate the group key and in using the digital signature algorithm based on elliptic curve to generate and merge the sub certificates.

论文提出一种基于椭圆曲线的门限身份认证方案，利用拉格朗日定理生成群密钥并利用椭圆曲线数字签名算法生成子证书并合成，该算法的安全性、高效率以及低计算复杂度特别适合Ad hoc网络移动自组的特点。

The methods are as follows: the first is for Hammerstein-type nonlinear system model with known upper value of its order; the second is for the nonlinear system model based on the nonlinear Laguerre model derived from the Volterra series input-output presentation, and the third is for the Wiener-type nonlinear system model based on the combination of Laguerre function with neural networks.

给出了三类非线性系统的即时线性化自适应预测控制策略，即(1)已知非线性子系统阶次上限值的Hammerstein型非线性系统；(2)基于Volterra-Laguerre函数模型的非线性系统；(3)基于Laguerre函数与神经网络的组合模型的Wiener型非线性系统。

We also show two approaches to determine outer sections of double-volute passage with the same flow rate: one is based on functions in foreign literatures; the other based on principle of conservation law of moment of momentum.

同时，介绍了双蜗壳外侧等流量断面的两种设计绘形方法，即基于国外统计资料的速度系数法和基于速度矩守恒原则的数字积分方法。

In this paper, a new vehicle collision model based on deformation energy is presented, through establishing two supplement equations based on restitute coefficient and energy loss, and combining the law of conservation of momentum, the speed before collision can be calculated.

提出了基于变形能的汽车碰撞分析新模型，以动量守恒为基础，根据恢复系数与碰撞过程中的能量损失，建立补充方程来进行碰撞过程的分析计算。

Psychotherapists prove no more accurate than laypeople in making inferences based on facial expressions; however, they're significantly more accurate in making inferences based on language.

和普通人，心理治疗医师在根据面部表情做出推论上并不会更准确，不过在基于语言进行的推论上，他们准确程度要高很多。

Based on LEACH protocol,this paper proposes a new Clustering Algorithm based on Load-balance and Residual Energy for WSN.

在LEACH协议的基础上提出了基于负载均衡和剩余能量的无线传感器网络分簇算法。

Based on the side veins, distance between leaf base and breadth, leaves length, leaves breadth and leafstalk length, populations initially could be compartmentalized three different niche types. Based on the angle of foliage, it could be compartmentalized two niche types.

根据侧脉、基宽距、叶长、叶宽、叶柄长，可初步将各居群分别划分为三种不同的生态型，而根据叶基角，连香树可划分为两个生态型。

A beamforming algorithm of array with virtual based on least squares estimator is presented, and the modified algorithm is proposed further. In this thesis, we also study the beamforming algorithm of array with virtual elements based on time delay and summation.

提出了基于线性预测的虚拟阵元波束形成方法，提出了基于最小二乘估计的虚拟阵元波束形成方法，并进一步提出了基于最小二乘估计的虚拟阵元波束形成方法的改进方法，最后研究了延迟求和虚拟阵元波束形成方法。

After studying the theory of combined signal processing with acoustic pressure and particle velocity, a method of direction estimation underwater, which is based on intensity measurement using an acoustic vector sensor, is presented. In the low frequency field with kinds of line-spectra, azimuth angle estimation is achieved based on the probability density statistics and bar graph approach. It can preferably resolve the problem of left/right bearing resolution and estimate the direction of space.

为了对水下目标进行定位，基于声压与振速联合信号处理的理论，研究了复声强法对水下目标信号的定向技术，并使用概率统计和直方图的理论对目标的方位角和俯仰角值进行了估计，在线谱分量存在的低频段对估计角度进行了概率统计，较好地解决了左右舷的分辨问题，实现目标的全空间无模糊定向。

Based on the analysis of current situation of urban traffic signal control, a method of single intersection signal control was presented based on fuzzy neural network control. Density of vehicle flow of current and next phase was determined by detecting the queue length of the current and next phase, so that it was further determined whether the phase should be changed or not.

在分析城市交通信号控制研究现状的基础上，提出一种基于神经网络模糊控制的单路口交通信号灯控制方法，通过检测当前相位的排队长度和下一相位的排队长度得出当前相位以及下一相位的车流密度，进而判断是否进行相位变换。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。