算法

The method has some characteristics:(1) it adapts to medical images authentication due to the high Signal-to-Noise when the watermark was embedded into images.(2) It ensures the fragileness of watermark when it combines with the statistical information of wavelet coefficient to choose the embedding position.(3) It has a strong localization ability for tampering because of the characteristics of wavelet decomposition in the space-frequency domain.(4) It uses the secret key which can resist the malice attack even if opening the algorithm completely to protect the proposed method.

本算法具有以下几个特点：(1)图像嵌入水印后具有较高的信噪比，适用于医学图像的认证；(2)结合小波系数的统计信息来选择嵌入水印的位置，保证了水印的易碎性；(3)小波分解在空频域的特性使得算法对篡改具有很强的定位能力；(4)利用密钥对算法进行保护，即使公开算法，也能抵挡恶意攻击。

Fast Fourior Transform plays an important roll in digital signal processing,its the kernel algorithm in a lot of process for signal processing.this paper first summarizes many algorithm for Fast Fourior Transform that in common use and synthesizes many reasons to adopt the radix-2 Demation-in-Frequency algorithm,then it compares two ways of implementing digital signal processing,the two ways are in field-programmable gata array and in programmable digital signal processor respectively.it points out the advantage and disadvantage of two ways.

快速傅立叶变换是数字信号处理中的重要内容之一，是很多信号处理过程中的核心算法。本文先总结了快速傅立叶变换的一些常用算法，并综合种种因素，采用了基2按频率抽取算法作为实现算法，然后将以现场可编程门阵列和以DSP处理器这两种实现数字信号处理的方式进行了比较，指出了各自的优点和不足之处。

A new crossover operator is proposed to keep goad genes and enhance the search performance. Local search mechanism is added into GA to find solutions for TA problems with a more rapid convergence speed. Simulated annealing is used to overcome the problem of local optimum. A heuristically greedy local search is also proposed to improve the search efficiency. The simulation results show that the improved algorithm can improve the search efficiency of GA.

构造了适合于目标分配问题的染色体；设计了搜索性能较好且能够保留优秀基因的交叉操作方法；将局部搜索机制引入标准遗传算法，提高了目标分配算法的收敛速度；把模拟退火算法引入局部搜索问题，在一定程度上避免了局部最优问题；将贪婪算法应用于局部搜索提高了最优分配方案的搜索效率。

The experiment results on 13 well-known benchmark problems show that the proposed algorithm is capable of improving the search performance significantly in convergent speed and precision with respect to four techniques representative of the state-of-the-art in constrained optimization such as evolutionary algorithm based on homomorphous maps, artificial immune response constrained evolutionary strategy, constraint handling differential evolution, and evolutionary strategies based on stochastic ranking.

对13个标准测试问题的测试结果表明：与动态惩罚函数的进化算法、人工免疫响应约束进化策略、可行性规则的差分进化算法以及采用随机排序的进化策略相比，新算法在收敛速度和求解精度上均具有一定的优势。关键词：人工智能；差分进化算法；约束优化；随机排序

With the guide of non-linear program theory, by using interpolative steps and inexact line search, an improved conjugate gradient method was found, by which the training rate of BP networks increases by tens or hundreds of times. Moreover, the improved method is effective to solve non-linear equations for which Newton's method does not converge owing to the problems of the quadratic derivative and inverse matrix.

通过大量的数值模拟试验发现，在非线性规划理论的指导下采用间插步骤和不精确的一维搜索技术改进的共轭梯度法，是基于梯度和共轭方向的连续搜索算法中最有效的算法，这种算法使BP网络的训练速度提高几十到几百倍，使BP网络的实际应用效果大为改善；而且这种算法对于用牛顿法由于求二阶导数和求逆矩阵等问题难于收敛的非线性方程组的求解也是很有效的。

In this paper, the generator model of constant transient voltage and the invariableness impedance model was used, and the saliency of generator is included; through the analysis of the characteristic of the network equation calculation in the transient stability analysis, a new node ordering algorithm is proposed. Better initial value can accelerate the convergence rate of the networking equations, reduce the number of iterations, thus to cut down the amount of calculating time.

本文首先建立了适合于暂态稳定分析的简单模型，其中发电机采用E_q恒定模型，考虑了发电机的暂态凸极效应，负荷采用恒定阻抗模型；研究了电力系统的暂态稳定分析方法，指出目前数值积分暂态稳定计算方法中存在的不足，主要是网络方程的求解速度过慢；分析了暂态稳定计算中网络方程的特点，将稀疏技术应用于网络方程的求解，提出了一种新的节点编号方法——最小度最小有源节点道路集算法，减少了网络方程的计算量；在进行交替迭代求解时，将预测算法应用于每一积分步网络方程功角和电压的初值估计当中，应用自回归算法和广义延拓算法，期望给出一个更有效的电压和功角初值方案，来加快方程的收敛过程，减少方程迭代的次数，以提高计算速度。

So, this paper mainly focuses on the search capacity of intelligent algorithms, to improve their convergence speed and solution quality, and avoid them trapping in local optima. We study methods to enhance the global serach ability of an algorithm from the algorithm searching mechanism and spatial structure, and at the same time consider its lobal search ability.

因此，本论文主要围绕智能优化算法的空间搜索能力，从算法搜索机制和搜索空间结构两个方面，研究增强算法的全局搜索能力的方法，同时兼顾局部寻优能力，以避免算法陷入局部最优，提高搜索性能。

This algorithm is designed in the style of tableau algorithms, which is usually used in classical description logics. The transformation rules and the process of this algorithm is described and optimized with three main techniques: recursive procedure call, branch cutting and introducing sets of mesne results.

该算法的设计参考用于经典描述逻辑的tableau算法；详细描述了EFALC的转化规则和推理算法的过程，并使用递归函数调用、分支裁减和引入中间结果集合这3种技术对算法进行优化。

On this basis, exploring the method and feasibility to extract terrestrial parameters from hyperspectral and multiangular data. On the inverse problem, we analyzed the error source of model-based inversion, and pointed out the effect of a priori information, merit function, inverse algorithm and strategy on the inverse result.

本文在综合考虑各种算法的优缺点基础上，将基于实编码的遗传算法引入遥感模型反演中，并通过与确定性搜索算法相比较，肯定了遗传算法在解决非线性反演问题中的作用。

Studies the high precision estimation methods of echo frequency, proposes a simplified TLS-ESPRIT method for frequency estimation based on uniform sampling data. For moving platform, such as torpedo, proposes a time fusion algorithm for target status estimation based on multicycle data of single sensor.

c。深入研究了回波信号的高精度频率估计技术，提出了一种基于均匀采样数据的TLS-ESPRIT频率估计算法；针对运动平台，提出了一种单传感器多测量周期目标状态估计的时间融合算法；以炸点预测为例构造了相应的状态模型及算法，计算机仿真验证了融合算法的有效性。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。