查询词典 algorithm theory

Simulation result shows that, compared to the two methods based on minimax theory and stein unbias similar estimate theory respectively, the SNR of the pulsar signal of the proposed algorithm is increased by 5 to 6 dB while keeping the details of it.

实验结果表明，与基于极大极小原理和Stein无偏似然原理的降噪方法相比，基于模糊阈值的小波降噪算法将脉冲信号的信噪比提高了大约5~6dB，同时可以保留信号的细节。

For preparing for the researches of text digital watermarking and advantaging other researchers" development when using the Chinese mathematical expression theory, this paper designs and realizes a development platform of Chinese mathematical expression. It has been proved by experiments that the platform"s function, execution speed and stability can satisfy the requirements of conversion and operation of enormous data.This research found out that the structure information of Chinese have plenty redundant information that can be used by the Chinese mathematical expression for the digital watermarking, the data embedded can possess better robustness. Based on this finding, this paper designs a kind of text digital watermarking method of embedding watermarking by using Chinese structure, and realizes the method by using the Chinese mathematical expression platform.Considering the watermarking embedding algorithms importance to the robustness of the text digital watermarking, this paper makes fully use of the advantage of the Chinese mathematical expression theory to design a kind of layered text method, which has being realized by using the Chinese mathematical expression platform. The layered text method can handle the text as a solid structure, and the embedding data havepreferable robustness.Finally, based on the researches of the text digital watermarking method and the text layered method, this paper integrates the method of making use of the Chinese structure embedding watermarking with the robust algorithm based on text layered, and realizes a brand-new text digital watermarking method. Proved by lots of experiments, this brand-new method has good robustness and better invisibility.

为了为研究工作做准备和方便其他使用汉字数学表达式理论体系的人进行开发，本文基于汉字数学表达式理论设计实现了一个汉字数学表达式平台，实现了Unicode汉字集中的汉字、汉字数学表达式、汉字的Unicode码之间的相互转化、依据汉字数学表达式提取汉字的结构信息、由汉字数学表达式在非中文平台上不依赖字库显示汉字的图像等功能，使用复合文档技术和流压缩技术进行数据的存储，使用对汉字数学表达式进行二叉树拆分来处理汉字数学表达式中包含的信息，使用自定义哈希函数来提高运行速度，实验证明，该平台功能、速度和稳定性完全能满足大量数据的转化和运算要求；通过研究表明汉字的结构信息中存在大量可使用汉字数学表达式理论加以利用的水印加载空间，加载在该空间的数据可以具有较好的鲁棒性，基于此，本文设计了一种利用汉字结构加载水印的文本数字水印方法，并使用汉字数学表达式平台将其实现；由于水印嵌入算法对于文本数字水印的鲁棒性至关重要，本文充分利用汉字数学表达式理论的优点，设计了一种文本分层的方法，并使用汉字数学表达式平台将其实现，使文本成为一个立体的空间，使嵌入在其中的数据具有更好的鲁棒性；最后在基于汉字数学表达式的文本数字水印嵌入方法的研究和基于汉字数学表达式的文本分层方法的研究的基础上，结合利用汉字结构嵌入水印的方法和基于文本分层的抗攻击文本水印嵌入算法实现了一种全新的文本数字水印方法，经实验证明，该方法有良好的鲁棒性和较好的隐蔽性。

An algorithm of infrared small targets and decoys recognition based on fuzzy theory and D-S evidence theory .

一种基于模糊理论与 D-S 证据理论的红外小目标与诱饵识别算法。

This thesis analyzes the stability of the proposed algorithm and educes the scope of main parameters in theory, and then the control quality can be guaranteed in theory, which provides a new approach for TCP flow rate control.

本文从理论上分析了该算法的稳定性，导出了算法中主要参数的取值范围，从而从理论上保证了控制的品质，并为TCP的流量控制提供了一种新思路。

The basic theory of remote watching system for an unmanned substation is introduced. The necessity of image compaction in dada transmission, the theory of 2?dimension wavelet transform, and Mallat algorithm are also explained. Based on that, the method for reconstituting the site image with the original picture and the effective area,which is compacted by the wavelet transform and transmitted to dispatch center, is analyzed.

介绍了无人值守变电站遥视系统的基本组成原理，阐明了压缩传输图像的必要性，论述了二维小波变换的原理与Mallat算法，在此基础上，着重分析了利用二维小波变换压缩传递图像的有效区域并传至调度中心与底图重构出现场实况的方法。

A module of target recognition is set up and algorithm of data pretreatment and target recognition is discussed in detail. The detailed content is as follows.Firstly, this paper introduces the theory and output signal expression of a passive millimeter wave detector, based on the theory of an AC all-power radiometer.

全文的内容如下：首先，结合交流全功率辐射计的工作原理介绍了被动毫米波探测器的工作原理及输出信号表达式，并推导建立了探测器输出信号的数学理论模型，用计算机进行了波形模拟。

Product color intelligent design and optimization techniques based on genetic andimmunity theory This paper introduces genetic and immunity theory into PCID study, establishes a genecoding principle based on product subassembly, constructs a fitness function of colorschemes according to SCCA model, applies genetic and immunity algorithm to simulate theradiation and convergence process of MT, at last it builds a product color design model.Experiments prove that this method can design and optimize color schemes on its own.

5基于遗传与免疫理论的产品色彩方案生成与优化技术把基因遗传和生物免疫理论引入产品色彩智能设计中，提出以产品组件为基本进化单元的基因编码方法，根据形色耦合美度模型构造了色彩方案适应度函数，综合应用遗传算法与免疫算法模拟色彩设计复合思维的发散和聚敛过程并构建了色彩创新模型，算例表明该模型能解决产品色彩方案的自动生成与优化问题。

In this thesis this author mainly studies the theory and methods of ship wave-making resistance. Detailed analyses of New Slender-Ship Theory are made and corresponding calculation methods are presented . This thesis aims at finding an algorithm of wave-making resistance calculation suitable for various kinds of ships.

论文工作是研究船舶兴波阻力理论与方法，对新细长船理论进行了较详细的分析，对其具体的计算方法做了深入的研究，目的是探讨可适用于多种船型的有效的兴波阻力算法。

An improved algorithm was provided based on three kinds of techniques: dyadic wavelet, scale tracking theory and modulus maximum theory.

该文首先介绍了二进小波和奇异性指数，并阐述了尺度跟踪和模极大值重构等理论，在Mallat工作的基础上，提出了一种基于小波滤波的音频降噪方法。

In this paper, the basic mathematical model was derived by means of two methods, the first is the twostar positioning algorithm in celestial navigation theory and the second is based on the gyro dynamics theory. The results from these two methods are identical and therefore are correct. The latitude is equal to the elevation-angle of the polar gyro. The course is the ideal output from the sensor fitted to the outer gimbal. The longitude is a function of the equator gyro's azimuth and elevation angles.

本论文用天文导航中的双星定位法和经典的陀螺力学原理两种方法建立了ESGM的基本数学模型，并且得到一致的结果，说明所建模型是正确的，即载体的纬度等于极轴陀螺主轴相对水平面的高度角，载体的航向等于极轴陀螺外环轴上角度传感器的理想输出，载体的经度是赤道陀螺的方位角和高度角的函数。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。