无构造的
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Chaper 3 is general description of ADA encryption. Chapter 4 deals with the transform domain encryption. Includes the element of perfect and quasi-perfect transform domain encryption, and presents two type new schemes. Chapter 5 deals with asynchronous ADA encryption. Extends the general theory and model of asynchronous ADA scrambling, and introduces two type phase-distortion-free a synchronous ADA schemes. Chapter 6 is about new direction of ADA encryption. Includes TASI scrambling, transform domain dummy insertion scrambling, noise coving scrambling and other multi-dimension ADA scrambling, and proposes an adaptive dummy spectrum insertion asynchronous scrambling and a new adaptive noise-coving DFT scrambling algorithm. Chapter 7 is on permutation key. presents part results on permutation features, selecting criterion and constructing method. Chapter 8 introduces the hard and software design of a common ADA encryption/decryption system, and presents the experimental results on several proposed ADA encryption schemes.
第一章为绪论;第二章为语声信号、及其处理基础;第三章为模数模加密的一般描述;第四章为变换域加密研究,包括变换域加密机理,变换域完善与准完善保密研究,提出两种新的变换域加密方案;第五章为异步模数模加密研究,扩充了异步模数模加密的一般理论,介绍了两种新的无相位失真异步加密方案的原理与实现方法;第六章对模数模加密新方向:TASI应用途径、变换域伪谱插空置乱、噪声掩盖、多维置乱加密的原理和方法进行介绍,提出了自适应伪频插空异步模数模置乱算法与自适应DFT系数噪声掩盖置乱新算法;第七章为置换密钥性质、筛选准则以及构造方法研究的部分结果;第八章介绍了通用模数模加/解密实验系统的硬件、软件研制概况,并给出了几种加密方法的实验结果。
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The selection of geological prospecting in different stages(initial-prospecting, detailed-prospecting)(2)the selection of geological prospecting in the deep-laid and shallow-laid of tunnel project (3)the selection of geological prospecting of tunnel projecting in different geological conditions Finally, the author summed up main problems needing to be solved in tunnel engineering geological prospecting as follow:(1)differentiate stratum and find out the depth and thickness of different stratums in the tunnel section (2)find out geological structure and existence situation of fault, broken zone and weak plane (3)find out weathering level of bed rock to classify surrounding rock combining speed materials (4)differentiate stratum structure of the entrance of tunnel to judge the stability of it (5)find out existence situation and performance of ground water (6)situations of other harmful geological phenomenon In view of above problems and classification of surrounding rock, the author showed principles of rational choosing of methods in geological prospecting and counted disperse range of physical character parameter value in different petrosal character, getting achievements as follow:(1)summarization of effect, merits and demerits of different geological prospecting methods in the tunnel geological investigation (2)method selection and arrangement principle of tunnel engineering geological prospecting in different geological conditions and prospecting stages (3)According to previous experience and cases, the author concluded the物性parameters most in use ,and showed the basis of selecting geological prospecting methods in different geological conditions.
论文中用几个应用实例来说明:(1)不同勘察阶段物探工作的选用;(2)深埋、浅埋隧道工程物探工作的选用;(3)不同地质条件隧道工程物探工作的选用。最后总结归纳出隧道工程物探所需要解决的问题主要有:(1)划分地层,查明隧道通过剖面的各地层深度与厚度。(2)查明地质构造,隧道轴线段有无断层、破碎带、软弱层面等。(3)查明基岩风化程度,从而结合速度资料进行围岩分级。(4)划分洞口地层结构,判断洞口稳定性。(5)查明地下水赋存情况及其活动动态。(6)其他不良地质现象存在情况。针对上述需要查明的地质问题与计算围岩分级情况,论文提出合理选用物探方法的原则,并统计了物性参数值在不同岩性中的分布范围。得出以下研究成果:(1)总结出各物探方法在隧道地质调查中的作用和优缺点。(2)得出不同地质条件下和不同勘察阶段,隧道工程物探方法选择和布置的原则。(3)根据以往工作经验和事例,对常用的物性参数进行了归纳总结,同时介绍了不同地质条件下物探方法选择的依据。
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Syntactical completeness is only concerned with syntactics. The classical proposition logic systems with the rule of substitution are syntactical complete, while the ones without the rule are not.
语法完全性仅与一个形式系统的语法构造相关,经典命题逻辑的有代入规则的系统是语法完全的,无代入规则的系统不是语法完全的。
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Syntactical completeness is only concerned with syntactics. The classical preposition logic systems with the rule of substitution are syntactically complete, while the ones without the rule are not.
语法完全性仅与一个形式系统的语法构造相关,经典命题逻辑的有代入规则的系统是语法完全的,无代入规则的系统不是语法完全的。
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In order to diagnose faults and to solve the physically unrealizable problems of the optimal fault-tolerant control law, a delay-free transformation approach was given for delayed measurements. The on-line fault diagnosis and the observation of system states were realized by constructing the reduced-order state observer for the augmented system comprising fault states.
为了进行故障诊断并解决最优控制的物理不可实现问题,给出了一种测量时滞的无时滞转换方法,并通过构造含有故障状态的增广系统的降维状态观测器,设计了在线诊断故障的故障诊断器并同时实现了系统状态的观测。
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At last, By using the factorization properties of cyclotomic polynmials on finite fields and the construction characteristic of cyclic codes, we present the relation of the period distribution of cyclic codes and the period distribution of their dual codes, establish the explicit formula for the number of the codewords without inner-period of the cyclic codes and their dual codes, find the method for computing the dimension and the period distribution of narrow-sense primitive BCH codes,and study the inverse question of period distribution of cyclic codes.
最后,利用有限域上分圆多项式的分解特性和循环码的构造特点,揭示了循环码的周期分布与其对偶码周期分布之间的内在联系,确定了一般循环码及其对偶码内无内周期码字的精确计数公式,决定了狭义本原BCH码的维数与周期分布,讨论了循环码周期分布的反问题。
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Z2Bn z$e0A0 Meshless method is a new numerical computation method that is developed rapidly in recent years. Without element mesh and based on the dispersed nodes to form approximate interpolative function dynamically, meshless method has distinct difference with traditional finite element method. Meshless method conquers the problems caused by mesh generation, mesh aberration and mesh move. With provides a new effective means to engineering problem, meshless method obtain highly recognition in international compute mechanics domain and engineering field.
6L!y6K1Q6h0k0 无网格方法是近年来迅速发展起来的一类新型数值计算方法,它们不借助单元网格而是基于离散结点动态构造近似插值函数,与传统的有限元方法有着显著的区别,克服了网格生成、网格畸变和网格移动引起的问题并为工程问题提供了一种新的有效分析方法,受到了国际计算力学界和工程界的高度重视。
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Elaborated the punching components formation principle, the basic dies structure and the rate process and the principle of design; and designed some conventional punching die:the die for big diameter three direction pipe which solved the problom of traditional machining,the drawing and punching compound die with float punch-matrix,the drawing and cutting compound dies with unaltered press,the compound die for the back bowl of the noise keeper,the design of the compound die which could produce two workpieces in one punching,the bending die for the ring shape part ,the bending die which used the gemel ,automate loading die for cutting, the drawing,punching and burring compound dies with sliding automated loading,the punching die for the long pipe with two row of hole,the drawing die for the square box shape workpiece and the burring die for the box shape workpiece.
原文对于寒冲压技术的合种、特征及开展圆背做砬简单概述;阐述了冲压整机的构成本理、基础模具构造与活动进程及其设计本理;对典范的冲压件模具进佳的了设计:大曲径三通管冲压复合模设计掀世了大直径三通管的减工困难、带无沉动凸凸模的拉伸冲孔复合模设计、适力压边式落料拉伸切边复合模设计、长音器后挖碗落料、拉深、冲孔、翻边复合模设计、一模二件落料拉伸冲孔翻边复合模设计、环形弯曲件的模具设计、铰链舒方成形工艺及模具设计、半自动送料切角安装设计、涩板式送料拉深、冲孔、翻边模设计完成自动送料、长管少孔冲模设计、带凸缘台阶方盒形整件拉深模战盒形件正壁小孔翻孔模。
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The basic principle is to use a series of rules with a high degree of adjustable basic body Based on the basic body of the real-time control, to construct the required shape forming face, replace the traditional mold of the plate to achieve rapid 3D-Forming.
其基本原理是利用一系列规则排列、高度可调的基本体,通过对各基本体的实时控制,构造出所需形状的成形面,取代传统的模具来实现板材的三维曲面快速无模成形。
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The landscape is otherworldly, from the ocean of blood red crests along Dune Alley at Sossusvlei (pronounced SOSS-oo-vlay) to the gravity-defying rock formations and petrified forest of Damaraland, in the country's center.
从沿着索苏维来中沙丘峡谷的血红色脊峰到不受万有引力控制的岩石构造以及位于这个国家中部的达马拉兰石化森林,这里的风景无一不是超凡脱俗的世外桃源。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。