在实际问题中常遇到这样的函数 y=f(x),其在某个区间[a,b]上 是存在的。但是,通过观察或测量或 试验只能得到在[a,b区间上有限个 离散点o,x1,∵,n上的函数值

本文提出了一种新的分类算法,该算法特别适用于分类元素关键字值重复性较高的元素集。新算法采用了我们称之为单指针队列移动的思想,通过扫描全部元素一遍或二遍便将其分类完。当对关键字值仅有M种的共N个元素分类时,新算法的排序效率,即总的比较次数为O（N LOG2M）,元素总移动次数为O（MN）,所需附加空间为M个指针单元和M个存关键字值单元。在极端情况下,即M与N相等时,以上时空效率的形式不改变。约定:若元素a和b具有相同的关键字值,则称元素a和b是同类元素。反之,亦然

Iterating Block ciphers Definition A product cipher combines two or more transformations in a manner intending that the resulting cipher is more secure than the individual components. Definition An iterated block cipher is a block cipher involving the sequential repetition of an internal function called a round function. Parameters include the number of rounds Nr, the block bitsize n, and the bitsize k of the input key K from which Nr subkeys Ki (round keys) are derived. For invertibility (allowing unique decryption), for each value Ki the round function is a bijection on the round input

一、参考文献的类型 参考文献（即引文出处）的类型以单字母方式标识，具体如下：M——专著 C——论文集 N——报纸文章 J——期刊文章D——学位论文 R——报告 S——标准 P——专利A——文章

Using sand moulds for step-shape casting tests and different silicon percentage of nodular cast iron it was possible to separate structural variations produced during freezing from those occurring at Ac1 transformation temperature. The results show that an increase in silicon content leading to different variation in the matrix structure> leads to a changing mechanical properties of nodular cast irons. Tensile strength and elongation of obtained as-cast nodular cast iron with the composition of 3.9%C, 3.2%Si, 0.5%Mn are maximum of about 524.5N/mm2 and 19.8% accordingly. In the same nodular cast iron, but only with 0.1% Mn the silicon addition first increases after decreases elongation, impact toughness and hardness. But tensile strength changes to the opposite side

研究了传感器敏感元件的高磁致伸缩Fe基、零磁致伸缩Co基非晶带和非晶丝的微压力探测性能、磁场与位移探测性能、Wiegand型尖锐脉冲电压性能。Fe基非晶带环形铁芯具有良好的线性度,灵敏度高达2.7V/N。Co基非晶带磁场及位移探测元件灵敏度为14mV/A·m-1,位移探测灵敏度达30mV/mm,线性探测范围达100mm左右

通过LF精炼生产A36和45A钢,分析了精炼碱度(R)和(FeO+MnO)含量对脱氧的影响,以及精炼碱度(R)和(FeO)含量对脱硫的影响,研究得到脱硫率分别为61.3%和64.3%.同时,对精炼过程中[P]、[H]、[N]含量的变化规律进行了分析,结果表明金相夹杂物去除率平均值为70.27%,最高值为85.62%

• 自底向上分析概览 • Yacc: LALR(1)分析程序的生成器 • LR(0)项的有穷自动机及L R ( 0 )分析 • 使用Ya c c生成T I N Y分析程序 • SLR(1)分析 • 自底向上分析程序中的错误校正 • 一般的L R ( 1 )和L A L R ( 1 )分析

1. Input-output economics, the foundation of CGE & GSC (a) the input-output table (b) national accounts (c) the one-country input-output model (d) the Leontief paradox (e) effective rates of protection (e) the multi-regional or multi-national I-O model - starting point for CSC analysis 2. CGE modelling (a) Johansen’s model of Norway (b) Johansen’s solution matrix versus Leontief’s inverse (c) trade in a CGE model, Armington to Melitz 3. Applying existing CGE models to supply chain issues (a) Walmsley & Minor on reversing NAFTA (b) Dixon, Rimmer and Waschik on Buy-America(n) 4. Towards a CGE model with supply chain features: designs, components, assembly and sales 5. Concluding remarks

12.2 正交编码 12.2.1 正交编码的基本概念 12.2.2 阿达玛矩阵 12.2.3 沃尔什函数和沃尔什矩阵 12.3 伪随机序列 12.3.1 基本概念 12.3.2 m序列 【定理12.1】 【定理12.2】一个n级线性反馈移存器之相继状态具有周期性， 【定理12.3】若序列A = { ak }具有最长周期(p = 2n (x)产生的输出序列。而且，由定理12.2可知， 【定理12.4】一个n级移存器的特征多项式f (x)若为既约的， 由定理12.1可知，h(x)的次数比f (x)的低，而且现已假定f (x) 由定理12.4可以简单写出一个线性反馈移存器能产生m 现在我们讨论m序列的自相关函数。由12.2节互相关系数定 12.3.3 其他伪随机序列简介 12.4扩展频谱通信 12.5伪随机序列的其他应用 12.6 小结