With the new concept,the problem of variable structure control of 2D discrete system is transferred to the problem of seeking a sliding model with good sporting character and attractability. The concrete design schemes of the imitative sliding model and variable structure controller are also put forward. And the concrete expression of the time T in ε-neighborhood of reaching switch manifold is obtained. The difficulty of applying the existing methods to MIMO systems is overcome.

在新概念之下国产,欧美性爱一区，將2D離散系統(tǒng)的變結(jié)構(gòu)控制問題轉(zhuǎn)化為尋找一個既具有良好的運(yùn)動品質(zhì)又具有吸引性的滑動模問題思思精品视频在线观看，給出了滑動模及變結(jié)構(gòu)控制器的設(shè)計(jì)方案日韩精品免费观看大全网站，并且獲得了達(dá)到切換流形的ε領(lǐng)域的時間T的具體表達(dá)式AAAA电影网，克服了已有方法難以應(yīng)用到多輸入—多輸出系統(tǒng)上的困難国产5加勒比区精品视频。

This problem is defined as: Given points X, Y on the elliptic curve, find z such that: X = zY The discrete logarithm problem over this group in a finite field is a good one way function because there are currently no known polynomial time attacks forsolving the problem.

這個問題是指：鑒于點(diǎn)X和Y的橢圓曲線婷婷亚洲色图日韩，找到這樣： X =模糊離散對數(shù)問題，這個集團(tuán)在有限的領(lǐng)域是一個很好的方法之一的功能欧美激情视频在线观看，因?yàn)槟壳皼]有任何已知的攻擊forsolving多項(xiàng)式時間的問題亚洲综合无码一区二区三区四区。

The discrete 0-1 programming problem is translated into continuous nonlinear optimization problem by polish function, and the nonlinear optimization problem is solved by contraction algorithm.

3利用過濾函數(shù)近似處理連續(xù)體拓?fù)鋬?yōu)化問題，使用縮并解法實(shí)現(xiàn)了對連續(xù)體拓?fù)鋬?yōu)化問題的求解天堂资源中文最新版。

In this algorithm, at first the reactive power optimization problem is converted to integer nonlinear programming problem with discrete control variables which are solved by IGA; then by use of PDIP algorithm, the continuous variables which can match with the obtained most are solved, and the reactive power optimization is changed into a nonlinear programming problem with continuous control variables.

首先通過改進(jìn)遺傳算法求解無功優(yōu)化問題中的離散變量三级片电影九九热操，然后采用原對偶內(nèi)點(diǎn)法求解與已獲得離散變量最匹配的連續(xù)變量欧美午夜A片一区二区。

The basic idea was to discrete the structure and find the load function according to the energy criterion of buckling and the principle of random displacement method. As the critical load is the minimum of the load function, a problem of frame buckling can be transformed into an optimization problem. Therefore, the critical load can be found through solving the optimization problem.

先將結(jié)構(gòu)離散為一個有限自由度系統(tǒng)；然后根據(jù)有限自由度系統(tǒng)平衡穩(wěn)定性的能量準(zhǔn)則和隨機(jī)位移法的基本原理日产顶级黄色片，建立符合能量準(zhǔn)則的載荷函數(shù)最新看片地址，該函數(shù)不為零的最小值即為臨界載荷，由此將穩(wěn)定問題轉(zhuǎn)化為無約束的多維優(yōu)化問題免费在线黄色视频网.AAA...；最后應(yīng)用遺傳算法求出相應(yīng)于最優(yōu)解的目標(biāo)函數(shù)值网友自拍日韩视频在线观看免费。

Von Neumann proposed that a problem be broken into discrete logical steps, much like the steps in a long division problem, and that intermediate values in the task be stored temporarily in the computer in such a way that those values could be considered input for the next portion of the problem.

馮諾依曼建議，將問題分解為分立的合乎邏輯的階段午夜影院妓女性爱视频，很像一個長期分離的問題国产美女在线精品网站，把工作中的中間值臨時儲存在計(jì)算機(jī)中，這樣一來精品熟女碰碰人人A久久，那些數(shù)值可以被看成是為下一部分問題輸入的數(shù)據(jù)操国产熟女。

Insection 4.3, semi-discrete and fully discrete Fourier spectral and pseudo-spectral schemes are constructed. The convergence and stability for the schemes are proved, and the error estimates are obtained.Chapter 5, consider the damped coupled generalized nonlinear wave equations. In section 5.2, by coupled a priori estimates and Galerkin method, prove the existence and uniqueness of the global smooth solution for the periodic initial value problem and obtain the existence of global attractors.

第四章，考慮一類具耗散的廣義KdV方程組的周期初值問題国产高清美女一级a毛片久久，在第二節(jié)中證明了整體光滑解的存在性和唯一性欧美XX网，得到整體吸引子；在第三節(jié)中構(gòu)造了半離散和全離散的Fourier譜格式和擬譜格式A片区视频播放，在整體光滑解存在的條件下大色佬色色插入，證明了這些格式解的收斂性，并得到了誤差估計(jì)亚洲欧美在线观看hh。

The numerical results show that our method is effective. For the noncharacteristic Cauchy problem for 2-D and 3-D heat equation, we give the explicit H\"{o}lder type stability estimates by using weighted energy method. Especially,H\"{o}lder type stability estimate for discrete solutions of the heat equation is obtained through a fully discrete method. The numerical results are presented.

對于二維和三維的熱傳導(dǎo)方程的非特征Cauchy 問題精品久久人人摸，我們利用權(quán)函數(shù)方法，給出了一個顯式的H\&{o}lder 型的穩(wěn)定性估計(jì)影音先锋在线观看日韩AV，特別的日韩天天天添日日，對于二維的非特征Cauchy問題，我們利用充分離散的方法人人操操BB，對二維問題的離散形式同樣給出了H\&{o}lder 型的穩(wěn)定性估計(jì)性爱欧美一区二区，同時，我們也給出了數(shù)值例子來說明我們的估計(jì)黄色视频在线观看免费最肉最A。

Otherwise, the algorithm restores the domain of variables that were eliminated due to the instantiation of current variable, and backtracks sequently. This thesis gives design for "Ming Yue "[1.1], and briefly states impleme -nt of problem solving system on discrete domains combined with examples. It also gives some experiment results of typical problems, such as car sequencing, timetabling problem, job shop scheduling problem and so on.

本文給出了&明月&的設(shè)計(jì)亚洲秋霞三区色电影，并且結(jié)合實(shí)例簡述了離散論域上約束求解系統(tǒng)的實(shí)現(xiàn)，給出了一些典型問題的實(shí)驗(yàn)結(jié)果偷拍片第一页，如汽車排序操死你亚州三级、時間表調(diào)度問題、車間作業(yè)調(diào)度問題等可以免费看的AV网站，實(shí)驗(yàn)證明該系統(tǒng)對于某些類問題的確是行之有效的精品三级在线视频。

The new calculation method of structural surfaces with different scales is given on the basis of block discrete element method in which contacts face to face. Moreover, a new discrete element model for simulating rock and soil blasting problem is built. The elements of new model can be split by itself in the program. There are small scale blocks around the charge, and large scale blocks are adopted in far zone.

在塊體離散元面－面接觸的基礎(chǔ)上，給出不同尺度結(jié)構(gòu)面的計(jì)算方法，建立離散元對巖土爆破模擬的計(jì)算模型亚洲三级片免费观看视频，實(shí)現(xiàn)塊體白分裂計(jì)算程序国产精品色哟，在藥包附近采用小尺度塊體，遠(yuǎn)區(qū)采用大尺度塊體清纯唯美亚洲色图，可以更為準(zhǔn)確地描述爆破載荷下巖體結(jié)構(gòu)面的尺寸效應(yīng)特级毛片A片全部兔。