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Using the concept of Boolean functions and combinatorics theory comprehensively, we investigate the construction on annihilators of Boolean functions and the algebraic immunity of symmetric Boolean functions in cryptography:Firstly, we introduce two methods of constructing the annihilators of Boolean functions, Construction I makes annihilators based on the minor term expression of Boolean function, meanwhile we get a way to judge whether a Boolean function has low degree annihilators by feature matrix. In Construction II, we use the subfunctions to construct annihilators, we also apply Construction II to LILI-128 and Toyocrypt, and the attacking complexity is reduced greatly. We study the algebraic immunitiy of (5,1,3,12) rotation symmetric staturated best functions and a type of constructed functions, then we prove that a new class of functions are invariants of algebraic attacks, and this property is generalized in the end.Secondly, we present a construction on symmetric annihilators of symmetric Boolean functions.

本文主要利用布尔函数的相关概念并结合组合论的相关知识，对密码学中布尔函数的零化子构造问题以及对称布尔函数代数免疫性进行了研究，主要包括以下两方面的内容：首先，给出两种布尔函数零化子的构造方法，构造Ⅰ利用布尔函数的小项表示构造零化子，得到求布尔函数f代数次数≤d的零化子的算法，同时得到通过布尔函数的特征矩阵判断零化子的存在性：构造Ⅱ利用布尔函数退化后的子函数构造零化子，将此构造方法应用于LILI-128，Toyocrypt等流密码体制中，使得攻击的复杂度大大降低；通过研究(5，1，3，12)旋转对称饱和最优函数的代数免疫和一类构造函数的代数免疫，证明了一类函数为代数攻击不变量，并对此性质作了进一步推广。

We introduce convex,and in particular semidefinite,optimization methods,duality and complexity theory to shed new light to this relation for the single stock problem, given moments of the prices of the underlying assets,we show that we can find best possible bounds on option prices with general payoff funcations efficiently,either algorithmically(solving a semidefinite optimization problem)or in closed form, conversely,given observable option prices,we provide best possible bounds on moments of the prices of the underlying assets,as well as on the prices of the other options on the same asset by sovling linear optimization problems for options that are affected by multiple stocks either directly(the payoff of the option depends on multiple stocks)or indirectly(we have information on correlations between stock prices),we find on-optimal bounds using convex optimization methods,however,we show that it is NP-hard to find best possible bounds in multiple dimensions,we extend our results to incorporate transactions costs,this paper,in theory and practice can provide a reference to researchers and designers about Chinese financial derivative products,the full text is divided into six chapters as follows: ChapterⅠ:Papers on the background and significance of the subjects on a number of option pricing models as well as their advantages and shortcomings of the model and describes the status of research and writing papers and the main contents of the basic idea.

相应地，给定期权价格，也能够出标的资产瞬时价格的最有可能的最好的界。还有通过解决一个线性最优化问题，根据同一标的资产的其他期权的价格来找到这个期权的界值，对于期权受到多种股票价格直接影响(期权的收益依赖于多种股票)或者间接影响(我们有股票之间联系的有用信息)，如果使用凸规划方法我们就会发现没有最优的界，也能够证明对于多维情形确实是很难找到最优的最有可能的界值，最后将这一结论推广到考虑交易成本的情况。本文在理论和实践上给我国金融衍生产品研究者和设计者提供一定的参考。全文共分为六章，具体安排如下：第一章：阐述论文的选题背景和意义，介绍期权定价的一些模型以及这些模型的优点与缺点，并介绍国内外研究的现状以及论文的写作基本思路与主要内容。

We are sensitive and ramstam and pretend to be tough.we hurt people at will and are being hurt easily. we pursue the decadent pleasure,indulge in the lonely beauty. we firmly believe that we are extraordinary and that we can change the world. however,we find that we are no longer young and our future is no more infinite.

我们敏感，我们偏执，我们顽固到底地故作坚强；我们轻易地伤害别人，也轻易地被别人所伤，我们追逐于颓废的快乐，陶醉于寂寞的美丽，我们坚信自己与众不同，坚信世界会因我而改变；我们觉醒其实我们已经不再年轻，我们前途或许也不再是无限的，其实它又何曾是无限的。

We are sensitive and ramstam and pretend to be tough.We hurt people at will and are being hurt easily.We pursue the decadent pleasure,indulge in the lonely beauty.We firmly believe that we are extraordinary and that we can change the world.However,we find that we are no longer young and our futrre is no more infinite.Actually it has ever never been infinite.

我们敏感，我们偏执，我们顽固到底地故作坚强；我们轻易的伤害别人，也轻易的被别人所伤，我们追逐于颓废的快乐，陶醉于寂寞的美丽；我们坚信自己与众不同，坚信世界会因我而改变；我们觉醒其实我们已经不再年轻，我们前途或许也不再是无限的，其实它又何曾是无限的？

We are sensitive and ramstam and pretend to be tough.We hurt people at will and are being hurt easily.We pursue the decadent pleasure,indulge in the lonely beauty.We firnly believe that we are extraordinary and that we can change the world.Howerer,we find that we are too longer young and our future is no more infinite.Actually,it has ever never been infinite.

我们敏感，我们偏执，我们顽固到底地故作将坚强，我们轻易地伤害别人，也轻易的被别人所伤，我们坚信自己与众不同，坚信世界会因我们而改变，我们觉醒其实我们已经不再年轻，我们前途也许不再是无限的，其是它又何曾是无限的？

Someday You gotta find another way You gotta right your mind and live by what you say Today Is just another day Let's set your sights and try to find our way I say fuck authority Silent majority Raised by the system Now it's time to rise against them We're sick of your treason Sick of your lies Fuck no, we won't listen We're gonna open your eyes Frustration Domination Feel the rage of a new generation We're living We're dying We're never gonna stop Stop trying You know You've got a right to take control You gotta take offense against the status quoue No way We're gonna stand for it today Fight for your rights It's time we had our say!

终有一天你干找到另一种方式你干你的正确心态和生活所你说今日只是另一天让你订得设法找出我们的方式我说他妈的管理局沉默的大多数所提系统现在的时间崛起对他们我们有病，你的叛逆有病你所在他妈的没有，我们不会听我们再拖打开你的眼睛沮丧统治感到愤怒新一代我们生活我们正在垂死我们永远不要再拖停止你知道你有权采取控制你干采取攻击地位quoue 没有办法我们再拖站在今天争取你的权利它的时候我们也曾经说！

We look at it, and we can not see it, so we name it 'the superorganic esse'. We listen to it, and we can not hear it, so we name it 'the soundless voice'. We try to grasp it, and can not get hold of it, so we name it 'the impalpable existence'.

看它看不见，叫做'夷'；听它却听不到，叫做'希'；摸它触不着，叫做'微'。

It seems that i can't force feeling as everything's dancing around a circle that i cannot see and all the times slipping away we try to remember the days gathering all of the pictures we took together and apart we will die as everything's dancing around just trying to stay on the ground i find myself reaching tog rab, you away feelings today, don't look away from me and holding our hands out we'll grow, everyday losing the way, no more alone we will stay as everything's dancing around a circle that i cannot see and all the times slipping away we try to remember the days gathering all of the pictures we took together and apart we will die as everythings dancing around just trying to stay on the ground.

我似乎无法强迫感吗像所有的舞蹈一个圆，使我不能看见和所有的时间正在流逝我们试图记住的日子一去不复返了收集所有的图片我们将一起，除了死像所有的舞蹈只想呆在地面上我发现自己要达到，你走吧。

In our media businesses, such as the Buffalo News, we sell advertising. In other businesses, such as See's, we are buyers. When we buy, we practice exactly what we preach when we sell. At See's, we more than tripled our expenditures on newspaper advertising last year, to the highest percentage of sales that I can remember. The payoff was terrific, and we thank both Hal Riney and the power of well-directed newspaper advertising for this result. See's splendid performances have become routine.

在我们的媒体事业，像是水牛城报纸，我们贩售广告，在其它的事业，像是喜斯糖果，我们是广告客户，反而变成买主，然而当我们买广告时，我们做事的方式跟我们当初在卖广告的诉求是一致的，去年喜斯糖果在报纸广告上的花费增加了有三倍之多，是我印象之中占营业额的最高比例，不过所得到的回报却更是惊人，对于能有这样的成绩，我们相当感谢 Hal Riney 与报纸的宣传效果。

Targeting the biomass rice stalk,we use linestone as catalyst and cracking catalyse the tar which was pyrolysised from the target.We build the rice straw biomass gasification tar removal catalytic cracking process model by the least squares support vector machine model and optimize the model parameters through genetic algorithm.We also has gotten the best catalytic cracking temperature and gas residence time, making the highest rate of catalytic cracking tar.We made wood biomass as a target analysis so that we can thermally crack tar,and we can use genetic algorithms to optimize the model parameters that is based on the wood biomass gasification pyrolysis tar removal process model through the least-squares fitting method,then we got the best pyrolysis temperature and equivalence ratio,so that it is possible to make the tar content reach the minianum.Based on the least squares support vector machine model,we had established the model of the biomass sawdust Compression molding process and fit the Optimization Parameters objective function of the molding process .

以生物质稻秆为对象，采用石灰石作为催化剂对稻秆热解焦油进行催化裂解，由最小二乘支持向量机模型建立了生物质稻秆气化焦油催化裂解脱除过程的模型，并用遗传算法对模型参数进行了优化，得到了最佳的催化裂解温度和气相停留时间，使得焦油催化裂解率达到最高；以生物质木屑作为分析对象，对其进行热裂解脱焦，并依据最小二乘曲线拟合方法建立了生物质木屑气化焦油热裂解脱除过程的模型，用遗传算法对模型参数进行了优化，得到了最佳的热裂解温度和当量比，使得焦油含量达到最小。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。