应变量

The variable function here must be the same as the function you are sending in the contents.

该变量函数的应是作为函数您在发送的内容相同。

The maximum principle and the feedback control law are obtained.

通过系统地应用法锥性质和变分原理，获得了外界对种群的影响率为控制变量的最优控制的极大值原理。

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。

This paper studied the earnings managements of the listed companies by dividing the accrual into above-the-line accruals and below-the-line accruals. And for above-the-line accruals and below-the-line accruals of 2002, I divided above-the-line-accruals into working capital accruals and nonworking capital accruals. Then I used modified Jones model by adding industry variables to study the new characteristics of earnings management in 2002. This paper provides evidence that the listed companies still used below-the-line accruals as the main earnings management instrument. On the other hand the listed companies also used working capital accruals as one of their earnings management instruments. On the basis of the studies above, I build two proxies of the earnings management.

本文首先通过对2002年上市公司盈余管理的分项实证研究来观察各种制度实施后上市公司利用线下项目进行盈余管理是否得到了一定的遏制，实证过程中采用修正的横截面JONES模型加入行业变量并经过适当变形对上市公司年报线上项目和线下项目，并进一步将线上项目分解出营运资金相关项目和非相关项目两项进行盈余管理的实证研究，发现企业对线下项目的操纵仍然在企业盈余管理中占据主要地位，但从某种程度上看，线下利润的操纵得到了一定的抑制，另外企业对营运资金应计项目的盈余管理也是显著的。

The third chapter is about the optimal control for a class of age-dependent competitive population dynamics with diffusion, the continuity properties of the system solution in terms of the control variable is certificated, the Normal cone theory is applied and the necessary conditions of optimal control problem is obtained.

第三章研究了一类年龄相关的具有空间扩散的竞争种群系统最优控制问题，证明了最优解关于控制变量的连续依赖性，应用法锥理论，得到了最优解的必要条件。

Population and sample, data collection and the election of variables and properly understanding of simple hypothesis, etc.

本章对实证会计研究中的总体与样本，数据的收集与变量的选取，使用简单原假设应注意的问题等，都从统计学的角度作了较深入的阐述，其中有些新意。

A thread state variable corresponding to the dependency is used to indicate that the thread is in inactive mode.

与该相关性相对应的线程状态变量被用于指示该线程处于不活动模式。

Procedure should be placed between the variable declaration and program body.

过程应放在变量说明及程序本体之间。

Based on the propagation algorithm of signal probability,the decomposition algorithm of a multi-input XOR/AND gate,and the multiple segment algorithm of polarity conversion,this paper successfully applies the whole annealing genetic algorithm to find the best polarity of an RM circuit.

徐建 宁波大学电路与系统研究所，宁波 315211针对n变量逻辑函数在不同极性下所对应REED-MULLER 电路功耗和面积不同的特点，对信号几率传递算法、多输入XOR/AND门的低功耗分解算法和多成份极性转换算法进行了深入研究，成功地将整体退火遗传算法(whole annealing genetic algorithm，WAGA)应用于RM电路最佳极性的搜索。

Methods: Between April and November, 2004, we carried out a cross-sectional study that administerd a self-assessed health questionnaire survey to the parents of 1,117 children from 14 elementary and junior high schools with high tension power lines hovering over the campuses. The control group was consisted of 2,204 children from 18 control schools. Multivariate multinominal logistic regression model was used to calculate the age and socioeconomic indicators adjusted odds ratios and the corresponding confidence intervals of clinical visits and health conditions within a one- month period prior to questionnaire survey in relation to the putatively hazardous exposure to magnetic fields.

本研究利用横断性研究设计，在2004年4月至11月期间，针对台北县市14所校园上空有高压输电线跨越之国民中小学学童1，117名以及18所校园上空无高压输电线跨越之国民中小学学童2，204名的家长进行过去一个月以来，对学童健康情形之自我评量问卷；并利用多变量多名义逻辑斯迥归模式调整年龄与社经指标后，计算胜算比及其相对应之信赖区间，用以估计暴露组学童过去一个月内生病与就医症状的相对危险性。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失