基于免疫遗传算法的机械手避碰逆解

给出了核反应堆检修用冗余机械手的无碰撞运动学求解方法。提出了一种基于免疫遗传算法的逆解方法,在保证解的精确性的同时对解进行了合理优化,使得求解过程快速准确。同时在求解的过程中利用罚函数法,对逆解过程进行避碰优化,使得基于该逆解方法的机械手运动控制更具灵活性。针对具体问题,提出了一种免疫遗传算法,对算法的快速性作出了考虑,满足了求解的实时性要求。     

Characteristic polynomial assignment in F-M model Ⅱ of 2-D systems

The problems of characteristic polynomial assignment in Fornasini-Marchesini (F-M) model Ⅱ of 2-D systems are investigated. The corresponding closed-loop systems described by F-M model Ⅱ are obtained via the state feedback.Using the algebraic geometry method, the characteristic polynomial assignment in the closed-loop systems is discussed. In terms of the theory of algebraic geometry, the problem of characteristic polynomial assignment is transferred to the one whether a rational mapping is onto. Sufficient conditions for almost arbitrary assignment coefficients of characteristic polynomial in F-M model Ⅱ of 2-D systems via state feedback are derived, and they are available for multi-input cases. It also has been shown that this method can be applied to assign the characteristic polynomial with output feedback. The sufficient conditions for almost arbitrary assignment coefficients of characteristic polynomial of multi-input 2-D systems described by F-M model Ⅱ with output feedback are established.     

基于代数杂交算子的变异算子机理分析

利用布尔代数的理想将遗传算法 (GAs)中的个体空间进行等价分类后 ,本文利用代数杂交算子 ,对变异算子的运行机理进行了分析 ,并得出了若干结果。作为其应用 ,分析了遗传算法的过早收敛现象     

一类特殊的随机系数代数方程实根的平均数

本文对于随机系数代数方程ｔｎ＋ｐ（ｗ）ｔｋ＋ｑ（ｗ）＝０，这里ｎ、ｋ是奇自然数，ｎ＞ｋ，Ｐ（ｗ）、ｑ（ｗ）为两个独立的随机变量，且都服从区间［０，１］上的均匀分布。给出了它的平均实根个数ＥＮ（ｗ）的代数表达式。     

LBlock分组密码代数旁路攻击

对轻型分组密码LBlock抗代数旁路攻击安全性进行了评估.给出了LBlock密码算法的代数方程表示方法,使用示波器采集微控制器ATMEGA324P上的LBlock实现功耗泄露,利用泊松相关系数方法推断加密中间状态汉明重,基于可满足性问题并转化为代数方程组,同LBlock密码算法代数方程联立,最后使用CryptoMinisat解析器进行方程组求解,成功恢复加密密钥.实验结果表明:微控制器上的LBlock实现易遭受代数旁路攻击,仅需一条功耗曲线,已知明密文下的3轮汉明重泄露、未知明密文条件下6轮汉明重泄露分别经2.4s和0.4s分析即可恢复80 bic完整密钥.     

含有两个基本圈的简单图的N-G型代数连通度的界

对任一个n阶简单图G,用a（G）表示G的代数连通度.在已有文献研究的基础上,通过分类研究和个别图具体研究,证明了对任一含有两个基本圈的简单图G,有1≤a（G）＋a（Gc）.     

一类图色等价的充分必要条件(英文)

给出了两个伴随最小实根不小于-4的图伴随等价的一个充分必要条件.据此,也给出了这些图的补图色等价的一个充分必要条件.     

A Research on Translation of Verbal Humor from the Perspective of Functional Equivalence——A Case Study of Brothers

As the unique heritage of culture,humor has its own characteristics.Whether the translation of verbal humor can convey the original culture accurately is vital.In this thesis,the author will make a study on the translation of verbal humor in Yu Hua 's novel Brothers from the perspective of Functional Equivalence Theory,which examines whether the translation version reproduces the style of the original text accurately and adequately.     

四维齐次线性滞后型微分方程点态退化的充分条件

本文给出了四维齐次线性滞后型微分方程点态退化的充分条件的代数判定,它直接通过方程组的系数来麦示,比前人的有关结果更便于应用。