difference n. 1.差异,差别。 2.不和,争论。 3.【数学】差,差额。 4.【逻辑学】特殊性。 There is no difference between them. 两者毫无差别。 the difference of jetsam from flotsam 弃货不同于浮货。 What difference can it make 不是一样吗? He is an artist with a difference. 他是别具风格的艺术家。 distinction without difference 无聊的区别。 make a difference 发生差别;使…有差别;(结果等)是重要的,有关系[影响] (One false step will make a great difference. 失之毫厘,谬以千里。 Don't let it make any difference. 没关系。 make a difference between A and B 使甲乙有别,对甲乙不一样)。 pay [meet] the difference 付差额金。 seek common ground while reserving differences 求同存异。 settle differences 调停。 split the difference 1. 折中,妥协。 2. 均分剩下的东西。 vt. 〔罕用语〕区别,使有差别。
matrix n. (pl. matrices 或matrixes) 1.【解剖学】子宫;母体;发源地,策源地,摇篮;【生物学】衬质细胞;间质;基质;母质。 2. 【矿物】母岩;脉石;【冶金】基体;【地质学;地理学】脉石;填质;杂矿石。 3. 【印刷】字模;型版,纸型;铸型,阴模。 4.【阵】(矩)阵,方阵;母式;【物理学】间架;【无线电】矩阵变换电路。 5.【染】原色〔红黄蓝白黑五种〕。 the matrix of a nail 【解剖学】指甲床。
The construction methods of ooc are summarized . furthermore , the algorithm based on difference matrix together with the algorithm based on extended set are investigated , then , these are corrected as for existing problem 对光正交码的构造方法进行了概述,研究了利用差分矩阵构造光正交码的算法和利用邻加方法构造光正交码的算法,针对这些算法存在的问题进行了修正。
A general method for constructing orthogonal arrays based on normal mixed difference matrix is presented . and some new orthogonal arrays are obtained . the remaining item of orthogonal decompositions of a projection matrix i ?通过对投影矩阵正交分解的余项进行分析,提出了满意正交表的概念,给出了满意正交表的一种判别方法,也就是找到了判定一个正交表不能添加新列的充要条件
In spatial domain , according to the characteristics of hvs ( human visual system ) , we introduce several approachs based on images " deviation , images " flatness measurement , fuzzy classification , and an approach based on difference matrix as well 在空间域内,利用人的视觉特性,我们提出了基于图象方差、图象平坦测度、模糊分类的隐藏算法,同时提出了基于差值矩阵的信息隐藏。
By applying the generalized hadamard product and difference matrix to orthogonal decomposition of projection matrices , further results on the orthogonal arrays obtained by the generalized hadamard product are presented . several classes of orthogonal arrays having more columns than the existing arrays are obtained ?把正交表的广义hadamard积和用差集矩阵构造混合水平正交表的方法联合起来应用到投影矩阵的正交分解中,使得所构造的正交表具有更多的列。
By using the theory of finite fields , the relationship of module operation among difference matrices of a mixed difference matrix is generalized to that of group homomorphism . a new concept of normal mixed difference matrix is proposed . the relationship between normal mixed difference matrix and the construction of orthogonal arrays is discovered ?利用有限域理论,把不同水平差集矩阵之间的取模运算关系推广为更加广泛的群同态关系,提出了标准混合差集矩阵的概念,找到了标准混合差集矩阵和混合水西安电子科技大学博士学位论文:正交表的构造方法及其应用平正交表的构造之间的关系,提出了利用标准混合差集矩阵构造正交表的方法且构造了一些新的正交表
In the frequency domain , we analyse the information hiding technique based on dct . we present improved adaptive hiding method , odd even embedding technique , improved amalgamation and difference matrix hiding method in the dct domain . we describe the process of information embedding and extraction , and analyse the robust of the algorithms above in detail 在频率域内,我们研究了基于dct变换的信息隐藏技术,提出了改进的dct自适应隐藏算法、 dct域奇偶性嵌入算法和改进的融合算法,同时提出了差值矩阵的dct域隐藏算法,给出了这些算法的信息嵌入与恢复过程,并对频率域内的这些隐藏算法的鲁棒性进行了分析。
By using matrix theory and the theory of finite fields , we study the applications of projection matrix , permutation matrix , difference matrix , hadamard product , the generalized hadarnard product , kronecker product , kronecker sum and the generalized kronecker sum to construction of orthogonal arrays 本文利用矩阵理论和有限域理论,研究了投影矩阵、置换矩阵、差集矩阵、 hadamard积、广义的hadamard积、 kronecker积, kronecker和、广义的kronecker和在构造正交表方面的应用。
In frequency domain , we research dct based information hiding techniques , and then give an adaptive technique , and a parity based approach in the dct domain , and an approach based on improved integration algorithm . we also propose an approach based on difference matrix in dct domain , and show all the approaches to embed / detect the secret messages , and their robust analysises 在频率域内,研究了基于dct变换的信息隐藏技术,提出了改进的dct自适应隐藏算法、 dct域奇偶性嵌入方法和改进的融合算法,同时提出了差值矩阵的dct域的隐藏算法,给出了这些算法的信息嵌入与恢复过程,并对频率域内的这些隐藏算法的鲁棒性进行了分析。
According to the feature of the human vision , we present the hiding methods based on image variance , image flatness measurement and fuzzy classification , respectively . and the techniques based on relationship between pixels , difference matrix and cryptography are also given . two hiding methods , backup hiding and camouflage hiding , are proposed too 在空间域内,利用人的视觉特性,本文提出了基于图象方差、图象平坦测度和基于模糊分类的隐藏算法,同时提出了基于关系、基于差值矩阵和基于密码算法的隐藏方法,并提出了备份隐藏和伪装隐藏两种隐藏方案。