difference n. 1.差異,差別。 2.不和,爭論。 3.【數(shù)學】差,差額。 4.【邏輯學】特殊性。 There is no difference between them. 兩者毫無差別。 the difference of jetsam from flotsam 棄貨不同于浮貨。 What difference can it make 不是一樣嗎? He is an artist with a difference. 他是別具風格的藝術(shù)家。 distinction without difference 無聊的區(qū)別。 make a difference 發(fā)生差別;使…有差別;(結(jié)果等)是重要的,有關(guān)系[影響] (One false step will make a great difference. 失之毫厘,謬以千里。 Don't let it make any difference. 沒關(guān)系。 make a difference between A and B 使甲乙有別,對甲乙不一樣)。 pay [meet] the difference 付差額金。 seek common ground while reserving differences 求同存異。 settle differences 調(diào)停。 split the difference 1. 折中,妥協(xié)。 2. 均分剩下的東西。 vt. 〔罕用語〕區(qū)別,使有差別。
matrix n. (pl. matrices 或matrixes) 1.【解剖學】子宮;母體;發(fā)源地,策源地,搖籃;【生物學】襯質(zhì)細胞;間質(zhì);基質(zhì);母質(zhì)。 2. 【礦物】母巖;脈石;【冶金】基體;【地質(zhì)學;地理學】脈石;填質(zhì);雜礦石。 3. 【印刷】字模;型版,紙型;鑄型,陰模。 4.【陣】(矩)陣,方陣;母式;【物理學】間架;【無線電】矩陣變換電路。 5.【染】原色〔紅黃藍白黑五種〕。 the matrix of a nail 【解剖學】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 對光正交碼的構(gòu)造方法進行了概述,研究了利用差分矩陣構(gòu)造光正交碼的算法和利用鄰加方法構(gòu)造光正交碼的算法,針對這些算法存在的問題進行了修正。
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 ?通過對投影矩陣正交分解的余項進行分析,提出了滿意正交表的概念,給出了滿意正交表的一種判別方法,也就是找到了判定一個正交表不能添加新列的充要條件
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 在空間域內(nèi),利用人的視覺特性,我們提出了基于圖象方差、圖象平坦測度、模糊分類的隱藏算法,同時提出了基于差值矩陣的信息隱藏。
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 ?把正交表的廣義hadamard積和用差集矩陣構(gòu)造混合水平正交表的方法聯(lián)合起來應(yīng)用到投影矩陣的正交分解中,使得所構(gòu)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 ?利用有限域理論,把不同水平差集矩陣之間的取模運算關(guān)系推廣為更加廣泛的群同態(tài)關(guān)系,提出了標準混合差集矩陣的概念,找到了標準混合差集矩陣和混合水西安電子科技大學博士學位論文:正交表的構(gòu)造方法及其應(yīng)用平正交表的構(gòu)造之間的關(guān)系,提出了利用標準混合差集矩陣構(gòu)造正交表的方法且構(gòu)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 在頻率域內(nèi),我們研究了基于dct變換的信息隱藏技術(shù),提出了改進的dct自適應(yīng)隱藏算法、 dct域奇偶性嵌入算法和改進的融合算法,同時提出了差值矩陣的dct域隱藏算法,給出了這些算法的信息嵌入與恢復(fù)過程,并對頻率域內(nèi)的這些隱藏算法的魯棒性進行了分析。
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 本文利用矩陣理論和有限域理論,研究了投影矩陣、置換矩陣、差集矩陣、 hadamard積、廣義的hadamard積、 kronecker積, kronecker和、廣義的kronecker和在構(gòu)造正交表方面的應(yīng)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 在頻率域內(nèi),研究了基于dct變換的信息隱藏技術(shù),提出了改進的dct自適應(yīng)隱藏算法、 dct域奇偶性嵌入方法和改進的融合算法,同時提出了差值矩陣的dct域的隱藏算法,給出了這些算法的信息嵌入與恢復(fù)過程,并對頻率域內(nèi)的這些隱藏算法的魯棒性進行了分析。
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 在空間域內(nèi),利用人的視覺特性,本文提出了基于圖象方差、圖象平坦測度和基于模糊分類的隱藏算法,同時提出了基于關(guān)系、基于差值矩陣和基于密碼算法的隱藏方法,并提出了備份隱藏和偽裝隱藏兩種隱藏方案。