隨機置換 的英文怎麼說

中文拼音 [suíjīzhìhuàn]
隨機置換 英文
random permutation
  • 隨 : Ⅰ動詞1 （跟; 跟隨） follow 2 （順從） comply with; adapt to 3 （任憑; 由著） let （sb do as he li...
  • 機 : machineengine
  • 置 : 動詞1. （擱; 放） place; put; lay 2. （設立; 布置） set up; establish; arrange; fix up 3. （購置） buy; purchase
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 隨機 : random stochasticrandom
  • 置換 : displace; substitute; supersede; substitution; replacement; permutation; transposition; transposi...
  1. This arithmetic divides the wavelet coefficients of carrier image into 27 - classes by the background luminance, the texture and the edge mask character of visual system ; then after encrypting watermark image with magic cube transformation, the ycbcr model is employed, it embeds the watermark sequences in the carrier image with different intensity according to the coefficients " classes of carrier image in y channel

    首先，將載體rgb圖像轉換到ycbcr顏色空間，然後提取亮度通道y ，將其進行小波變換，然後利用人眼視覺模型對載體圖象分解后的小波系數進行分類。其次，對有意義的水印圖像分別進行3次不同的魔方置亂，得到3個隨機水印序列。
  2. With the development of electronics and microcomputer, microprocessor - based protection has advanced. but some of them are just the republication of the electromechanical and electronic proteciton. they can not fully utilize the computing capability and logic judgement that the computer has and most of the microprocessor - based protection is running isolated

    異步電動機保護的研究由來已久，隨著電子和微機技術的發展，異步電動機微機保護也得到了快速的發展，但很多僅是機電式和電子式保護的翻版，沒有充分利用微機所具有的強大的計算能力和邏輯判斷能力，而且目前的異步電動機保護裝置大都是單臺運行，與外界進行數據交換很少。
  3. 19. adjustable cement plate generally, the cement plate on an automatic toe cementing lasting machine is usually fixed and stable. the structure of being adjustable quite fits the production for different shoes mixing on the same production line. without any tool, the plate can be easily and quickly adjusted to have an appropriate cementing position for different sizes of shoes, which will produce perfect cementing effect and will not have to change plate for making different sizes of shoes

    一般使用自動上膠之前幫機膠盤均為固定式，不可任意調整，本機膠盤大小可調整結構為適應大小號鞋子于生產線上，同時混合生產時，不需要運用工具而可簡單快速的調整膠盤的大小寬度以使膠著貼能隨大小號鞋子塗在適當位置，使黏著效果更為完美，而同一型體之鞋子也不必因量多而更換膠盤。
  4. It takes use of pseudo - random technology, dynamic adaptive technology, multi - channel technology, random position embed technology and so no. so the digital watermarking can resist the physical process of printing and scanning. at the same time, the watermark is binary image which includes a great deal of information, such as personal id, secret information, even a piece of map

    本文特別針對印刷和掃描給數字圖像帶來的誤差的問題，設計了一種新的水印演算法，綜合運用了偽隨機處理技術、動態自適應技術、不同應用選擇不用頻帶處理技術、隨機位置嵌入技術、多通道嵌入等技術，使得本文所設計的水印演算法能夠抵抗印刷和掃描的物理轉換過程，同時本文所設計的水印是二值圖像，能夠承載大量的信息，例如個人id 、機密信息、商標標識，甚至可以是一幅地圖。
  5. There is difference frequency measurement requirement for every part of pid regulating, difference between dynamic quality and static quality in response time and accuracy. according to these, it use the interrupt functions and high - speed counter of the simens s7 - 200 plc cpu226 basic unit and some peripheral circuit to measure frequency ; in software designed, the procedure frame of hydraulic - turbine governor and disperse process of parallel pid are analyzed, an improved pid algorithm is adopted to realize a pid regulation mode with variable structure and parameters ; the mechanical liquid - pressure system of the hydraulic - turbine governor is with electric - hydraulic converter unit of step motor. according to the drive character of five phase of response step motor, a variable frequency regulated voltage driver unit is designed in order to realize interface between plc and driver of step motor

    本文利用s7 - 200plc自身的特點設計了頻率測量單元，根據pid調節各個環節的特點，以及調速器動態特性、靜態特性對頻率測量的實時性和精度要求的不同，利用s7 - 200plc基本單元中內置的高速計數器以及相應的外圍放大整形、分頻電路，實現了水輪發電機組頻率的測量；在軟體上，對微機調速器的整個程序框架、並聯pid的離散化過程進行了分析，選用改進的pid演算法實現了變參數、變結構的pid調節模式；調速器的機械液壓隨動系統具有步進電機電液轉換元件，採用五相反應式步進電機，根據其驅動特性設計了變頻調壓驅動器，實現plc與步進電機驅動器之間數字介面。
  6. To facilitate the detection of gene replacement, apr gene was placed in the middle of the two inserts. orit from e. coli plasmid rk2 was also incoporated into the vector, therefore, pij903 derivatives can be mobilized from e. coli into streptomyces sp. fr - 008 by either bi - parental conjugation or by conjugation between streptomyces

    為了在克隆完整基因簇時避免這兩方面的影響並能隨機地獲得dna大片段，我們將第二代yac載體pjs97 - pjs98改造成為適合於在白林泉鏈黴菌基因組中dna大片段的基因置換與克隆鏈黴菌中分析被克隆大片段功能的基因置換載體。
  7. Cool wall wizard dreaming to automatically download various colors wallpaper to work intensely all day into your computer, no longer feel monotonous and boring ; extremely rich in the network wallpaper, the 12 classification, support manually download new wallpaper ; intelligent frame rapid trimming technology, adaptive various popular display size ; timing can be manually or replacement of desktop wallpaper, different timing of the transformation also supports random transform mode ; circle player in the process, support the insertion of local wallpaper, wallpaper and local networks of pictures that turn ; to hide / show desktop icons, wallpaper and user - friendly viewing ; since the launch set to boot, the first time you gave surprise ; cool wall wizard provide three kinds of styles console skin ( white fashion, classic black, gray and elegant ) ; wallpaper borders can set the color to the background transparent desktop text

    雪狐酷壁精靈自動下載各類絢麗的壁紙，讓整天對著電腦埋頭工作的你，不再感到單調、無聊；極豐富的網路壁紙庫，十二大分類，支持手動下載新壁紙；智能邊框快速切邊技術，能自適應各種流行的顯示器尺寸；可以定時或手動更換桌面壁紙，提供不同變換時間的選擇，還支持隨機變換模式；循環播放過程中，支持插入本地壁紙，實現網路壁紙和本地圖片的交替顯示；可隱藏/顯示桌面圖標，方便用戶觀賞壁紙；允許設定開機自啟動，第一時間就給你驚喜；酷壁精靈提供有3種風格的控制臺皮膚（白色時尚、黑色經典、灰色典雅） ；還能設置壁紙邊框的顏色，讓桌面文字的背景透明。
  8. In this paper, chroma dc coefficients are selected as the carrier data because chroma dc coefficients are robust. also, alterable steps are used to select one part of the coefficients, so the watermark is imperceptible ; before watermark embedding, the watermark is divided into many parts, every part is individually embedded into one gop of the video, even if a gop is destroyed, the watermark can be extracted correctly, this methods promotes the robustness of the watermark ; in addition, in order to promote the security of the watermark, the user ' s id and password are used to generate chaos sequence by the chaos system which is created in this paper, later, watermark is mixed by the chaos sequence. also, the embedding position of the watermark bit is modified by one chaos sequence, so, unauthorized person can not extract or remove the watermark, since the embedding position is unknown

    本文認為，色度dc系數是魯棒性非常好的參數，因而選擇色度dc系數作為水印信息載體，同時，採用可變的步長選擇部分系數，保證了水印的隱形性；在嵌入水印時，本文採用水印信息「網格劃分」 、各子塊獨立嵌入視頻的方案，由於水印信息子塊是相對獨立的嵌入視頻中的每一相對獨立的圖組當中，即使某一圖組收到一定破壞，也能夠恢復水印信息，使水印的健壯性得到提高；此外，為了提高水印信息的安全性，在嵌入水印信息時，根據用戶輸入的id號和密碼，利用本文構造的混沌系統產生的混沌序列對水印信息進行變換，同時，對每一水印信息比特的嵌入位置也採用了偽隨機序列進行調整，這樣，未授權用戶不能提取水印信息，也難以擦除其中的水印信息，因為嵌入的位置是未知的。
  9. With the expansion of exchange capacity and network convergence, quite a lot of manufacturers has installed built - in sdh interfaces in their switches so as to provide trunk modules of the stm - 1 ( 155 mbs ) rate, such as shanghai bell s p3s exchange and huawei s c & co8 exchange

    隨著交換機容量的擴大和網路融合的趨勢，目前已經有相當多的廠家都內置了sdh的介面，能夠提供stm - 1 （ 155mbits ）速率的中繼模塊，具體如上海貝爾的p3s交換機和華為公司的c & c08交換機。
  10. In the thesis, we proposed a random lattice model of mea the lattice model randomly occupied by three kinds of particles, pt / c, nafion and ptfe ( poly - tetra - fluoro - ethylene ), was generated on a computer by the means of monte carlo method. it was supposed that current was only produced on those catalysts which have not only channels of electrons via carbon but also have channels of proton via nafion. the purpose of the work, in a word, is to find how many catalysts, pt / c, with such a two - types channels

    本文首先建立了質子交換膜燃料電池的膜電極的隨機方格子模型，在電極模型各格點位置用montecarlo方法生成隨機分佈的電極粒子、 nafion粒子和聚四氟乙烯團粒，認為只有那些既有質子傳輸通道，又有連續的電子通道和氣體擴散通道的胞元才產生有效的電流，而其餘胞元不產生電流，把電極的輸出電流轉化成一個概率事件。
  11. Finally, the random vibration analysis of the signal transform device is presented. experimental modal analysis is discussed briefly. the reasons why the relays on the printed circuit board were destroyed under random acceleration excitations are found out

    本文最後對信號變換裝置進行了隨機振動響應分析，簡要探討了實驗模態分析法，找出了裝在印製電路板上的繼電器在隨機振動試驗中被損壞的原因，也介紹了結構動力模型修正技術的發展。
  12. For the signal transform device, a commonly met dynamic loading is random vibration, as met in the flight experiments, etc. therefore, analyzing the dynamic response of some key components under random vibration, and further minimizing its adverse consequences on the products is very important for the signal transform device designs

    信號變換裝置在飛行試驗等試驗中常常要經受隨機振動。因此，對于信號變換裝置來說，分析隨機振動下關鍵器件的動力響應並進一步最小化不利影響是非常重要的。
  13. 1 luby m, rackoff c. how to construct pseudorandom permutations from pseudorandom functions. siam journal on computing, 1988, 17 : 373 - 386. a preliminary version including other results appeared in proceedings of the 18th acm symposium on theory of computing, 1986, pp. 356 - 363

    可證明安全理論在分組密碼中的研究始於luby和rackoff對des的工作，他們形式化地描述了分組密碼的密碼特性，依據不同的攻擊，定義了偽隨機置換和超偽隨機置換的概念。
  14. The usual methods of dealing with stochastic or fuzzy chance constrained linear programming are converting the chance constraint conditions to respective definitive or clear mathematic programming problems to compute them, according to given belief level

    求解隨機或模糊機會約束線性規劃的傳統方法是根據事先給定的置信水平，把相應的機會約束轉換為各自確定的或清晰的數學規劃問題進行計算。
  15. Hcbc is proven secure against chosen - plaintext attacks assuming that e is a prp secure against chosen - plaintext attacks, while hpcbc is proven secure against choen - ciphertext attacks assuming that e is a prp secure against chosen _ ciphertext attacks

    但是如果假設是一個抗選擇密文攻擊的安全偽隨機置換，則可以證明hpcbc對選擇密文攻擊是安全的。
  16. Subdivide multi fractal - as above, but new vertices are randomly displaced within a user - defined range

    不規則多次細分-與上一樣，但它是在用戶定製的范圍內隨機置換細分。
  17. The watermarking scheme based on wavelet decomposition and discrete cosine transform using a binary pattern or gray - level pattern as the watermark, the scheme initially performs wavelet decomposition of the host image and the watermark with different hierarchy. after the pseudo - random permutation, each decomposed layer of the watermark is embedded into the dct domain of corresponding decomposed layer of the host image

    基於小波分解和餘弦變換結合的水印方案演算法以二值圖標或灰度圖標作為水印，將原圖像和水印信號分別進行不同層次的小波分解，分解后的水印各分量偽隨機置亂後分別嵌入到原圖像相應分解層各分量的dct域中。
  18. Random group and random permutation of idea

    的隨機群和隨機置換
  19. After introducing several novel scrambling algorithms [ 2 ] [ 3 ], we define the concept of ergodic matrix, which can be used to scramble the positions of the pixels of an image

    首先，通過引入遍歷矩陣進行圖像的置亂變換。我們提出了幾種新的置亂變換（隨機陣變換、輔助圖像變換）等。
  20. 27 bovine thorathic - iumbar spine were randomiy divided into three groups, which were controi group, iiiac bone graff group and aht - avb group

    27具小牛胸腰椎標本隨機分為對照組，髂骨植入組及人工椎體置換組。
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