隨機變換 的英文怎麼說
中文拼音 [suíjībiànhuàn]
隨機變換
英文
stochastic transformation-
Sequentially, the author discussed the technologies of medical image 3d visualization according to the clinical applications. with the development of computer, 3d visualization and computer graphics, the 3d visualization of medical images has progressed from fourier transform and convolve inverse projection to mpr ( multi - planar reformation, mpr ) and mtp ( maximum intensity projection, mtp ), nowadays, the real 3d reconstruction method, surface and volume rendering has risen. the image registering, image segmentation, pixel data set construction and 3d special interpolation are the key technologies in medical images 3d reconstruction
隨著計算機技術、三維可視化理論和計算機圖形學的發展，醫學圖像的三維可視化技術也從傅立葉變換、卷積反投影等基本圖像處理演算法，發展到真正的三維重建演算法：面繪制和體繪制；醫學圖像的三維可視化技術的應用也從三維醫學成像發展到虛擬內窺鏡，以及今天的虛擬可視化人體研究；而圖像的配準、圖像分割、體數據集的構建、三維空間插值則是醫學圖像三維可視化實現過程中的關鍵技術環節。For the anticounterfeiting of printings ( such as certificate ), the existent many ways ( such as rainbow holograms ) are not available as the need for special use : anti - distortion and anti - copy. basing in the double - random - phase transform, this article puts forward a new way that two - dimensional bar code is used as anticounterfeiting label with anti - printing ? scanning and anti - damage properties. the major job are : ( 1 ). basing in the ascii codes, numerals and alphabets are encoded and subsequently transformed into two - value bar code matrix figure. later, using amplitude - based double - random - phase transform, the enciphered gray scale figure is formed. by computer simulation ( 4f system ) and printing as well as scanning ( 20 times ), we get the result that the gray scale figure with little miscoding rate ( 0. 0026 ) by “ matrix expanding way ”
本文主要開展了以下三項研究工作: （ 1 ） .用自定義編碼方案，將數字和字母（ ascii碼）轉換成二值條碼圖;對該圖形進行振幅型雙隨機相位加密變換，得到原信息的加密灰度圖;通過4f光學系統計算機模擬和列印-掃描實驗，證明本文提出的「矩陣擴展法」灰度圖具有較小的誤碼率，對於20次列印-掃描實驗，誤碼率不大於0 . 0026 。Abstract : the far - field spot characteristics of laser converted by random phase plate are analyzed theoretically, including the shape, size, rotational symmetry and diffractive efficiency of the spots, as well as the distribution of subsidiary spot. by comparing the influence of phase element shape ( triangular, square and hexagonal ) on the characteristics, we found that the random phase plate with hexagonal array structure is more suitable for the beam smoothing in laser fusion
文摘:從理論上分析了激光經隨機位相板變換后在遠場的光斑特性（包括光斑的形狀、大小、旋轉對稱性、衍射效率以及旁瓣分佈） ，通過比較三種形狀位相元（等邊三角形、正方形和正六邊形）的遠場光斑特性，得知正六邊形位相元結構的隨機位相板更適合於激光聚變中的束勻化。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。Specially, based on risk - metric and factor variables, the author discusses multi - factor asset pricing model. in theoretical analysis, the author attempts to release the assumption of index ' s random walk, proves a portfolio selection model suitable for the linear index level moreover, based on assets un - exchangeable, the author brings forward asset pricing models for b - shares, h - shares and non - circulated - shares. the author also brings forward multi - factor asset pricing model based on risk - metric indices, such as coefficient of beta, standard variance, standard semi - variance, average absolute deviation, value at risk, and factor variables, such as circulated market equity, exchange ratio, short - term historical return
在理論分析時，作者嘗試放鬆指數水平滿足隨機遊走過程的假設，推導出指數水平呈線性趨勢的資產組合選擇模型；此外，作者基於資產不可交易這一假設，提出了b股、 h股和非流通股等情形的資產定價模型，並基於系數、標準差、標準半方差、平均絕對離差和風險價值等風險度量指標以及流通市值、換手率、短期歷史收益率等因素變量提出了四因素資產定價模型。This text aims to establish mathematics model, everyday randomicity variable to be set up by the discrete transformation method, to set up the simulation parameter form and the moleling and covariance form, draw the procedure flow chart to proceed simulative newspaper calculator problem
摘要通過建立數學模型、運用離散反變換法產生每天賣報數隨機變量、建立模擬參量表和建模及統計變量表、畫出程序流程圖等步驟對報童問題進行模擬。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。The basic agc roles include : ( 1 ) making generation follow the load change, and holding system frequency on fix value ; ( 2 ) dispatching power to each area, and holding exchanging power on fix value between each area
其主要功能是響應負荷和發電的隨機變化，維持電力系統頻率為規定值，響應各區域分配系統發電功率，維持區域間凈交換功率為計劃值。Then li yirig - fu extended taylor and hu s results, in this section we extend li ying - fu ' s results to the cases of random index, and obtain random strong laws of large numbers, meanwhile we obtain theorems of random weighted sums, the results are the following
李應富改進和推廣了taylor和hu的結果，本節中我們又將李應富的部分結果推廣到了隨機足標的情形，得到了可交換隨機變量序列的隨機強大數律，另外還得到了隨機加權和定理，主要結果如下：定理1If either of strength and stress is stochastic variable and another is fuzzy variable, the. fuzzy variable can be transformed to section number on the assumption that the probability of fuzzy variable taking some points in that section is proportional to its value of membership function respectively, then the probability of structural fuzzy event is transformed to general probability with stochastic strength and stress variables and can be solved by general probability theory
當強度和應力之一為隨機變量，另一個為模糊變量時，提出將模糊變量通過模糊集合截集轉換為區間數，並假定模糊變量在此區間取值的可能性與相應的隸屬函數值成正比。採用上述處理后，結構模糊事件的概率即轉化為相應的普通事件概率，可按應力和強度為隨機變量，用常規可靠性理論進行求解。In chapter l, we introduce the relative background on this paper and give some simple expressions of the work which have been studied. in chapter 2, in virtue of the notion of likelihood ratio the limit properties of the sequences of dependent nonnegative continuous random variables are studied, and a class of strong limit theorems represented by inequalities are obtained. the bounds given by these theorems depend on positive constant c. in chapter 3, by means of the notion of log likelihood ratio, a kind random strong deviation theorem are obtained, and the bounds given by these theorems depend on r ( )
第一章，介紹本論文的選題背景，對已有的工作進行扼要的介紹；第二章，利用似然比的概念研究相依連續型非負隨機變量序列的極限性質，得到一類強偏差定理，其偏差界依賴于正常數c ；第三章，利用對數似然比的概念得到一類隨機偏差定理，其偏差界依賴于r （ ） ，證明中引進了尾概率和尾概率的laplace變換的概念；第四章，利用對數似然比的概念，得到了一類關于任意連續型隨機變量序列的泛函的強偏差定理。We also give the reliability analysis of cold -, warm standby repairable system of two components with continuous lifetime switch and priority, under the condition that the operating time and maintained time of the two components and the lifetime and repair - time of the switch are all exponential distributions. all the variables are independent, and the lifetime of operating components have nothing to do with its maintained time, and the failure components and switch can be as good as new after repair
對于由兩個不同型部件組成的、有優先權的、開關壽命為連續型隨機變量的冷、溫貯備可修系統，本文在兩部件的工作時間、維修時間以及轉換開關的壽命和修理時間均服從指數分佈、所有隨機變量均相互獨立、工作部件的壽命分佈與其貯備時間無關、故障部件和轉換開關均可修復如新的情況下作了研究。In this paper, by means of the notion of likelihood ratio and log likelihood ratio the limit properties of the sequences of dependent continuous random variables are studied, and a class of strong limit theorems represented by inequalities are obtained. in the proof an approach of applying the tool of laplace transform to the study of strong limit theorem is proposed
本論文繼續這方面的工作，利用似然比、對數似然比的概念研究相依連續型隨機變量序列的極限性質，得到相應的用不等式表示的強偏差定理。證明中提出了將laplace變換的工具應用於強極限定理研究的一種方法。We divide document image into two parts - text and background. text area is regarded as a series of random variables with 0 - 1 distribution and background area as a series of random variables with degenerate distribution. because the median filter is robust for degenerate distribution, it can reduce the noise
文本圖像通常可以轉換成二值圖像，我們可以把文本圖像的文字區域和空白區域分別理解為兩個相互獨立的隨機變量序列的依次觀測，其中一個是服從兩點分佈，而另一個服從退化的單點分佈。Su chun, shao qi - man solved the problem, we investigate the relations between the convergence of tail probability series and the existence of some type of the moment for partial sums of interchangeable random variables and positive monotone functions, we answer the three questions for interchangeable random variables, our results are new and we obtain a series of sufficient and equivalent results. in section 4 we give the law of interated logarithm for interchangeable random variables, and obtain the following main results
藝闊8藝潤、藝側蘇淳、邵啟滿解決了pi ， ollorov提出的這一問題，這一節我們通過討論可交換隨機變量序列的部分和關于正值單調函數的尾概率級數的收斂性和某種形式矩的存在性之間的關系，回答了在一定條件下可交換隨機變量關于這三個問題的一些結果，這些結果是全新的，並得到了一系列充分性和等價性結論By employing de finetti theorem, in chapter two we discuss the limit behaviour of interchangeable random variables squences, mainly including the convergence rates in the central limit theorem and the law of the iterated logarithm
第二章主要討論了可交換隨機變量序列的極限性質，具體包括中心極限定理的收斂速度和重對數律，所得的結論補充了可交換隨機變量極限理論方面的結果。According to the problem that the recovery rate is traditional treated as a constant or an independent stochastic variable by the classical credit risk pricing and management model, and problem that the negative correlation between the default probability and recovery rate is always neglected, this dissertation gets the exponential and logarithm regression models of default probablilty and recovery rate based on some empirical researches, and improves on several broadly applied credit risk models, such as structural hazard rate model, affine structure model, convertible bond pricing model and credit metrics model, and introduce the negative correlation between
針對傳統的信用風險定價模型及信用風險管理模型將違約回收率看成是一個外生的常數或是一個獨立的隨機變量，而忽略回收率和違約概率之間的負相關性這一問題，本文應用相關實證研究得到了違約概率和回收率的指數和對數回歸模型，並對應用非常廣泛的結構化風險率模型、仿射結構模型、可轉換債券定價模型和creditmetrics模型進行了改進和拓展，在新模型中應用指數和對數函數引入了這兩個變量之間的負相關性。Based on the approach of turning some of the relevant extreme - value - type and logarithmic normal distribution variables into independent and normal random variables, the shear - slipping failure probability of a high arch dam is worked out to be of the order of magnitude of 10 ^ ( - 5 ) by means of second - order moment method
在將部分相關的極值型與對數正態分佈隨機變量轉換為獨立、正態隨機變量的基礎上，利用二階矩法計算得到某高拱壩的剪滑失效概率為10 ^ （ - 5 ）量級。Conclusion the intra - individual variation of women ' s menstrual cycles was essentially random ; in other words, it could not be precisely predicted, from a cycle of a woman, whether her next cycle would increase or decrease ( relative to the mean or median of her cycles )
結論婦女月經周期的個體內變異基本上是隨機的；換言之，從某人某次的月經周期難以準確預測其下次月經周期的升降（相對于其周期均值或中位數而言） 。Blind watermarking algorithm based on the wavelet and pseudo - random transform
基於小波和偽隨機變換的盲檢測圖像水印演算法分享友人