distortion matrix 中文意思是什麼

distortion matrix 解釋
變形矩陣
  • distortion : n. 1. 歪扭，扭曲。2. 【電學】（信號、波形等的）失真；【物理學】（透鏡成像產生的）畸變；【醫學】扭轉，變形。3. 竄改，歪曲，曲解。adj. -al
  • matrix : n （pl matrices 或matrixes）1 【解剖學】子宮；母體；發源地，策源地，搖籃；【生物學】襯質細胞；間...
  1. 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 。
  2. The damage performance - based aseismatic design method can calculate distortion and dissipating hysteretic energy under seismic action, and form intuitionistic aim matrix of damage performance by damage index

    基於地震損傷性能的設計方法考慮了地震作用下結構的變形和累積耗能，並將性能量化為損傷指數，形成直觀的損傷性能目標矩陣。
  3. Bone will produce electrical potential when subjected to deformation. it is necessary to research the role of the potential in bone growth, remodeling. according to the physiological structure of bone tissue, the biphasic porous medium model, which is based on the mixture theory in continuum frame, is established to depict the distortion and stress field of bone matrix, the flowing field and the resulting electric field when the bone tissue is subjected to outside force

    =由於骨內應力能夠產生電位並促進骨的發生和重建，為明確其作用機理，論文在連續介質力學框架內的混合物理論的基礎上，根據骨組織的生理結構特點，應用兩相多孔介質模型來描述骨組織在受外界作用下的變形場、應力場、流動場以及由此產生的電場。
  4. This paper introduces the switching device, which will be used in an artificial system. it introduces the basic theory of communicating switching and the process of design and, on the base of expirement, we get each testing datum when digital signals pass the switching matrix, which prove digital signals can pass the switching matrix with little distortion

    闡述了矩陣交換的基本原理和矩陣交換設備的設計過程，並在實驗的基礎上給出了數字信號通過矩陣開關時的各項實驗數據指標，從而證明了信號通過矩陣體時，失真小、干擾小，能夠較好的滿足實用要求。
  5. The displacement quantity can be transform into corresponding standard industrial measuring signal, when in a certain overpressure, the membrane could be direct stuck on the solid matrix. if overload pressure is increased the membrane also cannot be made the greater distortion, then be sure that the membrane cannot be damaged because of overpressure, so that the sensor has the very strong anti - impact and anti - overload ability

    把位移量換成相對應的標準工業測量信號，在一定過壓時，膜片會直接貼到堅固的基體上，過載壓力加大，也不會使膜片產生更大的變形，從而保證膜片不會因為過壓而損壞，所以傳感器有很強的抗沖擊及抗過載能力。
  6. Based on the initial parameters format of the distortion theory in this paper, the element stiffness matrix and the corresponding equivalent nodal force vector subjected to uniformly distributed load is developed

    在初參數格式的基礎上，本文又推導出考慮剪切變形的畸變分析的剛度矩陣及等效節點載荷列陣，獲得便於實際應用的畸變分析剛度法。
  7. But, though considerable process has been made in the last ten years, digital watermarking is still in its infancy, and much interesting work remains to be done this thesis addresses some problems in the gray - scale image digital watermarking that are summarized below : 1 ) whereas the basic theory of digital watermarking is still very poor, a digital watermarking mathematic model based on imperceptibility and robustness is presented by analysising the characteristic of digital watermarking ; 2 ) based on the model constructed above, by defining the measures of capacity and robustness of digital watermarking, an objective method for evaluating the digital watermarking is introduced and used to analysis some algorithms ; 3 ) whereas geometric distortion always influences the restoration of watermark, we advocate to enhance the robustness against geometric distortion by restoring the image which has been distorted by geometric transformation, and a method is designed for estimating the parameters of geometric transformation ; 4 ) based on the conclusion discussed above, and combined with the masking effects of hvs, a novel public meaningful gray - scale image digital watermarking is designed by analysising the characteristics of image gray - scale interpolation and haar wavelet transformation. the experimental results show that the method is indeed powerful ; 5 ) whereas many image digital watermarking schemes, which embed watermark by modifying the values of pixels in spatial domain and transformed domain, are confronted with the conflict between the imperceptibility and robustness, we advocated to use some stable digital characteristics of host image as watermark and a algorithm based on hermite matrix is designed

    本文重點對灰度圖象數字水印技術進行研究，主要工作如下： 1 ）鑒于目前數字水印的理論研究比較薄弱的現狀，本文通過分析數字水印的特點，建立了一個數字水印的數學模型，為進一步研究數字水印打下了基礎； 2 ）根據以上建立的模型，通過引入容量和穩健度的概念為數字水印提供了一個客觀評價方法，並對一些數字水印演算法進行了分析； 3 ）為增強數字水印抵抗幾何攻擊的能力，研究了受幾何攻擊的圖象的復原問題，並給出了一個計算圖象幾何變換參數的方法； 4 ）通過分析圖象灰度插值演算法和haar小波變換的特點，結合hvs的掩蔽效應，設計了一個公開的有意義數字水印演算法，實驗結果表明本演算法具有較強的穩健性； 5 ）目前許多水印演算法都是通過在空域或頻域修改象素值的方法嵌入水印的，這種方法面臨著透明性和穩健性的矛盾，為解決這個矛盾，本文提出以圖象的某些穩定的數字特徵為水印的觀點，並結合hermite矩陣的特點設計了相應的水印演算法，實驗結果表明該演算法具有較好的穩健性。
  8. Progress of study on curing induced shape distortion for resin matrix thermosetting composites

    熱固性樹脂基復合材料固化變形研究進展
  9. Research on off - line handwritten character recognition has great worth. the information of off - line handwritten character is very scarce ( only 2d pixel matrix ), and the handwritten characters have so many classes, complex strokes and shape distortion. all of above have become the obstacle of character recognition

    由於在脫機手寫體字元識別中，處理的僅是二維的字元點陣圖像，而且存在字元類別多、字形結構復雜、手寫字元的變形很大等問題，目前脫機手寫字元識別技術還很不成熟，仍處于實驗室研究階段。
  10. In chapter 3, we discuss the problem of doa estimation in the presence of spatially nonstationary noise fields. an estimate of the colored noise covariance matrix is firstly given. the received data for parameter estimation is then prewhitened using the estimated noise covariance, hence, overcoming the highly biased estimates. finally, adaptive beamforming with the modified weight is also performed. computer simulations show that the proposed method can completely remedy beam distortion. 3

    在第三章討論了一種在環境噪聲為白噪聲而陣元噪聲為空間非平穩情況下的doa估計問題，給出了一種有效的估計陣元噪聲功率的方法，進而利用估計的噪聲協方差矩陣進行預處理而實現色噪聲環境下的doa估計，理論分析和模擬結果均表明了本章提出的方法的有效性。
  11. The paper consider bone tissue as an biphasic porous medium, which is composed of solid bone matrix and liquids as extracellular fluid. on the other hand, bone tissue can produce electric potential when it is subjected to outside force. so dynamic governing equations can be established through combining the biphasic porous medium model and the streaming potential model, which describe the coupling between the distortion and fluid flow as well as the streaming potential

    論文首先考察了骨組織的生理形態結構及其組成，據此將骨組織模型化為一種由固體骨基質和由細胞外液和血液等組成的液體所構成的兩相飽和多孔介質，並進一步假設固體骨質為各向同性彈性介質，而孔間流體為理想流體；另一方面，骨組織在受到應力作用變形后能夠產生電位。
  12. Curing agents and mixing conditions were two important factors that effected on exfoliation behavior of organophilic montmorillonite in diglycidylether of bisphenol a matrix. the organophilic montmorillonite was exfoliated completely and there were no d001 diffraction peaks with methyltetrahydrophthalic anhydride as curing agent and benzyldimethylanine as catalyst. properties test results show that mechmical properties, electricity properties, heat distortion temperature of the exfoliated nanocomposites were all improved by addition of the montmorillonite, and the nanocomposites had lower linear thermal expansion coefficiency and water absorption compared with neat epoxy resin

    結果表明，環氧樹脂與有機蒙脫土的相容性好；混合條件和固化劑是影響有機蒙脫土在環氧樹脂中剝離的兩個重要因素，在一定的混合條件下並選用合適的固化劑可以使蒙脫土在環氧樹脂中完全剝離；剝離型環氧樹脂蒙脫土納米復合材料的力學性能、電性能、熱性能以及吸水性能與純環氧樹脂固化物相比均有不同程度的提高和改善。
  13. The paper gives a summary for the current technology situation of foreign and civil in the field on torsion and distortion of box gird bridges. by general bending theories, transfer matrix methods is used in the torsion and distortion of continues box gird bridges

    在分析變截面連續箱梁扭轉與畸變內力時所採用的方法是一種比較實用的計算方法即傳遞矩陣法，研究任意變截面連續箱梁的扭轉、畸變及橫向撓曲。
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