純量隨機變量 的英文怎麼說
中文拼音 [chúnliángsuíjībiànliáng]
純量隨機變量
英文
scalar random variable-
Considering the fuzziness of some boundary conditions enviroment media, and especially some loads in the engineering structure analysis, we go further into the computation based on the dynamic problem of fuzzy finite element ( ffe ), study further and systematically the analysis and solution. the principle of fuzzy minimum potential energy is established, and the balance equation of fuzzy finite element is reasoned by making fuzzy variation. at the same time, the dynamic balance equation of stochastic by making stochastic variation ， also the fuzzy stochastic dynamic balance equation is deduced. based the theory that the degree of the fuzziness and probability can be measured, in the other word, by using the concept of fuzzy entropy and entropy, pure fuzzy dynamic structure is given through transforming the probability to fuzziness. for the fuzzy parameter can be regarded as a fuzzy vector with dimensions, the structure ' s eigenvalue, by the theory of small parameter
建立了模糊瞬時最小勢能原理，運用模糊變分原理導出了模糊有限元動力平衡方程；同時，利用隨機變分原理導出了動力問題的隨機有限元方程，同時得到了模糊隨機動力問題的有限元平衡方程。根據模糊度和概率度可以度量的原理，即利用模糊熵和概率熵的概念，把結構的隨機性等效地轉化為結構的模糊性，得到純粹模糊性的動力結構。把結構所具有的模糊參數看作一個維的模糊向量，利用小參數攝動原理，把結構的特徵值，特徵向量和位移都在模糊向量的均值處進行泰勒展開，得到一組遞歸方程，即可以求得結構的模糊特徵值，特徵向量和模糊位移。Filling cu or cuo powder has changed the wear mechanism of rubbing pairs of uhmwpe - steel. when pure uhmwpe pairs up with steel, adhesive wear takes place. but after the cu or cuo power are putted in, adhesive wear and abrasive wear take place at the same time, and the percentage of abrasive wear increases accordingly with the increase of filler
填料的加入改變了uhmwpe與鋼配副時的磨損機理，純uhmwpe與鋼配副時的磨損機理是粘著磨損，加入填料后變為粘著磨損與磨料磨損共存的狀態，而且隨著填料含量的增加，磨料磨損所佔的比重上升。Sintering or friction all brought about chemical change in the surface of solid lubricant and the change of valen ce state of mo, s, fe and so on ; the micro - hardness of pure ptfe was minimum and the surface - hardness of solid lubricant was increased with the increase of additional packing filler in formula ; the compressive strength of pure ptfe was minimum and its compressive strength could be increased notably by adding organic and inorganic filler. but not more additional amount, more notable increase of compre
、 feso4 、 cus等物質;燒結及摩擦均使固體潤滑劑表面發生化學變化，使mo 、 s 、 fe等元素的價態發生變化;純ptfe的顯微硬度最低，固體潤滑劑的表面硬度基本是隨著填料加入量的增加而增加的;純ptfe的抗壓強度最低，在ptfe樹脂中加入無機填料均可明顯提高其抗壓強度，但並不是加入量越多，抗壓強度提高越明顯。It is true in difficult cases, such as degraded dna or samples containing minimal amounts of genomic dna. to investigate the sequence diversity of mtdna in taiyuan han population, mtdna nt16081 - 16546 sequences were determined in 58 unrelated han chinese from taiyuan. sscp method was developed as one of screening measures which were used to examine polymorphism of mtdna, so as to supply a rapid and simple method for forensic casework
方法隨機抽取58名太原地區漢族群體無血緣關系個體的靜脈血， edta抗凝，改良的tkm法提取mtdna ， pcr擴增、純化后，應用377序列分析儀進行直接測序分析；對毛發、指甲、骨骼等微量或嚴重降解檢材進行mtdna序列分析；採集同一屍體血液、肌肉、肝、腎、心肌、不同部位的毛乾等組織進行同一性檢測；對20個兩代家系進行突變觀察。We used this system to check some representative images on the web, we could got a conclusion that most encode images is easy to decode. without right theory they can ’ t build a robust encoded image. and through thorough experiments by this platform i have concluded such points : single alpha encoded is useless, we must encode all characters as whole ; confusion points are useless, we must use confusion lines which look like stroke ; enlarge base of character such as chinese character, not only digital number and alpha
並且通過該平臺的廣泛實驗總結出增強圖片加密強度的幾個要點:只加強單個字的加密是不行的，必須把整體作為加密對象，增強字與字之間的干擾;單純的噪點作用不大，具有筆畫特徵的干擾線作用更大;應該引入一些隨機變量，比如每副圖片的字個數隨機，加密方法隨機選擇;增大可選詞匯的基數，可以考慮使用漢字，而不單純是數字和英文。分享友人