次高有效字 的英文怎麼說

中文拼音 [cìgāoyǒuxiàozì]
次高有效字 英文
next most significant word
  • 次 : Ⅰ名詞1 （次序; 等第） order; sequence 2 [書面語] （出外遠行時停留的處所） stopping place on a jou...
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 字 : Ⅰ名詞1 （文字） character; word 2 （字音） pronunciation 3 （字體） form of a written or printed ...
  • 有效 : effective; valid; efficacious
  1. Firstly, we generalize and analyze the advantages and present research of elliptic curve cryptography ; secondly, we study the basic theory of the ecc ; thirdly, we illustrate the safety of the ecc and discuss the elliptic curve key agreement scheme, elliptic curve encryption scheme and elliptic curve digital signature algorithm ; fourthly, we study fast algorithms of the multiplication and inversion multiplication of the element of in the underlying finite field f2m whose characteristic is two represented by the two basis of optimal normal basis and polynomial basis. we make improvements to the fast algorithm of the polynomial basis multiplication by hankerson and base on the experiments, we describe the properties and compare the advantages of the multiplication and inversion multiplication of the elements in f2m field under optimal normal bases and polynomial basis. results concluding from the study car be used as references in the realization of the elliptic curve cryptosystem ; fifthly, we overview the current fast algorithm of point multiplication, improve the fix base point comb algorithm, advance the speed of the whole system and remark the advantages and disadvantages of the popular algorithms based upon the experimental datas ; sixthly we realize the algorithm library of elliptic curve cryptography based on the f2m. only change slightly in our algorithm library can we realize the ecdh, eces, ecdsa based onf2m of anysize ; seventhly, we realize the ecc on two secure elliptic curves, including ecdh, eces, ecdsa

    本文首先介紹並分析了橢圓曲線密碼體制的優點及研究現狀；其次研究了橢圓曲線密碼體制的基本理論；第三，分析了橢圓曲線密碼的安全性並介紹了密鑰共享，加密，數字簽名等橢圓曲線密碼體制；第四，深入研究了特徵為2的有限域f _ 2m中的元素在多項式基和最優正規基表示下的乘法運算和乘法逆運算的快速演算法，並對hankerson等人提出的多項式基下的乘法運算的快速演算法作了改進，而且在實驗的基礎上不僅分析研究了f _ 2m域中元素在多項式基和最優正規基表示下的乘法和乘法逆運算的性能，還對這兩種基表示下的f _ 2m域中元素運算效率的優劣作了比較和研究，所得的結論可供在實現橢圓曲線密碼體制時參考；第五，研究了目前流行的計算橢圓曲線標量乘法的快速演算法，同時改進了固定基點梳形法，提高了整個系統的速度，並在實驗的基礎上分析研究了流行演算法的優劣；第六，實現了基於f _ 2m的橢圓曲線密碼體制的演算法庫，在我們的演算法庫中只需稍微改變便能實現基於任意尺寸的f _ 2m上的ecdh ， eces ， ecdsa等橢圓曲線密碼體制；第七，實現了兩條安全橢圓曲線上的橢圓曲線密碼體制，包括ecdh ， eces ， ecdsa 。
  2. The modern robust design detailed the robust design based on engineering model, which explained the specific design process, the whole process from founding system model to solving it. it obtained the optimum combination of parameters and the maximum manufacturing errors, using fuzzy comprehensive judgment to dispose the problem of many targets, handling the design results by fuzzy probability to increase the reliability of the design. in the end, there supplied an example, the optimization design of a long distance hydraulic cylinder to interpret the specific design process, achieving its optimum combination and the maximum manufacturing errors, and verifying the practicability of the design results by the method of fuzzy probability analysis

    在第二部分的基於試驗設計的穩健設計中，先對傳統的穩健設計，即三次設計（功能設計、參數設計及容差設計）的設計過程及原理進行了分析，指出了傳統穩健設計法中的不足，即沒有充分利用數字計算機的強大優勢；對于多因素多指標的設計，試驗周期長、計算復雜等造成設計周期長、成本高、效率低等缺點提出了改進的措施，即將虛擬現實技術應用於傳統的穩健設計中，通過模糊數學的方法（模糊綜合評判）來處理設計中的多指標問題，使設計達到事半功倍的效果。
  3. Based on the classification of images, this paper gives out four digital image steganography techniques which have good conceal effect, including low - three - bits hiding strategy, odd - even of hypo - low bit hiding strategy, deviation of adjacent - field hiding strategy and self - adaptive deviation of adjacent - field hiding strategy. on digital watermarking aspect, this paper gives two blind watermarking strategies which have good conceal effect and high robustness, they are single - watermarking strategy based on minimal - value exchanging and multi - watermarking strategy which hides the same watermark copy on the different parts of an image

    在對圖像進行了分類的基礎上，本文給出了四個具有較好掩密效果的數字圖像隱寫策略，包括低三位隱藏策略、次低位奇偶策略、鄰域方差策略和自適應鄰域方差策略；在數字水印方面，提出兩個掩密效果好且魯棒性較高的數字圖像盲水印策略，分別為基於最小值交換法的單一水印策略和嵌入同一水印多個副本的多水印策略。
  4. However, studying chinese calligraphy should start with the official script is put forward, and the reasons is expounded from the following five different aspects : official script is relatively easy to study ; the construction of official script is typical ; and the obviously studying achievements are beneficial to improving one ' s interest and enforcing one ' s confidence, etc. meanwhile, by combining the teaching experience, three steps of studying official script, such as studying strokes, paying attention to construction of characters, and imitating the model of calligraphy is presented

    提出了初學書法應從隸書開始的觀點，並從5個方面? ?隸書用筆相對楷書易學，隸書呈扁平結體和字距寬，行距窄的章法非常典型，隸書用筆中的一波三折對學習書法十分重要，學習隸書進退自如，習隸易見效有利於提高學習興趣增強自信心? ?進行了較深入的論述；同時，結合作者多年從事書法教學的實踐，提出隸書學習「先學筆劃、次講結構、再臨碑帖」的教學安排。
  5. The model of the inverted pendulum is : as an equipment, low cost, simple machinery, easy to perform all kinds of controls in simulation and digital ; as a controlled object, quite complex, high orders, instability, non - linearity, strong coupling system. we can keep it stable through some control method

    倒立擺的典型性在於：作為一個裝置，其成本低廉，結構簡單，便於模擬，數字實現不同方式控制；作為被控對象，又相當復雜，是高階次、不穩定、非線性、強耦合系統，只有採取行之有效的控制方法方能使之穩定。
  6. The results indicates that the cubic logarithm polynomials can accurately reconstruct the raw thermal images in the experiment, and can effectively suppress the interference to defect recognition caused by random noise and uneven heating in the pt testing of composite laminates ; the digital images from data reconstruction have clearer defect display or higher defect resolution than the raw thermal images, and the quadratic coefficient image of cubic logarithm regression shows the highest snr

    結果表明利用三次對數多項式回歸即可精確地重建本次實驗的原始熱像，同時能有效地克服復合材料層壓板脈沖熱像檢測中隨機噪聲和加熱不均效應對缺陷識別的干擾；經過數據重建后所作的數字圖像比原始熱像有更高的缺陷顯示度或分辨力，其中以三次對數多項式回歸公式中的二次項系數所作的數字圖像的信噪比最大。
  7. From theoretical analysis, we know the existing demodulation methods have limitations as following : one is that the subtraction of the two signals frequencies will display as the result of demodulation when we demodulate two time - domain adding signals without modulating information ( fault information ) ; the other one is that aliasing phenomenon will occur as a result of getting absolute value, detection or square in the process of generalized demodulation analysis, such phenomenon will result in some superfluous frequency composition on the frequency spectrum, which will puzzle the detec tion of mechanical vibration. if the sampling frequency is selected from a suitable range, the aliasing phenomenon will be avoided ; the last one is that aliasing frequencies will be produced in zoom demodulation analysis because this algorithm cannot employ digital low - pass filtering to avert the folding frequencies of higher harmonics in the process of zoom sub - sampling

    現有的解調分析方法存在以下三種局限性：將不包括調制信息（故障信息）的兩時域相加信號，也以其頻率之差作為解調信號而解出；廣義檢波濾波解調分析中，由於取絕對值、檢波或平方過程可能產生混頻效應，在解調譜中表現為無法分析的頻率成分，並由此推導出避免這種混頻現象的采樣頻率的選取范圍，從根本上避免此類誤診斷的產生；幾種細化解調分析新演算法中，因為無法在細化分析的選抽時進行數字低通濾波，有可能會出現調制頻率的高次諧波成分發生頻率混疊而反折到低頻部分的現象。
  8. By analyzing the refraction 、 reflection process of fault transient current traveling wave of high voltage and characteristics of refraction 、 reflection coefficient systematically, a new fault location method of single ended traveling wave is presented. it can not only identify the reflection wave for fault location efficiently, but also not be affected by the structure and length of line. fault earthed resistance 、 fault type 、 system impedance and can locate fault in adjacent areas accurately

    論文深入地分析了高壓線路故障暫態電流行波的波折、反射過程以及折、反射系數的特點，提出了新的單端行波故障測距方法，它不僅能夠有效地識別出測距所用的反射波，而且幾乎不受線路結構、長短、故障接地電阻、故障類型、系統阻抗的影響，在近區仍可以準確地進行測距；同時模擬阻波器的特徵，設計了低通數字濾波器，對通過了低通數字濾波器的暫態故障電流行波再次進行小波分析，並利用本文提出的單端行波故障測距方法進行故障定位，結論是所提出的測距方法在實際應用中仍是有效的。
  9. The project is to develop the 100mhz wideband digital storage oscilloscope ( wdso ) ， typical performance character : input signal - 3db bandwidth is 100mhz, real time sampling frequency is 20msa / s, equivalent sampling frequency is 10gsa / s, resolution is 8bits, dual signal channel, and delicacy is 5mv 5v div per channel ， time sweep velocity is 2. 5ns - - 5s div 。 so the project is provided with higher performance - to - price ratio, stronger competitive capacity in market and widest applied foreground at the area of wdso

    本次課題的具體目標是實現100mhz帶寬的數字存儲示波器正樣機的研製，具體主要性能指標達到最高實時采樣率20msa / s 、等效采樣率10gsa / s 、被觀測信號3db模擬帶寬達100mhz 、采樣數字解析度8bit ；雙通道，幅值靈敏度： 5mv 5v div ，掃速2 . 5ns - - 5s div 。該方案具有較高的性價比，較強的市場競爭力和廣闊的應用前景。
  10. First, educating the students " sense of language to improve their comprehension to language literalness, develop their cognitive ability, and combine the abstract thought with the visual thought, thereby to educate their thinking ability. second, according to the actual circumstance of the vocational senior high school students, to practice training of level of thinking from low to high : to learn - to think, to ask - to judge, and availably educate the thought ability of students, and expand the thought profundity ; third, reverse the deviation that appears in students " study motivation and interest. in the actual teaching work, stress the practicability and pertinency of teaching, and the visualize and gusto, regular their study motivation, stir up the interest of their study, then attain to develop the purpose of the thought

    首先，要培養學生的語感能力，以提高職高學生對語言文字的理解能力，發展他們的認知能力，使抽象思維與形象思維結合起來，從而培養發展學生的思維力；其次，根據職高學生的實際情況，有步驟地實行由低到高的思維層次訓練：學-思、問-辨，這樣可以有效地培養學生的思維能力，開拓思維深度；再次，盡力扭轉學生學習動機、學習興趣出現的偏差，在實際教學工作中，講求實用性與針對性，講求教學的形象性與趣味性，端正職高學生的學習動機，激發他們的學習興趣，以達到發展思維的目的。
  11. In order to cope with errors aroused by a long sudden idle period, an adaptive coefficient to avoid overestimate the online idle period has been provided. on the other hand, timeout policy is taken to reclaim shutdown in the underestimate situation. experimental results show that this algorithm outperforms other advanced dynamic power management policies because of less wrong shutdown times and wrong waiting times

    將該方法應用於ibm硬盤的數字電路低功耗設計方浩研究功耗管理，實驗表明它能適應各種模式的應用環境，在功耗管理時能減小錯誤關閉次數和錯誤等待次數，大大減小了由於錯誤關閉和等待浪費的功耗，因而具有較高的功耗管理效率。
  12. The instrument has been applied to spot construction for the first time on the construction site of commanding and dispatching center of channeling water from huanghe river in wanjiazhai of shanxi. digital and sensing technology is employed to accomplish the dual open loop control over the tension of prestressing tendon. because the traditional technology of prestressing construction is improved, construction accuracy and efficiency are greatly rais ed

    智能預應力張拉儀是能與普通張拉設備配套重復使用的智能化顯示與控制儀表，是本課題組研製的專利產品，本文首次在山西省萬家寨引黃工程式控制制調度中心施工現場將智能預應力張拉儀應用於現場施工中，利用數字傳感技術實現了對預應力筋張拉的雙重開環控制，改進了傳統的預應力施工工藝，大大提高了預應力施工的精度和效率，從而有效地避免了工程事故的發生。
  13. Secondly, in order to improve the effective of machining process, for the tool - path planning, this system come up with a way which both tool arm coordinate the movement in the same time, and used the process pattern of move toward opposite side and cutting in row, avoided the cutting tool interference effectively ; for this tool - path this paper use the way of making the cutter contact data by the second development of solidworks, and gained the cutter location data through the interference check

    其次，為了提高磨削效率，在刀具路徑規劃方面，採用了雙刀協調運動、相向走刀加工的加工方式，採取變形的「之」字形走刀模式，從而有效的避免了刀具干涉，提高了加工效率。並針對上述的加工方式，對刀位軌跡生成演算法進行了研究，根據機構的特性，基於截面法生成刀具軌跡，通過solidworks的二次開發來獲得牙齒模型的三維表面數據，再利用干涉檢查生成無干涉刀位點數據。
  14. It is the first time to applying the digital audio amplifier technology to the amplification in rf field. a high efficiency linear am amplifier is developed successfully. it is a useful exploration

    本課題首次將數字音頻功率放大技術引入射頻功率放大領域，成功實現了高效率線性功率放大器，在技術上做了有意義的嘗試。
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