提前量曲線 的英文怎麼說

中文拼音 [dīqiánliángqūxiàn]
提前量曲線 英文
lead curve
  • 提 : 提動詞（垂手拿著） carry （in one's hand with the arm down）
  • 前 : Ⅰ名詞1 （在正面的） front 2 （次序在先的） first; top 3 （過去的; 較早的） ago; before; preceding...
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 曲 : 曲名詞1 （一種韻文形式） qu a type of verse for singing which emerged in the southern song and ji...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 提前 : 1 （往前移） shift to an earlier date; move up （a date）; bring forward; advance 2 （事先） in a...
  • 曲線 : [數學] curve; bight; bought; profile; net曲線板 french curve; irregular curve; curve board; splin...
  1. The first part is introduction, presenting this paper ' s structure, research background and so on ; the second part introduces some issues relating closely to risk, the tangency point between indifference utility curve and efficient frontier is the optimal portfolio ; the third part explores risk evaluation, this part begins with some risk factors affecting security ' s price and return, then analyzes the methods evaluating degree of risk, finally, introduces a more popular method of risk evaluation - - var ; the forth part expounds risk management, this part studies some risk control strategies correspond to specific risk mentioned above ; the last part put forward some advice contrapose issues existed in risk management in china

    第一部分為緒論，介紹本文的相關背景；第二部分是與風險相關的幾個問題，等效用曲線與有效邊界的切點是投資者選擇的最佳投資組合；第三部分是風險衡量，該部分首先分析了證券與股票所面臨的風險，然後對債券和股票分別介紹，最後介紹了目前比較流行的風險衡量方法? ? var方法；第四部分為企業風險管理，這里針對上文所述的風險提出相應的風險控制策略；第五部分針對目前我國風險管理中存在的問題提出了幾點建議。
  2. 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 。
  3. Consequently, to optimize the appearance and structure design of retaining walls, especially to have a deeper understanding of the bearing mechanism of various retaining walls and select city retaining wall type reasonably are of great engineering significances and potential economic effect. based on a thorough analysis of the character and mechanism of city - retaining - wall structures, the design theories, construction technology, new wall types and development tendency are deeply discussed. besides, the characteristics of various types of city retaining wall are discussed, and the usual methods for earth pressure calculation are summarized

    本文在綜合分析目前常用城市擋土結構的特點及其受力特性等基礎上，針對一般擋土墻設計理論、施工技術、新型結構以及未來的發展趨勢進行了深入探討，論述了城市擋土結構的特點，並對常用土壓力理論進行了綜述，介紹了城市擋土墻常見的類型，並介紹了常規的設計理論和方法；通過分析比較，優選出錨桿擋土結構和砌塊式擋土結構，並從錨桿錨固原理出發，結合工程實踐和大量現場試驗、對錨桿的抗拔承載力進行了深入研究，提出了用調整雙曲線模型法計算錨桿抗拔承載力的方法，對土壓力計算方法進行了探討，對其設計計算方法進行了研究。
  4. The non - dimensional relationship of load - bearing capacity is put forward, the virtue of which is that, given the same ratio of limb length to thickness, one curve presents many kinds of section dimensions and concrete strengths, thus the quantity of present relation curves is greatly reduced

    提出了無量綱形式相關曲線，無量綱的優點是當柱截面長、厚比相同時，一條曲線可以代表多種截面尺寸和混凝土強度，使目前的有量綱相關曲線數量大大減小。
  5. Waxes for sealant : this series product divides the wax for sealant tape and the wax for container primer, the former can provide the reasonable molecular weight distribution and the normal and isomerism proportion, obviously enhances the sealant tape the anti - oxidized ability ; latter has gentle viscosity - temperature curve, which can improve products ' adhesion, sagging property and bears the weathering ability

    密封膠用蠟系列：本系列產品分密封膠條用蠟和集裝箱底漆用蠟，前者能提供合理的分子量分佈和正異構比例，明顯提高膠條的抗氧化能力；後者具有平緩的粘溫曲線，改善目的產品的附著性、流掛性能和耐侯能力。
  6. There are a lot of work been done to the yield curve up to date, but the research can not keep up with the development of bond market. under such circumstances, this dissertation wants to do some researches focusing on the yield curve. first, the study observes the figures of yield curves of china bond during different periods and qualitatively analyzes how they have developed to such figures

    研究思路:本研究首先定性考察了不同時期我國國債收益率曲線的形狀和成因，接著通過綜合以前的研究並結合收益率曲線的散點圖對不同時期收益率曲線分別建模，利用模型定量研判市場利率走勢，並對遠期利率作出預測，最後根據實證研究結果對國債投資和管理提供了一些結論和建議。
  7. Ecc is considered to be an alternative to rsa. this article provides a brief description of rsa public key cryptography and the associated knowledge, in particular introduces non - supersingular elliptic curves e which is established on the finite field fp with p > 3, in - depth studies present existed scalar multiplication, further proposes an improved signed sliding window algorithm on ecc under the mixed coordinates, the improved algorithm compatible the advantage of the naf, has the least number of zero window and avoid a large number of inverse operation, successfully reduce scalar multiplication calculation

    本文闡述了橢圓曲線及其相關知識，特別說明了建立在有限域fp （其中p是大於3的素數）上的非奇異橢圓曲線e ，深入研究目前已有的各種標量乘法，由此提出了橢圓曲線密碼演算法在混合坐標下改進的帶符號滑動窗口演算法，該演算法兼容了naf方法的優點，擁有最少數目的非零窗口數，又避免了域元素上的大量求逆運算，較成功地減少了標量乘法計算量。
  8. The methodology adopted by most existing cam / cnc systems, which uses huge amount of linear segments to approach the original shape and make linear interposition increases the cost of memory size and communication work of the cnc system tremendously. a new approach based on cubic polynomial and b spline interposition to rebuild the cam generated tool path under real time condition is presented in the paper. applications on cnc machine tools showed that the presented approach improves the machining accuracy and increases the cutting speed significantly

    目前大多數cam / cnc系統採用大量小直線段逼近原始曲線和直線插補的做法，只能獲得零階連續的走刀軌跡，逼近精度低，不能保證高速加工運動的平穩性，因而加工精度、光潔度和加工速度都難以提高；由小直線段構成的nc代碼數據量龐大，也增加了數控系統在內存容量和數據傳輸方面的成本。
  9. By analyzing the scalar velocity bound curve and combining distribute of acceleration limit, a time - optimal control algorithm was designed. the results of experiments show it can make full use of the capacity of motor while realizing the stability and positioning accuracy of system, solving the problem of time - optimal control

    通過對標量速度邊界曲線的分析，結合加速度極限分佈情況，設計了一種在特定軌跡約束下機器人時間最優軌跡規劃演算法，以在保證系統穩定性和定位精度的前提下，充分發揮電機的性能。
  10. The method is proved to be a practical way of implementation with expected precision. a new type device is presented to measurement of the magnetic properties of the single sheet, after a detailed account of the parameter of magnetic characteristic and relevant measurement

    在詳細介紹磁性材料的特性的相關參量，及交流磁化曲線和磁滯回線的測量方法和磁損耗的測量方法后，提出對于龜機鐵芯磁性能測試不僅要進行整體測試，應在疊鉚前對單片硅鋼片測試。
  11. In this dissertation, the research trends for the problem have been introduced ; the ‘ dim ’ and ‘ point ’ has been strictly defined in mathematics from machine vision and human vision ; the ideal clutter suppression system based on clutter predication and the realization and evaluation of evaluation index has been studied, in succession the clutter suppression technologies have been researched. firstly, the classic nonparametric algorithm has been analyzed in detail and systematically, for it ’ s weakness that it cannot remove the non - stationary clutter ideally, kalman filter algorithm for clutter suppression in 2d image signal has been built. secondly, fast adaptive kalman filter is presented based on fast wide - sense stationary areas partition algorithm : limited combination and division algorithm based on quarti - tree algorithm, new taxis filter route algorithm which can break through the limitation of the necessity of pixel neighborhood of 2d filter and laplace data model with two parameters which is perfectly suitable for the residual image of kalman clutter suppression

    首先分析了經典的非參數法，對於四種具有代表性的核，從前述的三個性能評價方面做了分析和對比，指出了其速度快的優點和對非平穩圖像適應性差的弱點，針對非參數法的弱點，重點研究了對非平穩圖像適應良好的卡爾曼雜波抑制技術:建立了非平穩圖像的類自回歸模型，在此基礎上建立了二維卡爾曼濾波基礎的兩個方程:狀態方程和測量方程;建立了非平穩圖像準平穩區域快速劃分演算法:基於四叉樹法的有限分裂合併演算法;二維空間的基於k排序的濾波路線演算法，突破了空域濾波路線上區域相鄰的限制;在這些研究的基礎上實現了快速卡爾曼估計，實驗驗證了該方法相對逐點卡爾曼估計可以提高運算速度三倍左右;雜波抑制結果表明傳統的高斯性檢驗並不適合卡爾曼估計后的殘余圖像，由此建立了殘余圖像的雙參數拉普拉斯模型，實驗表明其可以完好的吻合殘余圖像的概率密度曲線。
  12. Turbojet engine is selected as propulsion system according to the practical situation. the work of this part ranges from design to characteristic analysis. the characteristic curves of engine in various situation are shown, which provides preparation for trajectory computation

    並對渦噴發動機從設計到特性分析做了大量的工作，給出發動機在不同工作狀態下的特性曲線，為進一步研究彈道設計提供了前期的準備工作。
  13. Finally, this paper analyzes and studies tracking errors and shooting prediction which are calculated by the fire - control system, and brings forward the solutions for reducing errors by comparing with experimental curves and the tracking precision may be increased efficiently

    最後，本文對火控模擬系統的跟蹤誤差和射擊提前量進行分析研究，通過對比分析變化曲線，提出了幾點減小誤差的解決措施，有效提高了跟蹤精度。
  14. Abstract : in view of the general phenomena of insufficient resource utilization and inefficient unit operation, an optimal method of power plant economic operation which is fit for the operation characteristic of the small hydropower station has been presented in this paper. on the basis of actual power features of units, this method avoid errors for curve transformation and imitation as well as bring the indefinite factor arising from different combination way of diversion and tail - race system of hydropower station. it makes the calculation result more accurate and reliable. proved by practical application of the hydropower station, this method not only improves the technique content of hydropower station manage, but also promotes clearly economic benefit

    文摘:針對目前已建成的小型水電站資源利用不充分，機組總體效率較低的現象，提出了一種適合小型水電站運行特點的廠內經濟運行優化方法，該方法以機組的實際動力特性為依據，既避免了由於曲線轉換和擬合帶來的誤差，又可以將電站引水系統和尾水系統由於不同組合方式所出現的不確定因素納入優化設計之中，使計算結果更加準確可靠.經實際電站的應用表明，該方法不僅可以提高電站管理的技術含量，而且使電站的經濟效益有明顯的提高
  15. According to the research and simulation the measured caloric curve has been discussed and some suggestions for further investigation of nuclear temperature were pointed out

    同時還根據理論模擬的結果討論了當前得到的核物質量熱曲線中可能存在的問題，提出了進一步開展核物質量熱曲線研究中溫度測量的一些措施。
  16. Secondly, the study develops different mathematical models according to different periods by synthesizing previous research and observing the track of scatter plots of yield curves. thirdly, it quantitatively predicts the trend of interest rate and forward interest rate by these models. last but not the least, this study come to some conclusions and present some suggestions according to the empirical research

    本研究首先定性考察了不同時期我國國債收益率曲線的形狀和成因，接著通過綜合以前的研究並結合收益率曲線的散點圖對不同時期收益率曲線分別建模，利用模型定量研判市場利率走勢，並對遠期利率作出預測，最後根據實證研究結果對國債投資和國債管理提供了一些結論和建議。
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