safety curve 中文意思是什麼
safety curve
解釋
安全曲線-
Abstract : the derailment safety evaluation test and evaluation standard f or railway cars running on curve in poland are described
文摘:介紹波蘭鐵道車輛在曲線上運行的脫軌安全性試驗及評定標準。 -
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 。 -
In this thesis, the characters of the high - speed maglev transportation safe speed protection system are introduced firstly in chapter one. subsequently, the realization of the speed curve watching function that is one of the core safety functions of the maglev train ' s operation control system is discussed carefully in chapter two. in chapter three the arithmetic of the maglev train ' s safe speed curves is discussed, including the safe braking speed upper limit curve, the safe braking speed lower limit curve, the safe speed upper limit curve and the range of the maglev train ' s safe operating speed
本文首先綜述了磁浮高速鐵路系統安全速度防護系統，第二章對運行控制系統的核心防護功能?速度曲線監控功能的實現作了詳細的論述，第三章則給出了速度曲線監控功能中磁浮列車安全速度防護曲線的演算法，包括磁浮列車安全制動上限速度防護曲線、磁浮列車安全制動下限速度防護曲線、磁浮列車安全速度防護上限曲線和高速磁浮列車安全運行速度的范圍。 -
Signature and verification systems, such as ecdsa etc, the discuss about key exchange systems such as deffie - hellman systeme, etc. this thesis also discussed several applications and information safety products of the elliptic curve cryptosystems at the finite field too, such as digital signature, the group signature, the application in the smart card
Ecdsa等簽名驗證體制的選取， deffie - hellman等密鑰交換體制的研究。論文也討論了基於有限域上橢圓曲線公鑰密碼系統的若干應用和信息安全產品，如數字簽名，組簽名，在智能卡中的應用。 -
The difficulties of elliptic curve discrete logarithm problem and safety of 3 - des encryption is analyzed in detail. this cryptographic system applies a key exchange scheme based on ecc and trusty data encryption algorithm
文章最後分析了該密碼系統的安全性，對橢圓曲線離散對數問題的難解性以及三重des加密演算法的安全性作了較詳細的分析。 -
For operational safety, a train must go through a curve on a slanting surface similar to a car negotiating a bend
基於安全理由，列車必須在傾斜的路面才能拐彎，情況與汽車拐彎時一樣。 -
3. based on the assumption of general slip surface, a general formula of safety factor of slope is presented in which the forces exerted on the slices exactly satisfy the equilibrium condition. using the method the chapters introduced to search critical slip surface, and proved by examples, this method is more reliable, and can search, simulate the critical slip curve
推導出了滑動面為任意現狀，邊坡體內作用有各種荷載且滿足力平衡條件下的邊坡穩定系數計算公式（在進行條分計算時，假定條間僅有水平方向作用力，豎向條間剪力為零） ，利用本文提出的遺傳進化搜索方法搜索邊坡最危險滑動面。 -
However, since the cwb within the criii is a tunnel, it is important to avoid a sharp curve and to maintain a minimum sight distance for driving safety
的中環灣仔繞道是一條隧道，因此為了安全駕駛起見，除了要避免急彎外，也要維持最短的視距。 -
With the fast development of internet, the problem of information security looks increasingly important. then on the basis of safe and high efficient encryption algorithm, some related network protocols are produced. compared with some other public key cryptosystems, elliptic curve cryptosystem ( ecc ) has many merits, so the special attention is paid to it by the network safety specialist in the world. ecc is widely argued because of no standard source code. in this article, the research is on the ecc theory and the implementation of it is also done
隨著網際網路的快速發展，信息安全問題顯得日益重要。相關網路安全協議應運而生，而它們的基礎都是安全高效的加密演算法，橢圓曲線加密系統與其他公鑰加密系統相比有許多優點，受到國內外安全專家的極大關注。可是橢圓曲線加密系統（ ecc ）並無公開的標準源代碼，還處于「百花齊放，百家爭鳴」的局面，文章對于安全的橢圓曲線加密系統做了理論研究和實現工作。 -
According to the supply system composed by parallel connection water pump, many kinds of operation proposals in a single pump were put forward to provide the greatest possible flow on both sides of the demarcation point in the scope of the flux changes ; identified the system of pumps, electromotor, speed governor imitate method of characteristics curve of the power device and its rotating speed, efficiency, energy consumption calculation under different condition ; the analytical methods used for the operational plan for comprehensive evaluation of the economic and safety and optimal results
摘要針對由並聯水泵組成的供水系統，提出了在以單泵可能提供最大流量為分界點的兩側流量變化范圍內具有多種運行方案；確定了在不同工況下，該系統中水泵、電機、調速器特性曲線的擬合方法及其各動力裝置中轉速、效率、能耗的計算式；採用解析的方法對各種運行方案進行了經濟性和安全性綜合評價，並給出最優結果。 -
At light rail, the standard width of a platform gap is 110 mm. at some stops where there is a curve, the platform gap is normally wider but still within safety limits. examples of these are shek pai stop, kei lun stop and lam tei stop
現時輕鐵月臺空隙的標準闊度為一百一十毫米，由於輕鐵列車行走時會有擺動，因此在月臺與列車之間必須預留足夠空間，而一些位於彎位的月臺，例如石排站、麒麟站及藍地站，月臺空隙可能較闊，但仍然是符合安全標準。 -
The highest safety strength of private key per bit in the public - key cryptography systems is the elliptic curve cryptography at present. under similar secure conditions, the ecc has the advantages such as : less computation amounts, shorter length of private key, smaller storing and bandwidth. moreover, it has been declared as standard documents adopted by many international standard institutions and regarded as the most universally used public key system
橢圓曲線密碼體制是目前公鑰體制中每比特密鑰安全強度最高的一種密碼體制，在相同安全強度條件下，橢圓曲線密碼體制具有較短的密鑰長度，較少的計算量、存儲量、帶寬等優點，而且橢圓曲線密碼體制已經被許多國際標準化機構作為標準化文件向全球頒布，被認為是下一代最通用的公鑰密碼系統。
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