second iteration 中文意思是什麼
second iteration
解釋
二次迭代-
Abstract : based on the principle of mininmum potential and using rayleigh - ritz method, the geometric non - linear analysis of higher bridge piers was solved in this paper. the new concept of equivalent horizontal force proposed by the author may be casily to calculate the second effect, which was produced due to the vertical forces and resisted by the piers and rubber pad bearings incorporately. the simple formula in this paper are applicable to calculate by hand, understood clearly without computation of successive iteration, higher precision and graspable easily for the disigmer therefore it has the practical significance
文摘:根據最小勢能原理，用瑞雷-里茲法解決了高橋墩的幾何非線性分析問題；其次，提出了等效水平力的新概念，可以方便地解決橋墩和板式橡膠支座聯合抵抗垂直力所產生的二次效應問題.筆者提出適合於手算的簡便計算公式，概念明確，勿須迭代運算，精度較高，易為設計人員掌握，因此具有實用價值 -
The main part of this hybrid algorithm is a chebyshev iteration which applies chebyshev polynomials to act on initial vectors and makes the obtained vectors close to the wanted eigenvectors ; the second one is the preconditioning subspace iteration method which uses a preconditioning matrix to impact the residual matrix obtained from the iteration procedure, so the distribution of eigenvalues is improved
第一個改進演算法是用chebyshev多項式加速的子空間迭代法，它是用chebyshev多項式作用初始向量，使其更接近所要求的特徵向量。第二個改進演算法是對每次迭代所得的殘余矩陣直接進行預處理以改善矩陣特徵值的分佈。 -
Second, the concept of unified modeling language is describled, and its " 4 + 1 " views ( use case view. logical view, implementation view, process view, deployment view ) are describled based on the characteristics of liquid propellant space propulsion systems. software process model, the concept of iteration and increment, the concept of software development based on risks, sysnerty software process model are describled ; software model of the study of the software of configuration analysis of liquid propellant space propulsion systems is presented in this paper using unified modeling language and synergy software process model
然後本文闡述了統一建模語言的概念，並結合空間推進系統特點分別對統一建模語言的「 4 + 1 」結構視圖（用例視圖、過程視圖、邏輯視圖、實現視圖、部署視圖）進行了闡述；闡述了軟體過程模型和迭代、增量及基於風險的軟體開發的概念以及synergy軟體過程模型；應用統一建模語言和synergy軟體過程模型建立了液體推進劑空間推進系統構型分析軟體的軟體模型。 -
The second part studies optimal pure proportional navigation ( ppn ), with time - dependent gain of navigation to maneuvering target based on proportional navigation theory. optimal gain of navigation is constant for ppn without maneuvering ; based on this, solution of time - dependent gain of navigation is given by iteration approach, and the time required for capture is given, the times of iteration is decided by comparing this time with the iteration step
對目標機動的追逃問題，考慮導航增益可為任意實數，且隨時間和初始條件改變，這一思想是建立在目標非機動的純比例導引制導規律，最佳導航增益為常數的基礎之上，利用迭代的方法，給出了時變的導航增益的求解方法，並給出了實現捕獲所需的時間，用此時間與迭代步長進行比較，判定迭代次數。 -
Non - oscillatory and non - free - parameters dissipative ( nnd ) finite difference scheme ( a total variation diminishing scheme ) with second order accuracy was adopted to solve the fluid dynamic equations, a finite rate chemical reaction model was developed to calculate ingredient producing rate, and an adi over relaxation iteration technique was used to solve the electromagnetic discretized equations
採用二階精度nnd格式求解流體力學方程組，採用有限速率化學反應模型計算組分生成率，採用交替方向隱式（ adi ）超鬆弛迭代法求解電磁場離散方程。 -
A time scale t is an arbitrary nonempty closed subset of the real numbers. in the paper, we study quasilinearization and the monotone iteration methods for second - order nonlinear boundary value problems on time scales
時間模t _ 1是實數集上的一個非空閉子集，本文討論了時間模上二階非線性邊值問題的擬線性方法和單調迭代方法。 -
The small range searching technique can correct 4 more conditions for the first iteration differential and 3 more conditions for the second iteration differential, thus improving the probability and the complexity to find collisions. the whole attack on the md5 can be accomplished within 5 hours using a pc with pentium4 1. 70ghz cpu
關于hash函數的碰撞攻擊最近幾年取得了舉世注目的成果，王小雲等提出的基於模減的差分分析方法有效地攻破了md4 ， md5 ， ripmd ， haval和sha - 0等一系列hash函數，其攻擊演算法復雜度都低於次壓縮函數運算，在一般的個人電腦上運算都可以找到碰撞實例。 -
Like i said, this is only the second iteration
就象我說的，這只是第二輪循環。 -
In addition, we study semilocal convertgent theorem of another deformed chebyshev - halley iteration family - jarratt type iteration family under the condition that the second prechet derivative satisfies p - h61der continuity
第一章cbebyshev一halley族迭代在數域上的變形1一1演算法的提出二十世紀九十年代， j . m . guti析。 -
The second iteration of the recursive member uses the single - row result set in step 3 containing
遞歸成員的第二次迭代使用步驟3中的單行結果集（包含 -
The second iteration might push the design down to identifying all of the modules and the inter - module data path mechanisms
第二個迭代則可能繼續推動設計，來鑒別所有的模塊和模塊間的數據交換機制。 -
In the second iteration, they didn t make those mistakes and probably they put in some things they hadn t thought about before
在第二輪循環中，他們沒有犯那些錯誤，並且可能放入了一些以前沒有想到的東西。 -
The second iteration featured four processors per card and up to three cards per rs 6000 to create a 4 - way, 8 - way, or 12 - way smp system
第二代rs64晶元，其特點是每個卡上有4個處理器，每個rs / 6000可以支持多達3個卡，從而可以裝備4路、 8路或12路的smp系統。 -
A energy iteration method for periodic solutions to second order strongly nonlinear non - autonomous systems is suggested
摘要給出了確定一般二階強非線性非自治系統周期解的能量迭代方法。 -
Because three systems of equations solved at each iteration have the same coefficients, so the ammount of computation are less than that of the existing sqp algorithms. under some common conditions ( such as the second order sufficient condition ) which are used in some references, we prove that the algorithm possesses not only global convergence, but also strong convergence and superlinear convergence
該演算法在每次迭代時所需解的三個線性方程組具有相同的系數，因此計算量要比現有的sqp方法有所減少；在與一些文獻平行的假設條件（如二階充分條件）下，論文證明了演算法不僅具有全局收斂性，而且還具有強收斂性和超線性收斂性 -
By using bpm, the problem is reduced from a second - order boundary value problem requiring iteration or eigenvalue analysis to a first - order initial - value problem that can be solved by simple " integration " along the propagation direction
和其他模擬方法相比， bpm將二階邊值問題簡化為一階初值問題，減小了計算的復雜性，縮短了計算時間，降低了對計算機硬體的要求。
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