iteration step 中文意思是什麼
iteration step
解釋
迭代步-
On each step of iteration, no trigonometric function is used, and only four multiplications for cardioid curve are required
迭代過程中避免了三角函數的運算，每步僅需4次（心臟線）乘法運算。 -
Thirdly, from the idea of locally linear approximate, another tangent - plane algorithm is presented for the distance between the convex nurbs surfaces. the critical step is the construction of the support mapping by gjk and lc to search for nearest points, and emphases are laid on dealing with isotropic cases and choosing initial iterated points. it is also proved that no isotropism during iteration would take place if initial iterated points are positive points
切平面法是運用gjk和lc構造支撐映射的原理而設計的一個搜索近點對的迭代法，著重給出了迷向情況的處理和初始迭代點的選取方法，並證明了只要將初始迭代點取為陽點，就不會出現迷向情況。 -
Moreover, based on routine research method on abutment stability, non - linear finite element shear strengthes reducing by step iteration method is put forward in this paper, which is also applied in the analysis of abutment stability of tengzigou arch dam successfully
在此基礎上，介紹了非線性有限元強度折減迭代解法，探討了復雜地基上拱壩整體穩定安全度的評價方法，並應用於藤子溝拱壩穩定安全度評價。 -
And lager step size could be used in the integral process. based on the gear method and the differential - algebraic equation simultaneous solution method, the newton iteration formula is derived in this thesis
本文根據電力系統全過程動態模擬軟體的基本積分方法（ gear法）和微分一代數方程聯立求解法，構造了gear法聯立求解微分方程組和代數方程組的牛頓迭代公式。 -
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。 -
It is posssible that the trust region subproblem needs to be resolved many times before obtaining an acceptable step for the traditional trust region method, and hence the total computation for completing one iteration might be expensive
對于傳統的信賴域方法，要獲得可接受的迭代步可能要通過重復計算多次信賴域子問題才能獲得，因此每完成一次迭代的整個計算會比較大。 -
The iteration formula and determination of iteration step are set up according to a priori information of rock and concrete
建立了考慮先驗信息的修正高斯-牛頓演算法的迭代格式和迭代步長的確定方法。 -
On one hand, from the technique of constrained least squares and limited energy of additive noise, an effective restored approach by adopting regularization method to overcoming ill - posed problem, solving an equation with a single variable, and using space iterative algorithm is proposed ; on the other hand, aiming at the restoration of blurred image, another effective restoration approach based on least - square algorithm is also proposed in this paper. this method firstly adopts increment iterative algorithm to improve convergence and meanwhile applies regularization technique to overcome ill - posed problem. in the computations, the regularized parameter has its adaptive character, which can be determined in terms of the restored image at each iteration step therefore automatically correct to the appropriate value
一是從約束最小二乘出發，在加性噪聲能量有界的前提下，採用正則化方法來克服病態問題，通過解一個單變量方程，並利用空域迭代運算實現了一種有效的圖像復原;二是針對模糊圖像的復原問題，從最小二乘演算法出發，採用增量迭代的方法改善演算法的收斂性，同時結合正則化技術克服問題的病態性質，並引入自適應的正則化參數，使其與圖像復原的迭代運算同步進行並自動修正到最優值。 -
The spatial member - story model is adopted as the dynamic analysis model for base - isolated structures by considering the isolation device as a special element, the dynamical equation is established, time - history analysis is conducted by step - by - step integration and iteration methods, and program of dynamic analysis on base - isolated structures ( dabis ) which can be used for analysis on multi - dimensional and lateral - torsional coupled seismic response of base - isolated structures is worked out
將隔震裝置作為特殊單元，採用空間桿系?層模型作為基礎隔震結構動力分析模型，建立其運動方程，採用逐步積分法和迭代法進行時程反應分析，編制了可進行基礎隔震結構多維及平?扭耦聯地震反應分析的基礎隔震結構動力分析程序dabis 。 -
In chapter two, we put forward an iteration ( 2. 1. 1 ) in which the first derivative and the first divided difference are only calculated in each step
1 . 1 ）與另兩個也僅含一階導數和一階差商的演算法及兩步newton迭代的收斂階 -
For problems whose objective function or constraint functions have sharp curves on their contour maps ( such as the rosenbrock ' s function which has banana shape contours ), monotonicity may cause a series of very small steps, causing a huge number of iteration to reach their solutions. by using the nonmonotone technique, we get the sequence of successful interative point which should make the objective function mono - tonically decreasing. hence, we use both trust region strategy and line search technique and make each iterate generate an acceptable trial step in interior feasible set as next interative point
我們利用非單調技術得到使目標函數非單調下降的迭代點，因為非單調克服高度非線性化函數的求解問題，從而避免了只使用單調搜索在「峽谷」現象局部最優解被卡的情況，我們用信賴域策略和非單調線搜索技術相結合的方法，使演算法產生的迭代步落在可行域內點，同時又在信賴域內滿足接受準則。 -
For each curvature incremental step, a deformed curve in the correspondi ng state can be determined for the column. through the iteration for all incremental steps until the solution is convergent, the complete load - deformation relation can then be obtained
對各曲率增量進行反復迭代，直至得到收斂解，就獲得了長柱從加載到破壞的全過程變形曲線及荷載-撓度曲線。 -
The final nonlinear algebraic equation set is solved using the step - by - step newton - raphson iteration and the deformed curves for the corresponding state of each load increment can be determined
對應每個荷載增量，可求得鋼管混凝土拱在相應狀態下的變形曲線。對各荷載增量進行反復迭代，直至得到荷載的極限值。 -
Furthermore, the newton method can relax the lindt of step size due to convergent l [ ~ condition, llhp * fi ] < l, for the simple iteration method that is used in ll lyi ] <, for the simple iteration method that is used in, some general electric - mechanical transient simulation programs
同時，牛頓迭代方法對步長力的限制較寬，可以採用較大的步長，從而克服了目前電力系統機電暫態程序中通常採用的簡單迭代演算法求解微分一網路方程，受迭代收斂條件的限制，積分步長h受限的問題。 -
So the sta ( static timing analysis ) step and the iteration between synthesis and p & r ( place & route ) were integrated in the dsm design flow
因此，需要在深亞微米設計流程中加入靜態時序分析環節，以及邏輯綜合和布局布線之間的迭代過程。 -
Instead, there needs to store only the original coefficient matrix, some auxiliary matrices for the preconditioner and several vectors in the iteration methods. further, the core of the iteration is the matrix - vector multiplication and the solution of the auxiliary equations corresponding to the preconditioner. if the solution of the auxiliaries spend not very much, the computational cost in each iteration step will be very cheap, due to the fact that the sparsity of the matrix can be exploited sufficiently
與直接法相比，迭代法只需存儲原系數矩陣、對應于預處理的幾個輔助矩陣與少量幾個向量，且迭代中除求解輔助線性方程組外，其餘的計算主要是稀疏矩陣與向量乘積，從而能充分利用稀疏性減少計算量，但迭代法的收斂速度一般與系數矩陣的譜分佈有關。 -
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 -
Because of need of much iteration in each time step while carrying on nonlinear numerical anaiysis, the incremefltal equilibrium formulation and its equivalent iterative equation of the constant average acceleration newnark method are deduced
鑒于橫縫非線性數值分析需要在每一時間步內迭代多次，推導了newmark常加速度增量平衡方程及其等效迭代格式。 -
A new random phase - shifting correction algorithm is presented in this paper on the basis of five - step phase - shifting. it can directly solve the value of phase - shifting errors without solving phase. meanwhile, the new algorithm can greatly decrease the iteration number and calculation without depressing the measurement accuracy
本文的重點在於提出一種新的隨機相移誤差的校正演算法，在傳統五步相移的基礎上不需要求解相位分佈，通過合理的近似處理可以直接求解相移過程中存在的隨機相移誤差，在保證精度的情況下，能大大減少迭代次數和計算量。 -
Some improvement are made on the ground of direct method, such as adding the outer iteration and adopting dynamic convergent criterion to accelerate it, introducing the iteration step factor, adding the flux criterion to main iteration, etc. compared with the other two computation methods, the modified direct method has the advantage of wide calculational range and high precision
在直接法的基礎上作了幾點改進，如引入參數使得主迭代中增加了外迭代並採用動態收斂判據加速迭代過程，引入步長調整因子f ，給主迭代收斂條件增加了通量判據等。
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