iteration point 中文意思是什麼

iteration point 解釋
迭代點
  • iteration : 迭代疊代疊接
  • point : n 1 尖頭，尖端；尖頭器具；〈美國〉筆尖；接種針，雕刻針，編織針；小岬，小地角；【拳擊】下巴。2 【...
  1. Fixed point iteration for quasi - contractive mapping in banach space

    空間中擬收縮映射的不動點迭代
  2. In this dissertation, we firstly prove that any dirichlet problem is indeed equal to a voltages problem of networks. we give five solutions to dirichlet problem in two dimensions ; among these five solutions, we prove that the iteration solution and the solution of relaxations are exponential convergence, then we estimate their respective convergence rates ; secondly, we discuss random walks on general networks, prove that there is an one to one correspondence between networks and reversible ergodic markov chains ; thirdly, we give probabilistic interpretation of voltages for general networks : when a unit voltage is applied between a and b, making va = 1 and vb = 0, the voltage vx at any point x represents the probability that a walker starting from x will return to a before reaching b ; furthermore, we study the relationship between effective resistance and escape probability : starting at a, the probability that the walk reaches b before returning to a is the ratio of the effective conductance and the total conductance

    本文證明了任何邊值的dirichlet問題都可轉化為求解電路電壓的問題：給出了計算平面格點上dirichlet問題的5種方法：證明了迭代法和松馳法都是指數收斂的，並分別給出收斂速度的估計；討論了一般電路上的隨機徘徊，驗證了電路與可逆的遍歷markov鏈是一一對應的；給出了電路電壓的概率解釋：當把1伏電壓加於a ， b兩端，使得v _ a = 1 ， v _ b = 0時，則x點的電壓v _ x表示對應的markov鏈中，從x出發，到達b之前到達a的概率；進一步地，給出了逃離概率與有效電阻之間的關系：從a出發，在到達b之前到達a的概率為有效傳導率與通過a的總傳導率之比。
  3. This dissertation investigates both existence of traveling wave solutions for delayed reaction diffusion systems and lattice differential equations, and global attractor of spatially discretized fitzhugh - nagumo equations with dirichlet or neumann boundary conditions. for delayed reaction diffusion systems, the existence of traveling wavefronts in diffusive and coorperative system with time delays is provided, firstly ; the monotone iteration scheme, together with upper - lower solution technique, is applied to establish the existence of traveling wavefronts of delayed reaction diffusion systems with some zero diffusive coefficients. secondly, schauder fixed point theorem is applied to some operators to prove the existence of traveling wave solutions in a properly subset equipped with exponential decay norm, which is obtained from a pair of upper and lower solutions for delayed reaction diffusion systems with non - quasimonotoiiicity

    對于時滯反應擴散方程，我們先利用吳建宏和鄒幸福[ j . dynam . diff . eqns2001 （ 3 ） ]中的主要定理來研究時滯競爭擴散lotka - volterra系統波前解的存在性，給出了這個定理在非線性項滿足弱擬單調條件（ qm * ）時在系統情況中的應用；並利用單調迭代方法和上、下解技術，對于具有部分零擴散系數的時滯反應擴散方程建立波前解的存在性定理，對于具有部分零擴散系數的時滯反應擴散方程建立波前解的存在性定理。
  4. Compared with the multi - unit approaches, maximum nongaussinity estimation is superiror in simple theoretical foundation and flexible implementation, and thereof the popular fast fixed - point iteration ( fastica ) based on negentropy approximation has become one of the most popular algorithms for ica

    和非線性去相關方法比較，最大非高斯估計的原理簡單、實現靈活，其中基於負熵近似的快速不動點演算法（ fastica ）已經成為當前最為流行的ica演算法之一。
  5. The iteration scheme with errors for zero point of maximal monotone operator in hilbert space

    賦范線性空間中一類運算元的不動點逼近問題
  6. By successful solution of non - linear magnetic fields and revision of the program, we can reach following conclusions : in the computation of nonlinear magnetic fields, if iteration method is used, under - relaxation is necessary when amending the permeability distribution in soft magnetic materials ; and when < wp = 5 > calculating the equivalent current density in permanent magnets, under - relaxation is not a necessity ; when searching for permeability values by interpolation method on the demagnetization curve of soft magnetic materials, if a fixed saturation point is set, around this point an abrupt change of permeability values will be obtained ; this sudden change may cause a little problem in the smoothness of magnetic field distribution ; because the magnetic circuits of microwave tubes are too complicated, in the author ' s view, to describe the working state of a magnet system, the working points of magnets can not do it properly but average energy production of magnets will serve ; as to indicate the quality of a magnet system design for microwave tubes, the efficiency of magnetic energy utilization will be a very good criterion

    由此得出結論，在非線性磁場計算中：採用迭代法的情況下，在各迭代循環之間進行磁導率修正時，一個欠鬆弛迭代過程是必需的；對永磁體中的等效電流修正時可以不作欠鬆弛迭代；在純鐵的磁化曲線上指定某一個固定的磁感應強度為磁飽和值，會使得插值求出的磁導率在該磁飽和值附近有一突變，這一突變對計算結果中磁場分佈變化的光滑性稍有影響。在微波管磁系統設計中，由於微波管磁路比較復雜，作者認為磁體的工作點並不能很好地反映磁體的工作狀態，而採用平均磁能積為衡量磁體工作狀態的標準更加符合微波管磁系統的實際情況；要表示磁系統設計好壞的程度，則用磁能利用的效率為標準更好。
  7. Third, by means of smale, s point estimates theorem, the existence and the convergence theorem of broyden, s iteration is given, the method has less calculation and the speed of super linear convergence for solving the nonlinear equations with nondifferential terms under the point estimates or weak condition

    第三，本文利用smale提出的點估計理論，給出了在點估計和弱條件下，用計算量小、具有超線性收斂速度的broyden方法來求解帶不可微項的非線性方程，給出了存在性收斂性定理及相應的證明。
  8. Convergence and stability of fixed point the ishikawa iteration procedures for asymptotically nonexpansive mapping

    迭代程序收斂性與穩定性
  9. The smaller the value of the merit function is, the closer the iteration point is to the solution

    當價值函數的值越小時，迭代點越靠近最優解。
  10. 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。
  11. A direct iteration method in solving normal equations by means of bidirectional asynchronous integral has been successfully exploited, so that it can efficiently overcome the difficulty in solving two - point boundary value problems resulting from inverse stability between state equation and co - state equation

    文中提出雙向異步積分迭代求解正則方程組的直接迭代法，較好解決了狀態方程和協態方程穩定性相逆給求解兩點邊值問題帶來的困難。
  12. The last proposed method is based on the distributed parameter model, the algorithm utilizes searching and iteration methods to locate the fault point

    第三種方法採用電纜線路的分佈參數線路模型，根據功率平衡原理推導出故障測距方程，並通過搜索迭代方法解之。
  13. An iterative particle swarm algorithm is proposed for the robust optimization problem of hatch processes without state independent and end - point constraints, which combines the iteration method and the particle swarm optimization algorithm together

    摘要針對無狀態獨立約束和終端約束的間歇過程魯棒優化問題，將迭代方法與粒子群優化演算法相結合，提出了迭代粒子群演算法。
  14. Fixed - point iteration for uniform lipschitz asymptotically nonexpansive mapping of uniform convex banach space

    一致李普希茲漸進非擴張映射的不動點迭代問題
  15. Finally, we proposed a novel improved self - adaptive algorithms and testified its combining encryption effect with its position and energy information. in part two of this thesis, we analyze the dynamic states of an image caused by image iteration, as a result we point out that the holographicity exists with chaotic characters simultaneously during image scrambling

    隨后，我們分析純位置移動演算法的弱點並作了改進，給出了一種新的自適應圖像置亂加密演算法，經過本演算法加密的圖像可以有效地防止已知明文的攻擊，並具有很好的完整性保護功能，亦可用於圖像驗證。
  16. A llmmse filter is designed to reduce noise based on the noise model to improve snr of images. making use of the shape and lightness characters of feature points to detect the feature p oints from images. because the accuracy of feature imaging point ' s centroid has close relationship with measuring accuracy, an algorithm based on iteration of the center of the track window is used to improve the measurement accuracy

    圍繞著提高測量精度的要求，分析了影響ccd圖像質量的三類隨機噪聲，建立局部統計特性為高斯分佈的簡化圖像噪聲模型，利用線性最小均方誤差濾波器對圖像進行預處理，而後根據特徵點的亮度和形狀特徵對特徵像點進行檢測，進一步在特徵像點的匹配中採用自適應的質心迭代演算法提高跟蹤精度。
  17. They abstract loads as points, and simplify the issue to find the point which makes running cost of electric power system minimum as optimal substation location. the single location optimal model is solved by the method of iteration which is often used to solve extremum problem. the multiple location optimal model is solved by the method which is called location, distribution by turns

    用得最多的模型是經典的單、多源連續選址模型，它將負荷抽象為幾何意義上的點，將求最佳所址簡化為求使網路運行費最小的點的坐標，單源連續選址採用數學優化方法中求極值的迭代求解，多源連續選址通常採用交替選址?分配法求解。
  18. And we point out that iteration ( 2. 1. 1 ) is much better than jarratt - type method if the property of the operator is n ' t good enough

    和ma . hern如dez等人提出了一族帶參數。的三階收斂的迭代方法（見參考文獻{ 1 ， 2 ） 。
  19. Comparing the old iteration algorithm, the rapid iteration algorithm is which decomposes binary variable iteration, which include the hit - point range error iteration and hit - point azimuth error iteration, to be two unary iterations

    這種方法與慣用迭代方法相比，其優點是將落地點射程偏差和方位角偏差的二元迭代分解成兩個一元迭代，這樣不僅可大大提高彈道迭代的收斂速度，而且可以滿足任何需求的迭代精度指標。
  20. Abstract : this paper presents a new primal ? dual interior point algorithm for a convex programming with box constraints, and prove the iteration complexity is polynomial

    文摘:本文為框式約束的一類凸規劃提出了一個新的內點演算法，原始-對偶路徑跟蹤法，並證明了演算法的迭代復雜性為多項式時間性
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