收斂指數 的英文怎麼說

中文拼音 [shōuliǎnzhǐshǔ]
收斂指數 英文
convergence exponent
  • 收 : Ⅰ動詞1 （把攤開的或分散的事物聚集、合攏） put away; take in 2 （收取） collect 3 （收割） harvest...
  • 斂 : Ⅰ動詞1 （收起; 收住） hold back; keep back 2 （約束） restrain 3 （收集; 徵收） gather; collect; ...
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 收斂 : 1 （減弱或消失） weaken or disappear 2 （約束言行） restrain oneself 3 [數學] convergence; constr...
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  1. 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。
  2. The super - exponential iteration ( sei ) blind equalization algorithm has the advantage of good tracking capability of the time varying channel

    超指數盲均衡演算法的迭代演算法收斂速度快，且便於跟蹤時變通道。
  3. In this paper, we study the finite iterated order of growth and the iterated convergence exponent of the zero sequence of nonzero meromorphic solutions of second order homogeneous linear differential equation, and obtain some precision evaluation

    摘要研究了二階齊次線性微分方程非零亞純解的迭代級與零點迭代收斂指數，得到了它們的精確估計。
  4. In chapter 2, we discuss the problem of the relationship between the solution of non - homogeneous linear differential and small function. in chapter 3, we investigated the relationship between exponent of convergence to zero - sequence of the solution of certain homogeneous linear differential equation f ( k ) + a ( z ) f = 0 and the order of growth of a ( z )

    其中第二部分討論了非齊次線性微分方程解取小函數的收斂指數，第三部分研究了齊次線性微分方程f ~ （ k ） + a （ z ） f = 0的解的零點收斂指數與a （ z ）的級的關系
  5. Finally, a soft sensor model of melt index in polymer reaction based on the proposed method is established, and the simulation results show that in contrast to the traditional fuzzy neural network the proposed method is not sensitive to initial parameters and possesses good convergence capability and prediction precision

    最後用該建模方法建立了聚合反應中熔融指數的軟測量模型，並與完全基於梯度下降的模糊神經網路軟測量模型進行比較。結果表明改進的模糊神經網路對初始值的選擇不敏感，並且具有很好的收斂性，同時還能達到指定的預測精度，很適合工程應用。
  6. Abstract : the design problem of reduced - order state observer for a class of multi - input multi - output ( mimo ) nonlinear time - varying systems is studied in this paper. a new design method of nonlinear reduced - order state observer is proposed, and the exponential convergence is proved for the proposed state observer. the observer has the characteristics of that the speed of convergence is adjustable. finally, an example is given to show that this approach is effective

    文摘:研究一類多輸入多輸出（ mimo ）非線性時變系統的降維狀態觀測器設計問題.提出一種非線性降維狀態觀測器設計方案，並從理論上證明了狀態觀測誤差的指數收斂性.其中設計的降維狀態觀測器具有收斂速度可調的特性.最後給出了數值算例，模擬結果表明了本文方法的有效性
  7. Simple genetic algorithm gets local minimization too easily and converges slowly. to solve these problems, adaptive crossover rate that has reverse hyperbolic rel ation with the numbers of iteration is designed, and adaptive mutation rate that has reverse proportion to the distances of parents and reverse exponential relat ion to the numbers of iteration is put forward. the practical simulation results show that the adaptive ga has greater convergence speed and larger probability o f getting the best solution

    簡單遺傳演算法存在著收斂速度慢、易陷入局部極小等缺陷.針對這些缺陷，本文設計出隨相對遺傳代數呈雙曲線下降的自適應交換率，並提出與父串間的相對歐氏距離成反比、隨相對遺傳代數指數下降的自適應變異率.實例驗證表明，具有自適應交換率和變異率的遺傳演算法在收斂速度和獲得全局最優解的概率兩個方面都有很大的提高
  8. The convergence exponent of the zeros and growth order of meromorphic solutions for higher - order differential equation

    高階微分方程亞純解的零點收斂指數和增長級
  9. On the formulas of the convergence real part for the exponential series

    關于指數級數收斂實部公式
  10. With limited disturbances considered, sliding mode control is used to design the controller, which ensures the sliding mode to be exponentially converged and the sliding manifold to be reached in limited time from any initial states. and an adaptive law is designed for the unknown inertia matrix

    使用魯棒性較強的滑模控制方法設計了控制律：滑動模態是指數收斂的；在有界干擾力矩存在時，任意初始狀態都可以在有限的時間內收斂到滑動平面；對于轉動慣量未知的情形，設計了自適應律，趨近模態是漸近收斂的。
  11. By comparing vertical fracturing well simulation with a streamline model and black oil model, it was pointed out that in simulation of vertical fracturing wells of hydraulic fracturing by using grid amplification there existed many drawbacks, such as grid orientation, calculating times doubled with the increase of grid number, the heterogeneity of model increased as fracture existence, which resulted in difficulties of equation solution and convergence

    摘要通過流線模型和黑油模型模擬垂直裂縫壓裂井的對比分析，指出了在黑油模型中運用網格放大技術模擬水力壓裂垂直裂縫井生產動態存在的諸多缺陷，如網格取向嚴重、計算時間隨網格數目增加而成倍增加、裂縫的存在增加模型的非均質性從而嚴重加大方程的求解難度，方程求解出現不收斂等。
  12. In this thesis, we investigated the order of growth and the exponent of convergence of the solution of linear differential equations

    本文研究了線性微分方程解的增長級與收斂指數
  13. In this thesis, we study the exponents of convergence of the zero - sequence and the hyper - order of solutions of linear differential equations

    本文研究了線性微分方程解的零點收斂指數和超級。
  14. Under some conditions, we obtain the precise estimates of the orders of growth and of the exponents of convergence of the zero - sequence of the solutions of the above equations

    在一定的條件下，得到了上述方程解的增長級與零點收斂指數的精確估計。
  15. Normal bp algorithm can be used in many fields and resolved many practical problems, however, normal bp algorithm has many limitations such as it ' s easy to fall into the local minimum in the course of convergence, its " convergent speed is very slow, the method which set the structural parameter and the operational parameter has n ' t be widely accepted, and so on

    標準bp演算法應用甚廣，解決了許多的實際問題，但同時它也存在著諸如在收斂過程中容易陷入局部最小點、收斂速度很慢以及網路的結構參數（隱層數、隱層單元）和運算參數（步長、非線性函數的選擇）等都尚無公認的理論指導等問題。
  16. The convergences of the tracking error sequence and the input sequence can be proved by the properties of optimality criterion immediately

    該演算法的收斂速度是指數級的，其輸出誤差序列和控制信號序列的收斂性能夠得到保證。
  17. Secondly, we study the asymptotic behavior of the global spherically symmetric smooth solutions to the initial boundary value problem for the multidimensional model for semiconductors in the exterior domain, i. e., we prove that the solution of the problem converges to a stationary solution time asymptotically exponentially fast. this result was published in the journal of henan university ( natural science, 4 ( 2003 ) )

    其次，研究在外部區域上的高維流體動力模型初邊值問題:證明了該問題的解依指數形式收斂到對應穩態問題的解，這一結果已發表在河南大學學報（自然科學版） 2003年第四期上。
  18. Control of continuous affine nonlinear systems with prescribed exponentially convergent rate and performance by using set - valued analysis method. the concept of controlled

    用集值分析方法研究了仿射非線性連續時間系統具-指數收斂率和-性能的
  19. The nonrecursive algorithm is proved to terminate in finite steps and turn out to be a constant vector too. because two modifications estimated models are asymptotically uniformly nonsingular, thus the possible singularity in the adaptive pole placement systems is completely avoided. however the prior knowledge required is only the observability indices of systems, thus, the required prior knowledge is greatly reduced

    非迭代的修正策略證明了參數修正向量在有限步內收斂於一個常向量；上述兩種修正策略均保證了估計模型的一致能控性，從而徹底解決了自適應極點配中可能出現的奇異性問題，而所需的先驗知識僅為系統的能觀性指數。
  20. The astringency, error and stability of the numerical method are researched. zero matrix method, constant matrix method, and jacobian matrix method are constructed in order to improve numerical precision and efficiency. the steps for calculating matrix exponential function using pade approach method are given out

    研究了所提西安理工大學博士學位論文數值計算方法的誤差、穩定性、收斂性等數學性質，在計算精度和計算效率兩方面提出了一些改進措施，構造了零矩陣法、常數矩陣法、雅可比矩陣法等計算格式，給出了利川pade逼近計算矩陣指數函數的求解步驟。
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