difference equation 中文意思是什麼

difference equation 解釋
差分方程式
  • difference : n. 1. 差異，差別。2. 不和，爭論。3. 【數學】差，差額。4. 【邏輯學】特殊性。vt. 〈罕用語〉區別，使有差別。
  • equation : n. 1. 平衡，均衡；平均，相等。2. 【數學】方程式，等式。3. 【天文學】（時）差；均分，等分。4. 【化學】反應式。
  1. In the first part of the paper, the explicit form of difference equation and periodic boundary condition is derived in cartesian coordinate system. secondly, the dispersive characteristic is analyzed in cylinder coordinate system for many high power microwave devices use cylinder sws. and then the method is extended to calculate the band structure of 2 - d photonic crystal, a modified yee ’ s grid is introduced to calculate the dispersive characteristic in the case of triangular lattice, so that both square lattice and triangular lattice cases can be solved in cartesian coordinate system

    周期電磁結構的一個重要應用就是用作高功率微波器件中的慢波系統，考慮到目前大部分高功率微波器件的慢波系統多採用圓柱周期結構，在論文第四章中，在圓柱坐標系下，給出了差分方程和周期性邊界條件的具體形式，同時編寫程序，分析了milosws ，盤荷慢波結構的色散特性。
  2. The stability for difference equation is maily considered in chapter 3, where, in section 1, a new method, called " semicycle analysis method ", is introduced to investigate global asymptotic stability of rational difference equations, and which is different from the existing ways, originates from the authors " trying to solve a conjecture presented in " journal of difference equations and applications " with respect to the global asymptotic stability of a detailed rational difference equation, and which can be used to solve the global asymptotic stability of a kind of rational difference equations which are very difficult to be solved in the methods in the kno, n literature

    第三章我們主要研究了差分方程的穩定性。在第一節中介紹了一種新的方法，稱之謂「半環分析法」 ，研究有理型差分方程的全局漸近穩定性；這種方法有別于已知方法，產生於作者試圖解決國際期刊《 journalofdifferenceequationsandapplications 》上提的關於一個具體的有理型差分方程的全局漸近穩定性的猜想時；這種方法可以應用來解決一類有理型差分方程的全局漸近穩定性，且所考慮的問題很難用已有文獻中的方法解決。
  3. When the author sets up the mathematics model with describing the process of two - dimensional debris flow, he develops the continuity equation by the law of conservation of mass and establishes the momentum equations by the law of conservation of momentum. the author makes full use of the advanced computer technologies, establishes the finite difference equation of numerical simulation by the differential operator fission method, and writes programs for computers which contact friendly with the other programs. the parameters are directly input on the keyboard

    在泥石流堆積數值模擬方面，作者以前人工作成果為基礎，在建立數學模型時，根據質量守恆原理，推導建立了泥石流連續性方程，根據動量守恆原理，推導建立了泥石流運動方程;在數值解法上，充分利用高速發展的計算機技術，採用運算元分裂法建立數學模型的差分格式，開放式編製程序，人機對話方式設置參數，計算機程序具有通用性、可擴展性和易維護性。
  4. According to the difference equation, the continuous control system is translated into the discrete control system. simulation results indicate the discrete fuzzy control system using of c - s function has the same result with the continuous fuzzy control system, so the discrete fuzzy control system is successful

    將連續控制器按照一階後向差分方法離散化，並利用simulink的c - s函數編程技術建立離散模糊pid控制系統，模擬結果和連續控制系統結果基本一致，表明離散化模糊pid控制器是成功的。
  5. A new method for soving two - scale difference equation

    求解雙尺度差分方程的一種新迭代演算法
  6. Oscillatory and asymptotic behaviour of unsteady second - order difference equation

    不穩定型二階差分方程解的振動性及漸近性
  7. Oscillation of unstable type first order difference equation with continuous variable

    連續變量不穩定型一階差分方程的振動性
  8. Positive solutions for a class of boundary value problems of fourth order difference equation

    一類四階差分方程邊值問題的正解
  9. An existence theorem of solution to boundary - value problem governed by second - order difference equation

    二階差分方程邊值問題的一個存在定理
  10. Osciliation for higher order nonlinear neutral difference equation

    高階非線性中立型差分方程的振動性
  11. Asymptotic behavior of higher order nonlinear neutral difference equation

    高階非線性中立型差分方程的漸近性態
  12. The model can be made into difference equation of the temperature field that can be used to simulate calculation ; then we can get the set of edge point, and we can have the function of the fire line, and we can also have the burned area, the length of fire line and the space of fire area ; it also come to the conclusion that the main factor of forest fire is convection heat transfer

    經差分處理，得到進行模擬計算的一組溫度場計算方程；由邊界點條件，求出邊界點的集合后，擬合得出火線函數，積分后可得到時刻火場的過火總面積、火線長度和火場形狀，同時進一步證實了對流傳熱方式是影響林火蔓延的主要因素。
  13. Using the comparion theorem of difference equation, persistence theorem of discrete semi - dynamical system and stability of monotonous operator, we gain the boundary, uniform persistence and permanence of the system

    應用差分方程的比較原理，離散半動力系統的持久性定理以及單調運算元的三分穩定性，獲得系統的有界性，一致持久性，永久持久性。
  14. Corresponding to the correct water hammer mathematic model ( 3 ), the character difference equation is by comparing the new mathematic model with the old mathematic model, the last calculative part of paper argues the falseness of the current water hammer mathematic model, makes use of the improved character line method to analyze the correct mathematic model ( 3 ), studies all kinds of facts " impact on water hammer pressure value and water hammer phenomenon attenuation, points out that, in the long pipeline system, the subarea calculation of head loss along with flow rather influences the calculative results of water hammer pressure, advices to take the subarea calculation of head loss along with flow into account in the water hammer calculation of the long pipeline system

    對應于正確的水擊數學模型（ 3 ）的特徵差分方程形式如下c ，弓+吼川一c ，唱一幾弓扮幾rv另卜川= o幾代+吼川一幾唱一吼嶸{一c :腳丸}唱} ? 「本論文在最後的計算部分，通過對新老數學模型的數值計算比較，進一步論證了當前水擊數學模型的不正確性。並且應用改善了的特徵線法對正確的數學模型（ 3 ）進行了計算分析，研究了各種因素對水擊壓強值和水擊現象衰減的影響，指出在長管道系統中，沿程水頭損失的分區計算對水擊壓強的計算結果影響較大，建議在長管道系統的水擊計算中應按分區進行沿程水頭損失的計算。
  15. Some open problems for bob, hite quail population model presented by g. ladas in the first international conference for difference equation are still interesting to us. we obtain ne, results in section 4 for the oscillation and boundedness and persistence of this model, including and improving many kno, n ones

    Ladas在第一次國際差分方程會議上提出的關于bobwhitequail種群模型的一些公開問題仍是我們感興趣的問題；我們得到了該模型振動性和有界持久性等的新結果，包含改進了許多已知結果；這些結論闡述在第四節。
  16. By the help of matrix and difference equation, we give an expression of likelihood function of normal distribution ma ( 0, 1 ) sequence, which has important application in mordem control theory

    藉助矩陣和差分方程，具體給出了在實際中具有重要應用的一類數學模型? ?正態ma （ 0 ， 1 ）序列的似然函數的一種顯式表示，即具體表示成了模型參數的函數
  17. Compared with traditional air - conditioning, its advantages lie in thermal comfort energy efficiency free use of spacing and etc. this paper introduces the procedure and the result of the experiment of gas - heater radiant floor system and gshp radiant floor system and compares them with traditional air - conditioner. based on the analysis of the heat transfer of radiant floor, this paper uses the theory of heat transfer to establish a mathematical model and computes it with difference equation. the important factors inferred from the model such as floor surface temperature heat intensity composite heat transfer coefficient deviate from the experiment result in a small range of 20 % and fit the need of the practical use

    在分析了輻射地板傳熱機理的基礎上，文中利用熱傳導、大空間的自然對流換熱等傳熱學理論建立了輻射地板的傳熱模型，再採用有限差分方法對模型求解，所得有關輻射地板供冷熱性能的重要參數如地板表面平均溫度、熱流密度、地板表面復合換熱系數等與實測值相差在20以內，滿足工程使用要求；同時得出輻射地板盤管供水溫度是影響地板供冷熱性能的重要因素的結論。
  18. Asymptotic behavior of positive solutions for the delay difference equation xn

    正解的漸近性
  19. Application of the cauchy ' y law of continua, the motion equation of the tetrahedral element is concluded, and discretization the analysis zone, applying the finite difference method, all tetrahedral differential equations of motion are converted into the nodal finite difference equation

    快速拉格朗日分析程序運用連續介質的柯西定律，推導出四面體單元運動偏微分方程，並離散化分析區域，用有限差分計算方法，把所有的四面體單元運動偏微分方程等效成節點有限差分方程。
  20. Pseudo almost periodic sequence ; difference equation ; piecewise constant argument ; pseudo almost periodic solution ; neutral delay differential equation

    偽概周期序列差分方程逐段常變量偽概周期解中立型時滯微分方程
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