local perturbation 中文意思是什麼

local perturbation 解釋
局部微擾
  • local : adj 1 地方的，當地的，本地的。2 局部的。3 鄉土的，狹隘的，片面的。4 【郵政】本市的，本地的；【鐵...
  • perturbation : n. 1. 慌張，動搖；混亂。2. 狼狽，不安，焦慮。3. 引起不安[混亂]的事物；引起動搖的原因。4. 【天文學】攝動；【物理學】微擾。adj. -al
  1. A detailed study is made in this dissertation on the applicability of the classical perturbation methods to the dynamical systems with time delays, and on the global view of local bifurcations and the complex dynamical behaviors of several duffing systems under different delayed state feedback control

    本文詳細研究經典攝動法直接應用於時滯動力系統時的有效性及適用性問題，用不同方法系統分析了時滯狀態反饋下的duffing系統關于時滯的大范圍分叉模式和復雜動力學行為。
  2. A new type of viscoelastic stochastic finite element method is established using first - order perturbation theory based on local averaging method of random field and karhunen - loeve expansion theory of random process. the amount of computations is greatly reduced by transforming correlated random variables to a set of uncorrelated random variables. the relations of different random response variables are analyzed and monte carlo simulations for viscoelastic stochastic structures are investigated

    基於隨機場的局部平均法以及隨機過程的karhunen - loeve分解理論，通過一階隨機攝動方法建立了考慮材料近似不可壓縮的粘彈性隨機有限元公式，由相關結構分解減少計算量，分析了各結構隨機響應量之間的關系，給出了數字特徵的計算方法，研究了粘彈性隨機結構的montecarlo模擬驗證方法。
  3. The basic principle of cpso algorithm is that chaos initialization is adopted to improve individual quality and chaos perturbation is utilized to avoid the search being trapped in local optimum

    該演算法的思想是採用混沌初始化進行改善個體質量和利用混沌擾動避免搜索過程陷入局部極值。
  4. In chapter 2, we study the existence of the global attractor the complex ginzburg - landau equation in three dimensions space. first, we consider existence of local solu - tion. for a given perturbation n ( u ), we prove n ( u ) is contractive and locally lipschitz continuous

    在第二章，考慮ginzburg - landau方程在三維空間的整體吸引子的存在性，首先考慮ginzburg - landau方程的局部解的存在性，對於一給定的擾動項n （ u ） ，證明n （ u ）是收縮的且是局部lipschitz連續的。
  5. In this paper, we analyze the nonlinear response of a three - level a model system, using a perturbation theory based on the liouville equation. of motion and considering the lorentz local field effect

    本文中，我們考慮了lorentz局域場效應的影響，在liouville運動方程的基礎上用微擾理論分析了一個三能級系統的非線性響應。
  6. The structural dynamic sa in project is of great importance for the study on dynamic design, optimization design, control theory and dynamic modification etc. and direct method, difference method and perturbation method for dynamic sa are adopted regular, though following shortages are obvious : only local impact of the factors on the model can be obtained ; model dependence ; the interval is usually the same for all of the variables and is not related to our degree of knowledge of the variables ; shortage of precision and so on

    工程結構的動態特性靈敏度分析對工程結構的動態設計、優化設計、控制理論和動態修改等方面的研究有著十分重要的意義。目前，結構動態特性靈敏度的分析法一般採用局部法，如直接法、差分法和攝動法。但是這些方法只能求參數域某點的靈敏度，不僅受模型、計算精度的限制，而且二階以上的靈敏度求解比較困難。
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