perturbation theory 中文意思是什麼

perturbation theory 解釋
（應用數學力學中的一個重要理論） 攝動理論
  • 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
  • theory : n. 1. 理論，學理，原理。2. 學說，論說 （opp. hypothesis）。3. 推測，揣度。4. 〈口語〉見解，意見。
  1. Calculate the masses of octet baryons from chiral perturbation theory

    利用手征微擾理論計算強子八重態的質量
  2. A dark - soliton perturbation theory on the defocusing nonlinear schr dinger equation

    方程的暗孤子微擾理論
  3. Collisonal quantum interference ( cqi ) was observed in the intramolecular rotational energy transfer in the experiment of the static cell, and the integral interference angles were measured. to observe more precise information, the experiment in the molecular beam should be taken, from which the differential interference angle can be obtained precisely. in this paper, the theoretical model of cqi is described in an atom - diatom system in the condition of the molecular beam, based on the first - born approximation of time dependent perturbation theory, taking into accounts the anisotropic lennard - jones interaction potentials. the method of observing and measuring correctly the differential interference angle is presented. the changing tendencies of the differential interference angle with the impact parameter, velocity, and et al. are discussed

    分子內部轉動傳能的靜態池實驗觀察到了碰撞量子干涉效應（ cqi ） ，並且測得積分干涉角，為了獲得更加精確的分子內部轉動傳能的碰撞量子干涉效應信息，實驗就必須要採用分子束實驗進行.本文理論上採用各項異性相互作用勢，應用含時微擾理論的一級波恩近似，假想在分子束實驗的條件下，建立在原子-雙原子分子體系中碰撞量子干涉的理論模型.理論上推導出微分干涉角具體表達式，通過計算定性地討論了微分干涉角隨著碰撞參數、速率等的變化趨勢，同時初步探討了實驗的正確觀測途徑，得出了採用分子束進行實驗觀測的實驗方法，為進一步進行分子束實驗提供了理論基礎，對實驗的進行起到了一定的借鑒作用
  4. Read chap. 5 of your text book to complement our discussion of heavy mesons in chiral perturbation theory

    10閱讀教材第五章以補充關于手征微擾理論中重介子的討論。
  5. We must seek two main approximation methods of solution, the variation method and perturbation theory.

    我們必須尋求兩個主要的近似解法、變分法和微擾法。
  6. In part two of this paper, many - body perturbation theory has been used to calculate the resonance structure ( 3p - 3d ) into the photoionization ( 4s - kp ) for ion ca +

    在本文的第二部分，運用多體微擾理論，我們計算了ca ~ +離子在4s kp的光電離過程中， 3p 3d躍遷的共振結構。
  7. Ballistic perturbation theory

    彈道擾動理論
  8. The equation including the nonlinear dispersion, i. e. the modified nonlinear schrodinger ( mnls ) equation, is a better model. in this thesis, we take mnls solitons as a model for femtosecond soltions. then based on the recently developed direct perturbation theory for perturbed mnls equation, we study the raman self - frequency shift of femtosecond solitons and its suppression by the means of frequency filters. for this purpose, first, we define the physical parameters of mnls solitons ; next, through the direct perturbation theory for perturbed mnls equation, under adiabatic approximation, we obtain the evolving parameters of mnls soliton on our questions and then choose the parameters of frequency filters based on it ; at last, we directly numerically simulated our questions by split - step fourier ( ssf ) method after improving the arithmetic of the differentiation of the nonlinear item for satisfying mnls equation

    本論文以mnls孤子作為光纖飛秒孤子的模型，通過新近建立的mnls孤子直接微擾理論，研究光纖中由拉曼效應引起的飛秒孤子在傳輸中的自頻移，以及通過頻率濾波對自頻移的抑制。為此，首先給出描述mnls孤子的各物理量，然後用mnls孤子直接微擾理論，解析地得到這些問題絕熱近似下的孤子參數演化，並由此選擇頻率濾波的參數，最後用分步傅里葉方法，在對非線性項微商的演算法做出了適合於mnls孤子的改善後，對拉曼效應及頻率濾波進行了直接數值模擬，其中頻率濾波參數用微擾理論確定。
  9. Typical accident - causing " theories includes heinrich " s domino " s theory, its development by bird, adams and other people, progress of which is that it is deficiencies of management system that are the root cause in accident causation sequence. this is author " s idea resource and main method to produce the water traffic accident - causing theory. in addition, uncontrolled transferring of energy theory, applies widely in safety management scheme for water traffic ; human error accident model can be used to analyze causes of collision accident and to take preventive measures ; perturbation theory and multilinear event sequencing method is a very useful investigation method to water traffic accidents

    有代表性的事故致因理論有海因里希因果連鎖理論以及博德、亞當斯等人對該理論的發展，這些發展的主要進步是突出了管理缺陷是事故因果連鎖中的基本原因，是本文分析和發展水上交通事故致因理論的主要思想來源和方法論；能量意外轉移理論，廣泛的應用在水上交通安全的各項具體管理制度中；人失誤事故模型能用於指導對碰撞事故的原因分析和預防；動態變化理論及多線性事件連鎖論對指導事故調查是較好的分析方法；軌跡交叉理論雖然以獨立的理論形式存在，但本文認為其實質仍然是因果連鎖理論的發展。
  10. We have summarized a set of theoretical approach to this problem and discussed the instability of the gas cloud and the systems composed of collisionless particles in the background of dark matter. linear perturbation theory is the method to solve this problem, in which, we add the perturbation into the equilibrium state and discussed its evolution

    本文研究了自引力系統的穩定性問題，總結了解決該問題的一套理論方法。並具體研究了存在暗物質背景時氣體雲和無碰撞粒子系統中擾動的演化情況。解決穩定性問題的方法用線性擾動理論，即在平衡態中加入擾動，研究擾動在系統中的演化情況。
  11. In the second chapter, the nonlinear optical properties are described from both macroscopic and microscopic views, at the same time, giving the definitions of the linear and nonlinear polarizabilities. then, the explicit expressions of the linear and nonlinear polarizabilities are obtained by using quantum mechanical perturbation theory and density matrix formalism, respectively

    第二章非線性光學性質，首先分別從宏觀和微觀兩個角度討論了極化強度和電偶極矩與外加光電場強度之間的關系，同時給出了線性極化率和非線性超極化率的定義，然後分別運用含時微擾理論和密度矩陣理論求解了分子體系的線性極化率和非線性超極化率。
  12. Asymptotic perturbation theory. higher - order effects

    16漸近擾動理論-高階效應。
  13. Eigenvalue perturbation theory with applications to small structural damage detection

    特徵值攝動法在利用動響應結構小損傷檢測中的應用
  14. The linear time perturbation theory is used in this paper, the effects of rotary flow, axial flow and both of them to the arc stability are discussed respectively. the corresponding equations and the boundary conditions are deduced

    本文採用與時間有關的線性微擾理論，分別討論了旋轉氣流、縱向氣流的作用，以及它們共同的作用下電弧螺旋不穩定性的特徵。
  15. 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。
  16. Read georgi chap. 4 and chap. 5 to complement our chiral perturbation theory discussion this week

    10閱讀georgi的第四、五章，補充本周手征微擾理論的討論。
  17. The author built the dynamics model of its constrained motion with frictional contact, and its moving stability is analyzed by singular perturbation theory

    提出了管道內受限微機器人運動的動力學模型，並根據這一模型利用奇異攝動理論對微管道機器人管內運動穩定性進行了研究。
  18. 74 explores time - dependent quantum mechanics and spectroscopy. topics covered include : perturbation theory, two - level systems, light - matter interactions, relaxation in quantum systems, correlation functions and linear response theory, and nonlinear spectroscopy

    74探索與時間相關的量子力學與光譜學，課題包含：微擾理論、雙能級系統、光與物質之作用、量子系統的鬆弛過程、相關函數與線性響應理論，以及非線性光譜學。
  19. The first - order perturbation method correct for forcing decoupling method based on perturbation theory is put forward to decrease error ; iii. the complex modal method is introduced into analysis of non - classical damping systems to eliminate error of forcing decoupling method, and improve the complex modal response spectrum, which can apply to design of non - classical damping systems ; iv. for exerting the energy dissipation capability of each device, a two - step optimum method, whose controlling function is extremum expectation of interbedded displacement, is put forward to optimize the number and position of device ; v. the problem of iterative method applied to analyze energy dissipation systems is indicate, and give some primary advice based on pilot study

    為改善上述缺點，本文進行了以下的研究工作：在忽略耗能器附加質量的基礎上，推導出適用於耗能減震結構的攝動法，減少振型分解法在迭代計算過程中的工作量，加快計算速度；針對運動方程的強行解耦所產生的誤差，根據攝動法原理，對其進行一階攝動修正；為消除強行解耦振型分解法用於非比例阻尼結構分析時產生的誤差，引入狀態空間對系統進行復模態分析，並改進了基於復模態理論的、適用於非比例阻尼結構設計的雙反應譜方法；對于耗能器的數量和位置優化進行了一些探討和研究。
  20. The basic blocks in the color dipole method are the lc wavefunction and the dipole cross section. the lc wavefunction is calculated from perturbation theory. we have shown that the lc wavefunction for the y ' q configuration plays the role of a weight for the different transverse separation p contribution to the process

    ~ * q光錐（ lc ）波函數在- p碰撞過程中起了權重的作用：無論是橫向極化光子還是縱向極化光子，由於lc波函數的作用，在~ * q橫向距離p很小時對截面貢獻是主要的。
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