initial value method 中文意思是什麼
initial value method
解釋
初值方法-
Creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響 -
Abstract : creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design
文摘:基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響 -
The method of sobel edge detection is used to get the initial position and orientation value of optimization in order to improve the convergence speed. the iteration numbers and feature abstraction effect are compared with the method in which the initial value is randomly created
演算法使用sobel邊緣檢測方法，給出優化初始位置和方向，以提高優化的收斂速度，針對提取特徵時的優化迭代次數和提取特徵的效果與隨機產生優化初始值的方法進行了比較。 -
In section 2. 2, by a priori estimates and fourier spectral method, we prove the existence and uniqueness of the global smooth solution for the periodic initial value problem and obtain the large time error estimate between spectral approximate solution and the exact solution. in sections 2. 3 and 2. 4, by a priori estimates and galerkin method, we prove the existence of the global smooth solution and global attrac - tors for the initial - boundary value problem. chapter 3, consider the initial - boundary value problem of the multidimen - sional non - homogeneous gbbm equations
第二章，考慮一類一維非齊次bbm方程，在第二節中利用fourier譜方法和先驗估計證明了具有周期初值問題的整體光滑解的存在性和唯一性，給出了fourier譜近似解和精確解的長時間誤差估計；在第三、四節中討論了初邊值問題，利用與時間t無關的一致先驗估計，證明了整體光滑解和整體吸引子的存在性。 -
In order to solve the problems of flux estimation using the voltage model, such as the initial value and the drift of pure integrator, a flux - observer - based method is applied
利用磁通觀測器，可避免用電壓模型推算轉子磁通時遇到的積分運算問題（初始值確定和誤差積累引起的積分漂移） 。 -
By the structure of weak entropy solution of corresponding initial value problem and the boundary entropy condition which was developed by bardos - leroux - nedelec, we give a construction method to the weak entropy solution of the initial - boundary value problem
由相應的初始值問題弱熵解的結構和bardos - leroux - nedelec提出的邊界熵條件，給出初邊值問題弱熵解的一個構造方法。 -
The key point of this method is that the error of initial value of baseline vector must be very small, for example, less than 0. 33 cycles
該方法不涉及「周跳的探測及修復」和「整周模糊度的確定」等問題。 -
Method, which specifies the starting point of the fill and contains an initial value
方法的范圍，此范圍指定填充的起始點並且包含一個初始值。 -
At the beginning of fourth chapter, the article transforms the solving problem of partial differential equation for the american put price into a standard initial and boundary value problem of parabolic type by making some transformations. afterwards, the solving problem of parabolic type is transformed into a initial value problem of ordinary differential equation with respect to through fourier transform again. at the last section of the fourth chapter, the article solves the initial value problem with the progressive euler method and the finite element method
在第四章，對美式看跌期權價格所滿足的偏微分方程定解問題通過作一系列變換，使之轉化為一個標準的拋物型初、邊值問題，接著又通過傅里葉變換，把拋物型初、邊值問題轉換為一個關于時間變量的常微分方程初值問題，然後再分別利用改進的歐拉法和有限元法對其進行了求解。 -
The six methods are as follows : the supperposition method, the state space method, the complex mode method, the direct integral method, the numerical method for solving the initial - value problem of first - order ordinary differential coupled equations with constant coefficients, and the time domain finite element method
這六種方法是：振型疊加法、狀態空間法、復模態法、直接積分法、一階常微分方程組初值問題的數值解法和時域有限元法。 -
The convergence and stability for the schemes are proved, and the error estimates are obtained. chapter 5, consider the damped coupled generalized nonlinear wave equations. in section 5. 2, by coupled a priori estimates and galerkin method, prove the existence and uniqueness of the global smooth solution for the periodic initial value problem and obtain the existence of global attractors
第四章，考慮一類具耗散的廣義kdv方程組的周期初值問題，在第二節中證明了整體光滑解的存在性和唯一性，得到整體吸引子；在第三節中構造了半離散和全離散的fourier譜格式和擬譜格式，在整體光滑解存在的條件下，證明了這些格式解的收斂性，並得到了誤差估計。 -
Initial value problem iterative method forfirst - order implicit different equation
一階隱式微分方程初值問題迭代法 -
For the initial value with later precision, it is shown by the actual nonlinear function examples that we can still get the precise original solutions by homotopy nonlinear ls method
算例表明，對于精度較差的初始值，演算法仍能精確地收斂到原方程的參數估值。 -
Abstract : in this paper, the authors study the initial value problems of a class of weakly nonlinear differential equation. the first and the second order approximate solutions are obtained. their accuracies are high and the more the approximate order is high, the more the accuracy is high. if the regular perturbation method is used to solve the same problems, then, when the independent variable is big, so is the error of the solution
文摘:用插值攝動法1研究一類弱非線性常微分方程的初值問題，得到了一級及二級近似解.解的精度很高，並逐級提高.如果用正則攝動法求解此類問題，則當自變量較大時，誤差很大 -
( 2 ) using the method of parameter identification in literature [ 117 - 118 ], selecting gain function : giving the initial value of the parameter observer from the time serial of output variables of the system, the numerical simulation result shows that the parameter observer proposed in this paper can identify the unknown parameters of the system quickly and exactly no matter if the parameters keep invariable or change in some rule, and the identifying speed is faster than the method in [ 117 - 118 ], when the unknown parameters are being identified, vith parameter compensator, it can synchronizes two hyperchaotic systems completely even if some parameters mismatch
（ 2 ）採用文獻[ 117 - 118 ]提出的參數辨識方法，通過選取更一般的增益函數： l _ i （ x _ i ） = kx _ ii = 1 ， 2 ， 3並根據系統輸出變量的時間序列給出參數觀測器的初始值來進行參數辨識，數值模擬結果表明：採用本文的參數觀測器，在系統參數固定或變化的情況下，都可對系統未知參數實現快速高精度辨識，辨識的速度快于文獻[ 117 - 118 ]提出的方法；在辨識參數的同時，結合參數補償器，使兩個參數不匹配的超混沌系統同步。 -
The existence of global solutions on interval [ 0, a ] ( a > 0 ) for the first order initial value problem of discontinuous equations in banach space ( 1 ) is discussed. the fixed - point theorem of t - monotone increasing operators and the partial - ordered method are applied to these problems. an existence result is obtained. the results extend the relevant conclusions in reference [ 7 ]
利用t -單調增運算元不動點定理和半序方法，得到了banach空間中含有間斷項常微分方程初值問題（ 1 ）在[ 0 ， a ] （ a 0 ）上整體解的一個存在性結果，改進了文[ 7 ]中的相應結果。 -
There are many faults in the chaotic optimization algorithm. to solve these problems, a new method named " bisection - interpolation approach " is put forward. it has numerous advantages such as ergodicity, uniform distribution, not sensitive to the change of initial value, not sensitive to the defining range of variable, not requiring the continuation and not requiring differential of the optimized object
該演算法和混飩一樣具有遍歷性的特點，且變量均勻分佈於定義域，對函數的定義域變化和初值的選定都不敏感，同樣也不需要函數連續、可微，對優化對象幾乎沒有特別要求，從而避兔混池優化演算法的缺點。 -
The method not only solves the problem of how to choose a suitable initial value that needed in solving nonlinear system of equations on analysis and synthesis of mechanism by iteration method, but also better thoroughly solves the problem of multi - solutions on the assembly configurations of mechanism and multi - scheme about the synthesis of mechanism
這不僅解決了迭代求解機構分析與綜合的非線性方程組時所需合適初始點的選取問題，而且較徹底地解決了機構裝配構形以及機構綜合多方案設計等多解問題。 -
The aim of this thesis is to analyze the super - convergence and stability of continuous finite element methods which is a type of numerical me - thods solving the 1 - degree lineal initial value problem of ordinary differential equation, and compare the stability of the three 4 - order pre - cision numerical methods of the 1 - degree initial value problem of ordinary differential equation - classical runge - kutta method ( single step method ), adams hidden method ( multiple step method ), and continuous finite element method
本文針對一階線性常微分方程初值問題的連續有限元法的超收斂性和穩定性作了分析，並對一階線性常微分方程初值問題的具有4階精度的三類數值方法? ?經典runge - kutta法（單步法） ， adams隱式格式（多步法） ，連續有限元法的穩定性作了比較。 -
Then on the base of the computer model, the standard reentry trajectory guidance law is studied, and an approach to obtain the guidance coefficients by modifying the initial value through feedback bias repeatedly is put forward. simulations have proved the feasibility of the method
在這個基礎上，本文對飛船再入標準軌道制導方法進行了研究，提出了一種利用制導參數偏差迭代求解反饋增益系數的方法，並通過大量模擬驗證了此方法的可行性。
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