躍變函數 的英文怎麼說

中文拼音 [yuèbiànhánshǔ]
躍變函數 英文
jumfunction
  • 躍 : 動詞（跳） leap; jump
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. They varied both chamber pressure and mixture ratio, making use of a stepfunction change in the oxidizer injection rate.

    他們通過用氧化劑噴射速率階躍函數變化的方法來改變氣室壓力和混合比。
  2. The analyzable conclusions of the regression model between crown diameter and age show that the utility of unit step function model in the crown growth process with the changing point is better than the usual regression methods, and the unit step function model can solve discontinuance on the changing point

    對樹冠與林齡的回歸分析結果表明：階躍函數模型在具有變點的桉樹林分樹冠生長過程中的應用效果優於一般回歸擬合模型，可較好地解決分段擬合模型在變點上的不連續問題。
  3. In chapter 2 there are four goals : the first is to investigate some geometric properties of h - caccioppoli sets, the second is to characterize the discontinuous set su and jump set ju of u bvh ( ), the third is to study pointwise behavior of u bvh ( ) and our effort is concentrated on showing approximate differentiability of u in the sense of pansu ' s, while the last and the most important is to show that dhu with u bvh ( ) as a radon measure can be split into three parts ( absolutely continuous part, jump part and cantor part, respectively ) just like the derivative of a bv function in the setting of euclidean space

    第二章有四個目標：一是討論h - caccioppoli集的若干幾何性質，二是刻畫h -有界變差函數的近似不連續點集和跳躍點集的特徵，三是研究u bv _ h （ ）的逐點行為，我們集中討論u在pansu意義下的近似可微性，最後也是最重要的目標我們證明對u bv _ h （ ） ， d _ hu作為radon測度能夠分解成絕對連續部分、跳躍部分和cantor部分之和。
  4. We deduce the correlation functions of order parameter by hyperboloid function ( t > tc, t < tc ), and then compare the two functions to get the change of specific heat, and to get correlation length ? as the token of correlation degree

    利用殘數定理分別求t t _ c ， t t _ c時的關聯函數，發生相變時比熱的躍變，找到表徵關聯的特徵量? ?關聯長度，進一步確定landau理論的適用范圍。
  5. According to the crown growth characteristics in industrial eucalyptus stand of short rotation, the unit step function model was put forward for the process with changing point of short rotation eucalyptus clones u6 based on the survey practical stands

    摘要針對短輪伐期桉樹人工林林分冠幅生長的特點，在現實林分調查的基礎上，模擬提出了適合有變點的短輪伐期桉樹u6無性系林分冠幅生長階躍函數模型。
  6. Details are as follows : we deal with properties of bilevel linear programming and prove the equivalence of bilevel linear programming and optimization over the efficient set. a class of multi - objective tow level programming, i. e. the upper - level is single objective and the lower - level is linear multi - objective, is mainly discussed. it can be converted into the optimization over the efficient set with parameter and an algorithm is given with its finite termination being proved ; when the upper - level is linear function, an exact penalty function algorithm is given

    分層（分級）遞階系統是社會組織管理的主要形式，多層規劃是研究這類系統優化問題的基本模型，其鮮明的實際背景和廣泛的應用前景引起了人們的廣泛關注，成為一個新興的活躍的研究領域，本論文研究了二層規劃中的若干問題，主要工作如下：討論了二層線性規劃的性質，並證明了它與零有效集上優化問題的等價性；對一類二層多目標規劃（上層為單目標規劃、下層為線性多目標規劃的問題）進行了探討，將其轉化為含參變量的有效集上的優化問題，進而給出了一種演算法，並證明了該演算法的有限終止性；當上層為線性單目標時，給出了一種罰函數方法
  7. In the 3rd section we introduce how to use mathematical model to study financial problems, whose assets running on mixed jump - diffusion process, first we get the famous non - linear feynman - kac formula by fbsde, then let the solution of the bsde be a investor ' s utility function, and it ' s the so - called recurse utility function. second, we can prove that this utility function is a continue viscosity solution of the variation inequality which we get above, and we get the comparison theory. third we can use the result to financial market to study the optimal consumption and portfolio problem or evaluate the american option

    第三章介紹了利用金融資產價格運行基於復合跳躍? ?擴散過程的數理模型來研究金融經濟問題，通過結合運用正倒向隨機微分方程，推導得到著名的非線性feynman - - kac公式，並且將相應的倒向隨機微分方程的解記為投資者的值函數，這也就是通常所說的效用值函數；接著我們可以證明此效用值函數為某一偏微積分變差不等式的連續粘性解，並且得到了比較原則；這些結果可以應用到金融領域用於消費投資組合的選擇或是美式期權的估值。
  8. The innovative ideas in this paper is to replace the linear fixed - gain pid controller for a nonlinear pid controller. based on the step response curves of conventional control system, we analyze the ideal variety of three gains in different times and construct the simulated curves of proportional, intergral and derivative gain. the controllers has considered all sorts of imperceptible factors affecting the servo performances in a lpmsm servo system, which include the parametric uncertainties brought by the changes of the mobile mass, the dynamitic performance of the system and the size of input. to solve the problem of so many unknown parameters, we use transmit arithmetic to find the parameters which are fit for the system. to keep the robust and stable performance

    本文的創新之處在於，將傳統的固定增益的pid控制器用非線性pid控制器來代替，並在此基礎上，就一般控制系統的階躍響應曲線，分析了在不同響應時間階段pid的三個增益調節參數的理想變化情況，並根據這些理想變化，分別給出了比例、積分、微分增益參數的一種連續的非線性擬和函數。在分析雙位置環時，仔細考慮了能使系統性能變壞的各種因素，如系統的動態性能及控制出入能量的大小等等。
  9. 4. after changing the short - term profit function to possion jump process, in the view of that the derivated partial differential equation of the option pricing which different from black - scholes partial differential equation still is that interest rate is constant ( 4. 2 ), the model which does not accord with the real market under the assumption. at last, we derivat a new model of option pricing whoso profit rate is possion jump process under stochastic interest rate ( 5. 13 ), this model not only changes the form of the short - term profit function of the stock price model and avaids the simplization of the profit rate function the unusual flunction sources bring about, but also relaxes the basis assumption of black - scholes option pricing model and makes that the partial differential equation builds the foundation which even approaches the actual market

    4 、將短期收益率函數由確定函數修改為possion跳躍過程后，文[ 15 ]推導出的期權定價偏微分方程（見方程4 . 2 ）雖然推廣了black - scholes期權定價偏微分方程，但此時依舊假設利率是常數，這與實際生活中的不符，我們研究了一個隨機利率下短期收益率函數是possion跳躍過程的期權定價模型（見5 . 13 ） ，該模型既改變了股票價格波動源模型中短期收益率函數的形式，避免了異常波動源帶來的收益率函數的簡單化。
  10. So the conductive behavior in ac field was equivalent with the parallel connection of a resistor and a capacitor, the nonlinearity of v - i characteristics originate from a combination of the implication of the nonlinear contribution of tunnel conduction between graphite particles and the production of additional conducting pathways under sufficiently strong local fields, which is the function of the gap between graphite particles and has a relation with the transition ability of electrons

    導電瀝青混凝土的導電行為則可用隧道效應進行分析，交變電場中的導電行為可等效為電阻r和電容c並聯，非線性v - i特性產生於隧道效應時粒子間的非線性導電和高電場時誘發額外的導電通路，二者是粒子間隙的函數，與電子躍遷能力有關。
  11. In order to deduce the effects on dynamic performances, a method by using prediction filter is introduced. to minish overshoot subsection of input signal with exponent is adopted. these methods are proved by mathematic simulation

    針對動態高型控制方法使系統動態性能變差的問題，提出了利用預測濾波技術改善系統動態性能的方法，進一步提出了利用指數函數將階躍輸入信號分段以降低系統超調量的方法，並通過數學模擬驗證了這兩種方法的有效性。
  12. Wavelet transform is a time and frequency local transformation and it can withdraw the information from the signal. through the calculate function making the muti - scale analysis it resolves many difficult problems which fourier transformation ca n ' t resolve. in recent years the researches and the applications of wavelet transform on the image compression are flourish, but because wavelet transform is very complicated and its apply has certain localizations

    小波變換是一個時間和頻率的局域變換，因而能有效的從信號中提取信息，通過伸縮和平移等運算功能對函數或信號進行多尺度細化分析，解決了fourier變換不能解決的許多困難問題。近年來小波變換在圖像壓縮的研究和應用都十分活躍，但是由於小波的理論很復雜，因此應用起來就有一定的局限性。
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