first passage time 中文意思是什麼
first passage time
解釋
初過時間-
In the case of uncorrelated noises, it is shown that only the fluctuation of degradation reaction rate can induce a switch process, and the mean first passage time ( mfpt ) between the high concentration state and low concentration one is decreased when the noise intensity of degradation reaction rate is increased
可以看到源於蛋白質基本合成率的噪聲強度不能引起基因狀態的轉變（即基因的開關）而源於降解率噪聲強度則能夠實現這種開關。當進一步研究在降解率波動作用下基因從一個態躍遷到另一個態的平均首通時間（ mfpt ）時可以看到此時隨著這個波動強度的增加， mfpt是單調遞減的。 -
This is just a method for using to passing 16 bits 44. 1s khz passage compressing more musics within many hdcd technique, look like technique read with the strong scope of 16 bits coding. that system at used the process to inside expressed extreme of excellent technique, also reflected a personal sense of hearing, recording, electronics design with figures number coming of modern ear that handle. the graveness that hdcd technique is a figures stereo set leaps. the easy to do compares a mother for using the hdcd plait the solution code to take with a tradition of 16 mother that bits 44. 1s khz the edition take, and the hdcd can get the resolution of more detailses ; the restoring of tone color is too more accurate ; the high part is more smooth, and also little the trace of the many artificial ; more wide and dynamic scope ; big development with complicated chapter more contain clarity ; field of more wide voice ; when the musical instrument of the other and big volume give musical performance, can more goodly the hear the small volume musical instrument deeply thought to deduce. even we expect already a long time of the cd system type of the high quality way for a life time empress, 16 bits 44. 1s khz system type cd will still very longly a period of time inside can t withdrawing the music satge, because hdcd system providing first kind from the cd format obtaining bestly music
Hdcd技術是數碼音響的重大飛躍。輕易比較一個用hdcd編解碼的母帶和一個傳統的16bit 44 . 1khz版本的母帶， hdcd可以得到更多的細節解析度音色的還原也更加準確高音部分更加平滑，也少了許多人工的痕跡更寬的動態范圍大動態和復雜的章節更有透明度更寬廣的聲場當其他大音量的樂器演奏時，可以更好地聆聽小音量樂器的精微演繹。即使我們期盼已久的超高音質的cd制式面世后， 16bit 44 . 1khz制式cd仍將很長一段時間內不會退出音樂舞臺，因為hdcd系統提供了一種從cd格式里獲取最好音樂的方式。 -
The first - passage time of controlled quasi - hamilton systems have been studied by using the stochastic averaging method for quasi - hamitonian systems and the stochastic dynamical programming principle
本文利用擬hamilton系統的隨機平均法及隨機動態規劃原理研究了具有控制的擬hamilton系統的首次穿越問題。 -
Then, the dynamical programming equations and their associated boundary and final time conditions for the problems of maximization of reliability and of maximization of mean first - passage time are formulated. the optimal control laws are " bang - bang " controls which are derived from the dynamical programming equations and the control constraints
然後利用隨機平均法及隨機動態規劃原理導出了以最大可靠性為目標的隨機最優控制策略，說明了當控制力為有界函數時，隨機最優控制即是bang - bang控制。 -
First, the backward kolmogorov equation for the conditional reliability function and the pontryagin equation for mean first - passage time and then - associated boundary and initial conditions are derived based on the stochastic averaging methods for quasi non - integrable, quasi integrable and quasi partially integrable hamiltonian systems, respectively
首先利用擬不可積、擬可積非共振及擬部分可積非共振hamilton系統的隨機平均法分別給出了研究該系統首次穿越問題的提法，包括計算條件可靠性函數的後向kolmogorov方程及計算平均首次穿越時間的pontryagin方程及其邊值條件。 -
The main work and achievements are summarized as follows : according to the spectrum analysis theory, the simple formula of the power spectrum between the excitation and the response is obtained. then the time - domain statistical properties of the structural response are acquired through fourier inverse transform, and cauchy ' s residue theorem is applied to solving the integral of fourier inverse transform, the structural dynamic reliability is calculated in terms of possion hypothesis based on first passage failure
主要研究內容如下：從譜分析理論出發，得到了激勵與響應功率譜之間的簡明關系式，由fourier逆變換得到響應的時域特徵，利用cauchy留數理論處理fourier逆變換的積分式，基於首超破壞的possion假設計算結構系統的動力可靠性，並在此基礎上進行結構優化設計，奠定了確定性模型的基礎。 -
For ld - ( zd, ed ) : assign to each edge of ed an independent. non - negative random variable u ( e ) ( which we think of as being the time required for fluid to flow along e ) with distribution function f. this is our first - passage percolation model
對圖l 『 （ z e勺，如果e 『中每一條邊e都有一個取值為非負的，分佈為廠的隨機變量叫。 ）與之對應（ 。何表示液體通過邊e所需要的時間） ，且。
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