exponential rate 中文意思是什麼

exponential rate 解釋
指數速率
  • exponential : adj 指數的，冪的。 exponential curve 指數曲線。 exponential function 指數函數。 exponential sum ...
  • rate : n 1 比率，率；速度，進度；程度；（鐘的快慢）差率。2 價格；行市，行情；估價，評價；費，費用，運費...
  1. The research results show that compared with the uniform inlet velocity profile, the exponential inlet velocity profile has more advantages to get lower contaminant concentration, to prevent patient and operating apparatus in the operating area from infection by airborne disease germs and to reduce the airflow rate needed for pollutant concentration control

    研究表明，與通常採用的均勻風速的送風口相比，變化風速的送風口對于降低手術室工作細菌濃度，防止病人手術切口及手術器械等回風氣流攜帶的浮遊細菌再次感染，以及減少手術室的送風量等方面具有明顯的優點。
  2. It is the main purpose of this paper to calculate the energy splitting of ground state and excited states induced by thermally assisted quantum tunneling. first, a brief introduction is given for the theoretical and experimental studies on the magnetic macroscopic quantum effects. then, spin tunneling in a uniaxial ferromagnetic particle in transverse magnetic field is converted to a pseudoparticle moving in effective double - well potential with the help of the effective potential description of quantum spin systems developed by ulyanov and zaslavskii. finally using the periodic instanton method we evaluate the transition amplitude, energy shift and prefactor of wkb exponential and the energy splitting of ground state and the tunneling rate for excited states induced by thermally assisted quantum tunneling are obtained

    文章首先對磁性宏觀量子效應的理論和實驗方面作了簡單介紹，然後藉助于ulyanov和zaslavskii發展的一種等效勢描述方法，把外磁場沿難磁化軸方向時的自旋隧穿約化成在等效雙勢阱中運動的粒子，利用瞬子方法給出基態能級劈裂，最後利用周期瞬子方法分別計算了隧穿幅、能級移動以及wkb前因子，從而給出由於熱助量子隧穿引起的激發態的隧穿率。
  3. Further heliographic analysis by deltan scientists confirm that the rate of nuclear fusion within delta has begun accelerating at an exponential rate

    由德爾塔科學家製作的進一步的日光儀分析證實在德爾塔境內核劇變的速度已經達到了指數級。
  4. Global exponential stability of hopfield neural networks with time - varying delay and the estimation of decay rate

    神經網路的全局指數穩定性及衰減速度估計
  5. Simple genetic algorithm gets local minimization too easily and converges slowly. to solve these problems, adaptive crossover rate that has reverse hyperbolic rel ation with the numbers of iteration is designed, and adaptive mutation rate that has reverse proportion to the distances of parents and reverse exponential relat ion to the numbers of iteration is put forward. the practical simulation results show that the adaptive ga has greater convergence speed and larger probability o f getting the best solution

    簡單遺傳演算法存在著收斂速度慢、易陷入局部極小等缺陷.針對這些缺陷，本文設計出隨相對遺傳代數呈雙曲線下降的自適應交換率，並提出與父串間的相對歐氏距離成反比、隨相對遺傳代數指數下降的自適應變異率.實例驗證表明，具有自適應交換率和變異率的遺傳演算法在收斂速度和獲得全局最優解的概率兩個方面都有很大的提高
  6. Provided that stock price process is a jump - diffusion process, the rate of return and the volatility are functions of time, the pricing formula of exponential european jump option can be obtained with the principle of equivalent martingale measure

    摘要假定股票價格過程服從跳躍擴散過程，且無風險利率，股票收益率、波動率均為時間函數，利用等價鞅測度方法得出了支付函數為冪型的歐式期權定價公式。
  7. According to the problem that the recovery rate is traditional treated as a constant or an independent stochastic variable by the classical credit risk pricing and management model, and problem that the negative correlation between the default probability and recovery rate is always neglected, this dissertation gets the exponential and logarithm regression models of default probablilty and recovery rate based on some empirical researches, and improves on several broadly applied credit risk models, such as structural hazard rate model, affine structure model, convertible bond pricing model and credit metrics model, and introduce the negative correlation between

    針對傳統的信用風險定價模型及信用風險管理模型將違約回收率看成是一個外生的常數或是一個獨立的隨機變量，而忽略回收率和違約概率之間的負相關性這一問題，本文應用相關實證研究得到了違約概率和回收率的指數和對數回歸模型，並對應用非常廣泛的結構化風險率模型、仿射結構模型、可轉換債券定價模型和creditmetrics模型進行了改進和拓展，在新模型中應用指數和對數函數引入了這兩個變量之間的負相關性。
  8. We certainly can not continue, for long, with the exponential rate of growth of knowledge that we have had in the last three hundred years

    我們肯定不可能長時間地保持過去三百年來知識的指數增長速率。
  9. Exponential growth a type of growth in which the rate of increase in numbers at a given time is proportional to the number of individuals present

    指數生長：指定時間內，增長速率與個體數量的增長呈一定比例的生長類型。
  10. S - eeing that the analysis process is loaded down with trivial details an $ is difficulty extended in multivariate case. however, taking advantage of relation between multivariate failure rate and distribution density function built by the author and endowing conditional failure rates with reasonable value joint with the fatal shock meaning, we easily obtain three - dimensional and even n - dimensional exponential distribution

    鑒于該方法分析過程繁瑣，難于得到高維情形。本文另闢蹊徑，利用建立的條件失效率與多維壽命分佈之間關系，並結合致命沖擊含義賦予條件失效率合理的值，得到三維乃至一般的n維指數分佈。
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