查询词典 exponential

Under the hypothesis of stock price submitting to exponential Ornstein-Uhlenbeck process ,we solve the formula of pricing of stock and analyse the kind of the option formula, and then aiming at the blemish to suppose to interest rate before and considering the relation of the fluctuation of interest rate and the fluctuation of stock price , we bring up the model of the market interest rate and focus on analyzing the effect of the fluctuation of market interest rate on the option price based on the model.

本文首先在股票价格服从指数Ornstein-Uhlenbeck过程模型假设下，求解了股票的定价公式，分析了期权公式的性质，然后针对以往对利率假定的缺陷，考虑到市场利率波动与股价波动的相关性，提出了市场利率模型，并在此基础上，着重分析了市场利率的波动对期权价值的影响，求得了适合于期权有效期较长情形下的期权定价公式，并将该公式通过实例与著名的Black-Scholes期权定价公式进行了深入比较。

The method develops a reliability growth model to describe the development process of exponential life system for the failure censored testing case, and presents a Bayesian sequential testing procedure to decide whether testing should continue or be terminated during the development.

该方法建立了描述指数寿命系统失效截尾试验的可靠性增长模型，并依据产品研制过程中产生的多阶段试验数据，给出了系统失效率验前分布的确定方法，进而构建了系统失效率统计检验的Bayes序贯模型，实现了对具有可靠性增长的系统可靠性指标的假设检验。

The Establishment and Application of Evaluation Criteria System for Search Engines Zhu Qinghua and Du Jia ( Department of Information Management, Nanjing University, Nanjing 210093)According to the features of search engines, this paper establishes a set of evaluation criteria system for search engines by using Delphi Method online, and calculates the weight of these evaluation criteria by Analytic Hierarchy Process based on exponential scale.

本文结合搜索引擎的特点，采用网上特尔菲法进行专家调查以确定搜索引擎评价的各项指标，并利用基于指数标度的层次分析法确定各项指标的权重，从而构建搜索引擎评价指标体系。

The Logarithm Process model adapts to describe early failure phase and random failure phase, the Exponential Process model fits for different phase.

其中对数过程模型可用于可修系统使用早中期的情形；指数过程模型可用于描述可修系统各个不同使用阶段的故障统计规律。

The formulas of the pricing European option are obtained for the stock whose price process is driven by exponential O_U process by the above tw...

证明了在指数O U过程模型下保险精算定价是一有套利定价。

A new discrete reaching law is presented to improve the reaching process of discrete exponential reaching law.The discrete-time variable structure control system designed by this reaching law can not only weaken the chattering and control the system state approach to zero diminishingly,but also keep the basic property of quasi-sliding mode which can cross the switching surface step by step.This method improves the reaching process and enhances the control quality of the control system.

为了改善离散指数趋近律的趋近过程，提出了一种新的趋近律，利用该趋近律设计的变结构控制器，不仅能够大幅度削弱抖振，使系统运动最终趋于原点不存在稳态振荡，而且能使系统的准滑动模态保持步步穿越切换面的基本属性，有效地改善了趋近过程，提高了控制品质。

The stochastic exponential growth model and birth-death process model were established to analyze the extinction risk and population viability with detected data of wild Pere David's deer populations.

利用野放麋鹿Elaphurus davidianus种群检测数据建立了随机指数增长模型与生死过程模型，并对种群的未来状态、灭绝风险及种群生存力进行了分析。

Under the assumption that the expected rate μS(t , volatilityσS(t are functions of risk asset S, and stock pricing process respectively driven by a general O-U process and an exponential of a Levy process, we obtain the accurate pricing formulas and put-call parity of European option. In the end, assume that riskless rate is given, we deal with pricing formulas of European option on foreign currency and apply the approach to the pricing of the convertible bond.

利用保险精算方法给出了股票价格遵循广义0一U过程模型的欧式期权的精确定价公式和买权与卖权之间的平价关系以及股票价格过程遵循指数Levy过程的定价模型，最后推导出利率确定情形下外汇期权的定价公式，并且给出了保险精算方法在可转换债券定价中的应用。

Of many steady testing work that have been done at Shunan gas reservoir in Maliuchang gas field, data process are respectively conducted by traditional multi-point binominal or exponential process data and one point method for deliverability equation.

在蜀南气矿麻柳场气田进行了大量的稳定试井工作，分别用传统的多点法二项式、指数式处理资料，以及用"一点法"产能公式进行资料处理，发现两者求出的气井绝对无阻流量偏差达到30%-90%，甚至更高。

Inactivation of Calcium currents were fitted by two exponential process, which inactivation time constant were over 1000ms and less than 90ms respectively. These properties resembled"L"type and"N"type Calcium currents describled in chick sensory neurons.

用双指数曲线拟合钙电流失活过程，发现它由两种不同的电流成份组成，其失活时间常数分别大于1000ms和小于90ms，它们的特点和鸡背根神经节中"L"型和"N"型钙通道电流相似。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

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