查询词典 volatility

In source collision induced dissocation technique was used to study atrazine and diazionon,two pesticides with low volatility,high polarity and thermal lability.

气相色谱法和气相色谱质谱法在农药残留分析中广为应用，但在分析热不稳定、强极性和难挥发农药时往往需要结合衍生法。

Financial-market volatility, in and of itself, does not require a change in the target federal funds rate, said Mr Lacker this week.

本周 Lacker说金融市场内部及自身波动，并不要求改变联邦基金利率的目标值。

And the evaluation effects of China's Stock Market's volatility by different ARCH models from different point of view are compared. In addition, by using two mixed distribution models, the leptokurtosis and fat-tail of stock return are examined. Based on the above analysis, an improved Laplace distribution model is proposed. Furthermore, the root generating non-Gaussian return distribution of the stock market ? is expounded from the perspective of both economy and capital market.

首先分别从分布和波动性模型出发，研究中国股票市场收益分布特征与波动性特征：从ARCH族模型出发，考察了中国股票市场波动性的异方差、集群性、杠杆效应以及长记忆性特征；从两个混合分布模型出发，结合随机模拟考察了收益分布的尖峰、厚尾和偏态特征，并提出了改进型LapJace分布。

Since Leptokurtosis, skewness and fat-tail are always used to depict market risk, this paper introduces the improved Laplace distribution to risk management of stock portfolio. Empirical results show, improved Laplace distribution and asymmetric Laplace distribution are similar for estimating Leptokurtosis, while improved Laplace distribution is better for estimating skewness.In order to analyze the correlation between return distribution and volatility, the thesis uses ARCH-M Models to simulate the return series of China's Stock Market and developed markets ao as to discover the relation between investment return and time-varying risk.

对尖峰、厚尾、偏态的刻画有助于正确估计市场风险，本文将改进型Laplace分布引入到股票组合的风险管理中，实证结果发现，改进型Laplace分布和非对称Laplace分布对尖峰、厚尾的刻画效果接近；而非对称Laplace分布对负偏性考察不足，改进型Laplace分布的拟合结果能够准确地反映股指收益的负偏态，这也正是改进型Laplace分布相对于传统的非对称Laplace分布的优势所在。

Empirical results show, improved Laplace distribution and asymmetric Laplace distribution are similar for estimating Leptokurtosis, while improved Laplace distribution is better for estimating skewness.In order to analyze the correlation between return distribution and volatility, the thesis uses ARCH-M Models to simulate the return series of China\'s Stock Market and developed markets ao as to discover the relation between investment return and time-varying risk.

在分布和波动相关性建模方面，本文利用ARCH-M族模型来模拟我国股市和成熟证券市场的收益序列，以揭示股票市场中投资收益与时变风险的关系，并对我国股市和成熟市场的风险补偿系数以及投资者风险承受能力进行比较研究。

These stocks' liquidity is very high, and their volatility tends to be good.

这些股票的流动性很高，它们的波动性很好。

According to the mean-field simulations of the model,the time series of logarithmic price returns exhibit bursting typical of volatility clustering.

但是目前现有的模型在描述现实市场中一些经验现象时，缺少详细合理的经济解释，或者只是描述了现实市场中的部分性质。

Extreme volatility. Your magnetic North Pole is shifting its

你们地球的北磁极，在以一个飘忽不定，不可预测的方式移动。

Due to the volatility and limited size of a computer's main memory, most computers have additional memory devices called mass storage systems, which include magnetic disks,CDs,and magnetic tapes.

由于计算机主存储器的易失性和容量的限制，大多数的计算机都有附加的称为大容量存储系统的存储设备，包括有磁盘、 CD 和磁带。

The advantages of mass storage systems over main memory include less volatility, large storage capacities, low cost, and in many cases, the ability to remove the storage medium from the machine for archival purposes.

大容量存储器系统的好处在弥补主存储器较少占用率，大存储容量，低成本等。在许多情况下，随意的删除移动是很方便的。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。