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In Black-Scholes pricing model, there was five variables impact the option price that we take to be the input variable in artificial neural network, both Back-Propagation Network and Radial Basis Function Network are used. Base on the difference analysis, we find out another variable that can improve learning efficiency and affectivity.

为避免差异，以Black-Scholes模式中，五项影响权证价格之因子为输入变数，分别以倒传递网路与半径式函数网路建立模式，並藉差异分析找出可改善学习绩效之变数。

Figure 4.2 shows my average progress on the Black Knight, but Figure 4.3 shows the same progress without averaging out some of the details.

图4.2显示了我在Black Knight上的平均进展情况，图4.3表示的则是平滑处理之前的情况。

With their early roots planted in the Black Market club events of Glasgow, the veteran pair of Slam have long since figured out what the clubber knows and wants—their productions boast this same mastery of pleasure whilst pushing things forward.

或许正是由于早期在格拉斯哥的Black Market俱乐部内不断进行音乐表演的经历，对于Slam乐队的两位成员来说，他们深谙当今俱乐部乐迷的思想与需求，也正是本着迎合乐迷们的目的，他们的音乐在保证音乐娱乐性的同时也逐步推进整个舞曲行业的进步。

We use the data from BHP company in 1995-2001 and calculate the implied volatility. By comparing the implied volatility calculated from actual option price and the assumed volatility in the model, it is found that Black-Scholes Model does underprice the Out-of-The-Money options and overprice the In-The-Money options because of the wrong assumption on the volatility.

本文选择了澳大利亚BHP公司1995年-2001年其中五年的数据，从实际期权价格中计算得到隐含波动率，并把其与Black-Scholes模型中的假设波动率进行比较，最后可以发现，Black-Scholes模型低估了虚值期权的价格，高估了实值期权的价格，与一般的研究结果恰好相反。

The theatrical foundation of this paper is option pricing model. This paper focuses on the Black-Scholes model, details the basic postulation, principle and pricing formula. And it is pointed out that the postulation that volatility is constant can't reflect the varying market volatility. Violation of this postulation will lead to biased pricing results.

期权定价模型是本文分析的理论基础，文中以Black-Scholes模型为主，分析了期权定价模型的基本假设、原理与定价公式，指出波动率为常数的假设不能反映市场波动率的变化状况，对该假设的违背将使定价结果产生偏差，因此，波动率在期权定价中有重要的作用。

It seems only natural that you will reach out for the lamp during a black out and you do not have to ransack the house for the emergency torch at such inconvenient time.

只似乎自然您为灯将提供援助在黑色期间，并且您不必须为紧急火炬彻底搜索房子在这样不便的时刻。

Amy Winehouse's second album, Back to Black, is one of the finest soul albums, British or otherwise, to come out for years.

Amy Winehouse的第二张专辑Back to Black是英国最好的soul音乐专辑，或是近年来最好的。

The power system restoration plan after all black-out, also called black-start , is an important problem which ensure the power system securely.

电力系统全停后的恢复计划即黑启动，是保证现代电力系统安全运行的重要课题。

Till today, we could successfully handle problems of this kind. Berci is a full time musician. He plays in several bands, including one of the most popular Hungarian rock bands called Black-Out, and we haven't encountered significant problems yet. He is not likely to go abroad in the near future, but if any of us did, we could easily arrange for a substitute I think. All of us have one or more full-time occupations, but there is always a way to arrange things.

到目前为止，像这方面的问题我们都能应付得很好，Berci是一个全职的音乐家，他参与了好几个乐团，包括一个匈牙利最知名的摇滚乐团Black-Out，不过我们从没遇到过严重的问题，他看来应该不会在近期之内出国去，但即使我们任何一个人这麼做，我想我们可以很容易找到一个替代方案，我们所有人几乎都有一个甚至更多个的全职工作，但不论如何总是会有方法去安排事情。

Because there is no standard of fracture mechanics experiment for rocks, before applying the new method to study anti-plane shear crack, testing experiments had been carried out by using it on universal testing machine Instron 1185 to measure the values of Kic and Kiiic for rocks (Black Gabbro, Carrara Marble, Tennessee Sandstone), which had been obtained by using other experiment methods and technology before.

因为对于岩石还没有相应的断裂力学实验规范。因此在把本装置用于岩石反平面剪切裂纹研究之前，先用它对已经用其它技术测定了断裂力学常数，K〓，的岩石(Black Gabbro，Carrara Marble，Tennessee Sandstone)在Instron 1185万能试研机上用该装置进行了相应的K〓，K〓等测定。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。