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In this paper Fractional Brownian Motion model is employed to describe the changes of the prices of financial instrument.

利用分数维布朗运动模型来描述金融价格的变动。在假定标的资产价格服从分数维布朗运动的新模式下,讨论标的资产有红利支付时的欧式差价期权的定价公式,并给出计算公式

In this study,the influence of mass fraction of three common dispersants MC,CMC(carboxy methyl cellulose sodium) and HEC on the dispersion of short carbon fibers in water was investigated prior to the manufacture of CFRC.

该研究探讨了制备CFRC前期阶段碳纤维分散这一关键环节中,甲基纤维素、羧甲基纤维素钠、羟乙基纤维素3种常用分散剂的质量分数对短碳纤维在其水溶液中分散性的影响;分析了一定温度下分散剂质量分数和溶液黏度的关系;从纤维素结构出发,解释了不同分散剂的分散效果。

The performance of traditional particle filter would be degenerate in alpha stable distribution noise.A new fractional lower order particle filter based on fractional lower order model was presented in this paper,and the detailed operation algorithm was proposed.

在alpha稳定分布噪声下,传统的基于二阶模型的粒子滤波器性能会出现退化,文章提出了一种基于分数低阶模型的分数低阶粒子滤波器,并给出了具体的运算公式。

For the diffractive optical element realizing beam shaping in the fractional Fourier transform domain,the transform matrix calculated by the discrete sampling points was compared with that calculated by the Fresnel integral,and the discretization error of the intensity distribution on the output plane was qualitatively obtained.

针对分数傅里叶变换衍射光学光束整形器件,比较了按离散点与按菲涅耳积分计算得到的变换矩阵间的差距,从中分析得出按离散点计算的变换矩阵引入的离散化误差与分数傅里叶变换系统参数的关系。

This distinctive action is not only to the shallow epiphyte but also to the deep epiphyte. The inhibited fungi efficiency of 0.1% acid reaches 90% and the 0.5% clotrimazole is 68%. And they also have inhibition action to grain-negative and gram-positive bacteria.

体积分数为0.1%的白果酸抑制真菌的有效率达90%,而体积分数为0.5%的克霉唑抑制真菌的有效率仅为68%,同时该提取物对各种革兰氏阴性和阳性细菌也均有抑制作用。

The testing results showed that the optimal reduction conditions are 1320℃ for 120 min and the proportional mass fractions of activated carbon powder and the additive A are 3% and 5%, respectively. The additive A accelerates the aggregation of metallic grains so as to make the enriched metallic grains easier for magnetic separation. The mass fraction of maximum nickel in ferronickel alloy and nickel recovery in the laterite-nickel ore are 8.31% and 95.44%, respectively. Metallic nickel is thus enriched.

研究结果表明,最佳反应条件:还原温度为1320℃,还原时间为120min,还原剂与添加剂的质量分数分别为3%及5%;添加剂可促进金属晶粒的聚集,富集的金属晶粒更易于磁选分离;还原产品镍铁合金中镍的质量分数可达8.31%,矿石中镍的回收率可达95.44%,金属镍得到了富集。

The laminar flamelet model has been widely used in the recent years, but its application to the internal combustion engine is still scarce. The domestic investigation in this aspect is almost blank.

本文作为初步尝试,将层流小火焰模型应用于典型的柴油机扩散燃烧过程,以一台直喷式柴油机为对象,分别以碳十二烷与空气的单步反应和正庚烷与空气的多步反应为机理,以混和分数为自变量,以标量耗散率为参数,建立相空间中组分质量分数瞬时值及温度瞬时值的二维层流小火焰数据库。

For Texaco water gas,the methanol synthesis is based on formyl route under high concentration of CO(15%-16% in volume).

认为合成甲醇在相同的工艺操作条件下,由于反应气体成分的不同,造成了反应途径的区别,即焦炉气制甲醇在高CO2的条件下(体积分数6%~9%),甲醇合成反应主要是以甲酰基途径合成;徳士古水煤气制甲醇在高CO条件下(体积分数15%~16%),甲醇合成反应主要是以甲酸基途径合成。

Satisfactory numerical validation is presented including a preliminary investigation of time step effect and the value of fractional derivative order for different types of fractional differential equations.

数值算例对不同的分数阶微分方程进行了讨论,探讨了不同的分数阶和时间步长对计算结果的影响,并将计算结果与文献中相关算法的计算结果进行了比较。

The decline of approximate 6 points (5.5 to 7.3 points) in physical capacity and approximate 4 points (2.9 to 5.1 points) in psychological well-being were responsive to the level changes of the walking, transferring, bathing, toileting, or controlling bladder and bowel movements from "independent" to "completely dependent."

生理范畴的分数下降约6.0分(5.5至7.3分)、心理范畴的分数下降约4.0分(2.9至5.1分)反应出走路、上下床铺、沐浴、上厕所、大小便控制这五项日常生活活动能力的状态从&不需要帮助&变成&完全需要别人帮助&。

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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。

I'm running my simile to an extreme.

我比喻得过头了。