查询词典 fractional

Keywords: molecular dynamics simulation; fractal theory; fractional Brown function; vapor-liquid interface.

中文关键词：分子动力学模拟；分形理论；分数布朗函数；分数维数；汽液界面

Fractional fourier transform ; hermite function ; time frequency analysis

分数阶傅立叶变换； Hermite函数；时频分析

The proposed approach extends the basic theory of FBM to the discrete case and investigates characteristics of auto-correlation function based on fractional Gauss noise.

提出了一种基于分数高斯噪声增量及其自相关函数的分形维数估计的新方法。

The Dinkelbach-type algorithm for generalized fractional program whose objective function is composed of infinite fractions was generalized. Properties of a parameter program and convergence of a class of generalized algorithm were discussed.

就一类目标函数中有无限个分式的广义分式规划问题，在已有的相应的Dinkelbach型算法的基础上作了进一步的推广，使其成为一簇算法；讨论了一个参数规划的性质和该簇算法的收敛性。

H.264/AVC video coding process, fractional pixel matching function, non-original.

h.264/avc 视频编码程序，实现分数像素匹配功能，非原创。

The fractional structure of the objective function maximizing RAROC makes it difficult to be solved. We noticed that in real financial practice, the expected return function and risk function of the portfolio are often homogeneous with the amount of investment.

根据RAROC的分式结构，以及回报函数和风险函数通常是关于投资额的齐次函数，将分式优化问题转化为对其分母的最优化。

The results show that the stock market returns and volatilities in China have long memory and persistence although they are not as strong as that of American stock market; The memory of Shanghai stock is stronger than that of Shenzhen stock; The autocorrelation function of a fractional integration model can fit the sample autocorrelation much well.

结果表明：中国股市收益率与波动性具有长记忆性，尽管收益率的长记忆性不如美国股市强；上海股市的记忆性明显强于深圳股市；分数可积模型较指数衰减自相关函数能更好地拟合样本的自相关系数

Because one need to search H in the range of 110, 1 and calculate the autocorrelation function many times, the concise formula of autocorrelation function of discrete fractional Gaussian noise is used to improve the processing speed. Simulation results have shown that it can estimate H accurately and more effectively than conventional LMS based on autocorrelation ftinction for both pure fractal signal and noise-corrupted fractal signal.

接着我们研究了在白噪声背景下进行分形参数估计的相关函数法，针对其在计算中需反复使用自相关函数的特点，提出了一种改进的相关函数法，实验表明，改进的方法在精度上几乎没有损失，而大幅度地提高了计算效率。

Aim\ To study the asympototic estimation for extinction probability in two environment states Smith Wilkinson BPRE with fractional linear probability generating function.

目的 探讨具有分式线性概率母函数两环境状态 Smith-Wilkinson BPRE灭绝概率的渐近估计。

One position control system is introduced as the objective controlled by FOC. Based on Mittag-Leffler function, the fractional order control system with full memory length is adopted as evaluation criterion, and an approximation performance function of discretization methods is proposed. Analyzing the time domain error and approximation performance, the investigation to various discretization methods is carried out comparatively in detail.

引入一个位置控制系统作为分数阶控制对象，将Mittag-Leffler函数的全记忆长度分数阶控制系统作为评估基准，提出了一种离散算法的近似性能函数，通过时域误差分析以及近似性能分析，对比研究了分数阶微积分算子的数字实现方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。