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The data mining algorithm, which calculates the radius of gyration of unit-mass point around the centre of mass in the phase space, can distinguish the fault parameter from the chaotic time series output by the tested system.

提出了一种基于相空间重构和数据挖掘算法的复杂电子系统故障诊断方法，采用计算相空间中各个单位质点绕其质量中心的旋转半径的数据挖掘算法识别被测系统的故障参量。

This paper analyses the influence rule on tooth-layer permeance constant component and harmonic component with tooth-layer parameter and magnetometive, It offers basis to calculates the performance of the linear stepper motor with analytical method and optimized design for linear stepping motor.

最后，运用齿层比磁导函数化方法对直线步进电动机的最大电磁推力特性进行了定量研究，分析了永磁体参数、齿层参数对混合式直线步进电动机永磁体工作点的影响，分别计算了不同永磁体参数和齿层参数时的最大电磁推力特性。

Derives the formulae for calculating the distortion and stress on the acting surface of flexspline load in the drive process of the harmonic gear drive with three-wave wavegenerator;(2) analyzes and compares the performance of plastic and steel products under light load drive and calculates the probably reached limit of drive ratio for both types of flexsplines under the same load;(3) applies the harmonic gear drive with three-wave wavegenerator to the small-sized multiple-revolution electric device of valves by taking into consideration of the low limit of the drive ratio for the harmonic gear drive with three-wave wavegenerator made of plastics, improves the design on the main drive mechanism of the traditional small-sized multiple-revolution electric device of valves, and validates through examples the feasibility for the harmonic gear drive with three-wave wavegenerator made of plastics to be applied to the small-sized multiple-revolution electric device of valves. Finally the author performs calculations on the two types of the flexsplines of the harmonic gear with three-wave wavegenerator by using the finite element method and analyzes the causes for the errors.

本文根据三波谐波齿轮传动的运动变形特点，采用弹性薄壳的力矩理论，推导了三波谐波齿轮传动柔轮载荷作用面上的变形及应力计算公式；分析比较了轻载传动情况下塑料和钢材的性能，计算了塑料制谐波柔轮和钢制谐波柔轮在相同载荷情况下可能达到的传动比极限；对塑料制及钢制三波谐波齿轮柔轮进行了有限元计算，分析了产生误差的原因；针对三波塑料谐波齿轮传动比极限低的特点，将之运用于小转矩多回转阀门电动装置中，对传统的小型多回转阀门电动装置的主传动机构进行了改良设计，并通过实例验证了三波塑料谐波齿轮传动在小转矩多回转阀门电动装置中应用的可行性。

This method basic thought is: First, extracts the time and the place phrase which in the news essential factor the event occurs; Then, through extraction time and place phrase extraction news content; Finally, through calculates their similarity according to the study news content to judge the news homepage the heavy multiplicity.

该方法的基本思想是：首先，抽取新闻要素中关于事件发生的时间和地点短语；然后，通过抽取的时间和地点短语抽取新闻的内容；最终，根据学习的新闻内容通过计算它们的相似度来判断新闻网页的重复度。

This approach will enable the different investors bear the risk, and access to the corresponding rewards. The first two methods did not consider investors attitudes of risk and the expected price of the spot or futures. However, the hedger of the maximize effectiveness calculates the optimal hedge ratio through the establishment of investors utility function and calculus.

前面两类方法都没有考虑投资者的风险态度和对现货或者是期货价格走势的预期，而效用最大化套期保值通过建立投资者的效用函数，再利用微积分求最值的方法来计算最优套期保值比率。

In this paper, based on an optimum difference operator for spatial differential given by Holberg, an optimum difference method of modeling crosswell elastic wavefield is put forward, which adopts the staggered-grid technique and calculates the wavefield at different grid points. When the half length of optimum difference operator is taken as four to six points, the required number of grid points per wavelength equals to three, crosshole elastic wavefield numerical modeling can attain satisfied accuracy.

本文以Holberg提出的一种空间微分的最佳差分算子为基础，采用交错网格技术，提出了一种模拟井间弹性波场的最佳差分法，该方法能在大空间网格点上得到精确的波场值，当最佳差分算子的半长度取4～6个点，每个波长只采3个样点时，井间弹性波场的模拟就可以得到满意的精度，其计算速度比常规有限差分法至少快一个数量级。

This paper calculates the 3D magnetotelluric responses in homogeneous half space using integral equation method and apply the damped least square method to inverse the resistivity of 3D model.

采用积分方程法计算均匀半空间中三维异常体的大地电磁响应，然后利用阻尼最小二乘法反演得到地下三维异常体电阻率分布。

There is HotFix functionality that automatically calculates and stores important satellite information for faster satellite acquisition.

有烫功能，自动计算和储存重要的卫星信息更快的卫星获取。

According to USACE hydrologist Stan Simpson, the organisation carefully plans the river's flow in order to meet the changing needs of the fish; software provided by TNC calculates how much water to release according to the time of year and weather.

美国陆军工程兵团淡水管理专家斯坦。辛普森先生说，他们细心地调整旱季和雨季、春天和冬天鱼类不同需求下的水量。用大自然保护协会提供的软件可以计算出不同时期、气候情况下的放水量。

The hydrometeor information from the cloud model is then used as input into a 3-D microwave radiation transfer model that calculates the upwelling radiance received by the rediometer aboard the satellite.

将云模式模拟的水汽凝结体信息作为三维微波辐射传输模式的输入值，计算星载微波辐射计接受到的上行辐射。

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。