查询词典 zero method

Firstly, stability of a hypersonic boundary layer on a blunt cone with small nose bluntness at zero angle of attack has been investigated and the transition location was predicted by the e-N method.

本文研究零攻角和小攻角、超音速和高超音速、尖锥和小钝头锥边界层的转捩预测问题。

Latter, the relaxed proximal point algorithm was given as a modification of the original method. The proximal point algorithm only gives one zero of the operator in the domain of it.

求解极大单调算子的零点的一个经典算法是邻近点算法，邻近点算法将原问题转化为一系列好条件的子问题。

The every frame image was transformed by dyadic discrete wavelet and the characteristic of wavelet transform coefficient was analyzed. Low frequency coefficients were analyzed by fast principal component method which quoted Gram-Schmidt orthonormalization procedure in fixed-point algorithm then distilled principal component and reconstructed the low frequency coefficients. To suppress image noise, the high frequency coefficients were equated to zero.

该算法对热图像序列中的每帧图像进行二进制离散小波变换，提取出低频部分的系数；对低频系数进行改进PCA分析，通过固定点算法并引入Gram-Schmidt正交化过程求解特征向量；令高频系数为零，抑制图像的噪声。

So this paper selects national debts as our studying objects. By using principal component analysis method to study the zero coupon yield curve, we find that the movement of the curve yield can be simulated by two factors mostly, that is parallel shift and rotation. Then we quantitative them and get "synthetic parallel shift" and "synthetic rotation".

因而，本文选择了国债作为研究对象，对国债的即期收益率曲线进行主成分分析的结果表明，收益率曲线变动的总体方差绝大部分来自于两个因子的贡献，即水平因子和倾斜因子，本文对这两个因子进行量化处理，得到"综合的平移"和"综合的倾斜"，并在此基础上建立了两综合因子法对债券组合的VaR估值模型。

The first design is to change the recoding method, and increase the probability of zero partial product by 6.25%. Then we can speed up the asynchronous booth multipliers based on the characteristic of asynchronous circuit.

第一种改良，则是改良加码器的部分，而使产生的部分乘积为0的机率增加，可到达6.75％的增加，将此种改良用於非同步乘法器的设计，可使得速度上得到14.8％的加速。

On the basis of an analysis of the defects of ground permeameter,the significance of the method of zero flux plane in the dry Northwestis pointed out.

在分析了地中渗透计方法缺点的基础上，阐明了引进"零通量面"方法研究西北干旱地区包气带水分运移规律的意义。

Then the zero-crossing detection method and the DFT algorithm adopted in the phasor measurement are discussed in detail.

接着，介绍了同步相量测量的信号过零检测法、定频采样和变频采样的离散傅立叶法。

The instrument simultaneously sample for three phase voltage and current. Rotary photoelectric coding switch and LCD are used for human-computer interaction. it makes the interface compact and efficient. Utilizing the function of positive and negative edge trigger of the programmable counter array unit in MPU, signal zero-cross is captured for the phase detected based on double way. The software synchronism sampling method based on real-time parameter self-optimizing minishes period truncation error, and the measurement accuracy is improved. The digitization power measure imports traditional two-unit and three-unit methods and expands application range of the instrument. The capacity is discriminated by soft ware table-look-up on the load loss. The value of a quantity is converted to the value when reference temperature (75 ℃) from test temperature.

该仪器具有以下特点：仪器对三相电压电流同时采样；基于旋转式光电编码器和液晶显示屏的人机交互界面简洁而高效；可编程计数器阵列PCA"捕获"信号的过零点用于双向过零平均鉴相，得到准确的相位差和周期；基于实时参数自寻优的软件同步采样，有效地减小了周期截断误差，提高了测量准确度；数字化功率测量引入了传统的二表法和三表法，扩展了仪器的使用范围；实际容量根据负载损耗用软件查表的方法来判别；测量值已从试验温度折算到了参考温度(75℃)时的值。

A new method is advanced to calibrate the sensitivity and zero point in multi-passage sphere diameter gauge with two standard spheres.

提出了用两只标准球同时标定具有多个测量通道的球径测量仪各通道的灵敏度和零点的一种新方法，避免了各通道单独标定的繁杂过程。

With regard to the software design, we realized the software filter for anti-intermixing; and we use the Fast Fourier Transform Algorithm to analyze the harmonic of the voltage and current; also we analyze the method of calculating all the parameters of the power system, fault component and positive, negative, zero sequence.

软件算法方面，系统对信号采用了抗混叠软件滤波，并采用传统的快速傅立叶变换，对采样的电压和电流信号进行频谱分析。论文中还详细分析了电网各参数，故障分量以及正、负、零序分量的计算。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。