A time-segment method is put forward for the problem of time-lapse seismic, and combined with the injection method, a fast finite-difference injection method is proposed. The results of numerical tests indicate the method's effectiveness. 针对时间推移地震问题,提出了时间分段思想,并在注入法基础上,给出了快速的有限差分注入法,数值模拟结果表明了方法的有效性。
Given complex background, slight target, and no shape outline, this dissertation put forward a difference detection method based on background prediction. 针对背景复杂,目标模糊、弱小无法获得形状特征,本文提出了基于背景预测的差分检测方法。
This paper puts forward two proposals of cost analysis and control, the cost difference analysis and the cost driver analysis. At the same time, it gives the corresponding practical application method, Standard Costing and Activity Based Costing. 提出了成本差异分析和成本动因分析两种成本分析和控制的理论,同时举出了相应的实践方法&标准成本法和作业成本法。
Forward simulation of ground penetrating radar and its finite difference method wave equation migration processing 探地雷达的正演模拟及有限差分波动方程偏移处理
This paper puts forward a kind of fast and effective method of muting value based on the curvature formula, and it can automatically discern mutating data using half two rank difference method and get rid of the false data. 该方法以曲线的曲率公式为理论基础,用相邻点间的半二阶差分对突变点进行自动识别,并将其剔除。
The calculation of response spectrum and Wood-Anderson seismogram can be considered as the response of single-degree-of-freedom ( SDOF) system to ground motion. From the viewpoint of this, the forward difference method for calculating the SDOF system is analyzed in this paper. 基于地震动参数如反应谱及Wood-Anderson地震图的计算可归结为单自由度系统的地震反应分析这一基本思想,本文分析了计算单自由度系统地震动力反应的单边差分方法。
Putting forward incentive institutions for intellectual capital of enterprises and analysing the difference and range of suiting of different incentive institutions by systems analysis method and comparative analysis method. 运用系统分析法和比较法提出了企业智力资本按价值进行分配的激励制度,并分析了不同激励制度的异同及适用范围。
Two methods of flow measurement were put forward: the method of constant temperature difference ( temperature difference between heated resistance and flow was constant) and the method of constant current ( heated current was constant). 提出了测量质量流量的两种方法:恒温差法(即加热电阻与被测流体温度差恒定)和恒流法(即加热电流恒定)。
The accuracy and the existent problem of forward difference method are analyzed on the basis of comparing the transfer function of recursive formula with theoretical transfer function. 从递归公式传递函数与理论传递函数比较的角度研究了计算中的精度及所存在的问题。
Put forward the system project of realizing wireless location through building system model of estimating of difference arriving time, and then present a hyperbola lacation algorithm to adapt digital signal processing with the location method. 通过建立差分到达时间估计的系统模型,提出了一种实现无线定位的系统流程方案,并针对采用这种定位方法给出了一种适合进行数字信号处理的高效双曲线定位算法。
The paper puts forward the coupling model of guide water passageway one dimensional flow model and fissured rock mass filtration three dimensional flow model on the basis of crevice water numerical simulation study current situation. The solution is found by the finite difference method. 文中在裂隙水数值模拟研究现状基础上,提出导水通道一维流模型与裂隙岩体渗流三维流模型的耦合模型,并采用有限差分法求解。
Sum up fluctuate and error arose by market factors, put forward simple method and application to wipe off yawp based on the ARIMA difference method. 总结市场因素引起的波动和误差,提出了基于ARIMA(差分方法)去噪的简单方法和应用。
The discrete time approximations of the electron and hole density equations are established by using the Laplace modified forward difference and the characteristic method, and are solved in spaces possessing reproducing kernels. 采用Laplace修正的向前差分和特征线法对载流子浓度方程施行时间离散近似,并在具有再生核的函数空间中求解。
Three dimensional forward modeling has been realized by using finite difference numerical modeling method. 论文采用了有限差分数值模拟方法实现了磁电法的三维正演,并在正演模拟的基础上进行了相应的研究和探讨。
The way is put forward for improvement on arithmetic based on envelope mean. The validity and accuracy of phase difference method is analysed and validated. 提出了基于包络均值法的改进算法;分析并验证了利用相位差分法进行瞬时频率估计的有效性和精确性;给出了进行局域波分析,信号采样频率的选择标准。