The ray tracing technique has been demonstrated to be promising for indoor radio propagation modeling by many researchers.
射线跟踪技术是一种有效的室内无线传播建模方法。
A whole trace-process framework of requirement change is drawn based on three tiers which are propagation & modeling, propagation path, and trace approach of requirement change.
基于需求信息传播与建模、需求变化信息传播路径和需求变化信息跟踪方法三个层面，阐述了软件变化跟踪的整体过程框架；
Model parameters have the important effects on three-dimensional distinct element code (3dec) modeling of the stress wave propagation and attenuation in jointed rock masses as well as other codes.
与其他数值软件一样，用三维离散元程序(3dec)模拟应力波在节理岩体中的传播和衰减时，模型参数对模拟结果有很重要的影响。
Key issues of collaborative assembly modeling are the assembly interface representation scheme and the real-time design modification propagation mechanism.
装配接口表达方案和协同装配模型修改实时传播机制是协同装配建模研究的重点。
An approach for modeling rock crack propagation using discontinuous deformation analysis (DDA) method is presented.
提出一种用非连续变形分析方法模拟岩石裂纹扩展的方法。
Finite element method is an useful tool for modeling seismic wave in complex medium, it simulates seismic wave propagation quite realistically and displays seismic wave fields in quite detailed way.
有限元法是复杂介质地震模拟的有力工具，它能比较客观地反映地震波的传播过程，比较细致地再现地震图像。
The results show that the present approach is valid for modeling the propagation of a solitary wave.
结果表明，本模型对计算孤立波的传播是有效的。
Courses include acoustic and seismic wave propagation, seismic modeling, fluid hydraulics, and related subjects.
课程包括声波和地震波的联动、地震模型、水力学和相关其他。
In the process of modeling ANN, in order to accelerate the back-propagation learning process, the inputs of the ANN are processed in advance by principal component analysis.
在人工神经网络建模过程中，采用主成分分析的方法对网络的输入数据进行预处理，显著提高了网络的学习速度。
Through producing the model of delay propagation and modeling the Bayesian Net, the impact of arrival-delay on departure-delay between related flights is discussed.
通过建立延误波及模型和贝叶斯网络模型，探讨了相关航班中，进港延误和航班取消对离港延误的影响。
Through producing the model of delay propagation and modeling the Bayesian Net, the impact of arrival-delay on departure-delay between related flights is discussed.
通过建立延误波及模型和贝叶斯网络模型，探讨了相关航班中，进港延误和航班取消对离港延误的影响。
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