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- Based on the analysis of solving ambiguity , the thesis presents several algorithms for estimating doa and an algorithm for estimating frequency by using methods of subspace parameter estimation under sub - nyquist spatio - temporal sampling condition
论文在分析解模糊思想的基础上，给出空时欠采样下运用子空间类参数估计方法估计波达方向的几种算法和一种频率估计算法，并从性能上进行了比较和分析。 - Using film visual & audio language for reference and according to animation characteristic and aesthetics and visual psychology to analyze those elements which can make atmosphere shot great , and relevant knowledge . ( e . g
本文通过从理论上借鉴电影视听语言语法，结合动画自身的特性，根据视觉心理学和美学的规律，分析解构影视动画中气氛镜头的造型元素及其知识结构（如光影、色彩、镜头语言、音画关系、音效、剪辑等） 。 - In the model the film thickness in the passage was obtained at first using two phase flow theory ; then , similar analysis solution of concentration distribution of the pollutant in liquid phase and biofilm was obtained through mass component equation of pollutant in gas - liquid phases combined with the biochemical kinetic equation of mass transfer in biofilm and dismission of oxygen limited ; at last , the distribution of pollutant along the filter height and the waste gas purification efficiency were obtained
该模型首先运用两相流理论获得了通道内液膜厚度，然后通过污染物在气相、液相的质量组分方程，结合生物膜内的传质与不?虑氧限制的生化反应动力学方程，获得了污染物在液相和生物膜中浓度分布的近似分析解，最终得到污染物在气相中沿塔高的浓度分布及废气净化效率。 - In this paper the basic principle of the method of characteristics is described , and is constructed an explicit scheme for dam break simulation of one - dimensional dam instant all break waves flow of a low dam with rectangle section and a huge dam with trapezia section , and of two - dimensional dam instant part break waves flow with simplest space operator splitting
本文模拟了一维矩形断面低坝和梯形断面巨型坝瞬间全溃的洪水波演进过程，给出了与分析解的比较，并结合算子分裂的特征线法对二维瞬间部分溃坝时洪水波的演进过程进行了数值模拟。 - The first one : fitting together ultimate values of every dimensions in one dimension - chain one by one , educing many equations by itself , calculating results , and comparing these results of close dimension to find maximal and minimal values . the second one : projecting all dimensions on two preestablished axis , then providing the solutions to analyze whether every projected dimensions is increscent or decreasing , and synthesize the effect of every projected dimensions to close dimension , educing many equations by itself , at last calculating the result of close dimension . the third one : according to monte carlo analysis , getting every dimensions " values from every dimensions " tolerances at random time after time , simulating the actual circumstances of mass production using these dimensions , and calculating reasonable results of close dimension economically
鉴于这类系统在各大中小型企业的广泛应用与相对滞后的研究水平，本文提出了三种新的能切实地解决目前尺寸链计算机辅助分析解算中存在的各种难题的设计方案，第一种方案将尺寸链中各组成环能取的极值组合起来，自动列方程组，求解每个组合情况下的封闭环尺寸，最后比较这些结果，得出封闭环的最大最小值；第二种方案将尺寸链各组成环向预先设定好的两个方向投影，之后再分析各尺寸环投影分量的增减性，并且提供了组成环两个方向上的投影分量增减性不一的复杂情况下的解决办法，综合组成环各投影分量的增减性，然后自动列出方程组，最后根据各组成环的投影分量以及所列的方程组来确定尺寸链封闭环的尺寸；第三种方案以蒙特卡洛法为原理，在尺寸链各组成环的取值范围内使用计算机产生大量随机数，模拟实际大批量生产中的零件尺寸分布情况，以更经济更合理的方式分析、计算封闭环尺寸。