分析动力学

After simplification of the Jou model,a diffusion dynamic equation, which was characterized with hyperbolic type, was obtained, then simulative analysis for three combined dimensionless parameters was done to research various diffusion behavior resulted from the change of model parameters.

经过对Jou模型的简化处理，得到了双曲型的扩散动力学方程，通过对模型中3个组合参数的仿真分析，研究了参数的变化可能导致的不同的扩散行为。

The goal is to simplify the neural-computing of biovision process modeled inthe Boundary Contour System of FACADE theory, and to extract subjective contour in.a new way. The procedure consists of DOG filtering, cooperative filtering,post-processing of cooperative cues and regrouping of endpoints, corresponding to theoriented edge filtering by simple cells, cooperative filtering by bipole cells and end-stopeffect formulated by hypercomplex cells in biovision system respectively. The last oneis an algorithm based on connection relation graph, which judges whether two keypoints should be connected according to their positions and orientations and thenconnect the key points that Should be connected to complete the subjective contour.

本文主要完成了以下工作：一是针对张量投票方法处理主观轮廓时出现的问题进行了改进，并依据矩阵的特征值摄动理论分析了该方法误差产生的原因以及迭代对其影响；二是用图像处理方法代替FACADE理论中复杂的细胞动力学方程，提出了一种基于视觉竞争合作机制的轮廓组织及缺口修复算法，该方法通过DOG滤波器组、合作滤波器组和张量投票等方法分别模拟视觉系统中的简单细胞有向滤波、双极细胞合作滤波和终端截断后端点重组等主观轮廓形成过程；三是提出了一种基于可连接关系图的算法解决轮廓组织及缺口修复问题，该方法在轮廓特征提取的基础上，根据关键点的位置和取向信息判断其可连接关系，进而连接具有可连接关系但没有实际连接的关键点，最终完成轮廓缺口的修复。

The characteristics of crystallization process of hypereutectic EN coatings were discussed from the viewpoint of thermodynamics and kinetics.

从热力学和动力学角度对过共晶成分的化学镀层的晶化转变过程进行了分析和讨论。

Objective To evaluate the clinical efficacy of TCD in diagnosing cerebrovascular diseases for patients with hyperlipemia.

目的 分析高血脂患者脑血流动力学的改变，探讨经颅多普勒对高血脂患者脑血管疾病的临床应用价值。

This paper deduces a theoretical population model in a urban system under a hypothetical condition of zero population growth,and analyses the population dynamics for the model.

本文推演了城市系统中在人口零增长假设条件下的人口迁移理论模型；对该模型的人口动力学特征进行了分析，并以仅由二个城市构成的最简单城市系统人口迁移为特例，研究了该模型的实际解释

By analyzing beam elements characteristics running on idler and pulley, adding belt viscous-elastic behavior and resistance behavior, and combining take-up model and reasonable boundary, it obtained belt dynamical equations in two-dimension model.

通过分析梁单元在托辊及滚筒上的运动特性，结合输送带的粘弹特性、运行阻力特性等参数的影响，再结合拉紧装置的振动特点及合理的单元边界条件，得到了输送带二维数学模型的动力学方程。

The forces acting on the droplet in front of the S/L interface during the solidification of immiscible alloys have been analyzed.

分析了难混溶合金凝固过程中作用在凝固界面前沿液滴上的力，建立了液滴与凝固界面相互作用行为的动力学判据。

Since the impenetrability condition and the interaction of adjacent contact pairs are all considered in this algorithm, the contact constraint and equilibrium equations of the system are better satisfied as compared with the traditional penalty method.

随着并行算法的发展，在不涉及接触问题的情况下，有限元并行计算已经取得极大成功，大多数工程问题均能够以超过85%的并行效率J决速完成动力学过程模拟和分析。

The structure of industrial robot is presented in this thesis, based on the trajectory that the manipulator would complete.

本文根据机器人末端执行器所要完成的轨迹特点，进行了轨迹规划，研究了解决该问题的机器人的结构，并做出了运动学和动力学分析。

The simulation outcome demonstrates that various control measures after April 20,2003 in Beijing and the public holidays starting from May lst to May 5th have a significant impact on containing the epidemic situation. The most dangerous days, around April 27, when the number of uncontrolled SARS patients in the society reached at its peak, can also be calculated. The SARS infectiousness number newly reported in Beijing has been at a low level since May 20. But simulation experiments describe that it may fluctuate with import of SARS infectiousness from outside Beijing, weakening of quarantine, more social activities, and so on.

同时应用动力学模型，对北京的SARS疫情进行分时间段的模拟与SARS实施控制因素影响分析，结果表明，2003—04—20以后一段时间内实行的各种控制措施，以及5月1日—5月5日的长假对于北京SARS疫情的控制是非常有效的；而4月27日左右北京市社会上未得到有效控制的SARS病人数达到高峰，是最危险的时期。5月20日以后，北京的SARS疫情基本保持在低发的平台期，但是如出现较多的外来SARS病例输入，而内部隔离强度又减弱、社交活动增加等情况下，北京SARS疫情可能会有一定程度的波动与反弹。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。