查询词典 dynamical

The movement of the Near-Earth Asteroids has been roundedly studied in this dissertation by means of different viewpoints, such as the selection of the dynamical models and the adoption of the numerical methods, then the problems of the NEAs' close Earthapproaching, together with the resonances during their orbital evolution, have also been investigated from numerical and theoretical viewpoints.

本文从不同的角度较全面地研究了近地小行星的运动问题，其中包括了对力学模型的选取、数值方法的采用以及从数值和理论的角度研究了近地小行星与地球的交会问题以及近地小行星轨道演化中出现的共振问题。

Secondly, I study the expermets about the heat-moisture migration, analyze moisture transfer and correlation theory of the temperature field in the frozen soil , analysis comparally the temperatue field ,the moisture field, dynamical sources , and the water transport rate and so on of the moisture and temperature transfer both in the soft rock materical and in the frozen soil, gained the consistency and the difference in the heat-moisture migration about the soft rock materical and the frozen soil under the same condtion, the heat-moisture migration of the soft rock materical is accord with the correlation theory of the capillary porous colloid's heat and mass transfer, the theory caused moisture transfer of frozen soil is applied samely in the soft rock materical.

其次，研究冻土相关的水热迁移实验，分析了冻土水分迁移及温度场相关的规律；通过与冻土水热迁移对比分析软岩类材料的水热迁移的温度场、水分场、动力源和水分迁移速度等，得出了软岩类材料与冻土在同一条件下的水热规律的一致性和差异性，软岩类材料水热迁移也符合毛细孔隙胶体介质之热-质迁移的相关理论，引起冻土水分迁移的吸附-薄膜理论依然适用软岩类材料。

Based on the seismotectonic and seismicity environment in Bohai Sea and its adjacent regions, and the drilling data and soil dynamical test of the engineering site, the seismic design parameters with different exceeding probabilities are determined according to the rules in US and Chinese related codes.

本文依据油田及邻区的地震构造、地震活动特征的研究结果，以及场地的钻探资料、土动力参数测试结果，按美国和我国技术规范的要求，确定不同抗震标准下的设计地震动参数。

Sethian, is one of the most important and revolutionary achievements of our time. Applications and extensions of this method range from capturing multiphase fluid dynamical flows to special effects in Hollywood films to visualisation, image processing, control, epitaxial growth, computer vision and many others. Professor Osher has served on the editorial boards of a number of high-impact international journals, including the Journal of Computational Physics .

Sethian 教授共同提出，用於获取运动边线的水准集合方法，是当今世上最重要和革命性的成就之一，它的应用及延伸从获取多相动态流，到荷李活电影所需要的特殊图像视觉效果处理、控制、外延生长、电脑视觉以及其他方面等。

In this paper, we establish some generalized mathematical model of symbolic dynamical systems, which are special cases of discrete spatiotemporal systems.

本文给出了符号动力系统的一般数学模型，它是离散时空系统的一种特殊情形。

These randomness interact with dynamical systems in different ways will produce a lot of complex spatiotemporal order.

这些随机因素与动力学体系的相互作用，会导致形成一系列的复杂的时空动力学&有序&。

Through simulation of the real process of thomcolumbar burst fracture and use of modem dynamics techniques, the present study was (1) to investigate the kinetic relationship between structural damage and impact energy absorption and dynamics mechanism of thoracolumbar burst fracture by quantitative analysis of various injured segments;(2) to explore the instability mechanism of L1 vertebral burst fracture and its injury threshold by three-dimensional analysis of the injured segment with stereophotogrammetry in combination of transient physical parameters, anatomy and image;(3) to explore the corresponding relationships between impact energy, geometry parameters and biomechanics by geometry and biomechanical analysis of thoracolumbar burst fracture, which may provide an objective standard for evaluation of spinal injury severity and experimental evidence for adoption of biomechanical treatment in clinic;(4) to evaluate the fixation effect of different instruments and the effect of intervertebral bone graft on segment fixation by analysis of the threedimensional stability of different internal fixation instruments and their decompression of the spinal canal, which may provide experimental evidence for therapeutical selection for thoracolumbar burst fracture in future; and finally to investigate the effect of various instrument fixation on dynamical characteristics by comparison and quantitative analysis of frequency and amplitude responses, which may provide certain theories and experimental evidence for application of vibration test to judge the stability of the spine.

本研究从胸腰段脊柱爆裂骨折发生的实际过程出发，以现代动力学检测及计算机多通道高性能数据采集分析系统等高新技术为基础，实时量化分析损伤节段的工程参数，揭示了结构破坏与能量吸收的变化规律，探讨了胸腰段脊柱爆裂骨折的瞬态损伤机制；利用三维立体摄像技术，对不同损伤程度的节段进行三维运动分析，结合瞬态物理参数、影像学和病理解剖，明确了〓椎体爆裂骨折的失稳机制及损伤阈值；通过对胸腰椎爆裂骨折的几何学变化及生物力学分析，明确了撞击能量与几何参数、几何参数与生物力学的相应关系，为评判脊柱损伤程度提供了客观标准，为治疗中采取适宜的生物力学方法提供了实验依据；通过对比分析不同内固定器械的三维稳定性和对椎管的减压作用，评价不同器械的复位固定作用，同时比较椎体间植骨对节段固定作用的影响，为今后临床胸腰段脊柱爆裂骨折的治疗选择提供依据；利用振动测试与分析技术，比较及量化分析了不同致伤状况的频幅响应特征，比较分析了各种器械固定对动力学特性的影响，为今后临床建立基于振动测试与分析技术判断脊柱稳定性的诊断方法，提供了一定的理论和实验依据。

The method of prediction on stochastical simulating 3D parameter field of rock mechanics is brought forward in this paper. Namely, rock mechanics parameters- curve obtained by known and limited conventional log materials is took as inputs of hard data;and seismic attribute data body, hydrating of mud shale and rock environmental parameters data is took as constraint of soft data. By simulating stochastically through optimizing algorithm of Sequential Gauss Simulation,dynamical data field of rock mechanics parameter of three-dimensional space are gotten, then log response of rock mechanics parameters in position of any point in space is predicted.

提出三维岩石力学参数场随机模拟预测的方法，即以已知有限的常规测井资料计算出来的岩石力学参数曲线作为硬数据输入，以已知地震属性数据体及泥页岩水化和岩石环境参数数据作为软数据约束，选择序贯高斯模拟方法，随机模拟得到动态规律变化的岩石力学参数的三维空间数据场，然后由岩石力学参数的三维空间数据场预测空间任一位置的岩石力学参数在井上的测井响应，并把该反映动态规律变化的测井响应按照油田勘探开发的要求输出成特定格式，供生产和工程上使用。

This paper is the fourth section of the serial articles, it's primary contents included: based on the basic theory of the continuous medium mechanics, we have given rotational dynamical equations of the solid inner core of the Earth, taken into account influence of the self\|gravitational potential, of the fluid pressure acting on the instantaneous surface of the SIC, and of the degree 2 tesseral component of the tidal generating potential on the rotation of SIC, and has presented their practical expression, in order of magnitude of O.

中国科学院国家天文台/云南天文台，昆明 650011；2。徐州师范大学物理学系，徐州 221116；3。中国科学院测量与地球物理研究所，武汉 430077摘要：本文是序列文章的第四篇，其内容包括：基于连续介质力学的基本理论，给出了固体外核自转的动力学方程，考虑了地球的自引力、液核对内核边界的压力和二阶外部引潮力位对SIC自转的影响，并在O的量级上给出了其实用的表达式。

ffHCHs are characterized by lesion location, size, dynamical enhancement pattern and APS on triphasic contrastenhanced CT findings, which could benefit the diagnosis of the disease.

ffHCH三期增强CT表现在病灶位置、大小、增强方式和伴发APS等方面有一定特征，有助于该病的诊断。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。