查询词典 dynamics

The algorithm GS to solve the problem of inverse dynamics based on the optimal theory is proposed, by using the numerical methods of Gill and shooting target, the optimal joint driven torques are obtained With the smooth joint trajectory motion, a fast and stable inverse dynamics method is proposed, it provides a new effective way to control the flexible manipulator The trajectory planning in the joint space and Cartesian coordinates is especially discussed In terms of kinematics of space flexible link manipulators, a sequential integration method for inverse dynamic analysis of flexible manipulators is developed The concrete results of simulations tested and verified the validity of proposed methods, and some valuable conclusions are achieved.

提出了求解基于最优理论的柔性臂逆动力学问题的GS法(Gill—Shooting method)，得到了柔性臂关节的最优驱动力矩；提出了基于光滑关节运动轨迹的柔性臂逆动力学的快速稳定方法，为柔性臂控制提供了一条新的途径；探讨了关节空间和直角坐标空间柔性臂的轨迹规划问题；研究并完善了结合柔性臂运动学的顺序积分的逆动力学方法。通过具体实例的仿真研究，验证了所提出的柔性臂逆动力学方法的有效性，得出了一些很有价值的结论。

Study on the background of mineralization system dynamics shows that formation and evolution of the celestite mineralization system are controlled by uplifting of the Qinghai-Tibet plateau and the collision of Gondwanaland and the Eurasia continent, structure stress and thermal-dynamics are the key factors of formation and evolution of the celestite mineralization system.

对该区成矿系统动力学背景研究表明，印度板块与欧亚板块碰撞及青藏高原的隆升控制着锶矿成矿系统的形成和演化；构造应力与热动力是盆地锶矿成矿系统形成演化的关键因素，而构造应力是盆地内一系列热水活动的主要动力来源。

Thermal hydraulics: feat systems, noesis agitate sending systems, anti-lock braking systems, cerebration gear, render shot systems, astir support systems, lubrication systems* Gas dynamics: pneumatics, propulsion, sterilization, expose and clean cycles, high-pressure gas, pedal transmission, adsorption, pedal form reactions, HVAC, ECS, multi-species aerosolized systems* Multiphase fluids: refrigeration, air-conditioning, status control, cryogenic piping networks, steam/water systems, or render systems with exotic, vaporific fluids.* Systems curb element and code assessment data acquisition distribution rates, anachronic communication, similarity and digital electronic filters, curb wrap enforcement rates, meshwork (CAN charabanc communication, etc.* Fuel cells: stationary or mobile.* Electrical systems: AC/DC machines, noesis electronics, batteries, etc. Flight dynamics, and curb systems of every kinds including digital filters

MSC Easy5的独到之处在于：其一，强大的控制系统仿真分析能力，可以建立各种复杂的控制系统模型，包含稳态分析、线性系统分析、频域响应、根轨迹分析等完整的控制系统分析类型；其二，多学科专业应用库，借助专业应用库中的预定义模型元件，向用户提供独一无二的建立系统级模型和研究多学科系统耦合问题的能力；其三，卓越的代码生成和求解器，可以由图形化系统模型自动生成相应的FORTRAN或C源代码，这些代码可以通过编译生成可执行程序，并可被用户调用；其四，高效的高级建模和二次开发功能，方便用户创建用户化模型元件，并可调用外部FORTRAN或C子程序；其五，与其它CAE软件良好的集成能力，可以将不同CAE软件所建立的模型集成到MSC Easy5中建立完整的虚拟样机，是真正的协同仿真平台。

1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

通过上述几个方面的研究，主要得出以下15条结论：(1)生态位构建可使空间结构种群，甚至是在没有杂合子优势的条件下，形成多种可能的稳定基因型分布模式；(2)随着环境的破坏与恶化，种群的生态位构建作用加速其较早形成稳定多态以阻碍环境对种群的不利影响，解释了有机体在不利环境下的一种生活史对策；(3)生态位构建作用通过基因型—环境反馈机制及有限的基因交流导致基因型多态的稳定共存；(4)有机体的生态位构建作用是一种积极的动力改变环境进而改变其自然选择的方向；(5)生态位构建的时滞作用对集合种群动态和空间分布产生深刻影响；(6)集合种群大小在时滞的崭新效应和等权重效应下达到一固定值，而在首位效应下达到统计稳定，表明首位效应的影响最显著；(7)首位效应下生态位构建相对权重的增量和时滞的长度是影响系统不稳定性动态的关键因素；(8)适中的生态位构建强度有利于集合种群的续存；(9)生态位宽度变窄会减少集合种群的数量从而增加其灭绝风险；(10)时滞和生态位构建的双重作用使系统产生周期振荡，并在异质性环境中产生稳定的螺旋波，破碎的螺旋波和环形波三种分布模式；(11)集合种群与资源含量的空间分布因为相滞而互补；(12)具有生态位构建的集合种群续存不仅取决于侵占率与灭绝率之间的平衡，而且依赖于生态位构建能力同其生境的自然消耗速率之间的妥协；(13)当生境中适合侵占的斑块比例小于其侵占率与灭绝率之比时，生态位构建作用促使集合种群在一定条件下续存：(14)生境斑块的状态从不适合到适合转变过程中存在生态位构建强度和系统初始条件这两个阈值；(15)集合种群的大小同正生态位构建能力正相关，意味着对环境具有较强正作用的有机体对维持有效生境起积极作用。

In the broad-leaved Korean pine climax forest, the fine root climax production of the community occurs in July and October, but the dominant arboreal species, understory arboreal species and fine roots of grass have a different production dynamics. It is important to sort the fine root species because accurate fine root production sources have a different fine root dynamics.

在原始阔叶红松林中，群落细根的生长高峰发生在7月和10月，但其中主要树种、其他木本和草本的细根有着不同的生长动态，所以在计算细根生产量时应该分类计算，才会得出较为准确的结果。

On the basis of analyzing the reason that produce hydraulic impact, the dynamics of vibration wheel of vibration compactor and dynamics of vibration hydraulic system were analysed, the mathematics model of vibration hydraulic system was set up and its output models for pressure and flow were deduced.

在分析液压冲击产生原因的基础上，进行了振动压路机振动轮的动力学分析和振动液压系统的动态分析，建立了振动液压系统的数学模型，同时推导出系统压力和流量的输出模型。

Atypical problem is that our learners of WBI have no enough dynamics to study whenthey face the key composition of our WBI—online course. How to raise the learningdynamics by effective designing of online course is very important. In view of this, westudied how to improve learning dynamics of WBI learner by effective design of onlinecourse.

一个典型的问题就是，我们的网络学习者在面对我们网络教育的核心成分—网络课程时，积极性并不高，也就是说没有足够的动力去学习，由此看来研究如何通过对网络课程的有效设计来提高学习者的学习动力的问题有着相当重要的意义的。

ABSTRACT The main content of this dissertation is focused on formal Verification of Hybrid Systems with complex continuous dynamics. The research pivot is to solve the difficulties of Discrete model Approximation of Complex Continuous dynamics .

本文所有论述均围绕着解决具有复杂连续动态混合系统的形式验证这个主题而展开，以解决验证中复杂连续动态的离散近似所存在的困难为研究重点。

Recently, the study of the critical state dynamics has achieved great advance based on the development of vortex dynamics.

然而近年来基于涡旋动力学理论的发展，逐步形成了临界态动力学研究课题。

By the binding of two colloidal particles in Brownian Dynamics Simulation binding, colloidal particles, Brownian dynamics simulation, the two particles, diffusion tensor, hydrodynamics, methods, low Reynolds number, aqueous solution, distance, colloidal suspensions, since correlation function, cross correlation function,...

受束缚的两个胶体粒子的布朗动力学模拟束缚，胶体粒子，布朗动力学模拟，两个粒子，扩散张量，流体力学，方法，低雷诺数，水溶液，距离，胶体悬浮系统，自相关函数，互相关函数，。。。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。