查询词典 collision matrix

At first, the paper quote a kind of special matrix ---sign symmetric matrix , anti sign symmetric matrix , weakly sign symmetric matrix and introduced some important results in spectral property about them from some bibliographies. And then, the paper extended the formerly results and gave more general conclusions about spectral property of sign symmetric matrix.

本文首先引入了一类特殊矩阵的概念——符号对称矩阵，反符号对称矩阵以及弱符号对称矩阵，在相关文献中对这类矩阵谱特征的已经有了一些结论，本文在前人研究的基础上将相关结论做了进一步的推广，得出了有关这类符号对称矩阵谱特征的更一般性的结论。

Our results improve the former results. For periodic Jacobi matrix, some new spectral properties of periodic Jacobi matrix are given by studying the relationship of the eigenvalues of periodic Jacobi matrix and its n—1 principal submatrix. Applying these spectral properties, we present a necessary and sufficient condition for the solvability of an inverse problem of periodic Jacobi matrices and discuss the number and the relationship of its solutions. Furthermore, we propose a new algorithm to construct its solution and compare it with the former algorithms. As this inverse problem of periodic Jacobi matrix usually has multiple solutions as many other eigenvalue inverse problems, we study the uniqueness of this problem. And a necessary and sufficient condition is given to ensure its uniqueness, under which an algorithm is presented and the stability analysis is also given. Finally, we put forward a new inverse problem for periodic Jacobi matrix which has not been solved.

对周期Jacobi矩阵特征值反问题，通过研究周期Jacobi矩阵与其n-1阶主子阵特征值的关系，给出了周期Jacobi矩阵的一些新的谱性质；利用这些谱性质，研究了一类周期Jacobi矩阵特征值反问题，用新的方法推导出了该类特征值反问题有解的充分必要条件，并讨论了解的个数以及解与解之间的关系；此外，提出了一种新的构造周期Jacobi矩阵反问题解的数值算法，并与前人的算法做了一定比较；由于周期Jacobi矩阵特征值反问题和其他很多特征值反问题一样往往存在多个解，本论文给出了周期Jacobi矩阵反问题解唯一的充要条件，并发现周期Jacobi矩阵特征值反问题的解唯一当且仅当构造的矩阵满足一定的条件；在解唯一的情况下，给出了构造唯一解的数值算法，并做了相应的稳定性分析；最后，提出了一类新的有待于解决的周期Jacobi矩阵特征值反问题。

In many practice problems such as to know the resonnance frequency of a structure and to know the critical value for the stability of a dynamical system,often need to compute the eigenvalues of a symmetric matrix. The chief method to compute the eigenvalues of a symmetric matrix is first to transformate the matrix to a symmetric tridiagonal matrix similarly and orthogonally, then to use the QR method with shift to the symmetric tridiagonal matrix.

很多实际问题，如求结构振动的固有频率，动力系统稳定性的临界值等常常归结为计算对称矩阵的特征值，而首选的计算方法是先把该矩阵正交相似变换成一个对称三对角矩阵，再对这个对称三对角矩阵用带位移的QR方法。1968年J.H。

Our company has developed the car intelligence anti-collision device, which can make up the current defect in car safety equipment, this product can automatically open blinker flash as warning signal by acceleration at collision time without any hand operation, and send out anti-collision signal, it can be received timely by the coming cars within 150 meters, which makes the driver take measures to avoid traffic accident in advance, thus preventing the rear-end accident, it is the first choice for car intelligence safety upgrade ,and can change the history of no driving on expressway in foggy days.

我公司研制的汽车智能防撞器，能弥补当前汽车安全配置的不足，它能在紧急制动或碰撞时，无须任何手动操作，靠加速度撞击力瞬间自动打开警示灯闪烁示警，并向外发射防撞信号，驶近车辆在150米内能及时接收到危险信号提示，使驾驶员提前采取紧急避让措施，从而有效的防止追尾事故的发生，它是当今汽车智能安全升级的首选，并可改变雾天高速公路不能行车的历史。

Elastic collision and inelastic collision are considered in oxygen molecule, nitrogen molecule by electron impart. The mail simulation results were as follow:(1)The variations of drift velocity and the average energy of electron with the E/N in O2 and N2 are obtained. The number of electrons for excitation, ionization, dissociation and dissociative ionization collision with the E/N and the energy of electron are analyzed emphatically.

考虑了各种弹性和非弹性碰撞过程，在纯氧气、纯氮气中，给出了不同简化场E／N条件下的电子漂移速度和平均电子能量的变化；着重分析了激发、电离、分解及分解电离碰撞的粒子数随E／N、电子能量的变化，同时计算了激发发射光谱的波长。

The physical rule of the collision of a particle and a bar is discussed,the energy relation in completely inelastic collision is cleared,and it is turned out that the two bodies not necessarilly move together after completely inelastic collision .

讨论了小球与自由杆碰撞过程中所遵从的物理规律，明确了完全非弹性碰撞过程的能量特征，指出完全非弹性碰撞后两物体不一定粘在一起共同运动的事实。

Based on a whole car collision experiment and explicit finite element analysis method, the collision simulation experiment of a cab is completed, the precursive research for the whole car collision simulation experiment is completed..

基于整车模拟碰撞试验和显式有限元分析方法，完成了驾驶室碰撞模拟试验，为整车模拟碰撞试验研究进行了先导性的研究。

Under Institute Collision Liability Clause the insurers agree to indemnify the Assured for 3/4ths of collision liability, while under PICC Hull Insurance Clauses the insurer have to pay 4/4ths collision liability as well as allision liability the Assured becoming legally liable to third party.

英国协会条款仅承保3/4的船舶碰撞责任，而我国人保船舶保险条款则承保4/4的碰撞、触碰责任，沿海内河船舶保险条款则承保3/4的碰撞、触碰责任。三者对间接损失的保险责任也有所不同。

Collision – Unknown to both me and Brother Laz, but this boolean is related to the previous one, many missiles that have no "physical collision" but still perform a collision event will have this set to 1.

Collision –我和Brother Laz都不清楚这列是什么用。，但这布尔型关系到前一列，很多投射物没有&物理碰撞&但时依然旅行碰撞事件，在这里设置为1。

In this process, we let the detection of an impending collision trigger a redecision by the agent so as to solve the collision.It is shown in the simulation experiment that the algorithm of both the collision-free navigation and the formation initialization is feasible and effective.

针对本文研究的具体问题，分析了多机器人仿真系统的结构，设计仿真程序的具体模块，编写了一个适用的仿真软件，并进行了仿真运行试验，试哈尔滨工程大学硕士学位论文验结果表明了本文所提出方法的有效性。

Mr. Putin said there were signs of genocide against the Ossetian people.

普京说，有迹象表明对南奥塞梯人进行了种族清洗。

What I'm trying to say, Tristan is...

特瑞斯坦。我想说的是。