查询词典 quasi analytic function

Sufficient conditions for existence of positive periodic solutions of these systems are established and we investigate a stochastic Lotka-Volterra ecosystem, by use of the mixed quasi-monotone theory and Liapunov function method, some new results are obtained.

最后，我们研究了n种群随机Lotka-Volterra生态模型，利用混合单调流理论和It〓型随机微分方程知识，得到了其解过程的均方渐近稳定性和强生态稳定性的结果。

For this new definition of quasi-sliding mode its stability problem is proved meanwhile the linear switching function is determined.

对新定义的准滑动模态，解决了其稳定性并给出了切换函数。

The quasi-phsical method makes the original problem an optimization problem in mathematics. There is often the possibility of going to a local minimum of object function when solving the optimization problem mathematically.

所谓拟物就是主动地向自然界学习解决问题的方法，即寻找与原始数学问题等价的物理世界并观察这个世界中物质运动的生动形象，然后从中得出启发并逐步形式化为算法以求解问题。

To develop the missile quasi-linear model, a state space model is established for missile dynamics, and function substitution method is used to describe the nonlinear dynamics of missile as linear combinations of functions of given time-varying parameters. With the minimizing variation range of model parameters over the whole design envelope as the optimum aim, linear programming optimum arithmetic is used to determine the model parameters at selected grid points.

为了建立导弹准线性化模型，将导弹动力学描述为状态空间形式；采用函数替换方法将导弹的非线性动力学描述为关于特定时变参数的函数的线性组合形式；以整个设计区间内模型参数变化范围最小为优化目标，采用线性规划优化算法确定了所选网格点上的模型参数。

In this paper, a Green quasi-function is firstly set up by using the basic solution of Poisson's equation.

利用Poisson方程的基本解构造一个准格林函数，这个函数满足Poisson方程的齐次边界条件。

The expressions have been obtained for the quasi-steady-state probability distribution function.

得到了系统的准稳态概率分布函数。

The current best algorithm for image matching, image fusion algorithm used in practice, with high-performance digital signal processing to combine the development of real-time or quasi real-time image fusion system function and even to China s military technology areas of civilian technology of great significance.

将目前的优秀图像匹配算法、图像融合算法用于实践，与高性能的数字信号处理相结合，开发能实时或准实时图像融合功能的系统对我国军事技术乃至民用技术领域有着重要意义。

The AG-W1 is VHS but its S-VHS Quasi Playback function also lets you play back SVHS videotapes in both NTSC and PAL systems.

银的W1是的VHS ，但其的S -的VHS准重放功能也可让您发挥回svhs录影带在这两个NTSC和PAL系统。

A relationship of the roughness parameters of diffusing surface strongly depend on the space correlation function of quasi—ideal imagine system has been confirmed and a new method for evaluating roughness has been proposed. In Chapter 4, the statistical properties of superposed dynamic speckle from a rotating diffuser have been investigated under double Gaussian—beam illumination.

同时，本章还证明了准理想外差成像系统动态散斑的空间相关与表面粗糙度参数之间有很强的依赖关系，在此基础上提出了一种新的工程表面粗糙的测量方法和计算机仿真的结果。

The functions, latitude being parameter, are the quasi linear combination of the Legender functions and their derivatives, which can be evaluated by the recursive formulae of the Legender function and its derivatives.

它们关于纬度的函数是 Legender 函数及其导数的拟线性组合，可由目前熟知有关 Legender 函数及其导数的递推公式给予赋值。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。