谱函数

The design method for the switching functional which leads to stable sliding modes is presented if the system is spectrally controllable.

摘要研究一类状态变量具有时滞的线性系统的变结构控制问题，指出传统的切换函数在时滞系统中应当是一个切换泛函，给出了在系统谱能控条件下具有稳定滑动模态的切换泛函的设计方法。

The parameter of the support vector machine and the length of sliding step in smoothing the power spectrum are determined by experiments.

通过实验确定了支持向量机核函数的参数和功率谱平滑的滑移步长。

We also give a theoretical result for the stream function form of the Navier-Stokes equation in unbounded domains.

我们还建立了流函数形式的Navier一Stokes方程在无穷带状区域中的一类始边值问题的谱格式，证明了该格式的稳定性和收敛性。

It was derived that the modulated reflective spectrum of weak electric field is proportional to the third derivative of the dielectric function with respect to the energy.

分析表明波长调制反射谱的实质，是介电函数对能量的一级微商。

This paper puts forward a long memory stochastic conditional durations model for ultra-high frequency durations series,and provides a kind of spectrum likelihood estimation method.

文章针对股票市场的超高频持续期序列，提出了长记忆随机条件持续期模型，并给出了模型参数的极大谱似然函数估计方法。

By estimates of the spectral gap, Sobolev inequality and the weak convergence theory of stochastic process, we obtain that the annealing process converges in probability to a neighbourhood of the global minimal set of the potential function.

利用谱隙估计和Sobolev不等式方法以及随机过程的弱收敛理论我们得到这种退火过程依概率收敛到势函数的全局最小点附近。

A configuration that transition points are reflection symmetric about the midpoint with phase offset in one period is proposed. The intensity of the zero order becomes the function of the phases and can be eliminated.

采用周期内位相突变点镜向对称，前后半周期位相相差结构设计的反对称型达曼光栅，可使其零级衍射光斑强度仅是位相的函数，因此可消除零级谱点。

Based on the interference theory of light wave and Mie′s scattering, atheory of the quasi-waveguide has been developed for the first time,which,in two aspects,represents the property of the mode spectrum in aquasi-waveguide e.g.the analytic expression of the reflection intensity asa function of the incident angle,and that of the scattered intensity as afunction of the output angle.

基于平面波的光波簇干涉理论和米氏散射，发展了准波导理论，首次给出了从两个不同侧面表征准波导模谱特性的反射光强度与入射角以及散射光强度与输出角的函数关系解析式，并确认其m-线的产生源于米氏散射光及其干涉效应所致的选模作用。

≤0.3. Second, applying a set of absorption-line indices to the Merit Function for Galactic and M31 globular clusters and the circumnuclear region of M32, we obtain their age and metallicity.

其次，将简单单星族的Lick/IDS系统谱指数应用于品质函数，给出了一些银河系和M31的球状星团，M32中心区域的年龄和金属丰度。

On the time shift problems, the significance of the new concept of dyadic time has been interpreted.

在时移问题上，通过相关函数、卷积定理和功率谱定理来理解&并矢时间&这一新概念的意义。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。