1) exponential decay estimate
指数衰减估计
1.
New sufficient conditions for the existence of an unique equilibrium and the exponential stability of the neural networks are presented,and the exponential decay estimate of the solution is proposed.
避免构造Lyapunov函数的困难,运用广义Dahlquist数方法研究了Cohen- Grossberg神经网络模型的指数稳定性,不但得到了Cohen-Grossberg神经网络平衡点存在惟一性和指数稳定性的全新充分条件,而且给出了神经网络的指数衰减估计。
2) decay estimate
衰减估计
1.
Existence and decay estimate of global solution for a nonlinear hyperbolic system with strong damping;
一类强阻尼非线性双曲型方程组解的存在性与整体衰减估计
2.
In this paper,we study the Camassa-Holm equation in whole R3,the decay estimate of H1 solutions is established by making use of Fourier transform,Plancherel theorem and dividing integral area.
研究了无界区域上的Camassa-Holm方程,利用傅立叶变换,普朗歇尔定理和区间拆分的技巧得到了Camassa-Holm方程柯西问题的解的H1衰减估计。
3.
The relationship between the time-dependent solution and steady-state solution is considered,a decay estimate between the time-dependent solution and steady-state solution is given by series of estimate on the solution under some conditions.
考虑此半导体方程瞬态解和稳态解之间的关系,通过对解的一系列估计,给出了在一定条件下瞬态解与稳态解的一个衰减估计。
3) decay estimates
衰减估计
1.
Energy-decay estimates for the solution of biharmonic equation;
双调和方程解的能量衰减估计
4) exponential decay
指数衰减
1.
First the image was transformed into diagonal one,reserving the correlations between variations of rows and those of columns of the image,then an image with definite size was obtained by using wavelet transform,and finally the susceptivity of algorithm to the change of illumination was reduced by using exponential decay strategy.
先将图像对角化表示,保留图像对角方向结构信息;再通过小波变换得到一定尺度的图像;最后利用图像灰度的指数衰减策略,降低算法对光照等变化的敏感性。
2.
Moreover,by study the asymptotic behavior of solutions for the ablve problem,that the energy is exponential decay in time was.
并且通过研究解的渐近行为,证明了能量随时间是指数衰减的。
3.
In this paper, we study the existence, uniqueness and exponential decay of the global solution for the systemwith initial conditionsHere |·|2 is the norm in L~2(0,L) , u is the transverse displacement of the string, d is the temperature and M,N and R are real nonlinear functions.
2)在不同的边界条件下强解的存在,唯一和指数衰减性。
5) attenuation index
衰减指数
1.
The attenuation rate η of stress peak is discussed and the attenuation indexes α within different stress range are given.
利用轻气炮平板碰撞试验 ,对新加坡BukitTimah花岗岩试样进行冲击压缩试验研究 ,根据实验数据研究了应力波的传播 ,用四次多项式表示了应力波峰值随传播距离的衰减规律 ,讨论了应力波峰值的衰减率 η和不同应力范围的衰减指
6) exponentially decaying
指数衰减
1.
It is characterized a Riesz basis associated with an exponentially decaying mask in term of refinement function and two-direction wavelets.
在指数衰减情况下,研究双向加细方程在L2稳定解的存在性,得到双向多辨分析紧支撑小波的Riesz基完整刻划。
2.
We use the implicit function theorem to prove that the zeros are continuable, and that the continuations are exponentially decaying.
我们给出定义在R×l~∞空间上的映射的零解延拓定理:应用隐函数定理证明零解可延拓,再进一步证明延拓后的零解具有指数衰减性。
补充资料:迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中,}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100,如某一地区的值越大,反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂,则: }艺材。一芝Mj、}EIM汀艺。+乏M,(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二,么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中,M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I,j为迁移偏好指数。通过计算迁移偏好指数,可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如,专业技术人员的人数所占比重,各种文化程度人数所占比重等,以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中,M为迁移人数;M,为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。
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