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1)  time periodic solution
时间周期解
1.
The existence of a positive time periodic solution for a time periodic boundary value problem is proven, and the asymptotic behavior of solutions to an initial boundary value problem are given respectively.
证明了具周期系数的边值问题正时间周期解的存在性以及对应初边值问题解的渐近性 。
2.
The time periodic solution problem of damped generalized coupled nonlinear wave equations with periodic boundary condition was studied.
 研究了一类广义耦合的非线性波动方程组关于时间周期解的问题· 首先利用Galerkin方法构造近似时间周期解序列,然后利用先验估计和Laray_Schauder不动点原理,证明近似时间周期解序列的收敛性,从而得到该问题时间周期解的存在性·
3.
The time periodic solution problem of a coupled KdV and nonlinear Schrdinger equations was studied.
本文研究了一类KdV非线性Schrdinger组合微分方程组时间周期解的问题,首先利用Galerkin方法构造近似时间周期解序列,然后利用先验估计和Leray-Schauder不动点原理,证明近似时间周期解序列的收敛性,从而得到该问题时间周期解的存在性。
2)  time-periodic solution
时间周期解
1.
The existence of a time-periodic solution is proved by the Galerkin method,Leray-Schauder fixed point theorem andpriori estimates.
利用伽辽金方法、Leray-Schauder不动点原理和先验估计,证明了在带周期外力扰动和周期边界条件的影响下,非线性发展Ginzburg-Landau方程ut=(l+iα)Δu-(k+iβ)u2u+γ+f的时间周期解,其中f(t,x)是一个关于时间变量t的以ω为周期的函数。
2.
By means of the method of upper and lower solutions and its associated monotone iteration,a finite difference method with an accuracy of order four in space and an accuracy of order two in time is proposed for time-periodic solutions of a nonlinear parabolic equation with time delay.
利用上下解方法及相应的单调迭代方法,建立一个用于求解一类时滞非线性抛物型方程时间周期解的有限差分格式,在空间和时间方向上该格式分别具有四阶和二阶精度,并证明了周期解的存在惟一性,给出了一个求解算法,同时讨论了数值解的收敛性。
3.
The existence,stability,and attractivity of time-periodic solutions for a class of coupled parabolic difference equations in a bounded domain are concerned.
研究了一类周期差分抛物系统时间周期解的存在性、稳定性和吸引性。
3)  time-periodic generalized solution
时间周期广义解
4)  periodic time
周期时间
1.
This paper firstly consider the Bertino’s work which introduce periodic time and temporal dependencies in DAC model, and then presents a permission delegation model PDACDM to support temporary constraints, temporal dependencies constraints and propagation constraints.
参考Bertino等人的工作,基于他们提出的加入了周期时间和时序依赖的自主访问控制模型,给出了一个支持临时性限制、时序依赖性限制和传播性限制的权限委托模型PDACDM。
2.
A weighted role for activating task and periodic time authorization is an unsolved major problem for the access control of a workflow management system (WfMS).
带权角色激活任务和周期时间授权是工作流系统访问控制研究尚未解决的核心问题。
3.
The traditional RBAC model cannot express time secure access control constraint,so proposed a new RBAC model with time character,in which defined a new concept of authorization based on periodic time.
针对传统的RBAC模型不能表达时间特性安全访问控制约束的缺点,提出了一个带有周期时间特性的安全访问控制模型。
5)  cycle time
周期时间
1.
The result is that the cycle time goes up andthe number of the work-in-process/WIP rockets up.
在晶圆制造厂中,有时为了提高设备利用率而盲目地增加投料/产出速率,造成生产周期时间增长,在制品增多。
2.
For nonautonomous and nonlinear DEDS with a state feedback, by introducing the maximum mergable subset of a strongly connected system, we define the partial merging assignment of cycle times and the stabilization, give a necessary and sufficient condition for the assignment and a sufficient condition for the stabilization.
对于具有状态反馈的非自治非线性DEDS,通过引入强连通系的最大能并子集,定义了周期时间部分合并配置和能稳性,给出了周期时间部分合并配置的一个充要条件以及能稳性的一个充分条件,前者推广了已有结果。
3.
Area problems of cycle time independent assignment of min-max systems using a state feedback is considered, and constitution ways of confirming the most important sub domains of systems assigned region is obtained, and an example is given.
考虑极小极大系统的周期时间能用状态反馈独立配置的区域问题 ,得到了确定系统配置域最重要子域的构造方法 ,并给出了一个例子 。
6)  period [英]['pɪəriəd]  [美]['pɪrɪəd]
周期,时间
补充资料:离散时间周期序列的离散傅里叶级数表示
       (1)
  式中χ((n))N为一离散时间周期序列,其周期为N点,即
  式中r为任意整数。X((k))N为频域周期序列,其周期亦为N点,即X(k)=X(k+lN),式中l为任意整数。
  
  从式(1)可导出已知X((k))N求χ((n))N的关系
   (2)
  式(1)和式(2)称为离散傅里叶级数对。
  
  当离散时间周期序列整体向左移位m时,移位后的序列为χ((n+m))N,如果χ((n))N的离散傅里叶级数(DFS)表示为,则χ((n+m))N的DFS表示为
  

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