电信固定资产数据同步设计与实现

针对同步思想给出一套具体设计方案。目前固定资产管理模式的发展逐渐从本地网管理过渡到省集中的管理模式。这样就涉及到各本地网数据库、省集中数据库和接口库三者的数据同步问题。为了屏蔽底层数据的交互问题,将数据同步问题分为两个层次:业务应用层和数据传输层,从而将业务状态与内部数据的同步分离。     

Synchronization in lattices of coupled non-autonomous Chen system via Lyapunov function

This paper considers the synchronization of solutions for lattices of the coupled non-autonomous Chen system. By using the Lyapunov function, we show that when the second coupled operator is negative definite self-adjoint and its coefficient is suitable large, the Chen coupled lattice system is bounded dissipative (In particular, the solutions for lattices of the coupled autonomous Chen system converge to zero as t → ∞). The synchronization between any two solutions of the coupled Chen system can be slaved only by coefficients in the x- or y-component for the suitably large second coupled coefficient. Finally, some numerical simulations are given. Project supported by the National Natural Science Foundation of China (Grant No.10771139)     

Efficient timing and frequency offset estimation scheme for OFDM systems

A new training symbol weighted by pseudo-noise(PN) sequence is designed and an efficient timing and fre quency offset estimation scheme for orthogonal frequency division multiplcxing(OFDM)systems is proposed.The timing synchronization is accomplished by using the piecewise symmetric conjugate of the primitive training symbol and the good autocorrelation of PN weighted factor.The frequency synchronization is finished by utilizing the training symbol whose PN weighted factor is removed after the timing synchronization.Compared with conventional schemes,the proposed scheme can achieve a smaller mean square error and provide a wider frequency acquisition range.     

OAI资源库更新频率的定量分析和同步模型的建立

在分析现有开放文档先导(OAI)资源库更新频率的基础上,通过定义一些变量,对OAI资源库更新频率进行定量和定性分析,提出4种评价更新频率的方法,然后根据更新频率的定性和定量分析得出针对不同更新频率OAI资源库应该使用哪种收割模型,并且给出两种同步模型,对其算法进行描述。最后,解决目前OAI 资源库存在的几个问题:①服务可用性;②OAI 资源库的同步;③OAI资源库负载;④流控制。     

一类参数不确定混沌系统的分数阶自适应同步

利用分数阶微积分理论,对具有不确定参数的不同混沌系统,设计出了一种分数阶同步器,所设计的系统参数调节律具有分数阶的特性.利用Lorenz系统和一类新的混沌系统的同步仿真验证了此方法的有效性.     

Adaptive synchronization for delayed neural networks with stochastic perturbation

In this paper, an adaptive feedback controller is designed to achieve complete synchronization of unidirectionally coupled delayed neural networks with stochastic perturbation. LaSalle-type invariance principle for stochastic differential delay equations is employed to investigate the globally almost surely asymptotical stability of the error dynamical system. An example and numerical simulation are given to demonstrate the effectiveness of the theory results.     

基于反馈线性化方法的混沌同步

采用反馈线性化方法实现混沌同步,以Lorenz系统这个典型混沌系统为例,从理论和数值上研究了这种混沌同步方法。模拟结果表明,Lorenz系统在新的动力学的基础上达到完全同步。     

海南小说：与当代文学同步

海南的地理位置虽然比较边缘,但它的文学并不边缘。海南的小说创作与中国当代文学是同步前进的。这些小说或意蕴深刻,或题材独特,或风格别致。外地读者除了想窥探海南文学的思想与艺术高度,也想领略海南文学的地域文化魅力,这也是海南文学获得自己性格的一个关键。从这个意义上说,海南文学的地域文化色彩今后还可以更浓重一些。     

基于System View的扩频通信中同步的仿真

PN码序列的同步是扩频系统所持有的,也是扩频技术中的难点。本文根据扩频通信中同步的基本原理,利用滑动相关法实现PN序列码的同步,采用Svstem View软件对其进行仿真验证。     

混沌动力系统的脉冲同步

研究了混沌系统的脉冲同步问题.利用脉冲控制理论和线性矩阵不等式的方法,得到了关于混沌系统脉冲同步的一个充分条件.