一类二阶脉冲时滞微分方程的振动性

利用一类二阶脉冲滞后型微分方程的非振动解与其导数的符号关系，得到了振动的判别准则，并举例说明了准则的有效性。     

二维 Lotka-Volterra 扩散系统一致持久的无害时滞

研究了二维Ｌｏｔｋａ－Ｖｏｌｔｅｒｒａ扩散系统中时滞对持久性的影响，证明时滞对该系统的一致持久性无害．所用技巧是时滞反应扩散系统的单调方法．     

ATM网络中恒定比特率和可变比特率语音通信

分析了ＡＴＭ（异步转移模式）网络中恒定比特率（ＣＢＲ）和可变比特率（ＶＢＲ）语音通信方式，讨论了ＩＴＵＴ１９９７年新颁布的ＡＴＭ可变比特率业务适配标准ＡＡＬ２，给出了信元装配实例。针对ＶＢＲ业务相对ＣＢＲ业务有较大不同的网络传输时延特性，着重分析了语音信号作为ＶＢＲ业务采用ＡＡＬ２适配标准时，通过ＡＴＭ网络传输时的装配时延问题。     

THE BASIC THEORY OF SOLUTIONS OF FUNCTIONAL DIFFERENTIAL EQUATIONS WITH BOUNDED DELAY IN THE SPACE OF INTEGRABLE FUNCTIONS

在可积函数空间中讨论有界滞量泛函微分方程，建立其解的基本理论，包括解的存在性，唯一性及延展性。     

主/支路条件下交叉口通行能力综合评价

交叉口通行能力研究必须与交通运行质量的评价方法结合起来，通行能力的评价方法不仅应该反映出道路使用者的主观满意程度，还应对道路的利用程度作出额观评价，本文针对我国公路上无信号交叉口和环形交叉口的道路和交通特性，建立了适用于主／支路条件下交叉口通行能力的综合评价方法。     

试论企业盈余管理

文章论述了企业盈余管理会计准则制定的滞后性，导致会计信息失真，对这些失真的会计信息要加大力度进行防范。     

New criteria on delayed state feedback stabilization for stochastic systems with time-varying delay

The problems of robust exponential stability in mean square and delayed state feedback stabilization for uncertain stochastic systems with time-varying delay are studied.By using Jensen’s integral inequality and combining with the free weighting matrix approach,new delay-dependent stability conditions and delayed state feedback stabilization criteria are obtained in terms of linear matrix inequalities.Meanwhile,the proposed delayed state feedback stabilization criteria are more convenient in application than the existing ones since fewer tuning parameters are involved.Numerical examples are given to illustrate the effectiveness of the proposed methods.     

5G-TSN系统下的高精度时间同步

第五代移动通信系统(the fifth generation communication system, 5G)与时间敏感网络(time sensitive networking, TSN)集成的5G-TSN系统需要实现高精度的时间同步。为此,提出一种多波束联合的定时同步算法提高同步信号检测成功率,实现高精度5G-TSN时间同步。首先,根据多个波束间的时域关系计算波束间同步信号块的互相关的组合,求出期望作为门限值;然后,利用超过门限值的若干波束进行互相关叠加峰值计算最大峰值对应的时域索引,并完成主同步信号定时同步;最后,利用时频域结合地方式对传播时延进行估计以减少同步误差。仿真结果表明,采用基于多波束联合的定时同步算法,相比传统算法,相关峰值更加显著,能有效地提高定时同步成功率。     

具有细胞内时滞的耦合传染病模型

考虑一类具有Logistic增长的时滞耦合模型. 首先, 利用特征方程和Lyapunov-LaSalle不变性原理, 证明当R₀≤1时, 无感染平衡点的全局渐近稳定性; 当R₀>1时, 病毒感染平衡点Hopf分岔的存在性. 其次, 得到了Logistic增长与时滞会影响系统稳定性的结果. 最后通过数值模拟验证理论结果的正确性.     

A routing algorithm for industrial wireless network based on ISA100.11a

ISA100.11 a industrial wireless network standard is based on a deterministic scheduling mechanism.For the timeslot delay caused by deterministic scheduling,a routing algorithm is presented for industrial environments.According to timeslot,superframe,links,channel and data retransmission of deterministic scheduling mechanisms that affect the design of the routing algorithm,the algorithm selects the link quality,timeslot delay and retransmission delay as the routing criteria and finds the optimum communication path by k shortest paths algorithm.Theoretical analysis and experimental verification show that the optimal paths selected by the algorithm not only have high link quality and low retransmission delay,but also meet the requirements of the deterministic scheduling.The algorithm can effectively solve the problem of packet loss and transmission delay during data transmission,and provide a valuable solution for efficient data transmission based on determinacy.