定时/计数初值求取公式的修正

本文推导了定时/计数初值求取公式,指出利用求补公式计算定时/计数初值的错误。     

基于向量Liapunov函数的时滞车辆跟随系统稳定性分析

为了提高自动化高速公路车辆纵向跟随控制系统的稳定性,建立了关于车辆跟随误差的具有时间滞后的无限维非线性关联大系统模型,应用向量李雅普诺夫函数对大系统的稳定性进行了分析。以大系统的孤立子系统的稳定性条件为基础,在假定系统满足全局Lipschitz条件的情况下,得到了此类大系统指数稳定的充分性判据。该判据是与时间滞后量无关的显式判据,可方便地应用于车辆纵向跟随控制器的设计。     

起重机结构寿命的模拟估算

根据已有的试验和研究成果，总结推荐了桥门式起重机焊接箱形梁的疲劳参数取值。以等幅载荷疲劳裂纹稳定扩展阶段的计算公式为基础，针对起重机承受随机载荷的特点，运用时间循环法，估算了桥门式起重机焊接箱形梁的疲劳裂纹扩展寿命。     

刺激大鼠皮神经引起的屈肌反射电位及背根电位

本工作以清醒、整体大鼠为对象,记录了刺激皮神经所诱发的屈肌反射电位(FRP)和背根电位(DRP)。分级刺激腓肠神经(皮神经),在hamstring神经干上(一组支配后肢屈肌群的神经)先后诱发出A-FRP和C-FRP,同时在L_5背根上诱发出A-DRP和C-DRP。A-FRP和A-DRP的阈值、潜伏期均无明显差异,且呈有意义的正相关;二者的幅值在一定范围内随刺激强度的增大而增大。C-FRP阈值和潜伏期比C-DRP均较大,但二者的阈值和潜伏期均呈有意义的正相关,且二者的幅值在一定范围内随刺激强度的增大而同步递增。每一串刺激(3个脉冲,间隔5ms,波宽0.5ms)诱发的DRP和FRP值均较相应单刺激诱发的为大,即DRP和FRP均有时间总和现象。     

A New Fine Damping Method for Solid ESG Rotor

Introduction The spin axis of ESG rotor will move alongclosed trajectories periodically after spin up, thetrajectories enclose either the maximum or theminimum principal axis of inertia depending on theinitial conditions, which is classical polhode mo-tion[1-4]. It is necessary to damp the polhode mo-tion to ensure that the spin axis is aligned with therotor maximum principal axis of inertia for ESGsignal readout. Passive damping and active damp-ing are two common schemes to fulfill this pro…     

多相位信号控制交叉口行人相位设置方法

运用相位组合技术，对行人相位与机动车相位的各种可能的组合进行了研究，提出了二次过街条件下行人相位的设计方法。与传统行人相位设计方法的对比分析表明这种行人相位设计方法缩短了行人过街最短绿灯时间，降低了过街人均延误。     

Building Real-Time Network Intrusion Detection System Based on Parallel Time-Series Mining Techniques

A new real-time model based on parallel time-series mining is proposed to improve the accuracy and efficiency of the network intrusion detection systems. In this model, multidimensional dataset is constructed to describe network events, and sliding window updating algorithm is used to maintain network stream. Moreover, parallel frequent patterns and frequent episodes mining algorithms are applied to implement parallel time-series mining engineer which can intelligently generate rules to distinguish intrusions from normal activities. Analysis and study on the basis of DAWNING 3000 indicate that this parallel time-series mining-based model provides a more accurate and efficient way to building real-time NIDS.     

以专业服务市场——恒通客车倾力打造公交运输方案解决专家

重庆恒通客车,客车制造的先行者,伴随着今年品牌建设在恒通客车的逐渐深化,新一轮的销售战略初见成效,仅半年内就开拓了多个新市场,使其市场覆盖率更大;而对于一直以来合作的老客户,恒通客车凭借其专业的公交客车研发技术和完善的售后服务,也在半年时间里获得了不少订单.     

汽油机怠速HC排放信息的符号序列直方图分析

介绍了符号序列分析中的二进制划分、直方图、Shannon熵、欧几里得范数、高阶矩等概念,在两种试验汽油机处于热怠速工况时,运用上述概念对HC排放信号进行分析和评价.     

A New Proposal of Inverse-Time Characteristics for Overcurrent Relay Based on Microcomputer

The conventional time function of electromechanical relays is hard to coordinate with other relays．In order to promote the application of inverse-time overcurrent relays，a new time function for microprocessor-type relay is proposed．The setting of the trip time for this relay is performed by determining the shortest trip time and the longest trip time，respectively．The results of analysis show that with the new time function，the inverse-time overcurrent relay is easy to coordinate with other relays and has a comparatively shorter trip time，and that the fault happens in the protective zone．