彩色防滑减速带铺装施工

一、彩色防滑减速带铺装对道路表面的要求：（一）新沥青路面：不推荐在新的沥青路面施工，应经过3至4周的车辆通行时间，以便路面沥青固化、稳定;（二）新水泥路面：新的水泥路面需经过28d的活化后．再通过机械打磨清除掉水泥表面的浮浆;（三）旧沥青路面：可直接在其表面施工;（四）旧水泥路面：采用机械打磨，拉毛、粗化表面．以增加附着力;（五）破损、开裂的路面需经过修理补平后方可施工。     

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。     

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。     

用危险预警系统实现汽车的主动安全性

介绍了汽车行驶危险预警系统的组成及其子系统的功能 ,讨论了如何运用该系统实现汽车行驶时的几种危险预警的主动安全性能 ,并探讨了安全车距的数学模型及其在系统中的应用     

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…     

主动磁轴承的神经网络辨识研究

简述了主动磁轴承的工作原理及数学模型,在传统系统辨识的基础上提出了基于BP神经网络的非线性辨识方案.通过闭环控制使转子稳定悬浮,并在控制器的输出信号中加入随机噪声,以使系统被充分激励.按照10 kHz的采样频率对磁轴承的I/O数据进行采样,以用于磁轴承特性的辨识.对某单自由度磁轴承的仿真表明,神经网络模型能够以很高的精度逼近磁轴承的输入输出数据,且对不同的输入信号有较好的泛化能力,验证了所提方案的有效性.     

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.     

COLOR AC-PDP ENHANCEMENT OF LOW LEVELS IMAGE QUALITY WITH DYNAMIC MODIFYING SUB-FIELDS CODE

Based on the ＂Grayscales average distribution＂ method which equally distributes the input gray levels to output gray levels, three improved methods named： ＂Reduce the gray range expressed by the less significant subfields＂, ＂Low levels preset＂ and ＂Modify the exponent of inverse-gamma function＂ are proposed in this paper. Using these methods, the inverse-gamma relation subfields code can be obtained easily which can improve the low level expressions of AC-PDP. And a program, ＂ gray scales distribution validate program＂, which can enhance the expressions of the demanded gray levels range, is also proposed in this paper.