自营铁路数字调度通信系统的改造

介绍了兖州矿区自营铁路数字调度通信系统改造，及模拟传输通道数字化技术的方案设计、特点及实践。     

Real-Time Discrete Adaptive Control of Robot Arm Based on Digital Signal Processing

A discrete model reference adaptive controller of robot arm is obtained by integrating the reduced dynamic model of robot, model reference adaptive control (MRAC) and digital signal processing (DSP) computer system into an electromechanical system. With the DSP computer system, the control signal of each joint of the robot arm can be processed in real time and independently. The simulation and experiment results show that with the control strategy, the robot achieved a good trajectory following precision, a good decoupling performance and a high real-time adaptivity.     

地铁PIS系统中的视频技术

本文综合国内多个地铁PIS项目，根据PIS系统业务需求，并结合计算机视频处理技术、高清电视技术、视频编码及传输技术的发展及应用，对PIS的发展进行了探讨。     

对两种代理盲签名体制的密码学分析

代理盲签名结合了代理签名与盲签名的优点，而多级代理签名实现了签名权利在许可范围内逐级向下代理的要求。利用椭圆曲线上的双线性对，陈玲玲等人提出了一种基于身份的代理盲签名方案，胡江红等人提出了一种基于身份的多级强代理盲签名方案。给出了这两个方案的密码学分析，指出在陈玲玲等人的方案中，代理签名人可以利用授权证书计算得到原始签名人的私钥，从而可直接伪造原始签名人的签名或授权，同时指出所提的两个方案也无法满足不可追踪性．代理签名人可以将自己在签名协议中的签名和签名的消息联系起来从而跟踪消息的拥有者，从而证明了这两个方案是不安全的。     

铁路公安FLEXTRBO多基站多信道解决方案

铁路公安站点多、用户多、话务量较大,既有的模拟无线通信系统存在诸多问题,为此采用FLEXTRBO多基站、多信道联网数字无线通信系统解决方案。介绍FLEXTRBO系统网络、组成和产品特点。     

大型客站数字网络广播系统方案研究

数字网络广播系统在声音质量、管理灵活性、系统可靠性和扩展性等方面相对传统的模拟广播系统具有无法比拟的优势。针对大型客站的应用需求,本文对大规模数字网络广播系统的功能、应用模式和设计要点进行介绍。     

A lane-level road network model with global continuity

An increasing number of Intelligent Transportation System (ITS) applications require high accurate vehicle positioning, e.g., positioning at the lane-level. This requirement motives the development of modeling the road network at the lane-level. In this paper we propose a novel lane-level road network model. It can be considered an improvement to existing models in its capability of representing the road and intersection details at the lane-level in a uniform and precise way. As a result, the model can guarantee the global continuity for arbitrary map route, which better approximates the real vehicle trajectory. In addition, the map construction algorithms are also developed. Following the proposed methods, the lane parameters can be extracted efficiently under flexible precision requirement, and intersections with varying appearances can be precisely modeled with limited extra data. Experiments were performed to verify the proposed model in representing the lane-level geometrical and topological details of an urban area of Milan. The results also demonstrate the effectiveness of the map construction methods.     

海军C~3I系统中舰船通信传输集成一体化探索

通过对海军C~3I系统建设需求分析，提出了舰船通信传输集成一体化总体方案设想，着重叙述了总体方案设计要点，实现方案的关键技术及其必要性和可能性。     

数字图书馆网络安全体系研究

本文从远程接入安全、网络边界安全、馆域网安全、信息中心安全、上网行为监督管理、统一安全管理等方面论述了数字图书馆信息安全体系的构建要素,并提出了一套解决方案。     

高校数字化校园平台多校共享模式研究

文章分析了高校数字化校园建设的现状,论述了高校数字化校园多校共享平台建设的必要性。在研究了国内外教育云技术发展的基础上,构建了多校共享平台服务支撑体系,搭建了多校共享平台结构模型,设计了多校共享平台应用模式。