基于云计算的运动训练管理系统设计

为提升运动训练系统数据处理性能,设计了基于云计算的运动训练管理系统.系统采用B/S三层架构,硬件设施层以云硬件为基础,为功能层内运动训练各项功能实现提供保障;功能层由人员管理模块与训练管理模块等组成,实现系统具体功能;云服务应用层作为交互通道,实现使用者与系统功能之间的交互.训练管理模块是系统功能层的核心模块,其中包含...     

图书馆计算机管理系统功能研究

本文以图书馆计算机管理系统功能为研究对象,通过对国内外图书馆计算管理系统功能的发展与特点的分析,结合我国图书馆计算机管理系统的现状,试图探索出优化我国计算机管理系统功能的相应策略,推动我国图书馆计算机管理系统功能理论研究。     

数字集群通信系统及其工作原理

本文主要介绍了数字集群通信系统的系统功能和系统构成。其中重点介绍了无线子系统的系统构成和功能。     

IDEF0功能建模及在通信对抗决策系统中的应用

针对通信对抗决策系统需求分析中存在的问题,提出了运用IDEF0功能建模方法描述通信对抗决策系统功能的新思路。文章首先分析了IDEF0功能建模的基本流程,通过对通信对抗决策系统的分析,得出系统的定义、构成及目标和要求,在此基础上将IDEF0方法运用在通信对抗决策系统功能需求分析中,建立其功能模型,为通信对抗决策系统的研制开发提供有益的参考。     

高清卡口防逃费管理软件在高速公路中的应用

高清卡口系统,是一套利用当前先进的计算机技术、网络技术、图像媒体处理技术、数据库技术,实现车辆信息自动采集,并能及时进行路况分析,通行车辆管理的综合性系统平台。作为高速公路运营单位,高清卡口系统功能主要包括车辆捕获功能,车辆测速功能、高清照片抓拍功能、高清全景视频录像功能、高清车牌自动识别功能、车身颜色自动识别功能、断点续传功能、实时监控功能等等。整个系统分为外场系统、传输系统、管理平台三部分。     

对新形势下大功率中短波广播发射台(站)安全播出系统构架的探讨

本文从中短波广播发射台（站）技术运维的视角提出了安全播出系统构架模型，探讨了系统不同层次的功能和联系，阐述了表征系统功能的主要指标，提出了提升系统功能的建议：     

无线局域网管理系统WLC的设计与实现

通过对WLC(Wireless Lan Controller)系统的分析,设计了系统的架构和实现的功能,并对主要功能进行了详细的描述.在无线局域网管理的解决方案中,架构设计是非常重要的,他是整个系统成功的基础,因此要慎重的设计系统的架构,满足系统的需求.同样,强大、灵活的功能是一个系统的重要组成元素,通过对系统进行需求分析,设计出无线局域网系统的功能.     

PLC控制在矿井提升机打点信号系统中的应用

本系统以三菱FX2N系列PLC为主控制器,根据矿井现场中提升机工作要求,进行提升机打点信号系统的设计.系统具有打点信号数字及汉字同步显示、记忆功能,语音通讯功能及适应生产的控制信号安全闭锁功能,这大大增强了系统的智能化程度和安全性.本系统已初步试用,结果表明：系统运行可靠、性能稳定,符合煤矿安全生产的需要.本文重点介绍系统构成及功能.     

辽宁广播电视台播总控系统介绍

本文主要从总体构成、分控系统、三级备播功能、独特的垫片功能、显示系统、总控系统、时钟系统、报警系统、源名跟随功能等几个方面对辽宁台的播总控系统进行介绍,并阐述了一些独特的设计思路。     

一种语言实时检测和处理系统

本文介绍了一种用于电话语音检测及处理的智能处理系统,分析了该系统的功能,设计了实现其功能的系统的网络结构、硬件结构,同时对系统功能进行模块化划分,阐述分析了各软件模块的功能,并分析了语音资料的处理流程及系统各模块的关系。     

舰载雷达及电子对抗装备性能测试评估系统的设计与实现

利用软硬件结合方式,设计一种针对舰艇雷达及电子对抗装备主要性能的测试及评估系统,实现非接触测试,无须上舰,在距离舰艇100~200 m的码头,采用"定量比对法"对雷达及对抗装备的关键参数进行测试和评估。     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

3G接入技术中认证鉴权的安全性研究

对3G用户接入时的认证鉴权进行分析和研究，介绍了3G的安全体系结构，详细分析了3G的认证和鉴权机制和过程、用户信息的加密和完整性保护的过程和方法、密钥协商机制，并指出了3G认证鉴权机制可能存在的缺陷，最后对2G和3G的互通方面的安全性和2G与3G安全上下文之间转换运算的算法进行了分类和剖析。     

All-Learning: The state of the art of the models and the methodologies educational with ICT

This paper presents a systematic review of models and methodologies that integrate information and communication technologies (ICT) and education. The systematic review was based on the methodology of Kitchenham. The steps used and developed correspond to the steps proposed in the methodology. The starting point of the review are the research questions, then keywords, selection of the databases, definition of the inclusion and exclusion criteria, the definition of the search chains, search process and selection of papers, the analyzes of the paper and the results of the systematic review to answer the questions posed. In the systematic review, 919 papers were found in 6 academic databases and 129 relevant papers were selected. The work developed intends to know the different models and methodologies that integrate the ICT and the education. Develop an analysis and characterize to find common elements among models and methodologies. The idea is to find limitations, disadvantages and spaces that allow to propose a new model. This systematic review is the first step in the development of a doctoral research in which the development of a U-Learning model based on Connective Learning and Experience Learning is proposed.     

小信号多腔速调管主要性能指标简化分析

介绍了速调管在我国的发展现状和小信号条件下速调管的各种主要性能指标的简化分析方法。在这种简化分析方法中,首先不考虑非线性和相对论效应等带来的影响,并把多腔速调管看作是几个双腔速调管的级联,得出了增益、效率、带宽和输出功率等重要参数的计算公式。然后通过给出部分参数的修正系数说明了这种简化分析方法的实用价值及理论指导意义。     

基于S3C2440的智能模拟人的控制

以S3C2440为平台,实现了S3C2440单板机对智能模拟人的控制箱,按压和通气功能的控制,以及S3C2440与上位机通信功能,通过对内核的裁剪和驱动及控制程序的编写,不仅可以实现各种控制箱的操作,而且也可以对模拟人的按压和通气模拟操作功能进行控制,产生与之对应的各种模拟反应。最后,提出了用设置加权系数的办法解决按压和通气控制条反应速率过缓问题。     

GPS 接收机交调互调敏感度测试方法研究

GPS 卫星定位技术已广泛应用于航空航天系统。本文通过阐述GPS 接收机的工作原理及GPS 信号的特点,分 析了接收机交调互调传导敏感度测量原理,扩展了GPS 接收机交调互调传导敏感度的试验方法。该测试方法快捷、易 于掌握,便于得到接收机互调交调抑制比参数。     

直流电源输出的纹波和噪声的测量

对于直流电源纹波和噪声的测量,不同的测量方法测量的结果往往差别较大。针对这个问题,本文先介绍了电源输出的纹波和噪声的基本概念,并在此基础上介绍了三种常见的纹波和噪声的测量方法：直接测量的方法、去掉探头和探头接地线的测量方法和使用同轴电缆的测量方法。通过分析、比较,阐明了不同测量方法之间的区别,明确了对示波器的要求及测量的注意事项,以使大家能够根据具体情况选用适宜、方便的测量方法,准确地测量到直流电源输出的纹波和噪声。     

Designing an Embedded Video Processing Camera Using a 16-bit Microprocessor for a Surveillance System

This paper describes the design and implementation of a hybrid intelligent surveillance system that consists of an embedded system and a personal computer (PC)-based system. The embedded system performs some of the image processing tasks and sends the processed data to the PC. The PC tracks persons and recognizes two-person interactions by using a grayscale side view image sequence captured by a stationary camera. Based on our previous research, we explored the optimum division of tasks between the embedded system and the PC, simulated the embedded system using dataflow models in Ptolemy, and prototyped the embedded system in real-time hardware and software using a 16-bit CISC microprocessor. This embedded system processes one 320 × 240 frame in 89 ms, which yields one-third of the rate of 30 Hz video system. In addition, the real-time embedded system prototype uses 5.7 K bytes of program memory, 854 K bytes of internal data memory and 2 M bytes external DRAM. Koichi Sato is a Ph.D. student in the Department of Electrical and Computer Engineering at The University of Texas at Austin. He earned his B.S. in University of Tokyo, Japan in 1993. He worked for Automotive Development Center in Mitsubishi Electric Corporation where he was involved in lane and automobile recognition in vehicle video processing products such as automatic cruise control and drowsiness detection systems. He enrolled in the current University at 1998 and received an M.S in 2000. In his Master's thesis he worked on human tracking and human interaction recognition. His current work includes velocity extraction using the TSV transform, object tracking, and 3D object reconstruction. Brian L. Evans is a tenured Associate Professor in the Department of Electrical and Computer Engineering at The University of Texas at Austin. His research and teaching efforts are in embedded real-time signal and image processing systems. In signal processing, his research group is focused on the design and real-time software implementation of ADSL and VDSL transceivers, for high-speed Internet access. In image processing, his group is focused on the design and real-time software implementation of high-quality halftoning for desktop printers, smart image acquisition for digital still cameras, and 3-D sonar imaging systems. In signal and image processing, Dr. Evans has published over 100 refereed conference and journal papers. Dr. Evans is the primary architect of the Signals and Systems Pack for Mathematica, which has been on the market since October 1995. He was a key contributor to UC Berkeley's Ptolemy Classic electronic design automation environment for embedded systems, which has been successfully commercialized by Agilent and Cadence. His BSEECS (1987) degree is from the Rose-Hulman Institute of Technology, and his MSEE (1988) and PhDEE (1993) degrees are from the Georgia Institute of Technology. From 1993 to 1996, he was a post-doctoral researcher in the Ptolemy project at UC Berkeley. He is a member of the Design and Implementation of Signal Processing Systems Technical Committee of the IEEE Signal Processing Society, and a Senior Member of the IEEE. He is the recipient of a 1997 National Science Foundation CAREER Award. J.K. Aggarwal has served on the faculty of The University of Texas at Austin College of Engineering since 1964 and is currently Cullen Professor of Electrical and Computer Engineering and Director of the Computer and Vision Research Center. His research interests include computer vision and pattern recognition focusing on human motion. A Fellow of IEEE since 1976 and IAPR since 1998, he received the Senior Research Award of the American Society of Engineering Education in 1992, the 1996 Technical Achievement Award of the IEEE Computer Society and the graduate teaching award at The University of Texas at Austin in 1992. He has served as Chairman of the IEEE Computer Society Technical Committee on Pattern Analysis and Machine Intelligence (1987--1989); Director of the NATO Advanced Research Workshop on Multisensor Fusion for Computer Vision, Grenoble, France (1989); Chairman of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition (1993), and President of the International Association for Pattern Recognition (1992--1994). He is a Life Fellow of IEEE and Golden Core member of IEEE Computer Society. He has authored and edited a number of books, chapters, proceedings of conferences, and papers.     

位屏蔽多叉树搜索射频识别防碰撞算法

针对RFID树型防碰撞算法中时隙数多、数据通行量大等问题,提出了一种改进的多叉树防碰撞算法,阅读器准确检测碰撞位并向标签反馈碰撞位信息,标签对阅读器已知的ID位进行屏蔽,把ID号转换成连续碰撞的序列号.阅读器利用屏蔽位信息和标签返回的碰撞位编码信息,对标签进行分层分类搜索.通过对标签ID进行屏蔽,阅读器和标签间仅发送对方不知道的碰撞位信息.该算法减少了碰撞时隙和识别时隙,避免了空闲时隙,减少了阅读器和标签间的数据通信量.理论分析和仿真结果表明,该算法减少了系统的时隙总数和数据通信量,提高了阅读器的识别效率.