Qt构建北京市精品课程平台文件上传系统

文中分析了目前北京市精品课程平台文件上传部分的不足,有针对性地设计了基于Qt框架的FTP上传系统.系统分为服务器端与客户端.服务器端分为三个功能模块,模块之间相互独立,并发运行,通过OCI的方式实现与数据库之间的交互.客户端设计的界面友好,简单易用.客户端与服务器端之间通过Socket通讯,并将数据进行加密处理,保证了系统的安全性.系统整体运行高效稳定,方便了教师用户以及管理员,并且设计的系统解决了Qt框架中无法实现断点续传的功能.     

应用QT的二手书交易系统

现阶段网络购物是大多数学生消费的主要方式。在现在多数高校中,毕业生的书籍多数是廉价处理或者直接扔给了废品站,这无疑是一种对资源的浪费。本文主要研究二手书籍的回收与二次交易系统。本次设计的主要界面是用QT设计的,书籍的信息与卖家等信息用Sqlite数据库存储起来。本系统包含服务器端与客户端,学生登录客户端系统,输入年级与学院或专业,即可找到相应的书籍列表,或可上传不需要的书籍。管理员登录服务器端后可对各个用户或者书籍的信息进行分类管理。而客户端与客户端之间是通过tcp协议中的套接字来交互数据实现网络通信的。     

基于RFID的高校考勤管理系统的研究与设计

本文研究了RFID(Radio Frequency IDentification射频识别)技术的原理与其在高校考勤的应用。对基于RFID的考勤管理系统进行了设计实现。系统实现了课时、考试和会议考勤的自动化,对考勤数据进行了自动化统计,继而达到准确、快捷、自动考勤的目标。系统采用Windows Server 2008操作系统和Microsoft.Net框架进行服务器端开发。用户使用签到卡(RFID标签)验证其身份合法性,最终服务器进行统计。管理员在后台可以进行身份标签的修改,删除,请假等操作。     

模型库管理和远程调用的研究与实现

本文主要研究建立C/S结构下的数据库访问系统。背景环境是作战仿真系统,其中服务器端是以oracle10实现的模型库,客户端提供友好的人机界面,能够将模型库中模型远程下载到本地,实现模型库管理员在客户端使用浏览器或在服务器端直接访问军事模型库系统,并进行查询,添加,删除,更新等操作。     

基于ASP＋Access网络考试管理系统

系统是基于B/S模式,采用ASP＋Access技术进行设计与实现的网络考试管理系统,服务器端对数据库进行管理,客户端通过浏览器登录网络考场。     

VB．NET开发上机实验考勤系统

介绍一个利用VB．NET、＋Access数据库编制的、C／S模式结构的用于机房上机考勤的应用程序该程序界面友好、操作简便、完美地实现了无纸化考勤,并进行数据管理和客户端控制     

XML与数据库技术的结合

ＸＭＬ在数据库中的应用需借助三层应用架构来实现。这种体系结构由客户端、中间服务器及底层数据层来组成。客户端提供良好的用户界面,完成与服务器端的连接、发送用户对数据库数据的各种操作请求、接收服务器端返回的ＸＭＬ数据并从中提取出所需数据,并用ＨＴＭＬ文档显示出来。中间层服务器端通过运行一个代理程序来访问数据库管理系统中的数据和实现将多个数据源的数据集成为一个ＸＭＬ文档,并实现ＸＭＬ文档上的数据处理。中间层上的代理程序是一种在客户端应用层与底层数据层之间传递数据的工具。另外,客户端的数据变化（如数据的…     

地基沉降远程数据采集软件的设计与实现

介绍了地基沉降远程数据采集系统服务器端软件的设计与实现方法。该软件能够并发处理多个远程客户端传送过来的数据,并将数据保存到数据库中,同时采用B/S架构对采集的数据进行管理和分析,从而实现对地基沉降远程采集数据的实时监控与存储。经长时间测试,该软件运行正常,具有很强的实用性。     

高校移动教学系统设计与开发

文章主要是对高校移动教学系统进行设计与实现,开发基于Android系统的智能移动设备应用程序,使用Android Studio作为开发平台、MySQL作为服务器端后台数据库,SQLite作为客户端后台数据库.服务器端主要完成对客户端用户、资源、新闻公告等信息的管理,客户端主要完成查询课程信息、上传下载课程相关资源、课堂测试和小组讨论等功能.该系统可为大学生利用碎片化时间学习及增强师生课外互动提供参考.     

防火墙在组建局域网中的应用

防火墙作为网络安全设备越来越多地应用于局域网络与公用网络的互联中,具有服务代理、包过滤、入侵检测等功能。防火墙作为一个网络互连设备,在组建网络中还有着局域网与Internet互联、隐藏防火墙外网IP地址、隐藏内部网络、IP地址重定向、安全访问控制以及构建VPN等应用。文中结合某单位的局域网规划设计就防火墙的应用作了重要的阐述。     

Would I lie to you? Self-serving lies and other-oriented lies told across different media

This study set out to investigate the type of media individuals are more likely to tell self-serving and other-oriented lies, and whether this varied according to the target of the lie. One hundred and fifty participants rated on a likert-point scale how likely they would tell a lie. Participants were more likely to tell self-serving lies to people not well-known to them. They were more likely to tell self-serving lies in email, followed by phone, and finally face-to-face. Participants were more likely to tell other-oriented lies to individuals they felt close to and this did not vary according to the type media. Participants were more likely to tell harsh truths to people not well-known to them via email.     

合作学习在中职信息教学中的应用

合作学习理论作为一种新的学习理念已经被广泛地运用到各类学校的学习当中,经过不断地实践检验取得了不错的效果。将合作学习的相关理论运用到实践能力要求较高中职信息技术教学中,不仅可以增强学生的学习能力,通过合作学习培养学生之间互相帮助、共同进步的精神,提高他们信息技术学习的水平,还可以培养他们的团队精神,适应将来的就业需要。     

微机监测与铁道信号设备安全

目前我们铁路运输事业快速发展,全国各地都新建了高铁铁路。速度是提升了,安全问题也不能忽视。列车在运行过程中要想保证安全,就需要铁道各处的信号信息正确。控制台通过相关的信号设备将运行的指令传递给列车,以保证铁路的整体运行情况。在新的时期,需要能够全天候检测铁路安全的方法,以便维修人员能够及时了解问题并处理。本文通过对TJWX-2006型信号设备监测系统进行研究,来分析在铁路上使用微机来检测铁路的运行情况。这对研究信号设备安全有着积极的意义。     

IPv6协议下域名系统的扩展与实现

为了实现对IPv6协议的支持，需要对现有IPv4协议下的域名系统进行相应的扩展，以使其能在IPv6协议下正确地进行IP地址与域名的正向或反向解析。域名系统的扩展主要包括以下两方面：一是增加了两个新的资源记录AAAA和A6来存储IPv6地址，以实现域名到IPv6地址的正向解析；二是增加了两个新域：ip6.int和ip6．arpa，以实现IPv6地址到域名的反向解析。文中以著名的域名系统软件BIND为对象，以Linux操作系统Redhat9作为实验平台，详细介绍了基于Linux平台的域名系统对IPv6协议的扩展与实现，从而为实现IPv4到IPv6的平稳过渡打下了坚实基础。     

Taking on motion‐artifacts evaluation in the VESA FPDM

Abstract— To date, there are no well‐established and few valid candidate methods to evaluate motion artifacts, although a number of organizations are working to come to agreement on ways to characterize, analyze, and quantify them. The LCD‐TV market has vested interest to improve performance with regard to motion artifacts, since: (1) LCDs are quite susceptible to many types of motion distortions, (2)most of its primary content has motion, and (3) they can be very noticeable and objectionable to even a casual viewer. This paper is an overview of motion artifacts, and the work of the VESA FPDM (flat panel display measurements standard) group both to update FPDM to FPDM3 and to standardize methods to evaluate motion artifacts.     

基于P2P覆盖树网络的流媒体传输技术优化研究

PeerCast是一个基于P2P网络的流媒体传输系统,各节点被组织成树状来进行数据的分发.但没有一个有效的机制来维护树的平衡和保证所选取的父节点是最佳的节点.在此基础上,对该系统进行优化,在媒体数据包上加一个字节用来标识当前节点与根节点的距离,并对节点间响应消息进行优化.实验结果表明,这些优化措施能够有效的维护树的平衡和降底数据传输时延.     

Naturalistic decision-making in expert badminton players

This paper reports on a study of naturalistic decision-making in expert badminton players. These decisions are frequently taken under time-pressured conditions, yet normally lead to successful performance. Two male badminton teams participated in this study. Self-confrontation interviews were used to collect data. Inductive data analysis revealed three types of intentions during a rally: to maintain the rally; to take the advantage; and to finish the point. It also revealed eight types of decision taken in this situation: to ensure an action; to observe the opponent's response to an action; to realize a limited choice; to influence the opponent's decision; to put pressure on an opponent; to surprise the opponent; to reproduce an efficient action; and to play wide. A frequent decision was to put pressure on the opponent. Different information and knowledge was linked to specific decisions. The results are discussed in relation to research that has considered naturalistic decision-making.     

浅谈485网络布线施工

本文就如何按照485总线的施工规范进行485网络布线施工,供弱电安装工程商参考以及与相关行业技术人员进行交流。     

From remote maintenance to MAS-based e-maintenance of an industrial process

One of the main consequences of the extended enterprise is the emergence of new forms of relationships between the customer and the supplier in order to ensure the quality of service of the object throughout the life cycle. Innovative communication and co-operation methods are needed to support these new relationships. The combination of modern information processing and communication tools, commonly referred to as tele-service, offers the technical support required to access remote information. Indeed, it is easier to transfer information and knowledge to different actors than to move an actor to the site. However, even if this technical support is necessary for information communication, it is insufficient to develop a co-operation-based working situation that involves many self-motivated customers and suppliers sharing a common goal. This synergy is an emergent property of the system as a whole, and it is not expected to be obtained as a simple sum of its components. For example, a challenging problem in the field of product manufacturing is to assist the operator in its decision-making, when the system functioning is degraded, to preserve the system under service at maximum (anticipation of the failure) while remaining it in a space of allowed operation (to avoid consequences of an error in judgement). That means an evolution from tele-service to e-work and e-maintenance in particular where the assistance to operator results from collaboration of maintenance processes and experts. Consequently, this paper examines some issues and challenges involved in the evolution from the tele-maintenance of an industrial platform to the e-maintenance, and then proposes a multi-agent system-based collaboration as a solution to implement the e-maintenance experiments.