PDA的介绍及其应用

本文首先介绍了PDA的定义、分类、发展和主流操作系统,然后阐述了其主要应用的领域,最后以一个实例讲解PDA在仓库管理中的实际应用。     

基于PDA的城市实体信息采集系统设计与实现

现有数字城市模型大多缺乏对模型属性信息的认知表达手段,本文设计了一种基于PDA的城市实体信息采集系统,系统支持坐标数据和文本、图像、视频等多种非格式化数据格式的输入输出,实践结果表明该系统能够满足城市实体信息数据属性信息获取的应用需求。     

基于PDA的肉牛养殖可追溯系统的设计与实现

为提高肉牛养殖信息采集、传输的效率和准确性,本文通过对肉牛养殖企业的实地调研,在分析肉牛养殖流程的基础上,对肉牛养殖环节质量安全的关键信息进行了分析,并设计了基于PDA肉牛养殖质量安全可追溯系统的整体结构和功能模块,重点分析了该系统的实现技术。该系统改变了肉牛养殖纸质、人工的信息采集方式,实现了养殖场信息的快速、高效、准确的采集与传输。     

Informal learning with PDAs and smartphones

Abstract There has been increasing interest in informal learning in recent years alongside interest in how such learning can be supported by technology. However, relatively little is known about the extent to which adults make use of their own mobile devices to support informal learning. In this study, a survey was used to investigate whether, and to what extent, experienced users of mobile devices use their mobile devices to support intentional informal learning. If so, do they make use of mobile device connectivity to support opportunistic informal learning and does such connectivity support or encourage collaborative informal learning? Experienced mobile device users were recruited from web forums and business, and asked whether they used their devices to support informal learning. A pattern of learning uses emerged, some of which deployed the mobile device capabilities relatively unchanged, others triggered adaptations to typical learning activities to provide a better fit to the needs of the learner. These informal learning activities provided the basis for the design of a flexible mobile learning framework that can be extended to support developments in mobile technology, and increasing use of Web 2.0 technologies by informal learners.     

Educational affordances of PDAs: A study of a teacher’s exploration of this technology

This paper reports on a case study of a teacher from a technical education institution who explored the educational affordances of PDA technology over a period of six months. Based on this teacher’s perspectives, the study was designed to inform our own understanding of educational affordances of this new and emerging technology. Understanding of educational affordances is important in the context of planning a suitable intervention to support pedagogically effective integration of PDA technology. The study explicated a set of five affordances of PDA technology: as a multimedia-access tool, connectivity tool, capture tool, representational tool and analytical tool. We call on further research to expand this set into a more comprehensive collage of educational affordances of PDA technology.     

基于蓝牙通信的汽车检测系统的研究

本文采用蓝牙技术和CPS技术研制了一种汽车检测系统.提出了利用GPS进行速度检测和蓝牙模块进行通信的系统总体设计方案.设计了系统中的检测终端电路,开发了GPS接口和蓝牙模块的串行接口.制定了检测终端中单片机模块电路与CP3和PDA的通信协议,编写了通信软件,实现了对汽车检测数据的无线传输.提高了汽车检测的工作效率和水平.     

基于PDA和GIS的嵌入式移动巡线系统的研究

这篇论文研究的目的是把嵌入式GIS技术和CPS,PDA结合起来,开发出移动巡线系统.此系统可用于电力输电,移动通信,石油和天然气等输送线路的巡查,既可方便对巡线员工作效率的审查,也可实现对巡查线路的导航,指引巡线员正确,高效的巡线.     

GPS与PDA间蓝牙无线串口通信的研究

蓝牙是一种低成本、高可靠性的无线传输技术,蓝牙通信是实现PDA上GPS导航定位的首要环节。本文首先对GPS实时数据进行一定分析;然后详细介绍了Visual C# 2005环境下GPS与PDA蓝牙通信的实现流程,包括资源参数配置、打开串口、通信读写操作和关闭串口四个过程;继而基于PDA平台开发了相应的程序,实现了本文提出的GPS与PDA间蓝牙无线通信。实验结果表明,本文所述方法正确、可靠,适用于GPS与PDA间蓝牙通信。     

基于SIP协议的PDA软电话的设计与实现

近年来,随着VoIP技术的发展,PDA、手机等无线终端已经具备了软电话功能。本文以SIP协议为基础,在PDA平台上搭建了软电话系统模型,实现了PDA软电话与PsTN电话的通话功能,并对通话QoS进行了一系列测试。文中详细介绍了SIP软电话以及windowsMobile5．0开发的基本方法,提出了一种基于SIP协议的PDA软电话的具体实现方案,包括开发环境搭建、软电话结构、软电话信令、语音采集、编解码等。     

基于移动设备的操作技能考核系统研究

分析了当前操作技能考核系统的不足,提出了一个基于移动设备的网络操作技能考核系统的设计方案。对系统的整体框架和功能模块进行了介绍,并对各种数据同步方式的优缺点进行了分析比较。最后指出了整个系统存在的不足。