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1.
结合实践研究,提出了一个移动Web位置服务的整体框架,并对已有相关技术成果进行分析对比。探讨了该领域未来的研究工作。  相似文献   

2.
随着移动终端的普遍应用,无线通信技术和地理信息系统的飞速发展,基于位置的服务LBS(Location Based Service)与移动GIS(Geographic Information system)相结合的应用模式已成为研究热点,并且开拓了一个具有无限潜能的市场. 本文首先论述了基于位置服务的移动GIS的基本概念,探讨了Android开发平台的系统架构与基于LBS的移动GIS体系结构,在此基础上设计了一个基于android平台的移动GIS系统,该系统在传统移动GIS的基础上进行了改进,克服了传统移动GIS缺乏社交互动性的缺点,不仅能够实现准确的实时定位与轨迹记录查询,还能够与好友互相分享实时位置以及进行多人轨迹的同时追踪,可以用于对老人儿童等弱势群体进行实时监护,也可以用于企业员工、车辆的管理调度等.  相似文献   

3.
提出了一种移动位置服务的体系结构,开发、设计了其中的关键部件移动位置服务网关和位置服务应用平台,给出了实现位置服务的应用程序设计流程。经过实际测试表明,系统能够应用于移动通信网络为用户提供位置服务。  相似文献   

4.
基于个性化移动位置服务中自适应地图的研究   总被引:1,自引:0,他引:1  
移动位置服务是一种新兴的无线增值业务,能够利用无线网络为移动用户提供基于位置的信息服务。个性化的移动位置服务是国内外研究的焦点,而自适应地图是其中最重要的方面之一。如何良好地进行地图的设计是本文研究的重点,由此提出了一种自适应地图形成模型,依据此模型可以较好地指导我们进行地图设计,进而满足移动位置服务中要求的易读性、动态性以及交互性。文章最后阐述了一种移动位置服务地图服务系统逻辑框架,并对其予以具体实现,验证了自适应地图服务系统的可行性和可用性。  相似文献   

5.
BREW平台下移动位置服务系统研究和实现   总被引:2,自引:0,他引:2  
赵俊  周明天 《计算机应用》2004,24(Z1):64-65
详尽阐述了BREW平台下移动位置服务的应用开发, 分析了移动位置服务的系统结构和移动定位技术.总结两种定位业务模型,即自我定位和第三方定位,并详细介绍了BREW平台下移动位置服务的实现方法及应用开发的特点.  相似文献   

6.
学校管理中,为了督促和管理学生,加强考勤管理是一种非常必要的手段。传统的手工课堂考勤管理存在效率低、信息分散、实时性差以及难于统计等问题,基于此,利用校园WiFi网络与智能手机,提出了基于位置服务移动考勤系统的解决方案。此系统可以实现登录管理、课程信息管理、学生信息管理、移动定位考勤和用户权限管理等功能。  相似文献   

7.
樊磊 《程序员》2013,(5):38-41
从前:几乎每个司机的手套箱里都放着一本全国地图,仪表台上部粘着一个指南针。想去一个不认识的地方需要翻半天地图,高科技点的出门前打开电脑上地图网站查询路线,然后记在纸片上以备不时之需。  相似文献   

8.
分析了移动终端位置服务的必要性和可行性,阐述了移动终端服务系统的基本内容,设计出移动终端位置服务系统的结构框架,给出了移动终端位置服务系统中客户端、服务器端及第三方内容和地理移动服务3个关键部分的实现模式,最后展望了移动终端位置服务系统的应用前景.  相似文献   

9.
随着位置服务的蓬勃发展,移动对象查询作为一项重要技术,成为研究的热点并有着广泛的应用需求.基于.Net框架设计并实现了一个面向位置服务的空间查询处理原型系统,设计了面向位置服务的空间查询处理原型系统体系结构;实现了预测K近邻查询处理子系统、预测范围查询处理子系统、多用户连续查询处理子系统.介绍了原形系统中的2个关键索引结构.展示了原形系统的功能和用户界面.该系统为进一步的理论研究和算法应用奠定了基础.  相似文献   

10.
在TPR*tree的基础上提出了DTPR*tree索引结构, 引进了事务时间和有效时间。它能索引移动物体过去、当前和未来的位置信息,支持基本位置查询和空间约束查询,有很好的空间、查询和更新效率。  相似文献   

11.
提出一个应用于移动网络的Web服务交互通信体系架构,其将基于XML的系统通信的负担从移动客户转移到外部中间件上,该中间件像网关一样,使用快速的二进制协议以客户/服务器方式与移动设备进行轻量级通信,并同时负责解析对Web服务的请求。  相似文献   

12.
在分析现有的移动数据库体系结构的基础上,将移动代理技术和Web服务以及语义信息引入到移动数据库,提出了一个客户端/移动代理黼服务/服务器4层体系结构以及基于此体系结构的移动客户端数据管理模型(MDM)。  相似文献   

13.
在分析了移动环境的特点以及传统J2ME应用程序Web Services调用的问题之后,针对传统移动环境下调用Web Ser-vices存在的问题,提出了基于Mobile Agent并结合订阅的Web Services调用模型,讨论了该模型的原理以及方法,提出了简单消息通信模式,代理服务器和订阅机制以及移动代理迁移策略.最后,结合该改进模型在中石化胜利油田中的实际应用,总结了它适用于移动环境的几个特点,比较了改进模型与传统模型调用Web Services的效率,表明了其正确性和适用性.  相似文献   

14.
Recently, as the growth of the wireless Internet, PDA, and HPC, the focus of research and development has been changed to LBS (location based service). To offer LBS efficiently, there must be a real-time GIS platform that can deal with dynamic status of moving objects and a location index which can deal with the characteristics of location data. Therefore, in this paper, we studied the real-time mobile GIS based on the HBR-tree to manage mass of location data efficiently. The real-time mobile GIS mainly consists of the HBR (Hash Based R)-tree and the real-time GIS platform. The HBR-tree is a combined index type of the R-tree and the spatial hash index. Although location data are updated frequently, update operations are done within the same hash table in the HBR-tree, so it costs less than other tree-based indexes. The real-time GIS platform consists of a real-time GIS engine, a middleware, and a mobile client.  相似文献   

15.
Emerging mobile services, including m-commerce, have received considerable interest among researchers, developers, service providers, and users. Some of these mobile services will be group-oriented and thus require the support for group communications among mobile users. In this paper, several group-oriented mobile services and their specific requirements are presented and discussed. Several wireless solutions are also presented to meet the diverse and complex requirements of group-oriented mobile services.  相似文献   

16.
User needs for location-aware mobile services   总被引:2,自引:2,他引:2  
Mobile contexts of use vary a lot, and may even be continuously changing during use. The context is much more than location, but its other elements are still difficult to identify or measure. Location information is becoming an integral part of different mobile devices. Current mobile services can be enhanced with location-aware features, thus providing the user with a smooth transition towards context-aware services. Potential application fields can be found in areas such as travel information, shopping, entertainment, event information and different mobile professions. This paper studies location-aware mobile services from the user's point of view. The paper draws conclusions about key issues related to user needs, based on user interviews, laboratory and field evaluations with users, and expert evaluations of location-aware services. The user needs are presented under five main themes: topical and comprehensive contents, smooth user interaction, personal and user-generated contents, seamless service entities and privacy issues.  相似文献   

17.
Extant research has focused on the initial adoption and usage of mobile services and paid little attention to the post-adoption and continuance usage. However, unless users continue using mobile services, service providers cannot achieve success. Drawing upon the expectation confirmation theory, this research develops a mobile post-adoption model. The post-adoption behaviour includes three variables: continuance intention, recommendation and complaint. We conducted data analysis with partial least squares. The results indicated that expectation confirmation, perceived ease of use, perceived usefulness and usage cost significantly affect users' satisfaction, further determining their post-adoption behaviour. In addition, perceived usefulness has a direct effect on the continuance intention.  相似文献   

18.
Understanding the behavior of mobile data services consumers   总被引:4,自引:1,他引:4  
Due to rapid advances in the Internet and wireless technologies, a ubiquitous computing world is becoming a reality in the form of mobile computing. At the center of this phenomenon is mobile data services which arise from the convergence of advanced mobile communication technologies with data services. Despite the rapid growth in mobile data services, research into consumers’ usage behavior is scarce. This study attempts to identify and empirically assess the factors that drive consumers’ acceptance of mobile data services. A research model based on the decomposed theory of planned behavior and incorporating factors that represent personal needs and motivations in using mobile data services is presented. The model is tested via an online survey of 811 consumers of four categories of mobile data services (i.e., communications, information content, entertainment, and commercial transactions) associated with different usage contexts. We found that attitude, social influence, media influence, perceived mobility, and perceived monetary value influence consumers’ intention to continue usage of mobile data services. In addition, perceived ease of use, perceived usefulness, and perceived enjoyment influence attitude toward continued usage of mobile data services. Finally, separate analysis of the different categories of mobile data services highlights the influence of individual usage context on consumers’ behavior.
Kar-Yan TamEmail:
  相似文献   

19.
识别用户出行的交通方式,对理解用户移动性、交通状况的分析和预测、社会活动模式挖掘等方面起着非常关键的作用。随着无线网络技术的快速发展,越来越多的传感器被用于收集移动数据,如何通过收集的信息准确地识别用户不同的交通出行方式,近年来得到了广泛的研究。针对已有的从不同角度识别交通方式的方法,首先介绍了每种方法的具体内容及应用,然后对不同方法进行分类研究,并重点分析了各类方法的特点,分析几种不同方法在不同条件下的识别精确度,最后,给出了交通方式识别方法的进一步研究方向。  相似文献   

20.
为了在使用基于位置的服务时用户的位置信息不被不可信的位置服务提供商所泄漏,k-匿名位置隐私保护已被广泛研究.然而在集中匿名器被黑客控制时原k-匿名算法会泄漏所有用户的位置隐私,在进行k个最近邻目标查询时对网络的负载较重,而SpaceTwist算法又不能保证k-匿名.提出了一种基于经纬网格的递增KNN位置隐私保护查询算法,将经典的k-匿名算法与SpaceTwist算法相杂交,并引入经纬网格代替原来精确的位置上报给集中匿名器,从而解决了上述问题.实验证明基于经纬网格的递增KNN查询算法比较节省从集中匿名器到位置服务提供商的服务器之间的网络流量.  相似文献   

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