针对目前机车信息系统大多采用浏览器/服务器(Browser/Server,B/S)结构开发,而基于Web的监视系统在实时性方面存在不足,通过分析交互式网页应用的网页开发技术(Asynchronous Javascript and XML,AJAX)应用于机车智能维护系统的可行性与...针对目前机车信息系统大多采用浏览器/服务器(Browser/Server,B/S)结构开发,而基于Web的监视系统在实时性方面存在不足,通过分析交互式网页应用的网页开发技术(Asynchronous Javascript and XML,AJAX)应用于机车智能维护系统的可行性与必要性,提出了利用可扩展标记语言(Extensible Markup Language,XML)结构封装通用分组无线服务(General Packet Radio Service,GPRS)信息的方案,给出了AJAX技术应用于机车智能维护系统的方法,并用实例证明其在实际应用中的可行性。展开更多
In the era of Web2.0, AJAX as one of the core technology to provide asynchronous communication with the server＇s ability to solve most of the Web site to force the user to enter the ＂submit, wait for redisplay proce...In the era of Web2.0, AJAX as one of the core technology to provide asynchronous communication with the server＇s ability to solve most of the Web site to force the user to enter the ＂submit, wait for redisplay process, so that user from requestfreed response cycle, ultimately allows developers and designers to use standard HTML / CSS / JavaScript to create a ＂desktop style Web applications. According AJAX principles and characteristics, and the combination of educational administration and educational management system based on AJAX technology solutions.展开更多
Geographic Hypermedia(GH)is a rich and interactive map document with geo-tagged graphics,sound and video ele-ments.A Geographic Hypermedia System(GHS)is designed to manage,query,display and explore GH resources.Recogn...Geographic Hypermedia(GH)is a rich and interactive map document with geo-tagged graphics,sound and video ele-ments.A Geographic Hypermedia System(GHS)is designed to manage,query,display and explore GH resources.Recognizing emerging geo-tagged videos and measurable images as valuable geographic data resources,this paper aims to design a web-based GHS using web mapping,geoprocessing,video streaming and XMLHTTP services.The concept,data model,system design and implementation of this GHS are discussed in detail.Geo-tagged videos are modeled as temporal,spatial and metadata entities such as video clip,video path and frame-based descriptions.Similarly,geo-tagged stereo video and derived data are modeled as interre-lated entities:original video,rectified video,stereo video,video path,frame-based description and measurable image(rectified and disparity image with baseline,interior and exterior parameters).The entity data are organized into video files,GIS layers with linear referencing and XML documents for web publishing.These data can be integrated in HTML pages or used as Rich Internet Appli-cations(RIA)using standard web technologies such as the AJAX,ASP.NET and RIA frameworks.An SOA-based GHS is designed using four types of web services:ArcGIS Server 9.3 web mapping and geoprocessing services,Flash FMS 3.0 video streaming ser-vices and GeoRSS XMLHTTP services.GHS applications in road facility management and campus hypermapping indicate that the GH data models and technical solutions introduced in this paper are useful and flexible enough for wider deployment as a GHS.展开更多
文摘针对目前机车信息系统大多采用浏览器/服务器(Browser/Server,B/S)结构开发,而基于Web的监视系统在实时性方面存在不足,通过分析交互式网页应用的网页开发技术(Asynchronous Javascript and XML,AJAX)应用于机车智能维护系统的可行性与必要性,提出了利用可扩展标记语言(Extensible Markup Language,XML)结构封装通用分组无线服务(General Packet Radio Service,GPRS)信息的方案,给出了AJAX技术应用于机车智能维护系统的方法,并用实例证明其在实际应用中的可行性。
文摘In the era of Web2.0, AJAX as one of the core technology to provide asynchronous communication with the server＇s ability to solve most of the Web site to force the user to enter the ＂submit, wait for redisplay process, so that user from requestfreed response cycle, ultimately allows developers and designers to use standard HTML / CSS / JavaScript to create a ＂desktop style Web applications. According AJAX principles and characteristics, and the combination of educational administration and educational management system based on AJAX technology solutions.
基金Supported by the National Natural Science Foundation of China (No.40771166 )the Henan University Foundation (No.SBGJ090605)
文摘Geographic Hypermedia(GH)is a rich and interactive map document with geo-tagged graphics,sound and video ele-ments.A Geographic Hypermedia System(GHS)is designed to manage,query,display and explore GH resources.Recognizing emerging geo-tagged videos and measurable images as valuable geographic data resources,this paper aims to design a web-based GHS using web mapping,geoprocessing,video streaming and XMLHTTP services.The concept,data model,system design and implementation of this GHS are discussed in detail.Geo-tagged videos are modeled as temporal,spatial and metadata entities such as video clip,video path and frame-based descriptions.Similarly,geo-tagged stereo video and derived data are modeled as interre-lated entities:original video,rectified video,stereo video,video path,frame-based description and measurable image(rectified and disparity image with baseline,interior and exterior parameters).The entity data are organized into video files,GIS layers with linear referencing and XML documents for web publishing.These data can be integrated in HTML pages or used as Rich Internet Appli-cations(RIA)using standard web technologies such as the AJAX,ASP.NET and RIA frameworks.An SOA-based GHS is designed using four types of web services:ArcGIS Server 9.3 web mapping and geoprocessing services,Flash FMS 3.0 video streaming ser-vices and GeoRSS XMLHTTP services.GHS applications in road facility management and campus hypermapping indicate that the GH data models and technical solutions introduced in this paper are useful and flexible enough for wider deployment as a GHS.
