共查询到20条相似文献,搜索用时 140 毫秒
1.
赵世范 《A&S:安防工程商》2013,(11):48-50
最近几年,云计算发展迅猛,各种技术和应用层出不穷。Google以发表学术论文的形式公开其云计算三大技术:GFS、MapReduce和BigTable,并在2009年推出Google应用软件引擎(Google App Engine,简称GAE)。Amazon在2006年推出简单存储服务(S3)和弹性计算云(EC2),并提供Amazon云计算服务(Amazon Web Services,简称“AWS”)。微软也在2008年发布云计算平台Azure,向开发人员提供一个在线开发、储存和服务代管的环境。在这些IT巨头推动下,互联网领域迅速掀起了一股云计算的浪潮。 相似文献
2.
网络教学平台是E-Learning实施的基本支撑工具,随着以Google为代表的云计算和Web2.0社会性软件的兴起,越来越多的网络教学平台将走向社会化服务。而基于云计算的学习管理系统EDU2.0,就是其中之一。 相似文献
3.
4.
何银 《中国信息技术教育》2010,(7):76-78
网络教学平台是E-Learning实施的基本支撑工具,随着以Google为代表的云计算和Web2.0社会性软件的兴起,越来越多的网络教学平台将走向社会化服务. 相似文献
5.
张运涛 《计算机光盘软件与应用》2012,(6):1-2
本文对Google推出的云计算技术方案进行了全面的解析,重点讨论了Google云计算的四个核心技术:GFS、MapReduce和Bigtable,最后提出了基于Google云计算核心技术的水利信息系统技术框架,并论述了其优势及不足。 相似文献
6.
7.
首先介绍了云计算产生的背景、概念、基本原理和体系结构,然后以Google系统为例详细阐述了云计算的实现机制。云计算是并行计算、分布式计算和网格计算等计算机科学概念的商业实现。Google拥有自己云计算平台,提供了云计算的实现机制和基础构架模式。该文阐述了Google云计算平台:GFS分布式文件、分布式数据库BigTable及Map/Reduce编程模式。最后分析了云计算发展所面临的挑战。 相似文献
8.
9.
10.
先介绍了云计算产生的背景、概念、基本原理和体系结构,然后以Google系统为例详细阐述了云计算的实现机制。云计算是并行计算、分布式计算和网格计算等计算机科学概念的商业实现。Google拥有自己云计算平台,提供了云计算的实现机制和基础构架模式。该文阐述了Google云计算平台:GFS分布式文件、分布式数据库BigTable及Map/Reduce编程模式。最后分析了云计算发展所面临的挑战。 相似文献
11.
传统的搜索引擎不能代替用户实行实时监控,为了解决这个问题,提出了定向搜索监控技术,用户可以根据自己的需求定制任务,包括指定搜索范围和搜索主题,系统按用户定义周期监控,并将结果及时主动地反馈给用户。以Google云平台Google App Engine作为开发平台,利用其提供的多项云服务,有效地解决了计划任务管理、多任务触发以及高并发等问题。重写了通用网络爬虫,通过算法改进提出了定向网络爬虫模型,定向网络爬虫与云端强大的服务器相结合,极大地缩短了爬行时间,提高了搜索监控效率。云平台和搜索监控技术的结合是平台即服务思想的一次成功实验。 相似文献
12.
13.
针对目前在教学资源库建设方面存在的问题,提出了基于GoogleAppEngine的教学资源库建设的思想,同时由于GoogleAppEngine使用的BigTable数据库并不支持传统的关系型数据库,因而通过数据持久化技术实现资源库在云端的存储。 相似文献
14.
针对医疗信息化与互联网应用现状, 提出面向区域移动医疗网络服务平台概念. 在分析移动医疗及其发展现状、云计算及其关键技术和Android平台应用开发模式的基础上, 首先提出基于云计算的移动医疗服务平台整体架构, 并分别从信息资源提供层、云计算平台层、医疗服务层和移动应用层等四个方面进行阐述; 然后在研究Google App Engine云服务平台的基础上, 对基于GAE的移动医疗服务平台的服务器端与客户端技术、数据模型等关键技术进行详细描述; 最后给出基于GAE的移动医疗服务平台的系统实现, 分别从平台服务器端和移动客户端两方面进行描述, 其中客户端实现基于Android移动操作系统, 为普通用户提供专家门诊信息、医药用品信息及其他功能. 相似文献
15.
为了提供虚拟化、高扩展和高性能的并行数据挖掘平台,提出了基于云计算平台的并行数据挖掘模型。文章中首先在GoogleAppEngine平台的基础上扩展了数据规约功能,然后提出了并行数据挖掘平台的系统构架和层次结构,最后给出了平台中各功能模块的具体设计和实现细节。实验分析表明基于云计算平台的并行数据挖掘系统执行效率要比单机系统高,并随着数据量的增大,效率优势越明显。 相似文献
16.
Cloud computing is shaping the cyber world and evolves as a key computing and service platform for sharing resources including platforms, software applications and everything in the form of services. This is known “X as a Service”. Although it brings our age unparalleled computing ability and economic benefits, the application of cloud computing is still limited currently in the cyberspace due to the cloud services can only reside in cloud instead of our daily life environment. In fact, there are still a plethora of physical position based on-site service demands that cloud computing could help little due to the “cyber limitation”. In this paper, we aim to integrate the cyber world and the physical world by bringing up the idea of “Robot Cloud” to bridge the power of robotics and cloud computing. To make it possible, we design a novel Robot Cloud stack to support our idea and adopt the service-oriented architecture (SOA) to make the functional modules in the Robot Cloud more flexible, extensible and reusable. Then we develop a prototype of Robot Cloud using the popular Google App Engine to demonstrate our design method. Finally, we conduct the simulation experiments with a “robot show” application scenario to evaluate our scheduling policy and identify the effect of different request distributions and robot center solutions. 相似文献
17.
Software vendors increasingly aim to apply the Software-as-a-Service (SaaS) delivery model instead of the traditional on-premise model. Platforms-as-a-Service (PaaS), such as Google App Engine and Windows Azure, deliver a computing platform and solution stack as a service, but they also aim to facilitate the development of cloud applications (SaaS). Such PaaS offerings should enable third parties to build and deliver multi-tenant SaaS applications while shielding the complexity of the underpinning middleware and infrastructure. This paper compares, on the basis of a practical case study, three different and representative PaaS platforms with respect to their support for SaaS application development. We have reengineered an on-premise enterprise application into a SaaS application and we have subsequently deployed it in three PaaS-based cloud environments. We have investigated the following qualities of the PaaS platforms from the perspective of SaaS development: portability of the application code base, available support for creating and managing multi-tenant-aware applications, and quality of the tool support. 相似文献
18.
随着云计算技术的不断发展,基于云计算定制的服务器在互联网和数据中心的应用日益广泛,各种解决方案层出不穷。本文通过分析服务器和云计算的技术特点,比较各种硬件解决方案的异同,确定最适合云计算资源池应用的硬件支撑方案。 相似文献
19.
Cloud computing enables many applications of Web services and rekindles the interest of providing ERP services via the Internet. It has the potentials to reshape the way IT services are consumed. Recent research indicates that ERP delivered thru SaaS will outperform the traditional IT offers. However, distributing a service compared to distributing a product is more complicated because of the immateriality, the integration and the one-shot-principle referring to services. This paper defines a CloudERP platform on which enterprise customers can select web services and customize a unique ERP system to meet their specific needs. The CloudERP aims to provide enterprise users with the flexibility of renting an entire ERP service through multiple vendors. This paper also addresses the challenge of composing web services and proposes a web-based solution for automating the ERP service customization process. The proposed service composition method builds on the genetic algorithm concept and incorporates with knowledge of web services extracted from the web service platform with the rough set theory. A system prototype was built on the Google App Engine platform to verify the proposed composition process. Based on experimental results from running the prototype, the composition method works effectively and has great potential for supporting a fully functional CloudERP platform. 相似文献
20.
GoogleMap等网站为企业构建基于地理信息的应用提供了方便且经济的二次开发平台,但其实现技术是基于Web的。本文讨论在基于ArcGIS Engine的桌面应用中利用Google Static Map服务实现背景地图显示的方法,这个方法也可以适用于与googlemap类似的其它公共平台。 相似文献