基于云计算的应用架构和服务模式研究   总被引：1，自引：0，他引：1  

温晓宇 《南宁职业技术学院学报》2011,(5):97-100

从云计算的内涵、特点入手,系统性地总结和分析云计算的服务特点与设计理念,在此基础上,针对云计算对用户应用影响面最广的问题,归纳并提出了云计算机的三种基本服务模式:基于基础设施的服务、基于通用平台的服务、基于个性化用户功能的服务,分别对每一种服务模式特点和适应面进行研究。最后总结出云计算在发展过程中需要解决的几个关键问题。  相似文献   

云计算的关键技术及发展现状     

李析  廖志恒 《九江职业技术学院学报》2011,(2):24-25

云计算是一种基于互联网的计算方式,通过这种方式,可以将共享的软硬件资源和信息按需提供给计算机和其他设备。本文主要解释了云计算的概念,详细介绍了云计算的关键技术和发展现状。  相似文献   

Nearest neighbor search algorithm based on multiple background grids for fluid simulation     

郑德群  武频  尚伟烈  曹啸鹏 《上海大学学报(英文版)》2011,15(5):405-408

The core of smoothed particle hydrodynamics (SPH) is the nearest neighbor search subroutine. In this paper, a nearest neighbor search algorithm which is based on multiple background grids and support variable smooth length is introduced. Through tested on lid driven cavity flow, it is clear that this method can provide high accuracy. Analysis and experiments have been made on its parallelism, and the results show that this method has better parallelism and with adding processors its accuracy become higher, thus it achieves that efficiency grows in pace with accuracy.  相似文献   

Space- and time-efficient approach for virtual machine provisioning     

胡博林  雷州  许东  李建敦 《上海大学学报(英文版)》2011,15(5):451-455

As a new promising paradigm, cloud computing can make good use of economics of scale and elastically deliver almost any IT related services on demand. Nevertheless, one of the key problems remaining in cloud computing is related to virtual machine images, which require a great amount of space/time to reposit/provision, especially with diverse requests from thousands of users simultaneously. In this paper, by using the splitting and eliminating redundant data techniques, a space and time efficient approach for virtual machines is proposed. The experiments demonstrate that, compared with existing solutions, our approach can conserve more disk space and speed up the provisioning of virtual machines.  相似文献   

Research and implementation of scalable parallel computing based on Map-Reduce     

阮青强  沈文枫  柴亚辉  徐炜民 《上海大学学报(英文版)》2011,15(5):426-429

As a parallel programming model, Map-Reduce is used for distributed computing of massive data. Map-Reduce model encapsulates the details of parallel implementation, fault-tolerant processing, local computing and load balancing, etc., provides a simple but powerful interface. In case of having no clear idea about distributed and parallel programming, this interface can be utilized to save development time. This paper introduces the method of using Hadoop, the open-source Map-Reduce software platform, to combine PCs to carry out scalable parallel computing. Our experiment using 12 PCs to compute N-body problem based on Map-Reduce model shows that we can get a 9.8x speedup ratio. This work indicates that the Map-Reduce can be applied in scalable parallel computing.  相似文献   

基于云教育平台的自主移动学习模型研究   总被引：1，自引：1，他引：0  

李桂英  马力  宁玉文  李贵明 《现代教育技术》2011,21(11):76-79

云教育平台比传统的网络教育平台更适用于移动学习。文章从"云教育"的内涵出发,通过与传统网络教育平台的对比研究,详细分析了云教育平台在移动学习中的优势以及它对移动学:习的改造。最后,基于云教育平台的优势,将移动学习和云平台相结合,构建了一种基于云教育平台的自主移动学习模型。  相似文献   

面向云计算基础课程的Paxos算法教学设计研究     

杨立君  郭林 《教育技术导刊》2019,18(10):191-194

云计算作为一种新型计算模型,自诞生以来受到了业界与学术界广泛关注,市场规模迅速扩大,国内许多大学的计算机专业都开始关注云计算课程教学。针对云计算课程技术内容新、涉及理论多、应用范围广,以及与商业运营模式结合紧密等特点,以谷歌公司的云计算核心技术分布式锁服务Chubby所采用的Paxos算法为例,对云计算教学内容与教学方法进行设计探究。详细阐述了Paxos算法工作原理,并设计了具体教学案例,该教学方案在实际教学实践中获得了良好的教学效果,加深了学生对Paxos算法的理解。  相似文献   

One-to-One Computing and Student Achievement in Ohio High Schools     

Nancy L. Williams  Karen H. Larwin 《Journal of Research on Technology in Education》2016,48(3):143-158

This study explores the impact of one-to-one computing on student achievement in Ohio high schools as measured by performance on the Ohio Graduation Test (OGT). The sample included 24 treatment schools that were individually paired with a similar control school. An interrupted time series methodology was deployed to examine OGT data over a period of 5 to 8 years. Overall student performance and content-specific achievement in math, reading, science, social studies, and writing were not significantly affected by the introduction of 1:1 computing. Treatment schools using a netbook device produced the greatest overall change in scores.  相似文献   

B/S模式程序中的分布式计算应用一例     

周学文 《内江师范学院学报》2004,19(6):25-28

B／S模式的应用程序主要是集中式计算和处理，本简要的以实例无纸化考试系统设计，说明了在B／S模式中采用分布式计算处理的一种思路。  相似文献   

Predicting smartphone brand loyalty: Consumer value and consumer-brand identification perspectives     

《International Journal of Information Management》2016,36(3):245-257

With the growth and competition of the smartphone industry, developing a better understanding of what drives consumers' loyalty to smartphone brands has become an important issue for academics and practitioners. This study hypothesizes four determinants of smartphone brand loyalty based on the perspectives of consumer value and consumer-brand identification. Furthermore, this study also explores the moderating effects of age and gender differences on the determination process of smartphone brand loyalty. Data collected from 157 respondents was tested against the research model using a partial least squares (PLS) approach. The results indicate that functional value, emotional value, social value, and brand identification have a positive influence on smartphone brand loyalty. Of the two moderators, results show that age enhances the emotional value-brand loyalty and social value-brand loyalty linkages but weakens the brand identification-brand loyalty relationship. However, gender does not play a moderating role in the determination of smartphone brand loyalty. The results of this study provide several important theoretical and practical implications for smartphone brand management.  相似文献