42 research outputs found

    Application of XML in Parameters Processing of Software for NMR

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    本文针对NMR(核磁共振)系统软件的需求为其参数文件提供了一种XML设计方案,通过对多种XML解析方案的实验和比较,为XML参数文件提供了一种最优的解析和处理方案(VTD-XML),并且论证了VTD-XML在大数据处理方面的优势。According to the commands of parameters processing in software for NMR, the authors provided an approach with XML for the parameters file, and brought forth a best solution(VTD-XML) for XML processing by comparing it with others techniques of XML parsing.Lastly they draws a conclusion that VTD-XML is more appropriate for large XML document than others similar techniques.国家科技支撑计划课题(2006BAK03A22

    XML 技术在NMR 系统软件参数处理中的应用

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    本文针对NMR(核磁共振)系统软件的需求为其参数文件提供了一种XML 设计方案, 通过对多种XML 解析方案的实验和比 较, 为XML 参数文件提供了一种最优的解析和处理方案(VTD- XML) , 并且论证了VTD- XML 在大数据处理方面的优势。国家科技支撑计划课题(2006BAK03A22

    大型XML 文档解析技术的应用与研究

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    随着XML 应用的不断深入, XML 文档快速解析技术的研究成为了当前的热点问题. 在研究XM L 相关解析技术 的基础之上, 讨论大型XML 文档的解析和处理问题, 寻求实际问题的最优解决方案. 首先, 对目前较适合大型XML 文 档解析的两种技术( VTDXML 和SAX) 做了简要的介绍, 对其各自的优劣性进行了比较和分析; 其次, 针对作者正在研 发的 核磁共振谱仪控制软件系统 中参数的XM L 设计和处理问题提出了具体的解决方案, 验证了它们在处理大型文 件时的可行性, 并对它们的实际效果进行了对比分析; 最后, 针对以上两种解决方案的不足之处, 提出了大型XML 数据 文件处理的其他解决方案.国家科技支撑计划( 2006BAK03A22) 资

    南疆地区就业情境模拟与政策优化研究

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    就业问题首先受到人口劳动力和产业发展的直接影响,在生态脆弱地区,产业发展又受到区域资源环境的直接约束。本研究在之前研究成果的基础上,将资源环境约束纳入就业约束条件,通过资源环境约束、人口与劳动力、产业发展与就业相互关系中的直接关系,建立典型生态脆弱地区的区域就业理论模型,因而具有更为普遍的指导意义

    THE ESTABLISHMENT OF AND SOLUTION TO TEACHING MODE IN CLASSROOM FOR SL NET-COURSES

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    随着网络条件和语言教学的发展,利用网络条件构建适合第二语言学习的理想平台和教学模式是当前外语教学界共同面临的一个问题。第二语言网络课,作为一种新的语言教学模式正处于不断发展和应用当中。本文通过大学新视野试点班的实际教学实践及学生学习情况的问卷调查和分析,对网络课堂的界定、构建、理论依据以及不足等问题作一番探讨。With development and help of network and language teaching theories,it is indispensable to utilize their advantages to build an ideal teaching platform and modes for SL acquisition.As a new teaching pattern in classroom,FL net-courses is being developed and applied.This article is dedicated to the definition of the mode,its establishment and theories employed and,by conducting a sampled questionnaire survey,trying to find out solution to its problems in teaching and learning activities of New Horizon College English

    Application and Research on Parsing Techniques of Large XML Document

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    随着XMl应用的不断深入,XMl文档快速解析技术的研究成为了当前的热点问题.在研究XMl相关解析技术的基础之上,讨论大型XMl文档的解析和处理问题,寻求实际问题的最优解决方案.首先,对目前较适合大型XMl文档解析的两种技术(VTd-XMl和SAX)做了简要的介绍,对其各自的优劣性进行了比较和分析;其次,针对作者正在研发的“核磁共振谱仪控制软件系统“中参数的XMl设计和处理问题提出了具体的解决方案,验证了它们在处理大型文件时的可行性,并对它们的实际效果进行了对比分析;最后,针对以上两种解决方案的不足之处,提出了大型XMl数据文件处理的其他解决方案.With the continuous increase of the XML applications,the research of XML quickly parsing techniques have become a hot topic for current research.The paper mainly concerned the parsing and processing of the large XML document.Firstly,it discussed the techniques of XML parsing which fit for large XML document at present,such as,SAX and VTD-XML,it also analyzed and compared their respective advantages and disadvantages.Secondly,it made a solution to the question of XML processing encountered on project of NMR,compared the advantages and disadvantages of the two solutions,then draws a conclusion that both of them fit for the project.Furthermore,according to the faults of the two solutions mentioned previous;it proposed some other techniques fitting for large document.国家科技支撑计划(2006BAK03A22)资

    中国生态系统服务研究的回顾与展望

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    生态系统服务研究是当前国际上科学研究的热点和前沿。近年来我国生态系统服务研究取得了较快进展。为了全面认识与介绍国内生态系统服务研究的状况与成果,促进国际生态系统服务研究的交流与合作,论文首先回顾了我国生态系统服务研究的4个时期,并简要概括了所取得的成就和存在的问题,最后指出,中国生态系统服务的研究应该尽快由当前的概算式研究转向更深层次的研究,尤其要重点关注生态系统功能的基础理论研究、评估指标与方法的标准化、生态服务价值动态评估模型研究、评估结果在决策过程中的应用研究以及生态系统服务的市场化机制研究

    on subscription persistence of pub/sub service in cloud

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    发布/订阅服务让用户提交订阅来表达其所关心的事件,并能在检测到这些事件发生时,及时发送事件通知给感兴趣的用户。依托云平台构建的发布/订阅服务旨在提高其吞吐量和可伸缩性,特别是提高在面对大规模订阅/事件时的事件检测性能。为了保证订阅的可用性,并加快负载均衡的速度,为云上的发布/订阅服务设计、实现了订阅的持久化机制。为了评估订阅持久化机制,进行了一系列对比实验,实验数据表明订阅持久化机制能加快负载转移,从而加快代理达到负载均衡。国家自然科学基金项目(60970027)Publish/subscribe (pub/sub) services permit users to submit subscriptions to declare their interests in specific events and send event notifications to users interested while they detect the occurrences of the corresponding events. A Pub/Sub service which is built over cloud infrastructure aims at improving throughput and scalability, especially the performance of event detection while facing large-scale subscriptions and/or events. In order to ensure the availability of subscriptions and accelerate the speed of load balance, subscription persistence mechanism is designed and implemented in Pub/Sub service in the cloud. Furthermore, a series of comparative experiments are conducted, and the experimental results illustrate that subscription persistence mechanism can speed up the load transfer and further the load balance among brokers
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