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针对云存储中的数据私密性保护问题,提出了基于SSL安全连接和封闭计算环境加密的云存储方案——CB CSS。其思想是首先云租户在客户端向云端提出加密请求,然后云端为其申请专门的封闭计算环境,在此环境中用户使用自己的对称密钥对数据加密,最后将数据密文存入云的分布式文件系统。相对于客户端加密的云存储方案,CB CSS方案降低了客户端负担;相对于云端加密的云存储方案,CB CSS方案不仅可以为用户数据从客户端到云端以及云内传输和存储提供一条完备的私密性通道,从而有效防范数据泄漏问题,而且减轻了块数据服务器负担。实验结果表明,对于用户数据的私密性而言,引入SSL安全传输、封闭计算环境加密造成的性能损失是可以接受的。 相似文献
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云存储为数字教育资源带来海量存储的同时也带来数据安全性问题,针对现有的教育资源云存储平台在数据保密性方面的不足,在数据保密性方面对现有的数字教育资源云存储平台给出改进的方案,主要改进文件加密/解密、数据库加密/解密、密钥管理和客户端4个模块,引用加密算法设计,保证加密效率和加密数据的安全性。 相似文献
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为适应迅猛发展的Web技术以及日益广泛的Web应用需求,HTML5应运而生。在介绍HTML5技术的新特性的基础上,文章重点针对网络异常时Web应用的数据处理并提出了处理办法。通过离线资源缓存、在线检测、本地数据存储等三个环节,对离线状态下的数据进行处理。特别是对以前客户端保存数据的技术进行了比较,为了弥补它们存在的缺点,提出了利用HTML5的Web Storage API轻松实现客户端数据存储开发的方法。 相似文献
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RAID技术在FTP服务器上的应用 总被引:1,自引:0,他引:1
FTP服务作为局域网资源的主要提供载体之一,对于资源共享和数据存储发挥重要的作用。FTP服务器对于存储器的要求较高,数据吞吐量、并发访问和并行操作都是影响FTP服务器性能的重要因素和瓶颈。RAID的使用改变了传统服务器存储的方式,以一种创新的存储思想对存储器进行了重组,提高了存储器的性能.因此FTP服务器可以更快的响应和传输客户端的请求。 相似文献
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军事装备的技术资料大多数仍采用传统纸制介质存储,传统纸制介质存在信息存储困难、维护效率低下等问题。在分析GJB6600标准下交互式电子技术手册(IETM)关于设计问题的基础上,设计并实现了一种基于GJB6600标准的IETM创作平台和浏览IETM的客户端。开发的创作平台和客户端平台具有智能诊断、语音识别及导航索引功能,数据通过数据库以及XML文件存储,最终生成的IETM以HTML文件形式组织,达到了IETM五级标准。 相似文献
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为了监测海绵城市项目中的水雨情状况,实现循环用水、节约用水,设计一种通过NB-IoT技术进行通信的海绵城市水雨情监测和自动灌溉系统。利用项目现场传感器对雨量、土壤温湿度、蓄水池水位等数据进行监测,根据监测到的土壤湿度变化,利用蓄水池收集对城市绿化进行自动灌溉;经嵌入式网关分析处理后,数据通过NB-IoT网络实时发送给移动客户端进行展示,也可以定时把数据上传至数据库服务器存储,方便管理人员通过移动客户端对历史数据进行查询。实验表明,系统运行稳定、功耗低、数据准确,达到了设计要求。 相似文献
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介绍了基于WEB的实验室网上办公管理系统,该WEB应用系统在网络服务器端执行ASPScript、客户端执行VBScript,并采用MicrosoftSQLServer数据库存储事务数据,实现跨校区的各实验室同在校园网上办公管理的功能。 相似文献
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《十堰职业技术学院学报》2017,(1):110-112
在数据库项目开发过程中,如何避免应用程序在客户端频繁地执行数据访问操作,提高程序的运行效率,是软件工程师需要考虑的重要问题。本文分析并阐述了SQL Server数据库系统中存储过程的执行过程及优势,并通过案例介绍了SQL Server存储过程在开发过程中的具体应用。 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
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Rajesh Kanoi 《海外英语》2007,(1):52
Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer. 相似文献