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在当今的信息时代里,信息高速公路给人们带来了极大的方便,受到人们的高度赞赏,国内众多的单位也纷纷建立起自己的网络数据库,然而数据库资源有可能受到威胁或破坏,因此数据库安全和数据安全机制是开发设计必须考虑的重要问题之一,数据库安全可以通过一些安全机制来达到,由计算机系统及其软件外部的机制和集成数据库管理系统与软件内部的机制两部分组成,Oracle数据库管理系统在数据库安全方面为数据库管理员和应用开发 相似文献
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随着新疆油田信息化的高速增长,为了解决数据可视化以及数据异地存储的生产要求,华隆自动化测试公司在不改变现场设备的基础上提出了实时可靠的油田数字化大屏幕数据中心解决方案。本方案结合公司长期现场自动化解决方案,对于不同的数据采用不同的远传方式,将接收到的数据在数据中心存储、集中处理、显示,同时B/S构架解决了异地浏览数据的需求。 相似文献
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数据资源作为油田生产中日益重要的无形资产,它的安全也被日益重视。提出作为油田主要生产单位的采油厂必须首先提高数据安全意识,认识到备份成为保障信息技术投资的必然之选,建立一个完善的适合采油厂的安全备份中心。通过物理软件及其管理运行机制达到保证数据安全的目的。 相似文献
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数据中心是数字化油田建设的主要管理和执行机构,负责油田数据加工、管理, 提供服务,它是油田信息化建设发展到高级阶段的产物。本文从技术和管理两方面论述了建设油田数据中心的必要性,并指出了油田数据中心的建设方向。 相似文献
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阐述了在企业信息化程度日益提高,灾难事件发生会造成数据丢失和业务中断使损失逐步增加的情况下,建设数据中心灾备系统的重要意义。重点介绍了建设数据中心灾备系统的灾备策略及技术方案的确定两部分,可为数据中心灾备的具体实施提供参考。 相似文献
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油田企业信息化网络安全策略 总被引:1,自引:0,他引:1
针对油田企业信息化网络特点,提出相应的安全策略。这就是,建设高可用性网络,主要策略包括信息化硬件和软件以及灾难恢复;部署高安全性防护系统,主要策略包括防病毒系统、防火墙、入侵检测、认证加密、操作系统安全使用和采用VPN(虚拟专用网)等;建立安全保障体系,主要策略是通过安全管理,保证物理安全、网络安全和信息安全措施的实现。 相似文献
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为了建立油田信息安全体系,有必要对油田网络进行安全风险评估,以便采取有针对性的策略措施。油田网络安全风险评估的内容主要包括:网络资产评估、网络漏洞评估、安全风险分析、网络安全技术应用现状分析。油田网络安全策略和解决方案主要包括:物理层安全建议,网络层安全建议,系统层安全建议,应用层安全建议,制定安全管理制度,加强信息保密。 相似文献
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勘探开发数据管理中心建设设想 总被引:3,自引:0,他引:3
在分析了石油数据管理发展趋势的基础上,提出了建立勘探开发数据管理中心的建设设想,即通过建立勘探开发数据主库,实施数据集成,通过建立项目库,实施应用集成,达到改善油田勘探开发综合研究信息环境的目的。 相似文献
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从提高数据质量出发,分类探讨了影响地震数据采集精度的几个因素,并指出其主要因素是检波器和电缆;尽量削弱这些因素的影响,是获得好的地震资料的基础。 相似文献
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针对目前流程工业报警系统中普遍存在的报警系统效率低、连锁报警多的现象,提出一种基于过程数据的关联报警分组和抑制策略。该策略采用离差平方和法对过程数据进行聚类分析,根据距离系数把关联的报警变量分组;并利用报警优先级量化规则,从响应时间和后果严重度两方面计算报警的优先级分值,以此确定报警小组中需要及时响应和抑制的报警。该策略有助于控制员理解报警间的关联关系、提高对连锁报警的响应效率。最后在TE模型中运行测试,验证了该策略的有效性和实用性。 相似文献
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文章主要论述美国新一代综合录井仪Drillbyte的数据网络系统结构特点,以及现场网络操作系统管理方面的有关技术要求。特别阐述Drillbyte在数据网络技术安全方面的特色,为我国综合录井仪器设备的研制和同行现场使用提供一些参考。 相似文献
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《Food Control》2006,17(10):825-837
The purpose of this ICMSF position paper is to describe epidemiologic data that are useful for evaluating the public health impact of food safety control programs, and to identify how epidemiologic data can be used in the evaluative process. The paper describes how epidemiologic data can be focused on food safety and public health targets by measuring process indicators, physical and/or microbiological outcome indicators and public health outcome indicators. ICMSF believes that integration and application of epidemiologic data from appropriate data systems for the evaluation of food safety strategies will justify and/or lead to proper modification of food safety programs and support efforts to determine equivalency in health protection between alternative food safety strategies. 相似文献
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现代测井数据采集系统主流技术浅析 总被引:4,自引:0,他引:4
文章对现代测井数据采集系统进行了简要介绍,对所使用的主流技术:网络技术、嵌入式系统开发技术、大容量可编程逻辑阵列器件的开发技术、现代软件开发技术以及开放式UL—2000通用测井平台进行了简析,对测井数据采集系统的研发具有一定的借鉴意义。 相似文献
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《Food Control》2018
Reporting of information is crucial to enable backward and forward tracing of food along the chain, which is of main importance in case of non-compliance with legal obligations on food safety. Thus, food business operators in the European Union (EU) must enable tracing of any foodstuff one step forward and one step back. However, flux of information relevant for traceability and food safety can be a challenge in the supply chains of dried culinary herbs and spices.Results of a survey among herb/spice businesses – either located within the EU or exporting dried herbs/spices to the EU – showed the widespread use of electronic systems for recording and processing of traceability/food safety data. However, automated capture of transaction data and automated read-out/processing of reported data were rare. The survey indicates that besides electronic documents, typed paper documents are often exchanged between businesses. For data delivery along the chain, paper documents filled in by hand are still used – even in the EU or upon import to the EU. The document type as well as the forms varied, particularly in case of incoming herbs/spices. The forms used for reporting by the survey participants or by their suppliers covered mostly individual/company-specific forms. Standardised forms provided by herb/spice associations were rarely shared between these businesses. The extent of reporting of traceability data upon import to the EU and within the EU appears to be sufficient. Some additional traceability data that promote product tracing, such as the country of harvest, were frequently reported. Same was true for information on food safety hazards. 相似文献
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Application of ozone sprays as a strategy to improve the microbial safety and quality of salmon fillets 总被引:4,自引:0,他引:4
Ozone research investigating the efficacy of spray application mechanisms for balancing microbial safety with chemical quality attributes of high lipid content fish is lacking. The objectives of this study were to investigate the influence of aqueous spray treatments of 1 mg/L and 1.5 mg/L ozone on the microbial and chemical quality indices of Atlantic salmon fillets inoculated with Listeria innocua as a surrogate species replacing the pathogen Listeria monocytogenes. In order to simulate industry processing parameters, number of passes under spray nozzles (1, 2, and 3) was also investigated.Listeria counts resulting from treatment with three passes of 1 mg/L ozone sprays were significantly lower (p ≤ 0.05) than non-ozonated controls on days 0, 3, 6, and 10 of refrigerated storage at 4 °C. At both ozone concentrations, Listeria counts were significantly influenced (p ≤ 0.05) by the number of passes under spray nozzles with increasing passes resulting in increasing reductions. The residual antimicrobial effectiveness of ozone at both concentrations against aerobic bacterial populations on treated samples was limited to <6 days storage at 4 °C. Lipid oxidation analyses indicate that ozone concentration did not significantly affect (p ≤ 0.05) TBARS but did influence headspace propanal with 1 mg/L ozone treatments yielding approximately 30% higher propanal values than spray treatments of 1.5 mg/L ozone. Both TBARS and propanal levels were significantly influenced (p ≤ 0.05) by storage time, yet the number of spray passes did not significantly affect either measure of lipid oxidation. Our results indicate that ozone sprays at concentrations up to 1.5 mg/L are effective in reducing initial counts of aerobic bacterial populations and in significantly reducing (p ≤ 0.05) counts of L. innocua without causing significant increases in lipid oxidation levels in farmed Atlantic salmon fillets during refrigerated storage at 4 °C. 相似文献