防火墙分布集中管理应用研究     

秦智  揭金良 《成都信息工程学院学报》2005,20(6):670-673

是针对企业网网络安全防护的应用研究，采用防火墙分布集中管理技术解决以往单个边界防火墙或个人防火墙的局限性。分析了防火墙分布集中系统结构，对应用性研究没计作了概括性描述。  相似文献   

UPnP网络中SC的管理方法     

李伟  张凯  孙世新 《成都信息工程学院学报》2006,21(3):350-354

简要介绍了UPnP（Universal Plug and Play）网络协议的体系结构,工作过程;并介绍了UPnP网络安全规约,分析了UPnP网络安全规约可能存在的问题;提出符合UPnP规范同时兼容UPnP安全规约的一套SC（Security Console）管理方案,方案能较好的保证UPnP网络中SC自身的安全和解决SC失效后带来的几个问题;并详细介绍方案的组成部分,工作过程.  相似文献   

STUDY ON INDEX SYSTEM OF ASSESSMENT OF PUBLIC DISASTER PERCEPTION IN THE WESTERN CHINA   总被引：10，自引：0，他引：10  

ZHOUOi LIJing-yi ZHAOJing-bo 《中国地理科学(英文版)》2003,13(3):284-288

The study on humanity response to global environment change is a new direction in the research of global change science, of which an important aspect is to study the adaptation strategies of human being to environ-mental changes in different regions. One reasonable and scientific adaptation strategy is based on not only scientific assessment of the impact of environmental change on society, but also correct estimation of the public perception of environmental change, whereas the research on the latter is terribly weak. This paper intends to understand the per-sonality difference in public perception of environment in the western China primarily by establishing the assessment index system of nation environmental perception and analyzing the results of questionnaire survey in some regions of Shaanxi Province. The conclusions are as follows: 1) The state of public perception of disaster is one of the founda-tions of constituting and enforcing reasonable adaptation strategy to environmental change. 2) The personality differ-ences of public perception of disaster appear as follows: female disaster perception is stronger than male.the order of disaster perception from strong to weak from the point of age characteristics is 20-30, 0-20, 40-50, 30-40, 50-60,60 year old or over in turns; the order of disaster perception from strong to weak from the point of educational char-acteristics is senior high school, college, illiterate, junior high school, primary school, in turns; the order of disaster perception from strong to weak from the point of occupation characteristics is student, farmer, teacher, worker and functionary, in turns; the order of disaster perception from strong to weak from the point of habitat characteristics is city, countryside, towns, and metrooolis in turns.  相似文献   

移动IPv6中返回路由过程的安全问题   总被引：2，自引：0，他引：2  

李铮铮  陈运 《成都信息工程学院学报》2006,21(2):182-185

从移动IPv6工作原理入手，着重对返回路由过程进行了分析。虽然此过程加强了通信节点对移动节点的确认，但是其中仍然存在攻击者冒充测试报文、家乡地址或转交地址的安全威胁，从而达到中断正常通信、窃取信息等目的，所以在此过程中，还要加强对通信节点所处的共享链路保护，以及采取有效的绑定刷新机制，从而实现安全的移动IPv6系统。  相似文献   

浅析ASP技术在共享软件开发中的应用     

张千友  柯弼川 《成都信息工程学院学报》2006,21(6):841-843

软件产品有别于传统意义上的商品，具有虚拟性，其销售方式也独具特色。共享软件便是软件销售中普遍采用的渠道之一。以前的共享软件大多数编译后再通过Internet发布，而利用基于源代码解释执行的脚本语言来开发的共享软件，又如何确保软件使用权的安全进而实现网上在线销售呢？这里拟对利用ASP技术来加强共享软件发布的安全性进行讨论，并提出了解决办法。  相似文献   

基于DEMATEL及SWOT法的广西防雷事业发展战略探索     

周扬天  陈伟中  丁溢锋  阳宏声 《广西气象》2013,(4):85-88,91

为进一步探索广西防雷事业长期发展思路,结合防雷减灾形势和实际环境,利用DEMATEL法、SWOT矩阵分析法系统分析其发展因素,建立SWOT矩阵,判断广西防雷事业以结合外部机会和内部优势的SO战略为主的战略地位,并提出相应发展战略要点.  相似文献   

Post-Kyoto energy strategy of the Russian Federation,outlooks and prerequisites of the Kyoto mechanisms implementation in the country     

《Climate Policy》2013,13(1):125-133

Abstract

Energy sector emissions from Russia have declined by about 33% from 1990 levels. We estimate that some 60–70% of the reduction is due to economic decline, and about 8–12% of it is due to reforms in the energy sector; the remainder being due to the wider use of natural gas and structural changes in the economy. Vigorous institutional and technological measures to promote energy efficiency could lead to savings of over 100 million t.c.e. per year by 2010, and keep CO₂ emissions fairly close to current levels over the decade. In our view, international emissions trading should not lead to global emissions growth, but should facilitate the best energy saving and efficiency. Consequently, we propose that the available assigned amount should be divided into two components. That part arising from ‘type 1’ reductions, produced by special projects and measures relating to GHG reduction taken since 1990, should be freely traded; whereas the remaining ‘type 2’ surplus, without a clear link to real emission reduction activity, should only be traded if the revenues are recycled into special projects resulting in emissions reduction equal to or more than the amount of emissions sold.  相似文献   

京津冀道路气象专家系统的设计与初步应用     

程丛兰  张朝林  郑祚芳  王在文 《气象科技》2013,41(2):365-371

讨论京津冀道路气象专家系统的设计及其在专业气象服务中的实时试用情况.重点对道路气象专家系统的设计框架,技术思路与相关道路气象产品(包括路面积水指数、路面防滑指数、能见度指数、轮胎高温爆胎指数、大风指数等)进行介绍.针对京津冀城市群高速路高危险天气过程的初步应用检验结果表明,此道路专家系统具有较好的实时服务能力,在提高城市交通管理与安全保障的水平,改善市民生活质量,促进社会经济的发展等方面具有良好的社会效益和经济效益.  相似文献   

Risky responsibilities for rural drinking water institutions: The case of unregulated self-supply in Bangladesh     

《Global Environmental Change》2020

The drinking water sector is off track to reach Sustainable Development Goal (SDG) 6.1 with over a quarter of the world’s population lacking safe and reliable services. Policy approaches are shifting away from provision of access towards managing the multiple risks of water supply and quality. By considering how infrastructure, information, and institutional systems evolved in Bangladesh, this article identifies the unintentional consequences of reallocating management responsibility for rural water services away from government agencies towards individuals and households.Between 2012 and 2017, we estimate up to forty-five unregulated tubewells were installed privately for every publicly funded rural waterpoint. This growth rate more than doubled total national waterpoint infrastructure since 2006. The scale of growth is reflected in the declining ratio of households per tubewell from over fifty-seven in 1982 to less than two in 2017, potentially approaching market saturation. This scale of growth aligns to an observed decrease in the real price of private market shallow tubewells by seventy percent between 1982 and 2017. In 2018, we estimate households invested up to USD253 million in tubewells, nearly sixty-five percent of the total national water and sanitation sector’s household-level finance. In effect, household investments became critical to achieve the Millennium Development Goal (MDG) target of improved infrastructure access, but now pose challenges for meeting targets of safely managed services. The scale of continued private investment provides an opportunity for policymakers to explore blended public finance models to meet emerging consumer preferences, while at the same time introducing regulatory and monitoring systems.  相似文献   

Layer-Stripping Full Waveform Inversion with Damped Seismic Reflection Data     

卞爱飞  於文辉 《中国地质大学学报(英文版)》2011,(2)

Full waveform inversion(FWI) directly minimizes errors between synthetic and observed data.For the surface acquisition geometry,reflections generated from deep reflectors are sensitive to overburden structure,so it is reasonable to update the macro velocity model in a top-to-bottom manner.For models dominated by horizontally layered structures,combination of offset/time weighting and constant update depth control(CUDC) is sufficient for layer-stripping FWI.CUDC requires ray tracing to determine reflection t...  相似文献