基于SuperMap的济南市房屋安全管理云设计与实现          下载免费PDF全文

李春光  李玉兵  胡本勇 《山东国土资源》2015,31(9)

以济南市房屋安全管理云的整体设计与实现为研究内容,充分论述了该项目的建设目标、架构设计、建设内容和创新点,建设过程中广泛的引入了大数据、云计算、三维实景测量等先进技术手段,运用SuperMap系列GIS软件进行开发设计,为房屋安全管理模式的创新提供了有效的技术保障,为智慧房管建设提供了有益的探索和实践。  相似文献   

2.4m望远镜网络安全初步设计     

苏少敏  陈东  罗国权 《天文研究与技术》2010,7(2)

云南天文台将在2.4m望远镜建立远程观测系统。由于远程观测系统通过网络实现通信,必然会面临网络上的各种威胁。为了保证整个网络系统的安全,避免各种不安全因素造成的损失。在对现在望远镜网络分析基础上设计了安全的网络结构,并实现了具有入侵检测功能的防火墙,这些措施初步保障了2.4m望远镜网络系统的安全。  相似文献   

New power relations served here: The growth of food banking in Chicago     

Daniel Novik Warshawsky 《Geoforum》2010,41(5):763-775

While some non-profits have suffered under the political and economic pressures of neoliberal urban governance reform, others have emerged as important institutional players in local governance regimes. This article highlights how non-profits food banks in Chicago have commercialized in order to respond to increased demand, enhance their institutional independence from government, and reassert their local dominance in emergency food service delivery. From a food bank member agency perspective, the consolidation of food bank institutional power has produced new bureaucratic limitations, user fees, and increased competition. These shifts reveal the rise of metropolitan food banks as important players in neoliberal urban governance regimes, as they control the conceptualization of hunger, management of poverty, and organization of food distribution systems.  相似文献   

The Role of Coffee in the Development of Southwest Ethiopia's Forests: Farmers' Strategies,Investor Speculation,and Certification Projects     

Samir El Ouaamari  Hubert Cochet 《社会与自然资源》2014,27(2):200-214

This article examines the role of coffee in the agriculture of southwest Ethiopian highlands, a context characterized by recent huge private coffee estate developments, coffee certification projects and smallholdings. The analysis shows that smallholder farmers prioritize staple crops, and allocate land and labor to coffee only once food production objectives have been reached. It also underscores the diversity of the local peasantry, often treated as a homogeneous group in development projects designed to boost farmers' income through coffee production. Based on this analysis, the article evaluates the effects of recent coffee-oriented development policies: state forest concessions for coffee investment, and two coffee certification projects (UTZ-Certified and Fair-Trade/Organic). Because they omit the differentiated farmers' strategies, these certification initiatives fail to improve local populations' livelihoods and accelerate incipient socioeconomic inequalities. Moreover, when applied to big private plantations, they participate in farmers' dispossession from critical forest resources essential to households' food self-sufficiency.  相似文献   

Use of the Stinkbug,Encosternum delegorguei (Hemiptera,Tessaratomidae), for Food and Income in South Africa     

Cathy M. Dzerefos  Ed T. F. Witkowski  Rob Toms 《社会与自然资源》2014,27(8):882-897

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粮食安全视角下中国历史气候变化影响与响应的过程与机理   总被引：12，自引：2，他引：10  

方修琦  郑景云  葛全胜 《地理科学》2014,(11):1299-1306

基于现代全球变化研究中关于脆弱性和粮食安全的概念,把历史时期的粮食安全分解为粮食生产安全、粮食供给安全、粮食消费安全3个层次,以气候变化直接影响粮食生产水平为起点,分析气候变化-农(牧)业收成-食物的人均供给量-饥民-社会稳定性的驱动-响应链中的关键过程,指出气候变化影响的驱动-响应关系不能归结为简单的因果关系,诸如耕地、人口、政策、外来势力都会对气候变化的影响起着放大或抑制的作用。  相似文献   

基于PCA和LOGIT模型的网络入侵检测方法   总被引：1，自引：0，他引：1  

李蕊 《成都信息工程学院学报》2014,29(3):261-267

针对高维度网络数据进行多类攻击行为检测的需求,提出一种基于PCA和Logit模型的网络入侵检测方法,通过PCA对网络数据降维、简化数据集和多项式Logit模型实现对不同攻击行为的识别并判别其类型。实验结果表明,方法在网络入侵识别上具有较理想的效果。  相似文献   

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陈超贤  陈光  王青平  王紫燕  杨锦玲  许振栋 《大地测量与地球动力学》2014,34(4):17-20

????TEQC????????GPS????????????????????????????????????м????????????????M_P1??M_P2??CSR?????????????????IGS??????????????????飬?ó???1????????????????????????з??????仯,???????????仯?????,??????????????????????????????????????Χ?????????????Χ?????????￡?2?????????????????????????????????????????????????????????????и???????????????3??“????”?????30????????90%????IGS????????????????????????????Χ??????????????  相似文献   

基于 TEQC 的 GPS 观测数据质量分析   总被引：3，自引：0，他引：3  

纪冬华 《全球定位系统》2014,(3):71-73

介绍了TEQC在GPS测量数据预处理中的基本功能,包括：格式转换、数据编辑和质量检核,结合实例对T EQC在GPS数据质量检核中的应用进行了分析,并将其结果可视化,最后,利用TEQC计算了伪距单点定位的结果,并与已公布的ITRF2005值进行了比较。  相似文献   

Water on an urban planet: Urbanization and the reach of urban water infrastructure     

《Global Environmental Change》2014

Urban growth is increasing the demand for freshwater resources, yet surprisingly the water sources of the world's large cities have never been globally assessed, hampering efforts to assess the distribution and causes of urban water stress. We conducted the first global survey of the large cities’ water sources, and show that previous global hydrologic models that ignored urban water infrastructure significantly overestimated urban water stress. Large cities obtain 78 ± 3% of their water from surface sources, some of which are far away: cumulatively, large cities moved 504 billion liters a day (184 km³ yr⁻¹) a distance of 27,000 ± 3800 km, and the upstream contributing area of urban water sources is 41% of the global land surface. Despite this infrastructure, one in four cities, containing $4.8 ± 0.7 trillion in economic activity, remain water stressed due to geographical and financial limitations. The strategic management of these cities’ water sources is therefore important for the future of the global economy.  相似文献