首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   6篇
  免费   0篇
  国内免费   1篇
大气科学   1篇
地质学   1篇
海洋学   1篇
综合类   1篇
自然地理   3篇
  2019年   1篇
  2014年   1篇
  2012年   1篇
  2008年   2篇
  2007年   2篇
排序方式: 共有7条查询结果,搜索用时 328 毫秒
1
1.
摘要:后工业时代,文化资源的挖掘利用正日益成为各国政府引导城市更新、城市转型的重要手段。上海也积极利用各种文化资源来塑造国际文化大都市的形象。论文在回顾上海文化战略发展的基础上,分析了文化战略导向下上海对演出场馆资源的五种开发利用模式,并重点剖析了城市文化战略的实施对上海演出空间的塑造作用。在当前上海打造国际文化大都市的进程中,演出场馆的空间分布格局正日趋成形,同时,这种文化符号效力也带来了显著的空间效应,包括全球文化消费引领地的形成,艺术表演集聚区的初现以及演出空间的专业化拓展等。塑造与提升上海演艺文化空间格局成为上海加快建设国际文化大都市的必经之路。  相似文献   
2.
Gambling using electronic gaming machines (EGMs) has emerged as a significant public health issue. While social impact assessments are required prior to the granting of new gaming machine licenses in Australia, there are a few established techniques for estimating the spatial distribution of a venue’s clientele. To this end, we calibrated a Huff model of gambling venue catchments based on a geocoded postal survey (n = 7040). We investigated the impact of different venue attractiveness measures, distance measures, distance decay functions, levels of spatial aggregation and venue types on model fit and results. We then compared model estimates for different behavioural subgroups. Our calibrated spatial model is a significant improvement on previously published models, increasing R2 from 0.23 to 0.64. Venue catchments differ radically in size and intensity. As different population subgroups are attracted to different venues, there is no single best index of venue attractiveness applicable to all subpopulations. The calibrated Huff model represents a useful regulatory tool for predicting the extent and composition of gambling venue catchments. It may assist in decision-making with regard to new license applications and evaluating the impact of health interventions such as mandated reductions in EGM numbers. Our calibrated parameters may be used to improve model accuracy in other jurisdictions.  相似文献   
3.
北京奥运演练精细化预报方法及其检验评估   总被引:5,自引:1,他引:5  
郭虎  王建捷  杨波  时少英  魏东  孙继松  李靖 《气象》2008,34(6):17-25
2007年北京奥运演练期间精细化场馆客观预报方法,即支持向量机方法(SVM)和半周期函数拟合(HPFF)预报方法,为场馆精细化预报产品的制作提供了有力的技术支撑.利用2007年8月1-26日国家体育场、顺义水上中心等5个奥运场馆的5种地面气象要素(气温、相对湿度、风向、风速、和3小时累积降水量)观测资料,对SVM和HPFF客观预报方法以及预报员在客观方法基础上制作的3天逐3小时预报进行了检验评估.结果表明:(1)两种客观方法相比较,HPFF方法对于预报连续变化的气象要素(如气温、相对湿度和风速)的精细预报比SVM方法预报技巧高;而对不连续变化的变量(如:风向)的预报技巧低于SVM方法.(2)预报员制作精细要素预报在很大程度上依靠客观方法.预报员对于气温、相对湿度和风速的预报技巧略高于客观方法,对于降水和风向的预报技巧与客观方法相当.尽管预报员对客观方法的修正能力比较有限,但具有对两种客观方法结果做出择优选择的综合判别能力;(3)预报员0~63小时气温预报平均绝对误差约为1.8℃,气温预报误差≤1℃的准确率在43%左右,预报误差随预报时效变化不大;0~24小时相对湿度预报平均绝对误差约为10%,相对湿度预报误差≤10%的准确率是60%,误差随预报时效而有所增大;0~63小时风向预报准确率约20%,预报准确率随预报时效变化不大;0~63小时风速预报平均绝对误差在0.8~1.4m·s-1之间.  相似文献   
4.
奥运场馆不同于一般的民用建筑,为将2008年奥运会办成一届令人难忘、和谐共处的盛会,北京提出了"绿色奥运、科技奥运、人文奥运"的理念,奥运场馆智能化系统作为"科技奥运"中的重点任务,成为满足赛事要求的必要条件和提高经营管理水平的先进手段。  相似文献   
5.
北京2008奥运赛场环境特征的GIS系统分析   总被引:1,自引:0,他引:1  
本文针对不同环境特征参数的空间和时间变化特征,利用2006年不同空间分辨率和时间分辨率的多源遥感数据和产品,对31个奥运场馆、公路自行车赛场和奥林匹克公园的建筑指数、水体指数、白天/夜间陆表温度以及植被指数特征进行了GIS系统分析,其结果:(1)31个奥运场馆的建筑时间、地理位置以及露天情况对其环境特征有着重要的影响,建筑指数、水体指数、白天/夜间的陆表温度以及植被指数均表现出不同的变化特征,故奥运场馆的绿化和赛事安排应对这些因素进行综合考虑。(2)公路自行车赛场和奥林匹克公园均表现出建筑指数较高,水体指数为负值的特征,而且夏季和秋季白天/夜间陆表温度较高。建议在奥林匹克公园适当增加一些水体以提高其环境质量。  相似文献   
6.
The liberalisation of gambling in Australia has resulted in the dispersal of 200 000 electronic gaming machines (EGMs) across the country, generating substantial revenues for State governments and the gambling industry as well as causing significant gambling-related harm. While the spatial distribution of EGM venues has been shown to follow a gradient of community disadvantage, little is known about the distinctions between the venues themselves (i.e. pubs, clubs, and casinos), either in terms of the catchments they service or the harm they produce. To this end, we constructed a sexpartite typology of EGM venues in the Northern Territory of Australia derived from venue location and licensing variables. We also conducted a geocoded mail survey (n=7041) of households in three urban centres to describe the composition of markets and problem-gambling outcomes across the six venue categories in the typology. Venues in accessible locations and those with a higher numbers of EGMs, particularly casinos and clubs located near supermarkets, were most closely associated with gambling-related harm, even when differing player socio-demographics were accounted for. We argue that gambling risk is a function of the interaction of geographic accessibility to markets on the one hand and venue effects on the other. An understanding of the geography of EGM gambling may help improve supply-side approaches to regulation, as well as shed insights into contemporary urban processes within Australia's regional settlements.  相似文献   
7.
2008奥运会帆船基地平面物理模型试验研究   总被引:1,自引:0,他引:1  
2008北京奥运会青岛帆船比赛基地的平面布置对港内泊稳条件、比赛效果、场地外观等提出较高要求。文中总结帆船比赛基地平面布置的水工物理模型试验成果,分析赛船区的泊稳条件,讨论布局合理性,并提出改进措施。  相似文献   
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号