共查询到20条相似文献,搜索用时 15 毫秒
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LISA NAUGHTON-TREVES 《Geographical review》1997,87(1):27-46
ABSTRACT. Subsistence farmers near Kibale National Park, Uganda, fear and resent many wildlife species. In this article I compare records of crop damage by wildlife and livestock with local complaints about the worst animals and the most vulnerable crops. I discuss the concordance and discrepancies in complaints versus actual damage in light of physical parameters of risk and of social factors that shape perceptions and vulnerabilities. Crop losses were greatest at the edge of the forest, where immigrants are disproportionately represented. State proprietorship of wildlife amplifies local vulnerability and constrains traditional coping strategies, such as hunting. 相似文献
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THOMAS PERMUTT Department of Epidemiology Preventive Medicine University of Marylan W.Baltimore St Baltimore MD U.S.A.STEVEN D.EDLAND Biostatistics Department University of Washington Seattle WA U.S.A.MITHRA MOEZZI Department of Statistics University of Californi Berkeley CA U.S.A.STELLA C.GROSSER Division of Biostatistics University of Californi Los Angeles CA U.S.A. 《地理学报(英文版)》1991,(3)
Techniques for testing for and estimating relative bias between two laboratories are developed andapplied to a survey of the chemistry of streams in the United States.The design of the quality assuranceprogram allows estimation of linear corrections for bias as well as testing of the hypothesis of linearity,Designs of this type are useful,but improvements are suggested. 相似文献
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以构建高效信息传输网络为代表的全球信息化浪潮正在蓬勃兴起。这是现代科学技术发展对人类社会的一次革命性变革。在即将来临的信息社会中,信息资源将成为人类生产资料的第一要素。从世界范围看,信息产业从传统的第三产业中分离出来,成为一种独立的新兴产业的趋势已日益明显。信息产业可以成为中国跨世纪发展的支柱产业和具有持久效能的新经济增长点。加快发展信息产业,也是中国根据自身的国情,建立资源节约型的国民经济体系,实现“两个转变”和社会经济可持续发展目标的必然选择。 相似文献
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本研究是首次对中国南极考察队越冬预选队员进行心理选拔方法的探讨。以第十三、十四次中国南极考察队54名越冬预选队员为对象,在冬训期间,对选拔方法的设计、实施、分析及改进作了探索,应用了艾森克人格问卷(EPQ)、行为类型问卷(BPQ)、卡特尔十六种人格因素问卷(16PF)、自编自陈问卷、应激水平实验和直接行为观察等可供参考的选拔方案,并作了效度检验,为我国南极考察队员的选拔工作取得了初步经验,选拔方案尚待进一步完善。 相似文献
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Recent research for the Swedish Road Weather Information System (WIS) is discussed along with a method for determining temperature variations attributable to topography during different weather situations. Topographical areas are classified according to factors determining temperature differences. The investigation concentrates on areas where great temperature differences occur during different weather situations, producing a risk of local road slipperiness. Geographical factors analyzed and discussed include valleys, height differences, shadow areas, bridges, and regional climate. Cold air pool intensities are shown to be influenced by weather but a variation between different valleys also occurs owing to valley width, area of cold air production, wind shelter, and ratio between height and width of valley slopes. During neutral or unstable lapse rate conditions, the lowest road surface temperature is closely related to the air temperature and decreases with increasing altitude above sea level. Screened areas have a lower surface temperature than areas exposed to sun. Factors such as bridge size and type also affect road surface temperature on bridges. These different factors are integrated into a local climatological model. [Key words: topoclimatology, local climatology, modelling, road slipperiness, road surface temperature.] 相似文献
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国家经济地图集计算机制图系统的技术特征 总被引:1,自引:0,他引:1
中国国家经济地图集的编辑工作采用了计算机制图技术,其先进性体现在具有地图设计、编辑和制版等多种功能的一体化制图系统中。这个系统选用了合理的软、硬件支撑环境,并自力更生地完成了制图数据库、地图色彩库的设计和建立,以及智能化统计制图软件、地图色彩自动设计软件、电子地图软件等的开发和应用。本文将主要介绍这些实验研究成果。 相似文献
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ELIZABETH LUNSTRUM 《Geographical review》2008,98(3):339-355
ABSTRACT. Central to its transformation from a state‐centered to a neoliberal, free‐market economy, in 1997 the Mozambican state passed a radical new land law that guarantees the rights of individuals and communities to occupy land and transfer land‐use titles, a move seen as necessary for attracting private investment. By comparing how the land law has been applied to the Limpopo National Park and several adjacent villages, I show how it has led to geographically uneven land reform. More specifically, outside the park, the law has enabled the semiprivatization of community lands, in theory protecting community land rights. However, the application of the law within the park has resulted in the further nationalization of this space, which is leading to land dispossession for communities within the park's borders. I thus show how neoliberal land reform is giving rise to a seemingly contradictory type of “neoliberal state space.” 相似文献
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面向对象的电子地图创作模型—国家经济地图集(电子版)软件设计研究 总被引:10,自引:1,他引:10
本文系统地描述了电子地图创作系统MapMagic的设计思想和实现技术。文章根据电子地图的新特点,运用面向对象的方法技术提出了电子地图的概念模型,并给出了其计算机形式化表示-电子地图模型。在此基础上,研究地图创作的任务,建立起面向对象的电子地图创作模型,并详细讨论了该创作模型的体系结构、组成要素及其实现机制。按照上述思想设计的MapMagic软件系统应用到《中华人民共和国国家经济地图集》(电子版)开 相似文献
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《The Professional geographer》2013,65(4):377-381
This paper tests the validity of general central place concepts in a two-province, government-organized planning region in western Argentina known as Cuyo. Results of trade area surveys for various hierarchical levels and patterns formed by shopping-trip behavior agree well with expectations based on similar central place research in the United States. 相似文献
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Victor L. Mote 《The Professional geographer》1987,39(1):13-23
The assimilation of Siberia's northeast frontier has been a subliminal goal of Soviet planners since the 1930s, but economic problems, including inaccessibility, have thwarted their aim at almost every turn. The completion of the Baykal-Amur Mainline (BAM) and the renewed planning and construction of the Amur-Yakutsk Mainline (AYAM) at first promised to inspire new regional development efforts. The new policies of the Gorbachev administration appear to have altered the course, at least temporarily. This article analyzes these developments and relationships. 相似文献