高光谱影像数据预处理技术评价

高光谱影像数据预处理是构建高效的影像数据库以及实现地理目标成分信息反演与地理目标识别的基础。本文从反射率演算、光谱微分技术以及高光谱影像数据的降维处理等三个方面对高光谱影像数据预处理进行了研究。实现了基于高光谱影像的反射率反演算法，针对高光谱遥感数据影像分辨率比较低的现状，提出了直方图均衡化、色调平衡、对比度调整等影像处理算法，并给出了实验结果。     

HYPOGLOSSUM FUJIANENSIS SP. NOV. (DELESSERIACEAE,RHODOPHYTA) FROM FUJIAN COAST, CHINA

lNwnDUCnoNTheDelesseriaceangenusHopdeumKtitzingincludesabout25speciesoccurringintropicalandtemPerateseasthroughouttheworld-ThereareanuInberofmorphologicalandtaxonodricstudiesonHopghsuminconteInPOngliteratUre(WOInrsleyandShep-ley,l982;Mikdri,l985;WynnandKraf,l985;WynneandBallantin,1986;Yoshi-daandMibo,l986;Miknd,l987;Wynneetal-,'l989).Uptodate,onlyonespecies,H-attenuatam,hasbeendescrihedfrOInChineseseas(Tsengetal.,1983).DuringataXodricstUdyoftheChineseIhadesum,specimenscollectedb…     

The appraisal of seven economic zones in China

Ｉ．ＴＨＥＮＡＴＵＲＥＯＦＳＥＶＥＮＥＣＯＮＯＭＩＣＺＯＮＥＳＯｎｍａｒｃｈ１７ｔｈ,１９９６,ｔｈｅｆｏｕｒｔｈｍｅｅｔｉｎｇｏｆｔｈｅＥｉｇｈｔｈＮａｔｉｏｎａｌＰｅｏｐｌｅ’ｓＣｏｎｇｒｅｓｐｕｔｆｏｒｗａｒｄａｐｒｏｐｏｓａｌｏｆｃｏｎｓｔｒ...     

Hypoglossum fujianensis sp. nov. (Delesseriaceae, Rhodophyta) from Fujian Coast, China

Hypoglossum fujianensis sp. nov. is an epiphytic alga in the intertidal zone. Plants are light red, 0.9–2 cm high. Margin of branches gives rise to uniseriate hair-like rhizoids, formed outward from the fusion of the second-and third-order cells. Blades are single layered (except the midrib) and uncorticated. Tetrasporangial sori are formed on the middle part of blades. The globular tetrasporangia are developed from lateral pericentral cells. Project 39391800 supported by the NSFC.     

地勘单位转变经济增长方式若干问题的思考

转变地勘单位的经济增长方式,提高各生产要素的使用效率,进而提高经济效益,推动地勘单位的经济持续、健康、全面的发展是当前急需解决的首要问题。本文在分析了地勘单位经济增长方式现状的基础上,指出了优化认识、优化资金配置、优化资本运行机制、优化内部管理、优化经营规模、优化人才成长环境等六个方面是转变地勘单位经济增长方式可选择的主要思路和途径。     

Reach Out and Touch Someone: AT&T's Global Operations in the 1990s

The late twentieth century has witnessed the rapid expansion of a global telecommunications infrastructure and flows of information. Few case studies of individual corporations in this industry exist. Following the breakup of its U.S. monopoly in 1984, AT&T, the world's largest telecommunications provider, steadily expanded its international operations. This paper examines the institutional and spatial dynamics that underpin AT&T's global strategies, including transoceanic fiber cables, employment, manufacturing facilities, joint ventures, and operations in every major market area around the world. It ascertains these efforts in light of the emergence of post-Fordist regime theory and argues that corporate-specific case studies continue to remain an important part of economic geography.     

“THE END OF MODERN HISTORY”?*

ABSTRACT. The first half of the twentieth century marked both an end to confidence in human control of the earth and a prelude to the contemporary era of intense environmental concern after 1950. This conspectus of the environmental history/historical geography of the transitional years between 1900 and 1950 focuses on rising concerns over resource supplies and exploitation, particularly land settlement, timber supplies, soil erosion, and river-basin control. Conservation and the pervasiveness of ecological thinking and analogy form a strong underlying theme.     

地段地理学及其实践意义

地段地理学是以微观尺度的地段研究为对象的现代应用地理学的工程化方向为其基本内涵,通过运用案例对其进一步分析说明,充分表明了地段地理学的实践意义。     

农区小城市发展与规划的思考

针对我国农村地区小城市规模小,潜力大,起步晚,速度快,困难多,标准氏等特点,提出了市场经济体制下规划必须更加科学化,坚持城乡一体化和投资多元化的方向,阐明了农村地区小城市建设与规划必须坚持改革,发展和严格管理的原则。     

三峡库区农业生态经济系统的预警分析

从系统与环境相统一的角度,研究了农业生态经济系统的模型、特征、预警分析的意义和内容;以三峡库区为例,从系统序化的观点,确定了这个系统的社会、经济、环境功能和状态的主要指标的警戒线;并与这些指标的现状、过去与未来趋势值进行对比;分别对现状预警、趋势预警和突变预警进行了评价;最后作了简易的对策探讨．