VPN技术在浙江省气象网络中的应用

随着浙江省气象业务的不断发展，网络数据交换日益增多，同时更多基于网络的气象业务的增加，如网络视频会商、自动站数据传输等，使目前浙江省气象系统专线网络运行已达到极限，所以需要建立VPN网以对现有的网络作链路上的备份，而VPN的建立同时还可以实现移动办公，领导能在远程调用内网的资料进行远程决策服务和汇报工作。主要介绍VPN技术并叙述VPN技术在浙江省气象系统网络中的具体应用。     

西部大开发与中国经济发展

在对中国西部的区域划分进行界定并阐述中国西部区域特征的基础上,对中国西部的开发进行了历史回顾,并对中国西部开发的历史背景和现实基础、中国西部开发的优势和制约条件进行分析,最后提出了中国西部开发的发展战略和政策措施.     

厦门海洋生物入侵的危害及管理对策

本文系统地分析了厦门海洋生物入侵的成因、现状、危害及治理方法,认为互花米草和海洋动物沙筛贝是主要的入侵物种,其严重的生态、经济和社会危害不可低估.同时明确防止海洋生物入侵的总体目标,进而提出强化管理的系列对策.     

Estimated intensity needed for sampling flatfish assemblages in reference areas of tidal mud flats systems may be disproportionately costly and deleterious

Beam trawl surveys were carried out in a tidal stream system of the German Wadden Sea on two to three successive days of comparable weather conditions in three summers. The variability in time and space detected for plaice (Pleuronectes platessa), flounder (Platichthys flesus), dab (Limanda limanda), sole (Solea solea) and lemon sole (Microstomus kitt) was considerable even for species with a very high abundance. Other flatfish species such as turbot (Scophthalmus maximus) and brill (Scophthalmus rhombus) occurred only occasionally in the catches. Sampling effort calculated to detect a 50 or 20% difference between the surveys caused by immigration, emigration or mortality appears to be disproportionate. It is argued that such a major sampling effort of reference areas in tidal mud flat systems is likely to influence the results, to harm the environment, and to be very expensive.     

把海洋开发作为跨世纪的国家战略

２１世纪将是全面开发利用海洋的时代，许多沿海国家将把海洋开发作为国家战略。我国是世界上人口最多的国家，陆地资源人均占有量少，更应该重视开发海洋，建设临海工业带，发展海洋农牧化，开发建设海运网络等。发展海洋经济必须走科技兴海之路，抓科技储备，改造传统产业，发展新兴产业，不断提高海洋开发生产力水平。     

Characterization of Estuarine Marine Clays for Coastal Reclamation in Pusan, Korea

Large scale reclamation works in coastal areas of the Nakdong River plain are at various stages of progress, since early 1990's on in-situ soft marine clay deposits. These deposits are of the order of 30 to 40 m thick. A realistic rapid characterization of soft ground would ensure success of any reclamation work in this area. In order to cope with the work carried out with different agencies, it is desirable to evolve a systematic methodology. In this study, engineering properties of clays at three coastal areas, Gadukdo, Noksan and Shinho, have been generated. The analysis of data has been done within the framework of classical developments in soil mechanics. Analysis has also been made by making use of the recent developments in dealing with soft clays. The dominant factors, namely, stress, time, and environment influencing the response of clay to loading are identified.     

青藏高原边缘地区晚更新世人类遗存与生存模式

自20世纪80年代在青海小柴旦发现旧石器遗存以来,青藏高原边缘地区已经发现了10余处旧石器时代遗址,年代属晚更新世晚期。这些遗存显示,古人类在距今30ka左右开始尝试向这些高海拔地区扩散,但直至距今15ka以后才有更多的人群迁徙至此。通过对这些遗存分布位置、古环境特征、年代测定和石器技术、组合分析,得以管窥古人类对该地区的开发利用过程,并进而阐释史前人类技术发展、生存模式演变和古环境的耦合关系。