基于开放互操作标准的分布式地理空间模型共享研究

传统的单机环境和封闭式网络环境由于有限的资源利用能力, 难以充分支持分散地学数据、模型等资源的共享与应用集成。基于网络环境的信息交换特点, 提出了分布式地理空间模型共享的服务体系。该体系以数据、模型、元数据等互操作要素为核心, 通过网络将数据、模型等网络节点进行开放式耦合。针对地理空间模型服务的互操作问题, 提出了分布式环境下的模型共享服务交互接口, 该接口定义了模型服务元数据、模型服务的交互操作、模型服务的通讯方式等交互规则, 尽可能地降低模型服务与模型终端之间在数据交换、功能调用等方面的互操作困难。为了降低将模型共享为模型服务的实现难度, 设计和开发了地理空间模型共享平台, 并介绍了在该平台上发布地理空间模型的2种方法。最后介绍了研究成果在Prairie生态模型共享方面的应用实践。     

开敞水域中航槽流场的数值模拟

建立了一个模拟开敞水域中航槽流场的平面二维数学模型.利用该模型计算得到的流速分布与袁美琦、李安中等人试验值相吻合,并计算了相当于天然情况下(各种水深、挖深比及航槽与水流的不同交角)的流场,得到了各种航槽与水流交角、不同挖深比的航槽流速折减系数变化规律图,及各种航槽与水流交角、不同挖深比的航槽中流向与航槽轴线交角的变化规律图,为开敞水域中航槽选线设计提供了依据.     

中国对外开放口岸布局研究

本文共分五个部分。１、口岸分类及功能：按口岸的重要性及管理层次分类；按口岸性质及运输方式分类；按口岸所处地带及对外职能分类。２、口岸的基本结构：包括对外运输系统、对外贸易系统、监督检查系统、服务系统和综合管理系统。３、口岸布局与区域开发。４、中国口岸布局四大地域系统：沿海沿江沿边口岸开放地域系统和内陆（沿路）口岸开放地域系统。５、关于改善开放口岸体系的建议：口岸设置要为外向型经济服务，结合国际大通道建设开辟新口岸，大力发展航空网设置新航空港口岸，沿江内陆区口岸类型要多样化，完善现有开放口岸系统。     

A generalized probabilistic approach for slope analysis: practical application to an open pit iron ore mine

Summary An example of the generalized probabilistic approach to slope analysis is given through a case study on an iron ore mine. A step by step engineering procedure is described, so that a practical application can be made to other structures under different field conditions.     

Economic and design considerations for explosive overburden casting

Summary An overview of economics and design consideration for explosive overburden casting is given and the criteria for the successful application of this technique are discussed. These criteria are: blast design, economic considerations and environmental considerations. Explosive overburden casting may effect considerable cost savings if the market for increased production is available. However, if a fixed sales constraint exists the economic benefits of explosive overburden casting may be marginal and an extensive economic analysis is warranted.     

开放式地理信息系统(OpenGIS)与互操作技术分析

地理信息系统技术在取得巨大发展的同时，其孤立性、封闭性的缺陷越来越不适合现代信息社会的要求，开放式地理信息系统（OpenGIS）规范和互操作技术的提出，不仅为数据共享提供了崭新的思路，而且将GIS带入了开放的时代，从而使得各个系统间实现不同类型地理数据和地理处理方法的透明访问成为可能。本文主要就OpenGIS规范和互操作技术作了一些探讨，最后结合我国的实际情况，分析了OpenGIS在我国的应用现状与未来展望。     

Malaria and related environmental issues in India: a case study of Aligarh city

Malaria is one of the most widespread diseases in the world. Endemic malaria no longer occurs in many temperate zones as a result of social and economic improvement. At present malaria is the Third World's most dreaded killer. It kills over 1 million people and causes 300–500 million episodes of illness. In India, malaria-reported deaths have shown an upward trend. In 1955, a drive to eradicate malaria was launched in India. But after initial success it failed and malaria made a comeback. Malarial mosquitoes generally prefer unpolluted natural breeding sites but now they have adapted to the changed urban environment. In this paper, an attempt has been made to examine the occurrence of malaria and related environmental issues in a small town of India. Aligarh city, lying in the shadow of the country's capital New Delhi, was selected as a case study. Data were collected mainly from household surveys with the help of questionnaire interviews. About 2,185 households belonging to different income groups were sampled. The differences in the occurrence of malaria in the different income households (in 87% low, 69% lower-middle, 65% middle, 14% upper-middle, and 5% upper) suggest that most of these differences are related to the environmental conditions existing inside and outside their homes, such as poor drainage system, poor sullage disposal, open blocked drains, waterlogging and indoor water storage in open containers. Commitment both by the Government and local residents is needed to improve the environmental conditions and eradicate malaria.     

抚顺西露天矿北帮变形有限元分析

本文应用有限单元法对抚顺西露天矿北帮边坡及地表变形进行分析.确定了在地下开采当时、露天开采当时及不同充填类型地下采场当构造地应力降低时边坡及地表的变形特征.给出了不同情况下的位移场、应力场及塑性区的分布.并对不同情况下的变形、应力分布及塑性区特征进行了对比研究.     

皖南东至金矿化域中载金硫化物的非平衡性研究

绝大多数的金矿化作用都是在非平衡的开放体系中完成的,再加上硫化物在结晶过程中生长速度过快,因此难免产生一些异常特征:晶格金在硫化物中大量出现、含金硫化物单晶中主元素含量变化很大以及主族元素Si加入硫化物晶格等。这些异常特征在皖南东至金矿化区得到了良好的体现,其成因是不能用经典的平衡态热力学和晶体化学理论来解释的。