共查询到18条相似文献，搜索用时 171 毫秒
1.
2.
3.
基于MapObjects的水环境规划系统 总被引：1，自引：0，他引：1
根据GIS开发设计中原型法的思想,以结构化系统分析为主要技术路线,利用面向对象技术和组件技术,用可视化编程语言VisualBasic和GIS控件MapObjects开发了城市水环境规划系统,探讨了一些GIS二次开发方面的主要技术问题,将集成系统应用于淮南市水环境规划中,并对不同条件下水资源变化情况进行预测。将GIS与水环境模型集成,在改进管理方式、提高规划效率、改进模型可操作性等方面十分有效。 相似文献
4.
地图数据库中的结构化河网及其自动建立 总被引：3，自引：0，他引：3
杜清运 《武汉大学学报(信息科学版)》1988,(2)
本文提出了一种基于河段的结构化河网,讨论了这种结构化河网的自动建立过程,主要包括两个结构索引即线索树结构索引及层次结构索引的自动产生;根据包含以上两个索引的结构化河网,提供了若干检索函数,作为地图数据库中结构处理时结构信息的提取手段。 相似文献
5.
熊庆文 《武汉大学学报(信息科学版)》2004,29(2):111-115
讨论了一个面向工作流的项目管理系统中 ,各类计划、实施、监督管理、汇总报表等结构化文档及非结构化文档的存储访问系统的构造方法 ,并设计与实现了一个数字化测绘生产管理系统实例 相似文献
6.
研究利用设计模式来指导分布式环境下空间数据存储中间件产品的设计与实现,试图通过合理的模式选择来优化软件的设计结构,用于解决存储中间件中异质数据库集成和多事务并行处理两类关键技术问题,并根据讨论的结果做出了相应结构化设计。 相似文献
7.
8.
9.
传统的GIS系统开发多采用结构化的设计思想,对于不同GIS信息系统的建设,需要重复去设计、开发相关模块,开发效率较低.将组件重用思想应用到GIS开发实践中,总结了组件、组件重用思想及组件开发流程,探讨了GIS开发中可重用接口的设计思路,包括:空间数据库连接和图层加载接口设计,数据查询和维护接口设计,空间分析接口设计.应... 相似文献
10.
本文首次将神经网络理论引用到测量平差的计算中，研究了神经网络理论在测量平差计算中应用的可能性和实用性，提出了用Ｈｏｐｆｉｅｌｄ网络和多层结构化前向神经网络解决测量平差中线性方程组解及逆矩阵计算等问题。 相似文献
11.
建立面向区域农业可持续发展的空间决策支持系统的方法探讨 总被引：15，自引：2，他引：15
在解决诸如工业选址的空间问题时，空间决策支持系统避免了流行的商用ＧＩＳ软件在空间信息的分析评价，时空分布，预测和模拟以及决策等模型分析功能的不足，该文提出了建立ＳＤＳＳ的两种基本途径；一是利用现有ＧＩＳ与分析决策模型进行集成联结生成ＳＤＳＳ；另一种途径是自行开发具有空间数据管理和分析决策模型的一体化ＳＤＳＳ。 相似文献
12.
Piotr Jankowski Steven Robischon David Tuthill Timothy Nyerges Kevin Ramsey 《Transactions in GIS》2006,10(3):335-354
Collaborative spatial decision support systems (C‐SDSS) have been used to help groups of stakeholders understand data and search for opportunities at resolving local and regional decision problems in various domains including land use, trans‐ portation, and water resources. The key issue in designing an effective C‐SDSS is the anticipation of user information needs. Knowledge of user information needs can guide system designers in achieving a C‐SDSS that fits the decision process. In this paper we present a design approach that is informed by stakeholder concerns, as part of a user needs assessment. The approach is based on the premise that knowing stakeholders’ concerns can help anticipate user information needs and consequently lead to a more usable C‐SDSS. We demonstrate the approach with the example of a spatio‐temporal decision problem involving conjunctive water administration in the Boise River Basin in southwestern Idaho. The spatial dimension of the decision task involves delineating the areas of conjunctive water administration while the temporal dimension involves selecting the year in which a given area will start to be administered. We show how the elicitation of stakeholder concerns leads to functional specification of a collaborative spatio‐temporal decision support system. 相似文献
13.
空间决策支持系统开发平台及其应用实例 总被引：16，自引：0，他引：16
空间决策支持系统（Ｓｐａｔｉａｌ Ｄｅｃｉｓｉｏｎ Ｓｕｐｐｏｒｔ Ｓｙｓｔｅｍ ＳＤＳＳ）作为在地理信息系统（ＧＩＳ）和决策支持系统（ＤＳＳ）基础上发展起来的一个新光科学技术领域,自本世纪８０年代中后期后来,在国内外已引起越来越广泛的关注和重视。通过大量文献的分析表明：对这种系统目前尚有许多不同的理解和认识。作者认为只有那些能够帮助决策者生成、比较和选择空间决策方案的信息系统才能纳入ＳＤＳＳ的范 相似文献
14.
为了将定性的地质理论与计算机定量化分析结合起来应用于潜在矿产资源评价,并在潜在矿产资源评价决策支持中能够共享异构分布的决策资源,本研究采用了SOA(Service-oriented architecture)架构的软件开发方法,使用了Web Services技术,集成GMS、GIS和DSS功能,设计了基于Web的潜在矿产资源评价空间决策支持系统。本文选择了潜在铁矿资源评价作为实例对系统进行了验证,验证结果表明,该系统具有模型驱动、决策支持和空间分析集成、基于Web的决策资源共享、评价决策支持方式定性和定量有机结合的优点。 相似文献
15.
The multi‐objective land allocation problem is to optimize the selection of land for different uses based on a set of decision objectives. For most applications, a geographical information system (GIS) is either absent or loosely coupled through file exchange. In this article the evolutionary algorithm (EA), a heuristic solution method for optimization problems, is integrated with a raster GIS to form a spatial decision support system (SDSS) for multi‐objective conservation reserve design. The SDSS effectively combines the functions of a GIS for data management, analysis, and visualization, with the optimization capability of the EA; and provides a uniform way to solve conservation reserve design problems with different types of constraints and objectives. The SDSS is demonstrated through application to the creation of conservation reserves in Bolivia to protect 17 endemic mammals. 相似文献
16.
This paper explores data integration and compatibility issues raised during the development of a prototype spatial decision support system (SDSS) as a support tool for the farm manager of the University of Central Lancashire's farm at Newton Rigg and as a teaching resource for staff and students on campus. Metadata concerns and interoperability problems are addressed in detail. The paper outlines the proposed model for the SDSS and issues identified during the investigation of the users’ requirements and the analysis of the underlying spatial data sets. The initial data issues relate to the identification of existing and missing data sets ( Parker et al. 1996 ) and the creation of metadata describing the data sets. The second area to be explored concerns interoperability issues. This is relevant when users must access more than one dataset using distributed computing resources ( Sondheim et al. 1999 ). 相似文献
17.
Accounting for Spatial Uncertainty in Optimization with Spatial Decision Support Systems 总被引：2，自引：0，他引：2
Jeroen C. J. H. Aerts Michael F. Goodchild & Gerard B. M. Heuvelink 《Transactions in GIS》2003,7(2):211-230
Spatial decision support systems (SDSS) are designed to make complex resource allocation problems more transparent and to support the design and evaluation of allocation plans. Recent developments in this field focus on the design of allocation plans using optimization techniques. In this paper we analyze how uncertainty in spatial (input) data propagates through, and affects the results of, an optimization model. The optimization model calculates the optimal location for a ski run based on a slope map, which is derived from a digital elevation model (DEM). The uncertainty propagation is a generic method following a Monte Carlo approach, whereby realizations of the spatially correlated DEM error are generated using 'sequential Gaussian simulation'. We successfully applied the methodology to a case study in the Austrian Alps, showing the influence of spatial uncertainty on the optimal location of a ski run and the associated development costs. We also discuss the feasibility of routine incorporation of uncertainty propagation methodologies in an SDSS. 相似文献
18.
以Visual Studio 2008 C#和ArcGIS Engine为开发环境,将海峡西岸城市群作为案例,利用ArcEngine的嵌入式GIS组件,建立海峡西岸生态信息图谱的工具集应用系统,从而实现对海西生态环境系统特征的提取、分类、处理、分析和辅助决策等功能。通过建立图谱化工具集对生态信息的高度抽象和概括,更加突出、简要和直观地反映出生态环境影响要素的变化情况,并能够很好的展示区域动态发展趋势,以便更好地预测区域未来的发展状况,为建设决策者提供强有力的决策依据和技术支持。 相似文献