交互式图形技术在DSS中的应用

DSS由数据管理子系统、模型管理子系统及对话子系统三大部分组成。从用户管理介面的角度讲,如何建立一个友好的用户介面以支持用户进行决策分析是建立DSS时必须考虑的一个重要因素。本文主要讨论交互式图形技术在模型管理子系统及对话管理子系统中的应用,以建立一个友好的用户介面。文中以一具体的统计分析支持系统为例,说明了应用这种技术的实用性及有效性。该系统已用Turbo-Prolog语言实现。     

GIS关系数据库管理子系统开发浅议

地理信息系统中关系数据库管理子系统一直占据着比较重要的地位。本文回顾了国产ＧＩＳ软件开发数据库管理子系统的模式，提出利用数据库引擎和ＯＤＢＣ编程技术构筑应用数据库引擎，从而进一步开发出关系数据库管理子系统的方案，说明了实现数据库访问的技术方法，原理和特点。     

汉字通用交互式数据管理系统CGIDMS

数据管理系统是MIS(管理信息系统)和DSS(决策支持系统)的必要组成部分,是MIS和DSS的基础。在MIS和DSS中数据管理系统担负着处理数据、生成信息的任务。我们利用汉字编译型dBASE Ⅲ开发了汉字通用交互式数据管理系统CGIDMS。该系统以多级文卷目录形式将众多文卷有效地组织起来,高效地完成种种数据管理,获得了很好的实用效果。所谓文卷是指可由用户直接访问的数据库文件。每个文卷都有供用户识别的外部名和供系统识别的内部名。     

新型数据管理系统研究进展与趋势

随着各类新型计算技术和新兴应用领域的浮现,传统数据库技术面临新的挑战,正在从适用常规应用的单一处理方法逐步转为面向各类特殊应用的多种数据处理方式.分析并展望了新型数据管理系统的研究进展和趋势,涵盖分布式数据库、图数据库、流数据库、时空数据库和众包数据库等多个领域.具体而言：分布式数据管理技术是支持可扩展的海量数据处理的关键技术;以社交网络为代表的大规模图结构数据的处理需求带来了图数据库技术的发展;流数据管理技术用来应对数据动态变化的管理需求;时空数据库主要用于支持移动对象管理;对多源、异构而且劣质数据源的集成需求催生出新型的众包数据库技术.最后讨论了新型数据库管理系统的未来发展趋势.     

Oracle数据库管理系统在PowerBuilder下的实现

介绍了Oraclc数据库和PowerBuilder集成开发环境的特点,利用PowerBuilder下的Oracle数据库管理机制,开发了一个CIQ2000综合业务系统数据库管理子系统,实际运行表明其性能良好。     

DSS应用中一种跨数据库平台的数据抽取技术

DSS开发过程中,最关键的是数据抽取技术,如何有效地从已有的数据库中提取所需的信息非常重要,本针对DSS应用开发的特点,采用面向对象的方法,设计了一种动态链接库,解决了跨数据库平台的数据抽取问题。     

异构数据库间的数据集成

针对不同数据库之间的产品,给出了Ｐｏｗｅｒｂｕｉｌｄｅｒ与不同数据库之间的连接方法,动态地生成数据管理及数据窗口,以实现异构数据库之间数据集成。     

面向数据库的化工软件集成环境的设计

对于化工领域,用户若能够在一个软件集成环境上对现有的化工软件进行集成,则可以很大程度上节省用户软件二次开发或掌握集成技术所耗费的人力物力。本文试图研究开发一种化工软件集成的环境。利用Windows自身的特点,以及其管理应用程序的一般方法,设计了化工软件的集成环境。该集成环境由界面集成模块、代码集成模块、数据集成模块和数据库管理子系统4个模块组成,对于4个模块分别给出了界面集成策略、代码集成策略、数据集成策略、数据库和数据库管理子系统的建立策略。     

DSS中数据管理新技术研究

数据仓库和OLAP技术是有效使用大量、分布、异构数据源的先进技术,自出现以来就成了现代DSS数据管理子系统的核心,为DSS的开发和应用开辟了一条新的途径.     

全面了解ODBC技术

开放式数据库互连技术在数据管理上可谓是数据库之间的桥梁,使得一个个小数据库连成了一个大的数据库,共享了信息资源。     

GFKD—DSS决策支持系统开发工具

GFKD-DSS系统是一个决策支持系统开发工具.它由两大部分组成:管理系统和运行控制系统.管理系统提供DSS管理语言,实现对模型库的管理、模型文件的管理和对数据库的使用.运行控制系统提供DSS核心语言,该语言具有数值计算、数据处理,模型控制、多个模型的组合等多种功能的综合能力.利用本系统能生成国民经济、军事指挥中各种半结构化或非结构化决策问题的决策支持系统.     

A web-based GIS Decision Support System for managing and planning USDA's Conservation Reserve Program (CRP)

The Conservation Reserve Program (CRP) is one of the largest programs of the U.S. Department of Agriculture (USDA) aimed at encouraging farmers and ranchers to address soil, water, and related natural resource issues on their lands in an environmentally sustainable manner. This paper outlines the design and development of a prototype web-GIS Decision Support System (DSS), CRP-DSS, for use in resource management and assessment of environmental quality. Specifically, the DSS is targeted toward aiding USDA to better manage and plan CRP enrollments. The DSS is based on the emerging industry-standard ArcIMS GIS platform and integrates a mapping component AFIRS (Automated Feature Information Retrieval System) and a modeling component SWAT (Soil and Water Assessment Tool). Our novel integrated web-GIS DSS is implemented using web server and Java Servlet technology over an ArcIMS platform to support data access and processing in a distributed environment. AFIRS functions as a feature extraction protocol that uses multisource geospatial data sets and SWAT serves to simulate long-term trends of soil and water quality. The prototype DSS was applied to simulate the sediment and nutrient dynamics of a small watershed in the Oklahoma Panhandle. We intend to develop the prototype CRP-DSS into a full-fledged tool geared to enable USDA better manage and plan future CRP enrollments.     

决策支持系统在生态环境监测与管理中的应用

决策支持系统是综合利用各种数据、信息、知识和模型技术，辅助决策者解决决策问题的人机交互系统，根据研究区生态环境的空间组合关系建立模型，将环境监测与管理技术与决策支持系统的思想相结合建立环境资源决策支持系统，并设计开发生态环境监测与管理智能决策支持系统（EMIDSS），提出资源合理利用及环境整治的方案。     

A decision support system for investment planning on a microcomputer

A Decision System (DSS) for investment planning was designed and implemented for Pohang Iron and Steel Co., Ltd. (POSCO), using a database management system on an MS-DOS micro-computer. This paper outlines the design of an investment DSS which focuses on mid- and long-term investments. It also considers why such an investment DSS is needed at POSCO, discusses problems encountered in designing the DSS, and establishes decision criteria for determining investment priorities. The modelbase proposed uses the concepts of Analytic Hierarchy Process (AHP) and Zero-Base Budgeting (ZBB), along with an appropriate scoring method, database and dialogue system to support the investment manager in evaluating investment proposals. Results of implementing the investment DSS are discussed.     

An agent-based Decision Support System for resources' scheduling in Emergency Supply Chains

We propose a multi-agent-based architecture for the management of Emergency Supply Chains (ESCs), in which each zone is controlled by an agent. A Decision Support System (DSS) states and solves, in a distributed way, the scheduling problem for the delivery of resources from the ESC supplying zones to the ESC crisis-affected areas. Thanks to the agents’ cooperation, the DSS provides a scheduling plan that guarantees an effective response to emergencies. The approach is applied to two real cases: the Mali and the Japan crisis. Simulations are based on real data that have been validated by a team of logisticians from Airbus Defense and Space.     

烟草业务联机分析处理系统的实现

数据库技术的广泛应用以及数据仓库技术的出现为决策支持系统提供了新的发展方向。联机分析(onlineanalyticalprocessing,简称OLAP)正是在数据仓库的基础上发展起来的一门崭新的决策技术。文章结合某市烟草决策支持系统,介绍了基于联机分析处理技术的烟草数据分析系统的设计思路与实现方法,并对其中关键环节进行了较为详细的探讨与阐述,为联机分析处理技术的实用化提供了可借鉴的成功经验。     

基于数据仓库技术的决策支持系统的应用研究

数据仓库和联机分析处理是信息领域新兴的计算机技术,近年来得到了广泛的应用。本文以上海市公交一卡通工程决策支持系统为背景,给出一种基于数据仓库和联机分析处理的专用的决策支持系统的实现方案,解决了长期困扰决策支持系统的数据管理问题和观察分析问题,对现实有一定的指导作用。     

Audit trails of System Replacement (SR) and user satisfaction: An empirical study of Micro,Mini and Mainframe computers using a telecommunication Decision Support System (DSS) network

This study analyzes the influence of System Replacement (SR) on overall computer user satisfaction. The following are found to be the most significant variables effecting overall satisfaction: System Replacement and User Responses. The Average Life in Months has the least significant effect in the user satisfaction model. An interactive Decision Support System (DSS) for SR is designed, developed and demonstrated in this study. The application of such a DSS is explained along with the use of telecommunication networks. The implications for improvements in SR by updates to a DSS data base are discussed and analyzed.     

Development of a web-based decision support system for supporting integrated water resources management in Daegu city,South Korea

Demands on fresh water by human beings have been continuously increasing due to population growth, living standard improvement, and economic development. At the same time, many regions are suffering greatly from floods and droughts. Those are the results of ineffective management of water resources due to the associated complexities. In this study, a decision support system (DSS) was developed for supporting integrated water resources management in Daegu city, Republic of Korea. The developed DSS contained four subsystems including database, modelbase, and knowledgebase, as well as general user interface (GUI). It was then connected with the National Water Management Information System (WAMIS). A flow prediction could be conducted through the incorporated HEC-HMS Version 3.0.1. Also, an urban water demand forecasting model was developed using an artificial neural network (ANN) based model. At the same time, a water resources management model based on genetic algorithm (GA) was developed in the DSS, facilitating efficient allocation of water resources among different regions within a city. The result indicated that the developed DSS is very useful to deal with complex water resources management problems and could be further applied to similar cities in South Korea.     

基于数据仓库三层架构的决策支持系统应用研究

数据仓库与联机分析处理(OLAP)技术已成为企业决策支持系统的关键.探讨了基于数据源、数据仓库及OLAP应用三层架构的决策支持系统的体系结构,并结合具体实例给出了系统设计和实现过程.