水电厂计算机监控软件中的数据库管理系统

对水电厂计算机监控软件中的数据库管理系统进行分析研究，采取自行开发实时数据库管理系统和商用数据库管理系统相结合，并将二者紧密集成，集中管理实时数据和非实时数据，为应用软件提供了统一透明的SQL操作接口．该数据库管理方案具有快速响应、可扩充性好、使用方便等特点．     

Inference and retrieval of facial images

Attempts have been made to extend SQL to work with multimedia databases. We are reserved on the representation ability of extended SQL to cope with the richness in content of multimedia data. In this paper we present an example of a multimedia database system, Computer Aided Facial Image Inference and Retrieval system (CAFIIR). The system stores and manages facial images and criminal records, providing necessary functions for crime identification. We would like to demonstrate some core techniques for multimedia database with CAFIIR system. Firstly, CAFIIR is a integrated system. Besides database management, there are image analysis, image composition, image aging, and report generation subsystems, providing means for problem solving. Secondly, the richness of multimedia data urges feature-based database for their management. CAFIIR is feature-based. A indexing mechanism,iconic index, has been proposed for indexing facial images using hierarchical self-organization neural network. The indexing method operates on complex feature measures and provides means for visual navigation. Thirdly, special retrieval methods for facial images have been developed, including visual browsing, similarity retrieval, free text retrieval and fuzzy retrieval.     

Electronic data acquisition forms in construction management

Effective management of construction projects depends on good access to and control of data, especially data pertaining to cost and schedule control functions. However, the proper design and development of automated mechanisms have not had the facility to acquire and store quality data in a timely manner. The purpose of this paper, then, is to discuss a prototype, automated data acquisition system that was developed to support an integrated project management system. The data acquisition system is composed of an integrated set of electronic forms used in conjunction with a bar coding data-entry tool.     

Directional features in online handwriting recognition

The selection of valuable features is crucial in pattern recognition. In this paper we deal with the issue that part of features originate from directional instead of common linear data. Both for directional and linear data a theory for a statistical modeling exists. However, none of these theories gives an integrated solution to problems, where linear and directional variables are to be combined in a single, multivariate probability density function. We describe a general approach for a unified statistical modeling, given the constraint that variances of the circular variables are small. The method is practically evaluated in the context of our online handwriting recognition system frog on hand and the so-called tangent slope angle feature. Recognition results are compared with two alternative modeling approaches. The proposed solution gives significant improvements in recognition accuracy, computational speed and memory requirements.     

无线传输有线接入钻井数据库管理系统

本文详细的介绍了无线传输有线接入钻井数据库管理系统的设计和实现过程,同时对系统体系研制思路及关键技术,数据库系统结构、功能及特点等进行了阐述。通过应用该钻井数据库管理系统,管理者能够迅速、准确、全面、及时地掌握全油田钻井生产状况和钻井生产系统内部的钻井生产物料、资金等的使用情况,以便增强钻井生产系统的应变能力,提高钻井生产管理水平,从整体上提高全油田生产效率、生产资金的利用率,达到提高经营效益的目的。     

激光切割工艺参数优化数据库系统

用Visual Basic 6.0和用SQL server 7.0设计了激光切割工艺参数数据查询系统.能实现对常用材料的激光切割工艺参数进行查询.同时,提供了方便的数据库维护方法,提出用户基于Web技术的数据库更新方法.     

炼钢厂成本分析信息系统的开发设计

文章介绍了包钢炼钢厂生产管理信息系统中成本分析子系统的可行性分析以及具体的数据归集流程,详细介绍了该系统的开发环境以及该系统的模块和数据库的结构、功能及其具体的设计思想;简要介绍了Oraele Develop数据库开发应用的一些特点.     

包钢热电厂综合管理信息系统

本文论述了包钢热电厂综合管理信息系统的设计思想、功能模块、数据库和实现方法。该系统实现了生产数据及相关信息的数据采集与各类指标的管理统计、设备及材料的管理等各项业务处理，使得生产信息准确、唯一地传递，为生产经营者提供全面查询、分析、预测的依据，基本达到“无纸办公”的水平。     

VB在水利水电工程造价软件开发中的应用

通过对水利水电工程造价系统功能需求的分析和对定额库结构的剖析与设计，应用VisualBasic6．0(vB)编程的ADO技术，实现对定额数据库的操作，应用VB的类抽象定额的实体对象，简化水利水电工程造价计算。该系统采用VB的数据环境及数据报表制作成果的输出报表，应用VB的ActiveX（TM)技术实现对Excel、Word的使用。