客运决策支持系统数据仓库模型的研究与应用

铁路客运决策支持系统是铁路信息化的必然产物，本文结合客票系统和18点速报提供的数据源，进行了客运决策支持系统的数据模型设计，并研究设计出了一套数据仓库系统设计可借鉴的数据模型设计方法，运用这些方法解决了维表和事实表的关系识别，事实表存储以及如何捕捉数据变化等几个难题。     

决策支持物流管理信息系统的设计与开发

介绍了决策支持系统的概念及其内容，分析了在物流管理信息系统基础上实施决策支持系统的必要性和可行性，并针对库存问题研制了决策支持系统，研究了决策支持在物流企业中的实际应用．利用现代的信息分析技术，把决策支持系统应用于信息系统，将管理信息系统延伸为决策支持下的管理系统，为企业决策者提供决策支持，提高企业核心竞争力．     

大坡度斜井断面测量

介绍海南某工程大坡度斜井净空断面测量方法。通过数据采集,进行坐标转换,能够方便地计算出测点超欠挖。现场测量表明:该方法经济实用,能达到事半功倍的效果。     

基于Vague集和GIS的铁通运营决策支持系统

铁通运营决策支持系统的应用使铁通公司决策智能化,提高了决策的质量和效率.介绍了系统设计和功能结构,阐述了数据仓库技术、GIS技术在Vague集决策支持系统中的应用.该系统实现了数据库管理,问题分析,专家决策等功能.     

Seasonal variability of the Black Sea chlorophyll-a concentration

The optimal spectral decomposition (OSD) method is used to reconstruct seasonal variability of the Black Sea horizontally averaged chlorophyll-a concentration from data collected during the NATO SfP-971818 Black Sea Project in 1980–1995. During the reconstruction, quality control is conducted to reduce errors caused by measurement accuracy, sampling strategy, and irregular data distribution in space and time. A bi-modal structure with winter/spring (February–March) and fall (September–October) blooms is uniquely detected and accurately documented. The chlorophyll-a enriched zone rises to 15 m depth in winter and June, and deepens to 40 m in April and 35 m in August. The June rise of the chlorophyll-a enriched zone is accompanying by near-continuous reduction of upper layer maximum chlorophyll-a concentration.     

现行公路工程竣工资料归档管理办法存在的问题和解决办法探讨

公路工程竣工资料归档工作是工程建设与管理的重要内容,但由于现行管理办法尚有一些不合理之处和在认识上存在一些误区,导致在实践中,一方面造成资料规模过大,增加了管理成本;另一方面却降低了资料的档案属性和利用价值。本文拟从施工技术管理和档案管理两个专业角度,就如何提高在工程建设中资料收集工作的有效性,增加档案资料的档案价值方面,进行初步的探讨。     

Sequential data assimilation in an upwelling influenced estuary

We have evaluated the impact of assimilating chlorophyll, nitrate, phosphate, silicate and ammonium into a coupled 1D hydrodynamic ecosystem model (GOTM-ERSEM) in an upwelling influenced estuary. The assimilation method chosen is the Ensemble Kalman Filter (EnKF), which has been demonstrated to improve field estimates of key variables (chlorophyll, nutrients) for bulk algal bloom prediction. The 1D model has been set up for a central station inside the Ría de Vigo (Spain). Data from bi-weekly surveys are used to constrain the model. Temperature and salinity profiles are used to ensure the correct representation of the water structure through a relaxation scheme. Chlorophyll extracts and nutrients at three depths are assimilated sequentially during 1 year simulation (1991). The assimilation period includes episodes of active upwelling and downwelling. All five assimilated variables are successfully constrained and represent a large improvement on the reference simulation (without assimilation). Small divergences can be related to poorly resolved physical processes in the model. The assimilation was further evaluated by comparing observed biomass partitioning with model results. Diatoms accounted for the largest biomass update and the largest improvement in terms of percentage of variance explained (R²). This is particularly significant as they represent the 46% of the yearly integrated observed biomass of the planktonic autotrophs. Nonetheless the R² value was low for all phytoplankton groups. Bacteria and nanoflagellates showed an improvement with respect to their yearly Root Mean Square (RMS), while the other functional groups worsen or remained unaffected. Chlorophyll assimilation was responsible for most of the impact on the phytoplankton biomass with small contributions from the silicate. It had minor impact on the updates of nutrients which in turn corrected the state variables related to the detrital pool. In this current setting, combined assimilation of chlorophyll and nutrients is not sufficient to produce a skillful simulation of the phytoplankton succession.     

在IDS中利用数据挖掘技木提取用户行为特征

IDS(入侵测系统)是一种测网络入侵行为的工具。然而现在的IDS在提取用户行为特征的时候不能很好的反映出真实的情况，经常出现漏报或误报的情况。作者详细讨论了利用数据挖掘技术提取用户行为特征的方法，提出了采用数据挖掘技术的入侵，测系统的结构模型。     

COBOL语言数据文件格式分析及其转换

作者对ＣＯＢＯＬ语言的数据文件格式进行了分析，并给出了将其转换为ＤＢＦ文件的示范程序。     

计算机数据通信接口卡的设计

数据通信是现代通信的主要方式。研究数据通信对把握通信的发展方向有重要作用。论文 中对数据通信的概念及相关的协议标准进行了讨论。并利用ISA插槽，使用Intel珠8255A及8251A实现并行通信及串行通信。外部遵循RS－232－C及IEEE－488标准，只要遵循同一协议就可互连。