一种基于数理统计数据挖掘方法的研究

分析了数理统计方法在数据挖掘中的作用，提出了一种基于数理统计的数据挖掘模型，并用实例证明该数据挖掘模型的有效性。     

在Delphi应用程序中提高录入效率的方法

利用Delphi的ComboBox组件和系统初始信息、DBGrid组件、代码和设置文本输入框的输入模式等4种方法，提高了录入效率。给出1个例程的详细代码。     

电路节点的数据结构及电路方程的数据结构

简要介绍了一般电路的数据结构brlist和基尔夫回路集的数据结构kichhoff，提出了电阻、恒压源和恒流源等元件的数据结构和电路节点集的数据结构dotsque，给出了由电路brlist得出dotsque的算法，通过一个实例分析了实际电路、brlist、kicrhhoff和dotsque的关系，给出了KVL方程、KCL方程和电流电压方程的数据结构，最后从人工智能和机器学习的角度讨论了非线性复杂的计算机表示方法和计算机自动求解的问题。     

Simulation and evaluation of the quality and availability of typical GLI ocean image

ADEOS-II satellite will be launched in the near future. It collocates many remote sensing instruments in the same platform. Among them, Global Image (GLI) is considered to be a main sensor which will play a key role. In order to understand the characteristics of future GLI ocean color images, a simulation and evaluation of the quality and availability of GLI typical ocean image has been done. In the paper, we first introduce the simulation models briefly, and simulate typical cases of radiance images at visible channels, in which the radiance distribution is based on geographic location, the satellite orbital parameters and sensor properties. A method, complex signal noise ratio (CSNR) to evaluate the image quality and availability, is developed according to the characteristics of image. Meanwhile, a series of CSNR images are generated from the simulated radiance components for different cases, which can be used to evaluate the quality and availability of GLI images before the ADEOS-II is placed in orbit. Finally, the quality and availability of GLI images are quantitatively analyzed by the simulated CSNR data. The results will be beneficial to the people who are in charge of GLI mission or plan to use the data from GLI.     

Temporal-spatial characteristics of vegetation cover and desertification of China by using remote sensing data

Based on the NOAA advanced very high resolution radiometer (NOAA-AVHRR) remote sensing data of 1982 — 1999. the normalized difference vegetation index (NDVI) reflecting the surface vegetation cover has been obtained. Using the empirical orthogonal function analysis, the temporal-spatial eigenvectors of NDVI are given, and the characteristics of the spatial distribution of vegetation cover and its temporal variation together with the desertification of China are analyzed. It is found that the surface vegetation cover has seriously deteriorated in most part of China since 1995. along with the intensified desertification. All these are mainly caused by human activities although the climate change is responsible for the damage of surface vegetation cover to some extent.     

VB6数据报表页面的动态设置

给出使用VB6数据报表设计器（Data Report Designer)设计的报表，打印时能自动动态设置页面参数，打印不同规格报表时，不需要手工改变打印设置。     

多媒体数据库技术的研究

本文介绍了多媒体数据库的现状以及多媒体数据的特点，并对多媒体数据模型和多媒体数据库技术进行了探讨。     

从关系数据库到扩展置标语言文档的数据映射方法研究

为了将关系数据以扩展置标语言（XML）数据的形式发布，分别提出了将关系模式映射为文件类型定义（DTD）和扩展置标语言方案（XMLSchema)的两种规则；非空表元素规则和空表元素规则，前者将关系模式中的表，记录和字段分别映射为表元素，表元素中的记录元素和记录元素中的字段子元素，后者将表映射为表元素，记录映射为表元素算法，前者借助一个链队列和两个栈分别存放解析得到的各级元素的开始，结束标记和属性，后者借助一个链队列存放解析得到的元素标记和属性，它们均可实现将关系数据写入XML文档，最后对实验结果进行了分析，得出在表数目相同，表中字段数也相同的情况下，表元素非空算法略优于空表元素算法的结论。     

基于事例的自适应关联规则挖掘模型的研究

认为传统的关联规则挖掘模型主要是针对结构化数据 ,其可信度和支持度不能随环境的变化自适应调节 ,即缺乏自适应性 ,而现实中还存在大量非结构化的数据 .针对传统发现模型的不足提出了一个基于事例的自适应关联规则发现模型 ,它不仅可以处理对非结构化数据的数据挖掘 ,而且还可以随着环境的变化自适应调节支持度和可信度 .     

基于计算机声卡的多通道数据采集系统

运用LabVIEW开发系统，在配置有4块声卡的计算机上，实现了同时进行了4个通道的并行数据采集，解决了在同一时间坐标中显示多个具有独立时钟的波形问题，从而构成了一个多通道数据采集系统。实验结果表明：该系统能够正确采集声卡设计频率范围内的信号，可用于在该频段需要数据采集与一般分析的领域。