一个地下水流及溶质迁移模拟的图形化方案

本文介绍在地下水饱和系统中，对地下水流和溶质迁移模拟进行计算机图形化处理的方案。     

大型保温罐温度控制方法的研究

大型保温罐有较大的滞后，本文通过PID的各种控制方法对大型保温罐控制后分析提出了一种分段PID加经验预估的控制方法，并提出将问位增量进行等流量增量计算，可以有效地对大型保温罐实施控制。     

网络环境下实时图像信息处理传输系统

基于 MPEG-IV 编解码技术和 RTP/RTCP 网络传输协议,设计出一种以高速 DSPTMS320C6205 为核心处理器的实时图像信息处理传输系统(IPTS)。系统的总体构架采用Client/Server 模式,由现场视频信息采集前端、信息中心和视频信息传输网络构成。该系统融合了先进图像处理技术、信息技术、数据通信传输技术及自动控制技术等,能实时地采集和处理图像信息,并进行网络传输和控制,是一种范围大、方位全、实时、准确和高效信息综合处理系统。     

Artificial intelligence implementation in the APS process diagnostic

Thermal spray process is a technique of coating manufacturing implementing a wide variety of materials and processes. This technique is characterized by up to 150 processing parameters influencing the coating properties. The control of the coating quality is needed through the consideration of a robust methodology that takes into account the parameter interdependencies, the process variability and offers the ability to quantify the processing parameter-process response relationships. The aim of this work is to introduce a new approach based on artificial intelligence responding to these requirements. A detailed procedure is presented considering an artificial neural network (ANN) structure which encodes implicitly the physical phenomena governing the process. The implementation of such a structure was coupled to experimental results of an optic sensor controlling the powder particle fusion state before the coating formation. The optimization steps were discussed and the predicted results were compared to the experimental ones allowing the identification of the control factors.     

Adapting demons to knowledge management environments

Decision support systems depend on a variety of knowledge management techniques. These range from data base management, programming, and spreadsheet analysis to rule set management and automated inference. One valuable knowledge management technique that has yet to find its way into the repertoire of decision support system developers is general-purpose demon management. This article identifies and explores the major issues pertaining to the integration of demon representation and processing into a knowledge management environment. These serve as a basis for design and implementation of more flexible and powerful environments for decision support.     

三维医学可视化分析平台的研究

本文介绍西北大学可视化研究所研制的三维医学可视化分析系统。该系统可用于医学影像数据库、手术计划系统、远程会诊系统和计算机医学辅助教学系统的开发平台,为医学图像可视化提供了有力的工具。     

基于动态阈值的彩色图像边缘检测方法

本文基于Canny算法,提出了一种改进的彩色图像边缘检测方法,通过大量的实验证明该方法是一种有效的彩色图像边缘检测方法。     

Annealing process of fine grained co-stabilised (Y,Mg)-PSZ/MgAl2O4 ceramics

Abstract

Co-stabilised (Y,Mg) partially stabilised zirconia (PSZ) ceramics with MgAl₂O₄ spinel additions were produced, with industrial zirconia as the main starting material. Powders were prepared using a mechanical milling–mixing process. The effect of the annealing process on the mechanical properties, phase compositions, and microstructure of fine grained PSZ ceramics was investigated.     

水轮发电机组轴系横向自振特性的有限元分析

对水轮发电机组轴系的横向振动的自振特性进行了分析。采用有限元法,考虑陀螺效应,给出了计算模型,编制了计算程序ROTOR。用ROTOR计算了三座电站的轴系,结果与美国西屋公司的相应软件的计算结果相吻合。特别结合对隔河岩水电站轴系的分析,对工程设计提出了建议。     

基于高速高精度贴片机的几种图像并行处理方法研究

本文在分析并行图像处理常用方法的基础上，针对全自动贴片机视觉系统对图像处理要求，对矩形片式元器件(Chip芯片)和IC芯片图像并行处理方法进行了可行性分析，并从流水线并行和数据并行两个方面，对两种元器件在不同情况下提出了各自可行的图像并行处理框架和实现方法，对表面组装生产中图像并行处理方法进行了探索。