种子动态图像匹配与拼接技术研究

在基于机器视觉的多排种体动态检测技术研究中 ,鉴于播种后种子动态图像的匹配与拼接精度是个需要解决的难题 ,为此从系统实时性要求出发 ,在运用模式识别技术进行检测的实践基础上 ,阐述了检测系统的构建原理 ,分析了影响图像拼接精度的因素 ,进而提出了基于标记的图像匹配与拼接方法、重叠区域设置技术等 ,从而为试验台自动检测奠定了基础。该理论分析经过大量试验验证表明 ,该方法应用于检测试验台中 ,检测误差小于等于± 2 mm,可满足系统实时检测技术要求     

网络面向对象的软件测试技术的研究

面向对象软件测试技术的研究是面向对象开发方法不可缺少的一环。但是随着面向对象技术的引入,面向对象程序开发语言成为主流编程语言，传统的瀑布式软件工程模型受到挑战，传统的测试技术已经无法有效地进行测试。因此文中在对软件测试技术进行了综合分析的基础上，提出了面向对象的测试模型。同时对一个已实现的、具有高度可重用性和灵活性的面向多种OO语言的测试工具Panorama的系统结构进行了分析。     

Web-based Assessment and Test Analyses (WATA) system: development and evaluation

This study introduces the development of a Web‐based assessment system, the Web‐based Assessment and Test Analyses (WATA) system, and examines its impacts on teacher education. The WATA system is a follow‐on system, which applies the Triple‐A Model (assembling, administering, and appraising). Its functions include (1) an engine for teachers to administer and manage testing, (2) an engine for students to apply tests, and (3) an engine for generating test results and analyses for teachers. Two studies were undertaken to assess the usefulness and potential benefits of the WATA system for teacher education. In the first study, 47 in‐service teachers were asked to assess the functions of the WATA system. The results indicated that they were satisfied with the Triple‐A Model of the WATA system. In the second study, 30 pre‐service teachers were required to use the WATA system during the teacher‐training program. After 4 months of experience in using the WATA system, the pre‐service teachers' perspectives of assessment have been changed significantly. The findings of these two studies might provide some guidance to help those who are interested in the development of Web‐based assessment and intend to infuse information technology into teacher education.     

超声波电机速度特性测试技术研究

电机性能测试的离散数据中包含各种扰，必须对测试数据进行数字处理。文中用计算编程采集光电编码器脉冲值，并采用曲线拟合、数字滤波的方法对所测信号进行处理，得出电机运行特性曲线，为进一步改进超声波电机运行特性和提高控制的性能奠定基础。     

脉冲电容器的可靠性试验研究

结合美国惯性约束聚变(ICF)装置脉冲电容器的试验情况,从可靠性的角度讨论了脉冲电容器的可靠性筛选试验、老炼试验和寿命试验,并简要地介绍了脉冲电容器性能数据处理的几种途径,以及几种常用的电容器加速寿命试验模型。     

Concurrent analogue fault simulation,the equation formulation aspect

Fault simulation is an essential tool for developing test patterns for circuits. Because the potential number of faults in a circuit is potentially very large, computational efficiency is an important consideration. In the digital domain, concurrent fault simulation is well‐established as an efficient tool. For analogue circuits, fault simulation is often performed by repeated insertion of possible faults and resimulation of the circuit. Consequently, methods for efficient concurrent analogue fault simulation are attracting attention. A review of existing methods of concurrent analogue fault simulation shows that most are based on a similar fundamental perturbation of the original fault‐free circuit equations, although the methods differ in the procedure applied after the circuit equations are formulated. We develop here a comprehensive set of element stamps, describing faulty elements, enabling effective and routine equation formulation for faulty circuits. These may be used no matter what method of fault simulation is later applied. These stamps are used in a new technique for concurrent analogue fault simulation, based on modified nodal analysis. A significant improvement in efficiency, compared with other methods, is demonstrated. Copyright © 2004 John Wiley & Sons, Ltd.     

我国火力发电厂燃料试验现状与分析

从仪器设备、标准应用及人员素质三方面介绍我国火力发电厂燃料试验现状，指出解决问题的途径，并提出相关建议。     

电压无功综合控制装置调试仪的研发及改进

通过时电压无功综合控制装置(VQC)应用现状的分析，提出了研制VQC装置调试仪的必要性，详细论述了调试仪的设计原理，介绍了其使用效果并提出了改进方案。     

我国500kV紧凑型输电线路的研究与应用

文章以我国第一条500kV紧凑型输电线路(北京昌平至房山)为例，对500kv紧凑型输电线路关于提高自然输送功率、紧凑化技术、绝缘配合、带电作业、大负荷试验研究等主要问题及其在工程中的应用、应用前景进行了综合论述。     

HG-465/13.7-L.PM7型循环流化床锅炉的调试

介绍国内现在运行的最大的循环流化床锅炉——HG-465／13．7-L．PM7型锅炉的结构和系统布置，着重对该炉烘炉、流化试验、冷渣器的冷态试验和运行中风量调整、风压控制、燃煤控制、污染物排放控制及冷渣器热态凋整作了介绍，分析该炉的调试、运行和燃烧调整等特点。通过调试和试运行，可看出该炉运行稳定，但还有许多设计和运行优化工作需进一步完善。