线天线辐射特性的矩量法分析

用矩量法对偶极子天线上的电流分布进行了分析，对电流分布的海伦方程用点匹配法进行了求解，最后得到了天线的电流分布和功率辐射方向图。     

本底个值质控图对甲功仪长期稳定性监控的意义

从甲功仪获得131I摄取率的准确性角度探讨甲功仪的短期、长期稳定性。通过建立本底个值质控图对甲功仪进行质量监控。提出了影响甲功仪稳定性的因素及处理办法，目前对甲功仪质控无统一标准，此监控结果较准确、方法简单易行。     

Two Modified Semicircle Control Charts for Detecting Process Improvement

A semicircle control chart can be used in detecting both increases and decreases in the mean and/or variance. In this paper, we propose two modified semicircle charts for detecting a reduction in the process variance, a.k.a. process improvement. Each of these modified semicircle charts, namely, SC1 and SC2 has two limits, defined by the inner and outer semicircles. A process improvement is detected by the SC1 scheme if a point is plotted inside the smallest semicircle, or if two successive points are plotted between the inner and outer semicircles and by the SC2 scheme if a point plots inside the smallest semicircle or if two of three successive points plot between the inner and outer semicircles. It will be shown that the two modified semicircle charts have superior average run length (ARL) performances to the basic semicircle chart in the detection of process improvement. The ARL study is conducted by means of a simulation.     

可编程控制器(PLC)在泥炮控制中的应用

泥炮是炼钢厂中控制炼钢炉钢水出口的一部分设备，系统较庞大，工序较复杂，用常规控制较难实现，而采用PLC可对其进行控制。该系统共有38点数字量入、33点数字量出、1路模拟信号(压力)，采用三菱公司的FX2系列PLC。由于该系统工艺的复杂性、特殊性，在控制软件的编制上并没有统一采用梯形图编程法，而是采用梯形图编程法与状态转移图编程法相结合的方法，这样大大提高了软件的可编性、可调性、可读性。用状态转移图法编程不用特意考虑就解决了系统在设定压力点附近的抖动问题，而用梯形图法编程则必须特别小心，否则很易使系统在设定点附近抖动起来，通过调试与运行充分体现了这种编程方法的实用性与PLC的可靠性、可维修性、可修改性。     

图像智能化的目标检测技术(Ⅱ)--数据流程与背景感知

着重探讨了线性预测估计和非线性均值滤波两种常用背景估计技术和自适应空间滤波的形态学背景感知方法.形态学背景感知方法从精细刻画图像的结构特征并基于形状细节进行图像分析入手,将使操作过程得以从近似的线、面传统模式中解脱出来,面向更为真实和丰富的自然结构,改善了处理效果.实验测评表明,形态滤波算法对背景的自适应感知能力最强,输出结果能真实贴切地反映图像背景的起伏变化规律,因而具有抑制杂波噪声和增强目标信号的双重功效.     

联盟企业中伙伴选择的质量决策问题

联盟企业是未来的一种企业模式．如何选择合适的伙伴企业是盟主企业必须面临的问题．在描述了质量决策模型的基础上．给出了应用统计方法对质量数据进行统计,通过数据输出给出质量问题模糊答案的方法．并以实例说明该方法的具体应用．     

PLC在POLO轿车密封条生产线中的应用

本文介绍了PLC控制系统在POLO轿车密封条生产线中的应用，PLC的硬件配置，软件设计思想，模块化的程序结构，以及人机界面的设计。     

An integrated multidimensional process improvement methodology for manufacturing systems

In this paper, an integrated multidimensional process improvement methodology (IMPIM) is formulated to address the yield management, process control and cost management problems of a manufacturing system. Simulation is used as a platform to implement the integrated multidimensional process methodology by incorporating the productivity, quality and cost dimension in a unified, systematic and holistic manner. Total Quality Management (TQM) addresses the quality parameters and Activity-Based Costing is used to manage the cost dimension of the system. Discrete event simulation is then used as a platform to perform process reengineering (Business Process Reengineering) and process improvement (TQM). The general implementation framework of the IMPIM is given with a step-by-step explanation. A conceptual discussion is also provided for the integrated methodology. The generic IMPIM is then formulated and the detailed implementation procedures for two case studies are compared with the generic methodology.     

氯离子和硫离子对不锈钢侵蚀性比较

根据阳极极化曲线和电化学阻抗谱 ,比较了模拟冷却水中氯离子和硫离子对 3 1 6L不锈钢钝化膜耐蚀性能的影响。结果显示 ,氯离子的质量浓度大于一定值时使不锈钢在模拟冷却水中的点蚀电位降低 ,但在开路电位下自然形成钝化膜过程中电极阻抗值变化较小。硫离子使不锈钢钝化膜钝态电流显著增加 ,降低了电极的阻抗值     

一种改进的控制系统QFT设计算法

定量反馈理论（QFT）是一种设计具有不确定性的多变量控制系统的直接而有效的方法。针对现有的QFT设计算法计算量大的缺点,提出了一种改进的设计算法。最后以挠性卫星三轴姿态控制系统的俯仰通道作为设计实例,仿真结果表明了所提算法的有效性和优越性。