Petri网络理论在电网故障诊断中的应用

论述了基于Petri网络理论进行电网故障诊断的方法，描述了故障元件、保护、开关之间内在的动作关系，提出了运用简单的矩阵计算进行诊断的方法，与传统的专家系统相比，大大减少了诊断时间，提高了准确度，适用于各种网络拓扑，网络测试表明：该方法快速、准确，适于在线运行。     

基于受控Petri网的物流实验系统的研究

随着控制系统的复杂化,传统的方法已经不能很好地用于描述离散事件系统(简称DES)了.为此,定义了一种受控Petri网(简称CPN),并对其中冲突事件的避免进行了探讨.针对物流实验系统中被控点数较多、控制过程也较为复杂的特点,利用CPN技术对系统进行建模,较好地解决了系统中存在的一系列协调、竞争以及并发事件,有效地避免了冲突事件的发生,同时对于系统的CPN模型利用PLC加以实现,并验证其正确性及其可靠性.     

基于多智能体技术的反辐射导弹作战效能评估建模研究

分析了机载反辐射导弹的作战流程;建立了基于多智能体技术的复杂电磁环境下反辐射导弹作战效能评估模型框架;研究了基于Bayesian网的反辐射导弹作战效能评估模型。提出的建模方法对其他复杂装备系统作战效能评估研究具有参考作用。     

人工神经网络在改善报警系统性能中的应用

介绍了一种利用BP人工神经网络降低报警系统误报警率的有效方法。以STC89C52RC处理器为平台,在嵌入式系统中应用BP网络先对报警信息进行分析和预处理,再控制报警系统动作。该方法大大降低了报警系统因自然因素导致的误报警概率。采集了100个典型数据对BP网络进行训练,得到了适合应用目标的网络模型,现场实测误报警率几乎为0。该方法的硬件价格便宜,电路简单,是一种降低报警系统误报警率的有效方法。     

Petri网可达树的构造与实现

讨论了Petri网可达树的构造方法，给出了相应的算法和实现技术，对基于Petri网可达树的并发系统的动态性能分析具有一定的参考价值。     

基于S3C2410和Windows CE.net的智能移动终端设计研究

介绍S3C2410微处理器的性能以及Windows CE.net作为嵌入式操作系统的开发流程.阐述基于S3C2410芯片和Windows CE.net操作平台设计智能移动终端的具体流程及方法并给出硬件开发平台的结构框图.     

International Trade

Values of net oil imports(-)/exports for Austria, Belgium, Denmark, Finland, France, Germany, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, the United Kingdom, Japan, Canada, the United States and Australia. Updated on a monthly basis. Number of imports for Belgium, France, Germany, Greece, Republic of Ireland, Italy, Netherlands, Portugal, Spain, Sweden, the United Kingdom, and Other EU-15 (EU-15), Norway, Poland, Switzerland, Turkey, and Other Europe (OECD Europe), Canada, Chile, Mexico, and the United States (OECD Western Hemisphere), and Australia, Japan, Republic of Korea, New Zealand, (OECD Asia-Pacific), and Total OECED. Current data for Austria, Belgium, Finland, France, Germany, Greece, Italy, Netherlands, Portugal, Spain, Sweden, the United Kingdom, Other EU-15 (EU-15), Czech Republic, Hungary, Poland, Slovakia, Turkey, and Other Europe (OECD Europe), Canada, Mexico, and the United States (OECD Western Hemisphere), Australia, Japan, Republic of Korea, and New Zealand (OECD Asia-Pacific). Updated on a monthly basis. Current data for principal importers of natural gas and the amount in which they import from United States, Republic of Korea, United Kingdom, France, Japan, Italy, Germany and Spain (Table 19.1). Current data for principal exporters of natural gas and the amount they export to Canada, Trinidad and Tobago, the United States, Netherlands, Norway, Russia, Turkmenistan, Qatar, Algeria, Nigeria, Indonesia, Malaysia and Australia (Table 19.2). Updated on a monthly basis.     

International Trade

Values of net oil imports(-)/exports for Austria, Belgium, Denmark, Finland, France, Germany, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, the United Kingdom, Japan, Canada, the United States and Australia. Updated on a monthly basis. Number of imports for Belgium, France, Germany, Greece, Republic of Ireland, Italy, Netherlands, Portugal, Spain, Sweden, the United Kingdom, and Other EU-15 (EU-15), Norway, Poland, Switzerland, Turkey, and Other Europe (OECD Europe), Canada, Chile, Mexico, and the United States (OECD Western Hemisphere), and Australia, Japan, Republic of Korea, New Zealand, (OECD Asia-Pacific), and Total OECED. Current data for Austria, Belgium, Finland, France, Germany, Greece, Italy, Netherlands, Portugal, Spain, Sweden, the United Kingdom, Other EU-15 (EU-15), Czech Republic, Hungary, Poland, Slovakia, Turkey, and Other Europe (OECD Europe), Canada, Mexico, and the United States (OECD Western Hemisphere), Australia, Japan, Republic of Korea, and New Zealand (OECD Asia-Pacific). Updated on a monthly basis. Current data for principal importers of natural gas and the amount in which they import from United States, Republic of Korea, United Kingdom, France, Japan, Italy, Germany and Spain (Table 19.1). Current data for principal exporters of natural gas and the amount they export to Canada, Trinidad and Tobago, the United States, Netherlands, Norway, Russia, Turkmenistan, Qatar, Algeria, Nigeria, Indonesia, Malaysia and Australia (Table 19.2). Updated on a monthly basis.     

供水管网检漏技术研究进展

简要阐述了国内外供水管网检漏技术的发展现状,介绍了供水管网检漏仪器的发展过程,分析了国内外各种供水管网漏失检测方法及其优缺点,并对管网漏损控制理论进行了研究,从而提高管道供水管理水平,减少经济损失.     

清代四川城池的规模、空间分布与区域交通

根据《大清一统志》、雍正《四川通志》等志书中提供的有关清代四川城池资料，结合《四川州县建置沿革图说》中的历史地图，对城池的规模与空间分布、城池高度、区域交通网络四方面进行数据整理、分析和解读；绘制相应的图表和地图，并进一步阐释几者间的历史关联。