中文论文格式要求(样本).doc

中文论文格式要求（样本）基于神经网络理论的系统安全评价王三明 蒋军成 （南京工业大学安全工程研究所，江苏，南京，210009）摘 要：本文阐述了人工神经网络基本原理，研究分析了BP神经网络模型的缺陷并提出了优化策略。在此基础上，将神经网络理论应用于系统安全评价之中，提出了基于此理论的系统安全评价模型关键词：神经网络 网络优化 安全评价SAFETY ASSESSMENT OF THE SYSTEM BASED ON THE ARTIFICALNEURAL NETWORKAbstract: In the article the theory of ANN has been introduced. At the same time some limitations of BP neural network have been analyzed and optimized methods have been supposedKeywords: Neural Network; Network Optimization; Safety Assessment1 引言人工神经网络模拟人的大脑活动，具有极强的非线形逼近、大规模并行处理、自训练学习、自组织和容错能力等优点，将神经网络理论应用于系统安全评价之中，能克服传统安全评价方法的一些缺陷，能快速、准确地得到安全评价结果2神经网络理论及其典型网络模型人工神经网络是由大量简单的基本元件-神经元相互联结目前在模式识别中应用成熟较多的模型是前馈多层式网络中的BP反向传播模型，其模型结构如图1。输出层输入层隐层输入量Xi隐层输出量Oj输出层输出量Yk图1 典型BP网络结构模型2.1 BP神经网络基本原理 BP网络模型处理信息的基本原理是：输入信号Xi通过中间节点（隐层点）作用于输出节点，经过非线形变换，产生输出信号Yk3安全评价实例（1）安全评价参数的确定（3）评价结果当学习因子h=4.07，动量因子a=0.2，预设误差为0.00001，单隐层，其隐节点数为L=9，模型迭代29254次，所得到的网络评价的结果见表2。表2 企业神经网络安全评价结果安全评价参数网络安全评价结果企业1企业2企业3企业4企业51-0.5-1.50.51.50.52-1.50.5-0.50.51.53-0.50.50.5-0.51.54-1.5-0.5-0.50.50.550.50.51.5-1.50.56-0.5-0.50.51.51.5安全状况-1.5-0.50.50.51.5差可接受好好非常好 4 结束语本文将优化后的BP神经网络应用于系统安全评价中，能对系统进行准确、动态的安全评价 参考文献1 王俊普.智能控制.合肥:中国科学技术大学出版社,1996,1351772 施式亮,刘宝琛.基于神经网络的煤矿安全性预测模型及应用.中国安全科学学报,1999,l9(3):3437英文论文格式要求（样本）Experimental Study of Water Sprays Effect on Gas Flame PropagationXI Yuhai & SEN Xi-an (Department of Mechanics, University of Science and Technology , Xian 710000,China)andQI Shuxia , HANG Li & ZU Ruru(Department of Chemical Engineering, Henan stitute of Technology, Zhengzhou 450000,China)Abstract: The influence of water sprays on gas flame propagation was experimentally studied. The present results suggest that the mitigating effect ofKey words: explosion; flame propagation; water sprays1 IntroductionThe effectiveness of water as a fire-fighting agent is universally recognized and water sprays are widely used in protecting structures and against fire. Recently, researchers have again focused on studying water sprays as a means of mitigating gaseous explosions152 Experiment Obstacles zoneGas supplyManometerDAS-820M data recorderPhototriodesSpark ignitorFTWater spraysA 1480-mm-long, 8989-mm-quadratic cross, horizontal FAT (flame acceleration tube) closed at one end was used (Fig. 1) Fig. 1 Apparatu3 Results and Discussion Fig.3 Ralationship Fig.3 shows that, before the flame burns into the water sprays zone, the flame speeds with no spray areTable 1 The optimization resultsMethoThe highest /mmThe minimum /mmscenario543442prophase569364anaphase6785114 ConclusionsThe self-developed experimental system, the flame acceleration tube setup is valuable for the further study of the effectiveness of water spray on quenching gas flame. The present tests have demonstrated that water sprays can References1. Thomas G O, Edwards M.J, Edwards D H. Influence of Water Spra 附：参考文献著录内容要求及示例1 专著、书籍【著录格式】序号 主要责任者. 书名. 其他责任者（如编者、译者，供选择）. 版本（第1版不写）. 出版地: 出版者, 出版年. 页码Bird R B, Stewart W E, Lightfoot E N. Transport Phenomena. New York: John Wiley & Sons Inc, 1960. 752 期刊【著录格式】序号 析出责任者. 析出题名. 刊名, 出版年, 卷号（期号）: 起止页码Henry R C, Lewis C W, Collins J F. Vehicle-related hydrocarbon source compositions from ambient data:the GRACE/SAFER method. Eniron Sci Technol, 1994, 28(5): 8238323 会议论文集（或汇编）【著录格式】序号 析出责任者. 析出题名. 见（英文用In）: 文集编者（英文姓名后加ed或eds）. 文集名. （供选择项：会议名，会址，开会年.）出版地: 出版者, 出版年. 起止页码Ma Tingxi, Lu Xueshu. Computer aided analysis of the penetration of mounted tillage implement. In: Zhang Wei, Guo Peiyu, Zhang Senwen eds. Agricultural Engineering and Rural Development: Vol I. Beijing: International Academic Publishers, 1992. 1571604 学位论文【著录格式】序号 责任者. 题