企业经济效益的因子分析综合评价法研究

针对我国企业经济效益的实际，以多元统计分析中的因子分析方法为数学工具，建立了综合评价的数学模型，对样品数据进行了分析，文章为企业经济效益的评价及探索其影响因素，提供了一种切实可行的有效的方法。     

博格板底座板施工

文章主要就铁路工程引进德国博格板技术底座板施工的关键工序进行实例介绍和说明,指出了铁路工程在国民经济发展过程中的重要性.强调了铁路工程必须进行科学、合理的施工.     

神经网络反向传播模型用于CmI的能级分类

将神经网络反向传播算法应用于Ｃｕｒｉｕｍ的关于组态的分类计算。用４个特征变量（能级值、郎德ｇ日子、Ｊ量子数和同位素位移）表征每一个能好。为检验神经网络预报能力，采用ｌｅａｖｅ－ｎ－ｏｕｔ方法（奇宇称ｎ＝１，偶宇称ｎ＝５）对所有已知实验样本进行了预报。其中奇、偶宇称能级预报正确率分别为９２．７％和９７．４％。利用相同的神经网络结构，得到了１２个奇宇称和４２个偶宇称的未知能级的预报结果。     

具有LOTS因子的积空间的正交紧性

本文证明当x是点有限仿紧空间时,x与一个核为K的线性序拓扑空间的乘积是正交紧的充要条件是x的正交口径为K,该结果推广了文[1]的一个主要结果,在此基础上,我们给出了点有限仿紧空间与局部紧线性序拓扑空间乘积正交紧性的一个刻划。     

Simulation Modeling by Fuzzy Nets

Fuzzy technology is a newly developed discipline based on fuzzy mathematics. In the recent years, it has been successfully applied into many areas, such as process control, diagnosis,evaluation, decision making and scheduling, especially in simulation where accurate mathematical models can not or very hard be established. In this paper, to meet the demands of fuzzy simulation, two fuzzy nets will first be presented, which are quite suitable for modeling the parallel or concurrent systems with fuzzy behavior. Then, a concept of active simulation will be introduced, in which the simulation model not only can show its fuzzy behavior, but also has a certain ability which can actively perform many very useful actions, such as automatic warning, realtime monitoring, simulation re-sult checking, simulation model self-adapting, error recovery, simulating path tracing, system states inspecting and exception handling, by a unified approach while some specified events occur. The simulation model described by this     

AIP系统吸收器传质系数实验关联模型研究

通过对不依赖空气动力装置（AIP）排出CO2气体旋转床水吸收体积传质系数（Kla）的理论分析及实验研究，得到了波纹碟片填料旋转床吸收器Kla的半径验关联模型，该模型计算值与实验值相对误差小于20％，可用于实际AIP系统旋转床CO2吸收器的设计计算。实验结果表明，Kla值与旋转床的转速和气、液流量等操作条件有关，当转速从0r/min升高到1000r/min时，Kla值从0.02s^-1增大到0.30s^-1以上。     

A Survey of Web Information Systems and Applications

0 IntroductionWiththe rapid development of Internet , more and more Webinformation systems and applications are emergingand alot of newchallenges have beenrising and some open problems needto be solvedfromthe academic andindustrial points of viewintheseresearchareas .To meet the needs of sharingandexchangingresearchachievements anddevelopment experiences fromboth academic andindustry communities ,the Office Automation and Electronic Govern-ment Society of China Computer Federation(CCF) ha…     

视觉皮层中线条检测器的改进算法及应用

在简单细胞的视觉模型基础上，提出一 线条检测器的改革算法，该算法利用边缘检测器与线条检测器在形状和功能上的和两个方向相反的边缘检测器来实现线条检测器，避免了传统有不同宽度线条的骨架的提取，并且在指纹识别、字符识别等研究领域有着广泛的应用前景。     

过载列60Si_(2)Mn钢弯曲疲劳性能的影响

对60Si2Mn钢的弯曲疲劳性能进行了研究．考察了拉伸过载和压缩过载对其弯曲疲劳行为的影响规律．并用扫描电镜对疲劳断口进行了观察和分析．结果表明，周期性的拉伸过载可以延长弯曲疲劳寿命，而周期性的压缩过载则缩短弯曲疲劳寿命．