基于神经网络的道路季节分类

为了合理确定路面结构设计时的输入参数,引入自组织特征映射神经网络,结合Matlab软件对神经网络进行权值训练,将网络训练是否收敛来作为分类的依据,根据温度、交通量和降雨量等几个重要参数对道路进行季节分类,最后按照分类结果进行路面结构分析与材料设计.实践证明,该方法分类效果良好,能很好地解决路面设计参数的合理确定问题,从而大大延长路面的使用寿命,提高道路投资的经济效益.     

浅析旧沥青路面的再生利用

文章介绍了旧沥青路面的铣刨、就地冷再生、厂拌冷再生的施工程序及注意事项.     

河南平顶山市经济发展与税收关系的数理分析

依据协整和多元线性回归理论,分析了平顶山市1988—2006年经济发展和税收的关系,建立了GDP对税收影响的关系模型;并在考虑其它因素的情况下,给出了GDP和税收相互关系的长期均衡模型,对于调整现行税负、促进经济稳定增长提供了科学的理论依据.     

温籍数学家群体

自20世纪初至中叶,在中国浙南的温州地区,先后孕育和涌现了为数众多卓有成就的数学家和数学教育家.温州因此被人们美称为"数学家之乡".现代温籍数学家群体的出现,是中国现代数学史中引人瞩目的事件,也是近代国际数学史上一种罕见的现象.     

对加强高校群体组织工作促进校园体育文化建设的研究

体育文化是校园文化的一个重要部分.群体工作是校园体育文化建设的重要组成部分,文章通过对学校群体工作的研究,探索出高效的群体工作的有效模式.     

班级管理中暗示的妙用

在班级管理中,采用"暗示法"对学生不产生心理压力,不强求学生接受,但能产生积极的、主动的影响,起到潜移默化的作用.     

Modeling and Experimental Study of PEM Fuel Cell Transient Response for Automotive Applications

This paper presents an analysis of the dynamic response of a low pressure proton exchange membrane (PEM) fuel cell stack to step changes in load, which are characteristic of automotive fuel cell system applications. The goal is a better understanding of the electrical and electrochemical processes when accounting for the characteristic cell voltage response during transients. The analysis and experiment are based on a low pressure 5 kW proton exchange membrane fuel cell (PEMFC) stack, which is similar to those used in several of Tsinghua's fuel cell buses. The experimental results provide an effective improvement reference for the power train control scheme of the fuel cell buses in Olympic demonstration in Beijing 2008.     

Proteome changes in the plasma of Papilio xuthus (Lepidoptera: Papilionidae): effect of parasitization by the endoparasitic wasp Pteromalus puparum (Hymenoptera: Pteromalidae)

Although the biochemical dissection of parasitoid-host interactions is becoming well characterized, the molecular knowledge concerning them is minimal. In order to understand the molecular bases of the host immune response to parasitoid attack, we explored the response of Papilio xuthus parasitized by the endoparasitic wasp Pteromalus puparum using proteomic approach. By examining the differential expression of plasma proteins in the parasitized and unparasitized host pupae by two-dimensional (2D) electrophoresis, 16 proteins were found to vary in relation to parasitization compared with unparasitized control samples. All of them were submitted to identification by mass spectrometry coupled with a database search. The modulated proteins were found to fall into the following functional groups: humoral or cellular immunity, detoxification, energy metabolism, and others. This study contributes insights into the molecular mechanism of the relationships between parasitoids and their host insects.     

企业员工的同化管理——浅谈传化集团的员工培训

在竞争日趋激烈的知识经济时代，企业职工时本企业文化的理解与认同越发显得重要。文章从企业文化的内涵入手，通过分析传化集团的员工培训方法，对企业文化的管理提出具体要求。