模糊综合评价法在危险化学品道路运输风险评价中的应用

采用科学合理的评价方法来评估危险化学品道路运输的安全风险程度，对提高道路运输的安全管理水平具有十分重要的现实意义。引入了模糊综合评判的方法，结合事故树分析确定事故发生的可能性；并将数学计算模型与模糊综合评价方法相结合，从人员伤亡、财产损失、影响范围、环境影响、信誉损失5个方面量化事故后果严重度，建立一套完整的危险化学品道路运输的风险评价体系。并通过实例说明该方法的可行性。     

鉴别高速公路事故多发路段方法

随着高速公路快速发展，交通安全事故逐年增多，加强道路安全研究、预防和减少交通事故显得十分必要。交通事故由于受道路状况、交通量、交通环境等条件影响，在高速公路上分布具有不均匀性。本文探讨高速公路事故多发段鉴别方法，选取累计频率法并对该方法进行修正．结合某高速公路上分布具有不均匀资料进行分析，验证该方法的合理性和准确性，为改善道路安全运营环境，减少交通事故的发生，以及高速公路事故多发路段鉴别方法的研究有借鉴意义。     

公路建设中新理念的应用进展

从传统公路设计理论出发，结合我国公路设计规范的实际应用，我国公路建设走出了一条“人性化、生态环保”的新路。汲取欧美关于路侧设计指南和道路安全审计等要点，将人性化公路设计理念归纳为动态理念、协调理念、安全理念和容错理念，旨在从公路设计阶段完善道路本身的服务功能，更好地满足人们出行的需要。     

连续重整装置工程施工管理中的质量与安全

阐述了连续重整装置工程的概况、特点及难点，其质量控制目标：质量合格率达到100％，优良率达到85％以上。安全（HSE）控制以人为本、安全第一、预防为主、科学管理、环保创优、健康至上，全面提高经济效益、社会效益、环境效益，走良性循环和可持续发展的道路。努力实现安全管理零事故；施工生产无环境污染事故，项目评价及经验分享。     

发展高速公路交通安全审计的探讨

基于高速公路建设项目投资的全过程，对高速公路交通安全审计内容、预通车阶段及运营阶段的审计清单、安全审计量化方法进行了初步探讨，指出安全审计是一种节约投资、预防交通事故发生、判断潜在事故因素的有效方法，对提高高速公路交通安全性具有积极作用。     

山区公路危险路段（点）鉴别方法探讨

针对目前山区公路危险路段（点）的鉴别方法较少的情况,在分析山区公路交通事故与道路条件之间的关系及现有事故多发路段鉴别方法的基础上,提出了当量事故数鉴别指数非定长分段法,对山区公路危险路段（点）进行鉴别。最后选取云南省昆明至石林高速公路进行了实例验证,验证结果表明,该鉴别方法合理有效,为道路安全审计提供了理论和技术支持。     

市场经济与我国审计模式的选择

从对我国审计历史的回顾，西文审计的发展中得出一个结论：审计的产生是基于经济监督的需要，审计的发展是由于生产力和经济关系的变革，审计模式和经济体制结构密切相联，结合目前的现状及我国经济的走势，我国必然要走国家审计，社会审计，内部审计三元主体的协同发展的道路。这样，才有利于审计监督体系的健全与完善，有利于解放生产力，为市场经济的发展服务。     

高速公路隧道群交通事故分布特点及预防对策

针对中国高速公路隧道交通事故问题突出的特点，根据高速公路隧道的道路及交通环境特性，对北京一珠海（京珠）高速公路韶关段隧道群交通事故的统计资料进行分析，提出了交通事故的时间分布、空间分布、事故形态和事故车辆组成特征；结合隧道出入口处和隧道内的通风、照明和道路特征对交通的影响，进行了交通事故多发段的成因分析，从而给出了控制和减少高速公路隧道群交通事故的相关对策。     

Linux内核级审计系统的设计与实现

审计主要用于记录系统的活动，是定位系统事故原因的强有力的依据，是安全操作系统的重要组成部分。Linux原有应用级的审计机制存在安全方面的缺陷，为此给出了一种基于Linux的内核级审计系统的设计与实现。该审计系统中的审计数据均在内核中采集，数据内容及格式符合PoSIX．le标准，并研究了保护审计系统自身的安全性的问题。     

事故致因本质剖析及理论建模研究

为明晰事故致因本质、促进安全科学基础理论的发展，基于已有事故致因体系和SOC理论，采用“正向构建”范式，构建以能量和信息为主线的C-EI-C模型。从微、中、宏系统自组织演化和它系统被组织演化4个阶段介绍了系统演化过程，并延伸了模型内涵，阐述其功能与价值。研究表明：将能量与信息结合是安全科学研究的一种新思路，新模型明确了事故致因本质，揭示了完整的事故致因机理，为事故预测提供了科学依据，从而真正做到事故的超前预防。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

英文诗歌中的喻类修辞

为了有助于提高英文爱好者的个人情操、文化素养和学习兴趣,以及专业人员对英语学习和研究进行多途径的探索,本文通过一些精选诗歌的引证和分析,着重论述了喻类修辞法在英文诗歌中的运用其及效果。     

Man Is Unable to Change the Miserable Life——Analysis of the Arrangement of Four Characters in The Glass Menagerie

Tennessee Williams is considered as one of the most important American playwrights since World War II.The Glass Menagerie is his first successful drama,which describes a tragic situation of family and means to say that Man is unable to change the miserable life,no matter whatever means he try,This essay focuses on the analysis of the arrangement of the four main characters:Laura.Amanda,Jim and Tom to reveal the theme.Laura is fragile.Amanda is brave.Jim is vital.Tom is sensible.And all of them develop and try the different means to struggle against life,but fail tragically.With the evidence,the paper comes to conclusion naturally that Man is unable to change the miserable life,and he dooms to fail.     

Characterization of root-nodulating bacteria on Retama raetam in arid Tunisian soils

The aim of this study is to investigate the diversity of Retama raetam root-nodule bacteria isolated from arid regions of Tunisia. Twelve isolates, chosen as representative for different 16S rRNA gene patterns, were characterized by 16S rRNA gene sequencing and phenotypic analysis. Isolates were assigned to Sinorhizobium, Rhizobium and Agrobacterium. Symbiotic properties of Sinorhizobium and Rhizobium isolates showed a large diversity in their capacity to infect their host plant and fix atmospheric nitrogen. Strain RK 22 identified as Rhizobium was the most effective isolate.     

An Affordable Accurate Evaluation of the Binding Conformations Predicted by Molecular Docking Studies in Bio-System

正Recently,docking has been widely used to predict the binding-modes of protein-inhibitors,when the crystal complexes structure was absent.Most docking algorithms are able to generate a large number of probable conformations,it,however,is difficult to effectively evaluate these docking poses and identify the most reasonable bindingmode.In the present study,on the basis of the crystallographic data of human 3-hydroxy-3-methylglutaryl coenzyme     

WIMAX与WI-FI技术分析及联合组网

介绍了WiMAX与Wi-Fi两种无线宽带接入技术,并对两者之间的关系及相互之间的影响做了对比及分析,并对WiMAX的关键技术进行了详细说明,最后对两者的联合组网方式做了简单的探讨。