战术数据链组网方式分析

组网方式是设计战术数据链系统时要考虑的最基本的问题.就战术数据链的组网方式的特点和功能进行了分析,并在此基础上,进一步讨论了数据链系统的操作性能,主要是监视容量和循环时间的关系.     

短台阶弧形导坑法在浅埋大断面黄土隧道V级围岩段中的应用

浅埋大断面黄土隧道V级围岩段以往均采用双侧壁导坑法或CRD法进行施工，而这两种方法的施工进度都较慢，造价也较高。结合郑西客运专线高桥大断面黄土隧道在浅埋段采用弧形导坑法施工的成功实例，详细介绍该方法的施工工艺、变形特征、施工控制要点、变形控制基准值和施工体会。     

基于OBDⅡ系统监测信息的故障分析方法

第二代车载诊断系统——0BDⅡ系统是根据有关系列化标准、以诊断标准化为目的而开发的车载诊断系统。在概要介绍OBDⅡ系统功能、特点和监测机制的基础上，系统地论述了应用故障码和检测数据进行故障诊断的原理、条件与步骤。     

DGS8800e数字调速器功能原理剖析

通过系统框图,剖析ＤＧＳ８８００ｅ数字调速器各主要环节的作用功能,并深入了分析了系统的转速调节原理。     

Road Pricing models with maintenance cost

According to the Federal Highway Administration of the United States, maintenance expenditure takes up more than 25% of road revenue disbursement and this percentage has been increasing gradually. The reason for the increment in maintenance cost is that there lacks incentives for road users to take this cost component into their driving behavior. That is, different classes of vehicles should be levied different levels of congestion tax due to the different degrees of damage on the highway if a road pricing policy is implemented. This paper intends to incorporate this concept into road pricing literature by introducing two types of vehicles. After the analysis of the problem, we find that different types of vehicles should be charged different tolls. The toll includes not only the travel delay cost of one's own vehicle and the other types of vehicles, but also the marginal maintenance cost that is dependent on the traffic flow. A set of numerical examples is provided to demonstrate the theoretical analyses. The result shows that both the welfare and cost coverage rate will increase when the road pricing mechanism takes the maintenance cost factor into account.     

The analysis of regulation on private highway investment under a build-operate-transfer scheme

The build-operate-transfer (BOT) approach has become an attractive instrument for public facility provision, especially for a project that faces difficulty with public finance. This study analyzes the regulation alternatives on private highway investment under a BOT scheme and their impacts on traffic flows, travel costs, toll, capacity, and social welfare (total user-benefit in the traffic system including congestion). For comparison, five cases are analyzed: (1) No BOT with maximizing welfare, (2) No BOT with breaking even on finance, (3) BOT without regulation, (4) BOT with a minimum flow constraint (the total users will not be less than those in Case 1), and (5) BOT with a maximum travel cost constraint (the travel cost for users on a non-tolled road will not exceed the maximum tolerance). After each case is modeled and simulated on some functional forms, we find that the case of BOT with regulations performs between the cases of maximizing welfare and that of maximizing profit. From the perspective of the government, regulation has less power in a project with low elastic demand. Furthermore, even when the regulation is strict, a high cost-efficient firm with BOT could result in a higher level of social welfare than that without a BOT scheme.     

应用PCR方法检测人乳头瘤病毒的E_7转化基因

应用聚合酶链反应技术（ＰＣＲ）检测５４份子宫颈癌活检标本中人乳头瘤病毒１６型（ＨＰＶ－１６）Ｅ７转化基因的存在情况，结果显示阳性率为７２．２％（３９／５４）。ＨＰＶ－１６Ｅ７转化基因在人子宫颈癌组织中的高检出率，证实该转化基因与其发生关系密切。本研究同时证明，ＰＣＲ方法具有敏感、特异、快速和实用特点，值得推广。     

公路工程中软基的鉴别和处治

针对公路工程中难以确定软基变更的问题,阐述了试验数据分析的方法及规律。从工程施工实际案例中总结了鉴别软基的有关要点,通过比较各种软基处治的运用特点,探讨了软基鉴别方法与施工技术。     

氰基桥联配合物的溶剂热合成研究进展

介绍了以MCN（M=Na,K）和K3[M’（CN）6]（M’=Fe,Co）为氰基来源的氰基桥联配合物溶剂热合成的研究进展。讨论了影响溶剂热合成氰基桥联合物的主要因素,如：反应条件、有机配体、氰基来源、平衡离子、溶剂种类及摩尔比等．最后指出了目前存在的问题,并对今后的研究趋势进行了展望．     

宜巴高速公路界岭隧道横洞进正洞挑顶施工方案比选

宜巴高速公路界岭隧道施工中,由于复杂的地质状况和处理坍塌历时过长,整个隧道工程严重滞后建设项目工期。因此,决定增设横洞,从横洞向正洞掘进,增加主洞工作面,以满足项目建设进度要求。文章详细介绍了增设横洞两种方案的施工工艺,在技术可行、经济合理基础上,针对界岭隧道横洞垂直贯穿进入正洞和曲线渐变过渡施工转入正洞的施工方案进行了分析对比。