II 型大城市轨道交通发展的 几点思考与建议

针对当前城区人口规模在 100 万～300 万之间的 II 型大城市在轨道交通规划审批及建设实践中存在的问 题,深入剖析 II 型大城市轨道交通现实发展中面临的客流需求与社会经济、被动追赶与提前谋划、系统制式与敷 设方式 3 大困惑,从客观认识交通需求、准确把握功能定位、合理确定线网层次和规模、选择适宜的敷设方式和 系统制式、多元化的运营组织模式等方面提出若干建议,为部分自身财务能力允许,并且城市用地形态特殊、人 口集聚程度较高、交通拥堵严重的 II 型大城市的轨道交通长期健康发展提供借鉴。     

山西中南部大能力铁路对外通道的融资和建设模式

山西中南部大能力铁路对外通道连接山西、河南、山东三省,横跨南同蒲、太焦、京广、京九、京沪五大铁路干线,不同的融资建设模式对于项目建成后路网功能的发挥及沿线地区的发展,促进很大。此文按照项目功能的基本定位,结合沿途省区的基本需求,指出耗费社会大量资源的长大铁路干线项目的建设应在满足基本功能的基础上,以发展的、符合长远社会经济利益的、致力于建设和谐社会的理念原则,实现国家整体利益的最大化。     

汽车车轮定位快速检测设备的研究

汽车车轮定位快速检测设备能够检测车轮前束角、车轮外倾角、主销内倾角、主销后倾角,填补了车轮定位快速检测的空白.该设备可以将一次检测的时间由原来的S30min～50min缩短到5min～10min,为汽车综合性能检测提供了一种准确、方便、快速的检测设备.汽车车轮定位快速检测台,解决了"大中型汽车在汽车检测线不能够快速检测车轮定位参数"的难题.并突破了传统汽车车轮定位仪不能进行通过式测量汽车车轮定位参数的关键技术,推动了汽车检测技术的进步.     

高强度钢对车体侧面抗撞性影响的研究

对一汽某轿车侧面碰撞安全性进行研究,确定了车体侧部高强度钢板的位置分布和特性分配,进行了仿真分析和整车碰撞试验,使其满足国家标准,并总结出高强度钢板对车体侧面抗撞性的影响,为进一步深入研究整车侧撞特性奠定了基础.     

Real-time estimation of road–tyre adherence for motorcycles

Improving braking skills of a rider supported by a real-time training device embedded in the motorcycle represents a possible strategy to deal with safety issues associated with the use of powered two wheelers. A challenging aspect of the braking trainer system is the evaluation of the adherence between tyre and road surface on each wheel. This paper presents a possible method to evaluate the current and maximum adherence during a braking manoeuvre. The proposed approach was positively validated through multi-body simulations and experimental data acquired in naturalistic riding conditions.     

Stability and performance analysis of a full-train system with inerters

This paper discusses the use of inerters to improve the stability and performance of a full-train system. First, we construct a 28 degree-of-freedom train model in AutoSim, and obtain a linearised model for analysis in Matlab. Then, the benefits of inerters are investigated by the critical speed, settling time and passenger comfort. In addition, we apply a new mechatronic network for further performance improvement, and synthesise the optimal electrical circuit for experimental verification. From the results, inerters are shown to be effective in improving the stability and performance of train systems.     

《白虎通义》声训的价值与不足

《白虎通义》的声训在训诂学史上有一定的地位和影响。其声训有助于音韵学研究，有助于推求语源，有助于系联同源词，有助于破假借；但也存在很多不足。文章对《白虎通义》声训的学术价值和不足之处作了简要的分析。     

汽车碰撞预判系统关键技术分析

介绍了碰撞预判技术及其通用的系统设计方案,着重从该系统所用雷达系统的研发、新式被动安全装置的优化与应用以及系统集成3个方面详细分析了其中的关键技术,并指出了当前发展碰撞预判系统的时机与光明前景.     

Effect of LaNiO3 interlayer on the dielectric properties of Ba0.5Sr0.5TiO3 thin film on Si substrate

In this study, (100)-oriented growth of Ba_0.5Sr_0.5TiO₃ (BST) /LaNiO₃ (LNO) stacks was obtained on Pt(111)/SiO₂/Si substrates by r.f. magnetron sputtering. The orientation of the subsequently deposited Ba_0.5Sr_0.5TiO₃ thin film was strongly affected by the LNO under layer, and the BST thin film deposited on the (100)LNO-coated Si substrate was also found to have a significant (100)-oriented texture. Effects of LNO interlayer on the dielectric properties of BST thin films were investigated. As a result, the tunability of BST thin film was greatly improved with the insertion of (100)-oriented LNO under layer with proper thickness. Foundation item: the National Key Lab of Nano/Micro Fabrication Technology (No. 9140C 790310060C79) and the National Natural Science Foundation of China (No. 60701012)     

论《新生》周刊抗日救亡思想的大众性

“九一八”事变后，中日民族矛盾上升为主要矛盾，而国民党蒋介石奉行不抵抗政策，在这种背景下，社会各界积极投身于抗日救亡运动，《新生》周刊作为一份较有影响的抗日救亡进步刊物，通过揭露和批判日本帝国主义对我东北的侵略罪行，抨击国民政府的妥协政策，号召大众抗日，表现出相当的战斗力。《新生》周刊实际上反映的是在民族资产阶级中间派中，分化出来的进步势力的救国思想和主张。