城市轨道交通规划与城市规划的互动关系

随着我国经济的飞速发展,城市化的进程也逐渐加快,城市交通作为城市发展的保障,已成为人们关注的热点问题。城市内的交通与农村相比,发展速度快,车辆增加多。那么,发展公共交通,特别是轨道交通,对于整个城市的发展意义重大。轨道交通的发展,合理的规划是前提,要把城市规划与轨道交通规划有机结合,使整个城市的发展健康有序,促进综合实力的提升和经济水平的发展。该文对城市轨道交通的规划及城市规划进行了阐述,并研究二者之间的互动关系,为今后的城市发展及轨道交通事业提供理论参考。     

苏州轨道交通沿线公交效能发挥的AHP评价模型

本文以苏州轨道1号线的四个综合换乘枢纽为研究点,通过降低问题复杂度,提高问题针对性,构建了轨道交通沿线公交效能发挥的评价指标体系,依据调查数据建立AHP综合评价模型.得出的结论与苏州轨道交通运行现状相吻合,进一步验证了本文研究方法的正确性,并对结果成因进行较为详尽的分析后,提出改进建议,为苏州轨道2、3、4号线的运行效能评价提供参考的依据.     

关于城市快速轨道交通振动评价量的探讨

对城市快速轨道交通建设项目环境影响评价及竣工环境保护验收中所采取的环境振动评价量VLzmax及VLZ10进行了理论分析和实际测量检验，根据《城市区域环境振动测量方法》中规定的“测量量及读数方法”，参照铁路振动评价量提出了以VLzmax评价城市快速轨道交通环境振动的建议。     

轨道交通车辆车体结构材料轻量化产业发展及展望

近年来,我国轨道交通产业发展迅速,从2004年高铁技术引进和启动以来,中国轨道交通发展迅猛,以市场换技术的同时进行战略性投标,完成了对于高端制造技术的“引进、消化、吸收、再创新”的过程。《“十三五”国家战略性新兴产业发展规划》明确提出,轨道交通装备产业要持续以智能、绿色、轻量为目标,坚持系列、标准、平台化发展,不断加快新技术、新工艺、新材料的应用,研制系列化优质产品,完善轨道交通产业的技术标准体系和产业创新体系。     

轨道交通网络首级控制网布设方法探讨

结合广州市轨道交通工程2010年规划线路三等平面控制测量工程,探讨轨道交通网络首级控制布设方法以及需要注意的一些问题。     

浅谈轨道交通企业的信息化规划

随着信息化在轨道交通企业的应用越来越广泛,实施越来越复杂,信息化规划的重要性就逐渐凸显。本文针对轨道交通企业信息化规划的问题进行探讨,从行业特点、信息化市场现状等角度强调了信息化建设进行事前规划的必要性。同时,论述了以需求为导向的信息化规划对轨道交通企业的战略性意义以及如何科学规划企业信息化。     

城市高架轨道交通体系振动与噪声控制

高架轨道交通的振动与噪声问题是建设高架轨道交通的最大障碍,能否将振动和噪声控制在允许范围内,避免形成城市又玫公害已成为高架轨道交通在城市可行与否的关键,本文分析了城市轨道车辆在运行过程中产生振动与噪声的原因,并从振源与噪声源、振动与噪声传播途径及振动与噪声随物三个方面,综合阐述了可以采取的各种减振降噪措施,可为今后我国城市高架轨道交通体系振动与噪声控制研究提供参考。     

基于卓越绩效标准下的轨道交通管理提升研究——以合肥轨道交通运营为例

本文通过引入卓越绩效评价准则和实施指南，介绍合肥市轨道交通集团有限公司运营分公司卓越绩效管理模式导入背景、实施举措和建设成效，通过强化领导作用、加强战略管理、提升关系管理、识别关键过程、构建绩效体系，经过全体员工的不懈努力，公司关键指标显著提升、综合实力显著增强、社会影响日益扩大，轨道交通运营管理水平和管理能力提质增效，切实丰富了卓越绩效理论内涵，对系统研究我国轨道交通行业卓绝绩效标准具有一定的实践意义和参考价值。     

微模块机房在轨道交通的实践应用

该文以轨道交通的应用为例，阐述了微模块机房的建设目标，详细介绍了微模块机房的系统构成和特点，并经过现场实践总结了微模块机房的特点。该应用有效地解决了传统数据中心机房建设周期长、耗资成本大、场地利用率低、运行能耗高和运营难度大的问题，可以为轨道交通工程建设提供经验，从而提高工程项目建设的标准和水平。     

轨道交通车辆牵引控制技术与发展趋势

近年来,我国轨道交通车辆技术发展速度不断加快,在轨道交通技术中,牵引控制技术为轨道车辆提供动力,有关轨道交通车辆牵引控制技术的研究有很多,相关专家希望通过改善轨道交通车辆的牵引控制技术,促进我国轨道交通体系的进一步发展。该文主要探讨了轨道交通车辆牵引控制发展现状与趋势。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

The Research of Anti-Wear Properties of Organomolybdenum Compounds in the Engine Oils

A four-ball tester was used to evaluate the anti-wear performance of three kinds of organomolybdemun compounds in the engine oils, i. e., molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate ( MoDTC), and sulphur and phosphorus freeorganomolybdeum (Molybdate). The results indicate that a low concentration of MoDDP doesn' t improve the anti-wear properties of the commercial engine oils, but a high concentration of MoDDP can obviously improve the anti-wear properties and the load-carrying capacity of the engine oils. MoDTC doesn' t improve the antiwear properties of the engine oils, but worsens the anti-wear properties of the oils. Signifi can timprove ment of frictional and wear characteristics is obtained with Molybdate added in the commercial engine oils and the formulated oils.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

A study of centrifugal cast high boron high speed steel

In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M₂(B,C), (W,Mo)₂(B,C), M₃(B,C), M₂₃(B,C)₆ type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm². The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K₁ mill housing of bar mill.     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

Certification Becomes Important for the I Quality; and Safety Supervision of the Chinese Liquor Sector

The end of 2007, over 200 unit products of more than 80 Chinese firms have passed the quality grade certification for liquor products. These products involve distilled spirits, beer, wine, yellow wine, fruit syrup wine and others, and cover over 80% of the national top-branded liquor products.……     

Deposition and Coating Properties on CVD Tungsten

Surface characterization and microstructure studies are performed on chemical vapor deposited (CVD) tungsten coating. There is about 2 μm thickness diffusion layer of tungsten in the molybdenum substrate. The thermal shock test shows tungsten coating has good adhesion with molybdenum substrate, but the elements of oxygen and carbon in the tungsten coating have the bad affection to the adhesion. The result of high-temperature diffusion experiment is the diffusion rate from molybdenum substrate to tungsten coating is faster.