Dynamic model for ride comfort evaluations of the rubber-tired light rail vehicle

The dynamic model was developed to evaluate vibration accelerations and ride comforts during the running of the Korean-standardised rubber-tired light rail vehicle. Ride comfort indexes were analysed and tested in accordance with UIC 513R by using the dynamic model and the actual vehicle in the test track. Based on the comparisons between analysis results and test results, the validity of the developed dynamic model was evaluated. It was verified whether or not the developed Korean-standardised rubber-tired light rail vehicle met the specified target specification on ride comfort. In addition, the influence of the wearing of guide wheels on ride comfort was estimated.     

洞新高速公路岩溶路基处理工程实例

在分析总结国内外相关研究成果的基础上,基于洞新高速公路现场施工处治经验,开展现场变形预测分析,总结提出适用的溶洞路基施工处治技术,并采用有限元计算与理论分析相结合的方法,对加固效果进行分析。     

隧道数字化火灾预警系统的在线量化评估

为检查和评价隧道及地下空间火灾预警系统的实际功能,需要一套可行的在线评估手段。根据近年来国内外全尺寸隧道火灾发展曲线的试验结果,提出隧道火情的定义依据;引用运营隧道内准分布式光纤光栅感温火灾探测器的实测数据,证明运营中隧道报警系统的个性化现象;提出合格的数字化报警系统应存在一个在统计学意义上使漏报率和误报率同时达到期望值的合理阈值取值区间;建议以该区间的尺度作为该系统功能完好性的评估指标;对日常隧道运行温度数据的统计分析可估计合理阈值取值区间的下限,对规定条件下的现场点火试验温度数据分析可估计合理阈值取值区间的上限。在隧道运营期该区间尺度可实时在线自动更新。     

门座式起重机箱形大拉杆焊接变形与控制分析及其在生产中的应用

分析门座式起重机箱形大拉杆焊接变形的分析,采用合理的组装顺序和焊接工艺,有效地控制箱形大拉杆的焊接变形.     

A preliminary proposal for urban and transportation planning in response to the Great East Japan Earthquake

The purpose of this paper is to propose information of use in the reconstruction of urban transport and infrastructure in response to the Great East Japan Earthquake. In particular, knowledge of urban planning and transportation planning is summarized to help in drawing up physical plans.     

探讨模拟数学在学术论文搞质量综合评价中的应用

首先提出，目前仍采用三审制，以语言设计院评价学术文稿质量，其结果模糊，缺乏量化、缺乏稿件之间的可比性，还受到评价人人为因素的影响，有失公正性，探讨应用模糊数学方法评价论文稿质量的可行性，介绍同属模糊数学范畴的方法一和方法二的运用过程，并将运用两方法的结果作比较，提出：方法二的基本内容是主因素决定型的数学模型M（∧，∨），其运用结果仍显模糊，缺乏准确性；方法一简单，实用，结果直观，因为其运用过程中采用了以百分数表达的单因素评价矩阵与几项权重向量的合成运算，运用方法一，可促进编辑部审稿工作的程式化，标准化、自动化。     

Managing corporate social responsibility strategies of airports: The case of Taiwan’s Taoyuan International Airport Corporation

Airports need to manage corporate social responsibility (CSR) strategies for sustainable development. This paper develops a new structured approach for airports to evaluate, prioritize and categorize CSR strategies, using Taiwan’s Taoyuan International Airport Corporation (TIAC) as an example. Based on TIAC’s CSR-related activities, 18 CSR strategies grouped into 5 CSR goals (corporate governance and finance, green airport and environmental management, service quality and social relationship, employee and work environment management, and safety and security) are identified using the CSR value chain and diamond framework. The pairwise comparison method used in analytic hierarchy process and the decision-making trial and evaluation laboratory method are used respectively to evaluate the relative importance, feasibility and achievability of these 18 strategies and to analyze their causal relationships via expert questionnaire surveys. A new method is developed to plan and manage the implementation of CSR strategies by incorporating the viewpoints of both internal and external stakeholders, thus reflecting the practical effects and strategic implications of the CSR implementation. The result suggests that TIAC’s CSR strategies in relation to airport safety and security, service quality and corporate governance are most significant and have a high implementation priority. This paper contributes to the airport industry and CSR research by proposing a proactive mechanism for quantitatively evaluating, prioritizing and categorizing CSR strategies.     

基于模糊综合评价法的馈能悬架结构方案评价

馈能型悬架是可以回收悬架之间振动能量的新型悬架,研究国内外几种馈能型悬架方案的结构和工作原理,运用模糊综合评价法对馈能型悬架的结构方案进行评价.结果表明液电馈能型悬架方案具有明显的优势,是最可行的馈能型悬架结构方案.     

公路桥梁技术状况评定方法分析

根据实际工作经验详细分析了桥梁的技术状况评定方法,对计算过程进行了详细说明,并列举了在评定过程中需要注意的问题,提出了公路桥梁技术状况评定的建议。     

Safety modeling for two‐way left‐turn lanes and a procedure to identify two‐way left‐turn lane segments with safety concerns

In the past, two‐way left‐turn lane (TWLTL) median treatments have been frequently used in Florida to inexpensively improve traffic and safety performances. In order to identify factors that may have significant impacts on safety operations in TWLTL sections and to identify TWLTL locations that present existing and future safety concerns, a research project was carried out and results are summarized in the paper. In the research, a three‐year crash history database with crashes and section characteristics from a total of 1688 TWLTL sections all over Florida was developed and used. A negative binomial regression model was developed to determine the statistical relationship between the number of crashes per mile per year and several variables such as traffic volume, access density, posted speed, and number of lanes. In regard to the methodology, in order to identify locations with safety concerns, several steps are needed: development of real crash data distribution, determination of statistical distribution models that better represent the actual crash data, determination of percentile values for the average number of crashes, estimation of crash rates for sections with the same characteristics, estimation of critical values for the variables corresponding to the percentile values for average number of crashes, calculation of tables of critical average annual daily traffic values, and generation of a list of TWLTL locations with critical safety concerns. Results presented in the paper have been used in real applications. Copyright © 2012 John Wiley & Sons, Ltd.