高速公路波形梁钢护栏施工质量控制

交通安全设施是高速公路工程的重要组成部分,波形梁护栏作为高速公路上的基本安全设施,对促进高等级公路的交通安全起着重要的作用。     

高原冻土地区公路施工的质量通病与预防措施

高原冻土地区受恶劣的气候和地质条件的影响,对公路施工质量有较高的要求。鉴于此,探讨高原冻土地区公路施工的质量通病,并提出相应的预防策略,具有一定的理论和实际意义。     

基于校园网的教学质量评估系统解决方案

分析了教学质量评估的特点 ,结合动态网页技术 ,给出了开发基于校园网的教学质量评估系统的具体解决方案     

黄河大桥大跨波形钢腹板PC连续梁桥合龙施工技术

武西高速公路桃花峪黄河大桥跨大堤桥合龙段施工是波形钢腹板PC连续梁悬浇施工中的重点、难点,针对悬臂现浇钢腹板PC梁合龙段施工的施工工艺,结合施工现场实际情况,阐述了黄河大桥跨大堤桥边跨、中垮合龙段施工要点及质量控制措施。     

The quality of survey data: Telephone versus face-to-face interviews

Those designing surveys and producing data have always been concerned about its quality. The increasing stringency of the financial constraints which affect public authorities and the increased scope of involvement in the regulation of urban travel has led us to pay even greater attention to the quality of data. This issue is frequently covered in the literature on survey methods. However, comparisons between different survey methods are more rarely conducted. The decision to conduct such an analysis is partly the result of the development of telephone use to the detriment of other survey modes in many countries and also the development of Computer-Aided Telephone Interviewing (CATI) which facilitates the running and monitoring of the survey.This paper examines several aspects of this question in order to compare the performance of telephone and face-to-face interviews. The first aspect is the representativeness of the sample, and therefore relates mainly to the issue of nonresponses and the choice of a sample base. The second concerns the accuracy of the information and involves the choice of a survey area and the recording of all trips, including short-distance travel. Finally, the quality of data is obviously determined by the quality of the responses given by those interviewed.The answers we give frequently depend on the objective of the surveys, which leads us to put forward a table which summarizes the performance of telephone and face-to-face interviews on the basis of the main objective of the survey. Broadly, the telephone seems to be the favoured tool for surveys in the area of transport planning and surveys which aim to provide data for forecasting models, mostly on the grounds of cost. However, face-to-face techniques are often preferred for surveys which aim to discover and analyze the factors which explain individual travel behaviour.     

公路隧道施工质量问题与控制探讨

通过对隧道工程特点和新奥法的总结与认识,提出对隧道施工的基本要求,并对公路隧道容易出现的施工质量问题进行探讨。在此基础之上,提出解决隧道施工质量问题的建议,对隧道施工管理和质量控制有一定的指导作用。     

从大莱龙铁路投标谈如何提高报价内涵质量

通过复核工程数量、合理计算运杂费和灵活编制补充单价,以及在认真检查计算过程中存在的问题等方面,简述提高报价内涵质量.     

25K型全列空调客车内环境卫生学研究

目的：对25K型全列空调客车内环境进行卫生学研究，为今后全列空调客车的技术改造和管理提供卫生学依据。方法：根据国家有关标准、规范对国产25K型全列空调客车车厢内微小气候、物理因素、空气质量进行检测，测得数据采用PEM3．0软件进行统计分析。结果与结论：25K型全列空调客车内微小气候、人工照明符合国家卫生标准，但风速低，新风量不能完全满足空调车通风技术指标；噪声强度、环境振动受路况影响。车厢内空气质量较25G型全列空调客车差，对目前25K型国产空调客车在通风换气以及日常卫生管理、维护有待进一步加强。建议根据实际情况在空调车内安装负离子发生器，改善车厢内空气质量。     

工程监理在施工过程中的重要作用

为对工程建设实施质量控制,引入全面质量管理的理念,阐述了工程监理对工程施工质量控制的三个阶段,即:事前控制、事中控制和事后控制的具体方法。并对建筑工程施工阶段的质量控制流程和方法进行探讨。     

租船运输业务与法律课程专业双语教学调查问卷评析

为提高学生英语水平,突出我院办学特色,对管理系国航专业租船运输业务与法律课程双语教学进行问卷调查。对开展双语教学是否有必要、教学质量、教材质量、教师水平、双语授课的比例、教学时数、建议和看法等方面广泛征求学生的意见,大部分学生认为开展双语教学有必要,既提高了外语水平,又提升专业知识和能力。对双语课程教学质量、双语教学的教材、教师的知识水平表示满意；认为双语教学应保证质量,稳步增加。通过问卷调查,也发现学生对教师所讲知识的掌握程度不理想；过半学生未提前预习和课后复习所要讲授的内容。