用测量不确定度GUM表示测量误差的方法

测量不确定度GUM的评定与表示是一个较新的概念,其应用具有广泛性和实用性。用测量不确定度来表示测量误差的方法,是科技交流和国际贸易的迫切要求。它使各国进行的测量及其所得结果可以进行相互比对,以取得相互间的承认或共识,从而受到了国际组织和各国计量部门的高度重视。     

输水渠道横断面设计水深测试及计算(综合性)实验

输水渠道横断面设计水深测试及计算实验结合“灌溉排水工程学”及“水力学”等学科的知识,在实验过程中,通过对实验数据的测试、分析及计算和渠道模型实物的观摩,加深了对渠道设计原理的理解,与课堂上的理论教学起到了良好的互动作用。     

固定资产投资与国内生产总值的误差修正模型研究

运用协整理论和误差修正模型研究固定资产投资和国内生产总值之间的关系，可以发现它们之间存在长期均衡的协整关系，使用误差修正模型比普通的单变量方程更能反映两者长期和短期的关系，还可以避免谬误回归问题。     

一种凸轮升程误差的非接触式测量新方法

分析现有几种凸轮升程误差测量方法的优、缺点后，提出一种基于图像处理的凸轮升程误差的非接触式测量新方法．理论分析和比较实验结果表明，该测量方法简便易行，测量精度较高，具有一定的应用价值．     

支付股息欧式看涨期权的两种定价方法

根据投资组合理论,本文建立了支付股息欧式看涨期权的价格模型,并在此基础上研究了两种定价方法。     

直接序列扩频系统抗干扰性能研究

本文从直接序列扩烦的处理增益及误码率方面,借助Matlab仿真算法,分析了其在几种主要干扰下的抗干扰性能,并指出了几种有利于提高系统抗干扰能力的方法．     

‘What on Earth are They Doing in a Racing Car?’: Towards an Understanding of Women in Motorsport

Abstract

Motorsport is an under-researched area of socio-historical study. There is particularly limited academic understanding of female involvement in the social world of motorsports. Therefore, this paper focuses on the role of the media in presenting and establishing motorsport for women. In particular, a documentary analysis of articles published by a UK national newspaper group from 1890, and a case study of an all-female UK-based motor-racing championship are used to account for gendered processes that have influenced attitudes and behaviours towards women motor racers. The motor car emerged through technological progress in an overtly masculine-dominated industrial period. Traditional assumptions and biologically deterministic attitudes towards women were used by men to position motoring and motor-racing as a male preserve. Newspaper reporting throughout the 1930s suggests an era of heightened success for women motor racers as a result of gaining access to a key resource in the form of Brooklands motor-racing circuit. Following the Second World War, there was increasing commercialization and professionalization of male-dominated motorsport, as well as renewed marginalization and trivialization of female participants within the newspapers. These processes continue to influence perceptions of women in contemporary motorsport.     

碳酸丙烯酯复合溶剂脱碳研究

本文介绍了碳酸丙烯酯法脱碳技术概况,讨论了该技术存在的问题及溶剂改性研究的进展情况。结合我国脱碳工业的实际情况,提出了碳酸丙烯酯复合溶剂法是碳酸丙烯酯脱碳技术改进和发展的最佳途径。     

车辆轮轴称重仪的误差分析

轮轴称重仪是测量车辆各轮、轴重及车辆总重的称重仪器,影响轮轴称重仪称重误差的因素很多,本文将车辆本身结构对轮轴称重仪的误差影响及其他因素的误差影响进行全面分析.     

辽河柴油十六烷指数的预测

十六烷值是衡量柴油质量的重要指标,本文给出了利用生产数据对辽河柴油进行十六烷指数计算公式.