增程器的最佳工作曲线的确定

增程式电动汽车是在纯电动汽车的基础上,增加一个小型的辅助动力系统作为动力补给,当动力电池电量不足时,增程器能配合动力电池一起为车辆提供能源。因此,增程式汽车能有效缓解现阶段下纯电动汽车续航里程不足的问题。研究增程器的最佳工作曲线,是降低增程式混合动力汽车的油耗的基本方法。     

The taxi industry: working conditions and health of drivers,a literature review

The taxi industry plays an important role in urban transportation systems, both in economic and mobility terms. In the case of the former, it provides employment for a large number of people and circulates significant amounts of money. In the case of the latter, it is a flexible means of transportation capable of arriving at any destination. Although the way the taxi industry is organised varies across countries and even within countries, some factors are shared at varying latitudes of the globe. Working conditions, habits, health, and exposure to road crashes have been a subject of interest for researchers from various disciplines, including medicine, psychology, and economics. However, much of this research focuses on a part of the problem and is not mutually referential. A review of the literature may be useful not only to researchers of diverse disciplines but also to industry representatives and those public officials responsible for transportation, road safety and health policy. This article provides a comprehensive review of the working conditions of taxi drivers, their relationship to road risk exposure and their consequences on the health of workers. It also includes information on coping strategies and protective behaviors. The review is based on a Scopus database search. The search covered the period from 1990 to 2015. This initial search was complemented with other database searches, which yielded some additional studies. Our goal was to summarise existing knowledge, identify possible lines of research and suggest some practical recommendations. It would be important (a) to reduce the workload, establish adequate time for breaks, and provide access to healthcare, (b) to implement actions to promote and maintain healthy habits, (c) to diagnose, detect and treat indicators of occupational fatigue and stress, and (d) to develop programs that make it possible to evaluate work concerns and broaden coping strategies to foster positive changes.     

振荡浮标式波浪能发电机设计参数的初步选定

参考某型振荡浮标式波浪能发电机的具体参数,结合装置的工作过程,建立海洋浮标工作过程的动力学方程;基于数值分析软件Matlab分析给定海况下浮标质量、电磁阻尼系数与装置工作安全性、能量转换效率的对应关系;探索了一组装置结构的最优化参数。研究结果对海洋可再生能源研究具有一定的参考价值。     

大学生人身伤害事故归责原则分析

高校在办学过程中发生的大学生人身伤害事故的解决主要取决于如何认定高校与大学生的法律关系及高校责任的归结问题.高校与大学生的法律关系不是单一的,包括教育行政法律关系、民事法律关系等,因此决定其归责原则体系应由过错责任原则、过错推定责任原则组成.提出解决大学生人身伤害事故的赔偿应实现市场化.     

车轮耦合方式发展及其导向机理

详细分析了传统轮对、独立旋转车轮及耦合轮对等3种不同模式轮轨系统的导向机理,认为传统轮对虽然存在蛇行运动,但其自身却具有直线上的自动对中能力和曲线上的自动导向能力．应用也较广;独立旋转车轮虽然不存在蛇行运动．但在直线上的自动复原能力不如传统轮对．近年来在城市轨道车辆上被广泛采用;耦合轮对兼具前二者的优点．但其工程化尚有难度,相信不久的将来会成功地应用于铁道车辆中。     

离散系统动力学的位移变分原理

通过对位移、功、势能和虚位移、虚功等概念的阐述,用变积运算定义了瞬时势能,然后用变积法从达朗贝尔-拉格朗日原理导出位移变分原理。该原理是势能驻值定理在动力学中的发展,也是达朗贝尔-拉格朗日原理的延伸,使动力学问题得到简化。     

试论高校教育成本核算

随着市场经济的不断发展。高等教育办学的投资体制已经呈现多元化的趋势,教育市场正在逐步形成,但是传统教育成本已经不能满足市场化和多元化的要求,那么要使高等教育可持续发展,就应该建立科学的高校人才培养成本的核算制度,合理使用资金和优化配置教育资源,使高校的经济效益和社会效益、教育成本与教育收益达到统一、协调发展。     

基于LIN总线技术的后视镜控制策略及故障处理方法研究

由于卡车的底盘较高,后视镜较大,人工调节后视镜较为费力,目前市场上一些高端卡车的后视镜调节都是通过开关控制电机来实现,主流的技术方案是开关与控制器之间通过硬线连接,控制器与后视镜调节电机之间也是硬线连接,这就造成控制器针脚占用过多和线束过多的问题。因此本文介绍一种基于LIN总线技术的后视镜调节策略,同时,从后视镜系统控制原理出发,结合实际案例介绍一种后视镜功能失效的分析方法。     

SB23熔断丝损坏导致迈腾B8L起动机不转故障的诊断分析

本文针对迈腾B8L起动机不转,结合全国高职院校学生技能竞赛训练过程进行整理,得出排除此类故障的一般性方法。     

TFT-LCD显示原理及评判参数

随着技术进步,车载显示屏应用越来越广泛,本文简单介绍显示屏的发展史,在此基础上,主要阐述目前汽车上应用最广的TFT-LCD显示屏的显示原理及评判参数。