基于凌阳单片机控制的语音小车

本设计利用凌阳SPCE061A单片机控制四相步进电机,完成智能小车前轮的连杆传动,带动前轮转向;并通过单片机控制功率放大电路,带动后轮共轴直流电机,完成正转倒转功能;其间的各种行进控制用语音识别来完成,包括前进,后退,停止,左转,右转。在智能车的前端装有两个光线传感器,可以通过对左右光线的变化识别是否将要碰撞前方障碍物,进而反馈到单片机进行转向控制,完成躲避障碍物的功能。     

加盖自卸式垃圾车的推广前景

随着经济的不断发展,城镇化建设进程的加快,随之产生的建筑垃圾日益增多。为了解决建筑垃圾在转运过程中随地撒漏、尘土飞扬的现状,柳州延龙汽车有限公司进行了深入研究,率先在广西提出了建筑垃圾密闭化运输方式,并在南宁、柳州等城市成功使用加盖自卸式垃圾车,避免了建筑垃圾在转运过程中对环境造成二次污染。     

发展汽车旅馆业——中国饭店业的选择

汽车旅馆是西方一种非常流行的旅馆类型,以其经济、舒适、方便的特点深受这些国家民众的喜爱。可以说,汽车旅馆的出现,不仅为所在国的饭店业带来了新的活力,而且也有利于其旅游业的发展。改革开放以来,中国经济日新月异,已经具备了发展汽车旅馆业的条件。汽车饭店将是今后中国饭店业的选择。本文介绍了汽车旅馆的概况,并结合中国现状,提出了发展汽车旅馆业的一些对策和建议。     

我国制造业不同外包形式的就业效应研究——基于动态劳动需求模型的实证检验

本文测算了我国27个制造业细分产业的总外包水平、低技术外包水平、高技术外包水平和服务外包水平,并构建了我国制造业的动态劳动力需求模型,利用一步广义距估计(One Step Diff-GMM)法分析了制造业的总体外包、低技术外包、高技术外包和服务外包的就业效应,结论为:制造业总体外包、低技术外包和高技术外包对就业呈抑制作用;低技术外包和高技术外包水平相当,但低技术外包的就业净效应是高技术外包的将近二倍;而服务外包规模尚小,还不足以对就业产生影响。     

Effects of Motor Carriers’ Growth or Contraction on Safety: A Multiyear Panel Analysis

Motor carrier safety remains a highly relevant issue for supply chain managers and scholars because carriers’ safety affects supply chains as well as the welfare of the motoring public. This article enriches understanding regarding this topic by investigating how motor carriers’ growth or contraction since the start of the Compliance, Safety, and Accountability (CSA) program in 2010 affects their safety performance. Drawing on core principles from theories regarding internal adjustment costs from economics and nonscale free capabilities from management, we explain why carriers’ growth or contraction should differentially affect various safety metrics tracked by the CSA program. To test our theory, we assemble a multiyear panel data set for over 1,000 of the largest for‐hire motor carriers operating in the United States by melding together several different governmental data sources. We fit a series of multivariate seemingly unrelated regression models to test our hypothesized effects. Our results corroborate our theorized predictions and are robust to alternative model specifications. We conclude by detailing how this work contributes to extant theory, summarizing managerial and policy implications, highlighting limitations, and suggesting directions for further pursuit.     

基于Little-JIL供应链管理核心过程的研究

论述了供应链管理的过程理论以及流程重组的一个基础架构。介绍了Little-JIL——一种用来编写协作过程代码的、可执行的、具有正式且图形化的语法和严密定义的语义规则的高级语言,对过程的建模与分析。使用Little-JIL编写可执行的过程模型,建立过程仿真,对过程做静态和动态的分析,支持过程代码的分布式部署实施,并以供应链管理的核心过程客户服务关系管理为例进行实证研究。     

企业风险管理浅析

本文介绍了风险管理的涵义、风险管理的步骤,提出了地勘企业风险管理发展的启示.     

同步电动机励磁装置故障解析

本文通过对同步电动机励磁装置工作原理的分析,对我厂在实际应用中出现的故障进行了剖析,并提出了改进措施。     

A Multivariate Time‐Series Examination of Motor Carrier Safety Behaviors

Motor carriers’ operational safety affects multiple stakeholders including truck drivers, motor carriers, insurance companies, shippers, and the general public. In this article, I devise and test theory regarding motor carriers’ longitudinal performance for three classes of safety behaviors linked to carriers’ accident rates—Unsafe Driving, Hours‐of‐Service Compliance, and Vehicle Maintenance—tracked by the Federal Motor Carrier Safety Administration as part of the Compliance, Safety, and Accountability (CSA) program. Specifically, I draw on core concepts from sociological agency theory and resource dependency theory to devise middle‐range theory that generates never‐before‐tested hypotheses regarding carriers’ longitudinal safety performance for these classes of safety behaviors after the start of the CSA program. The hypothesized predictions are tested by fitting a series of multivariate latent curve models to four years of panel data for a random sample of 484 large, for‐hire motor carriers operating in the United States. The empirical findings corroborate the theoretical predictions and remain after robustness testing. These findings have important implications for scholars, motor carrier managers, procurers of motor carrier transportation services, and public policy makers.     

台阶试验现状及发展趋势研究

综合国内外研究人员对台阶试验有氧耐力评定现状和发展趋势的分析,指出台阶评定指数评价心血管功能的有效度存在问题,造成效度低的原因是台阶评定公式存在缺陷,提出制定和完善《国家学生体质健康标准》中评价心血管功能指标的思路。