基于DEA方法的中小造船企业生产流程优化效率评价研究

为了有效、定量评估中小造船企业在改进生产流程方面的效率,采用数据包分析方法,在中小造船企业生产流程优化指标体系基础上,运用(CCR)模型对浙江台州地区10个船厂的生产流程优化效率进行评估和分析,指出非DEA有效造船企业优化造船生产流程的改进方向.     

The impact of strategic management and fleet planning on airline efficiency - A random effects Tobit model based on DEA efficiency scores

As a result of the liberalisation of airline markets; the strong growth of low cost carriers; the high volatility in fuel prices; and the recent global financial crisis, the cost pressure that airlines face is very substantial. In order to survive in these very competitive environments, information on what factors impact on costs and efficiency of airlines is crucial in guiding strategic change. To evaluate key determinants of 58 passenger airlines’ efficiency, this paper applies a two-stage Data Envelopment Analysis (DEA) approach, with partially bootstrapped random effects Tobit regressions in the second stage. Our results suggest that the effects of route optimisation, in the sense of average stage length of the fleet, are limited to airline technical efficiency. We show that airline size and key fleet mix characteristics, such as aircraft size and number of different aircraft families in the fleet, are more relevant to successful cost management of airlines since they have significant impacts on all three types of airline efficiency: technical, allocative and, ultimately, cost efficiency. Our results also show that despite the fuel saving benefits of younger aircraft, the age of an airline’s fleet has no significant impact on its technical efficiency, but does have a positive impact on its allocative and cost efficiency.     

WC5R煤矿用防爆柴油机无轨胶轮指挥车设计

为积极响应国家政策,保障煤矿高产高效、安全生产,设计开发了WC5R煤矿用防爆柴油机无轨胶轮指挥车,介绍了其设计原理及总体结构。     

路况评定系统在阜新地区实地分析及养护决策

全面建设"畅、安、舒、美"公路体系,科学提高公路养护工程质量和管理技术水平。路况评定系统已是公路养护管理工作的重要组成部分。通过采集实地数据录入系统分析得出养护科学决策可降低养护成本,评定系统的应用全面促进了公路检测技术、数据管理技术、数据分析技术、养护决策技术、养护规划及养护计划技术的进步。确保公路畅通、快速、安全和舒适的运营效能,逐步实现公路养护管理的科学化、规范化和制度化。     

既有线ZPW-2000A无绝缘轨道电路监测子系统构建

简要介绍ZPW-2000A监测子系统的构建和特点,并分析子系统采集的内容和各种采集设备的功能。     

基于数据挖掘的铁路机务段成本控制系统

决策支持系统是信息处理发展的新领域,投入应用的成功实例并不多.结合在铁路机务段从事管理信息系统开发的经验,讨论了在成本控制中应用数据挖掘技术的可行性,并提出了基于这一技术的成本控制系统的基本结构框架和设计实现.     

ATOS系统在摩托车整车开发中的应用

对摩托车整车进行数据采集时,没有ATOS系统往往需要1～2个月,而使用ATOS系统后仅需要约1周时间,同时节约设计中的协调时间近1个月,共缩短摩托车整车开发时间2～3个月,大大缩短了新品上市周期,提高了产品开发效率。