Improving road transport operations through lean thinking: a case study

Traditionally, logistics and transportation problems have been addressed through mathematical modelling, operations research, and simulation, but criticism has emerged about their effectiveness to actually address real-life problems. This paper documents a case study whereby the road transport operations of a leading Mexican brewery were improved through lean thinking and waste reduction. Two lean-based principles and tools were combined: the Seven Transportation Extended Wastes and Transportation Value Stream Mapping. Three systematic steps were proposed to facilitate the implementation of improvement. Feasibility studies conducted in this research suggested that lean thinking is an effective alternative for the improvement of road transport operations. The findings of this research could be used as guidance for transport managers to improve road transport operations. This paper also expands the limited evidence of the application of lean thinking in road transport logistics and highlights the research areas where its application has been concentrated in this sector.     

现浇钢筋砼框架柱砼冬期养护方法之我见

介绍两种现浇钢筋砼框架柱的冬期养护的方法:远红外线电热器加热法养护砼和暖棚法养护砼,并从技术,安全,质量角度加以分析比较,得出结论。     

Machine learning for quantitative finance: fast derivative pricing,hedging and fitting

In this paper, we show how we can deploy machine learning techniques in the context of traditional quant problems. We illustrate that for many classical problems, we can arrive at speed-ups of several orders of magnitude by deploying machine learning techniques based on Gaussian process regression. The price we have to pay for this extra speed is some loss of accuracy. However, we show that this reduced accuracy is often well within reasonable limits and hence very acceptable from a practical point of view. The concrete examples concern fitting and estimation. In the fitting context, we fit sophisticated Greek profiles and summarize implied volatility surfaces. In the estimation context, we reduce computation times for the calculation of vanilla option values under advanced models, the pricing of American options and the pricing of exotic options under models beyond the Black–Scholes setting.     

220kV南冶变电站6#电容器爆炸越级跳闸事故分析

文章总结分析了南冶变电站6＊电容器爆炸引发动1＊主变压器低压侧进线开关保护动作的原因,分析得出：解决类似事故既需要加强谐波处理,确保电容器稳定运行,又需要加强建立继电保护管理制度,确保变电站稳定运行。     

高校法律援助机构教育功能实现的障碍及消解

高校法律援助机构具有操作性教育功能、道德人文教育功能、激励教育功能,对法科学生能力的培养起着重要的作用。但高校法律援助机构在实现教育功能的过程中遇到了资金缺失、人才缺乏、管理缺位、激励缺漏等障碍,我们应当通过多元化筹集资金模式的拓展、人才培训交流互动机制的建立、管理职责的厘定及管理制度的健全、激励机制的创建等路径对以上障碍予以消解。     

论小型病险水库除险加固工程设计

文章通过对南宁市那强水库的病害进行详细分析,根据分析结果提出针对性的加固设计方案.那强水库除险加固工作的顺利实施,对其他病险水库的加固处理工程具有借鉴作用,为病险水库处理技术研究积累了经验.     

高压旋喷灌浆在西牛水库除险加固工程中的应用

以广西玉林市博白县西牛水库除险加固工程为例,论述了在大坝防渗加固设计过程中,通过对比分析大坝防渗加固设计方案的优缺点,合理选择防渗加固方案,提出采用高压旋喷灌浆方案的可行性及推广价值。