居民出行数据是交通规划中最重要的基础资料之一,但在传统居民出行调查中该数据的获取耗时长、成本高、自动化程度低,完全不能满足现行中国蓬勃的城市建设、规划的需要。该文提出了“person as sensor”的概念,也就是把居民日常使用的...居民出行数据是交通规划中最重要的基础资料之一,但在传统居民出行调查中该数据的获取耗时长、成本高、自动化程度低,完全不能满足现行中国蓬勃的城市建设、规划的需要。该文提出了“person as sensor”的概念,也就是把居民日常使用的通讯工具——手机作为检测器,利用手机在居民使用过程中产生的大量位置和时间信息进行居民用户调查。该方法对现有的无线网络和手机都不需要进行任何修改,并且一旦实施将能够获取居民出行的实时数据。展开更多
The final microstructure of DP and TRIP assisted steels can evolve after hot working (hot rolling) or during post heat treatment process. In the formation of the final structure a number of different technological par...The final microstructure of DP and TRIP assisted steels can evolve after hot working (hot rolling) or during post heat treatment process. In the formation of the final structure a number of different technological parameters have important roles, e.g. end temperature of rolling, cooling rates, temperature of intercritical annealing, etc. As a result of the individual factors and their combinations a lot of product technology routes are feasible. The effect of the different combinations of these technological parameters on the microstructure can be mapped by the special Jominy end-quench test (so called intercritical Jominy end-quench test) described in this paper. Unlike the traditional Jominy test, in this case there is a partial austenizing between A! and A3 temperatures which results in a given amount of ferrite in the microstructure before quenching. The method developed can be applied for mapping DP and TRIP assisted steels’ microstructure in a wide range of technological parameters. The analysis of measured and calculated data can help us find the technological parameters optimal from the microstructural point of view.展开更多
文摘居民出行数据是交通规划中最重要的基础资料之一,但在传统居民出行调查中该数据的获取耗时长、成本高、自动化程度低,完全不能满足现行中国蓬勃的城市建设、规划的需要。该文提出了“person as sensor”的概念,也就是把居民日常使用的通讯工具——手机作为检测器,利用手机在居民使用过程中产生的大量位置和时间信息进行居民用户调查。该方法对现有的无线网络和手机都不需要进行任何修改,并且一旦实施将能够获取居民出行的实时数据。
基金support of Hungarian Ministry of Education and TET Foundation(CHN-25/03 China-Hungary)is greatly acknowledged.
文摘The final microstructure of DP and TRIP assisted steels can evolve after hot working (hot rolling) or during post heat treatment process. In the formation of the final structure a number of different technological parameters have important roles, e.g. end temperature of rolling, cooling rates, temperature of intercritical annealing, etc. As a result of the individual factors and their combinations a lot of product technology routes are feasible. The effect of the different combinations of these technological parameters on the microstructure can be mapped by the special Jominy end-quench test (so called intercritical Jominy end-quench test) described in this paper. Unlike the traditional Jominy test, in this case there is a partial austenizing between A! and A3 temperatures which results in a given amount of ferrite in the microstructure before quenching. The method developed can be applied for mapping DP and TRIP assisted steels’ microstructure in a wide range of technological parameters. The analysis of measured and calculated data can help us find the technological parameters optimal from the microstructural point of view.
