期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
空间机械手逆问题的完全笛卡尔坐标方法 被引量:3
1
作者 戈新生 刘延柱 《机械科学与技术》 CSCD 北大核心 1998年第3期413-415,共3页
讨论了用完全笛卡尔坐标描述的空间机械手逆动力学问题。利用完全笛卡尔坐标建立空间机械手初积分形式动力学方程,根据末端设计轨迹,对机械手进行逆动力学仿真计算,结果表明该方法是一种简便、高效的可行方法。
关键词 空间机构手 逆动力学 完全笛卡尔坐标 机械
在线阅读 下载PDF
Exploring relations between city regions based on mobile phone data
2
作者 汪烁枫 李志恒 +1 位作者 姜山 谢娜 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第7期1799-1806,共8页
City regions often have great diversity in form and function. To better understand the role of each region, the relations between city regions need to be carefully studied. In this work, the human mobility relations b... City regions often have great diversity in form and function. To better understand the role of each region, the relations between city regions need to be carefully studied. In this work, the human mobility relations between regions of Shanghai based on mobile phone data is explored. By formulating the regions as nodes in a network and the commuting between each pair of regions as link weights, the distribution of nodes degree, and spatial structures of communities in this relation network are studied. Statistics show that regions locate in urban centers and traffic hubs have significantly larger degrees. Moreover, two kinds of spatial structures of communities are found. In most communities, nodes are spatially neighboring. However, in the communities that cover traffic hubs, nodes often locate along corridors. 展开更多
关键词 mobile phone data city relations COMMUNITY DEGREE
在线阅读 下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部