期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
生产性服务业与下游企业的集聚研究:以广州市银行业为例 被引量:1
1
作者 陈日新 陈向阳 《产经评论》 2012年第5期23-38,共16页
随着城市之间贸易的深入发展,现阶段中国城市化的一个重要特征就是生产性服务业向各城市群中心城市的集聚日益增长。本文以广州市四大国有商业银行为例,对生产性服务业与下游制造业的集聚进行了理论建模和实证分析。其结论认为:在理论... 随着城市之间贸易的深入发展,现阶段中国城市化的一个重要特征就是生产性服务业向各城市群中心城市的集聚日益增长。本文以广州市四大国有商业银行为例,对生产性服务业与下游制造业的集聚进行了理论建模和实证分析。其结论认为:在理论上控制生产性服务业与下游制造业集聚的参数主要有中间服务与最终产品的运输成本和二者的边际产品以及中间服务的供应价格等;由于现阶段中国的生产性服务在城市之间的贸易程度尚较低,因此它们和制造业中的中间产品及最终产品生产企业既有集聚式分布又存在分散式布局模式,现代中国大都市的生产性服务业与下游企业的区位主要以集聚式布局为主要特征。 展开更多
关键词 生产性服务业 四大商业银行 集聚式分布
下载PDF
Aggregation in Intersection Region for Distributed Heterogeneous Mobile Sensor Networks 被引量:1
2
作者 ZHENG Zhi PENG Zhihong CHEN Jie 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2017年第4期932-949,共18页
This paper presents two aggregation strategies in convex intersection region for the distributed mobile sensor network(MSN) with heterogeneous dynamics. First, the authors analyze individual local perception model and... This paper presents two aggregation strategies in convex intersection region for the distributed mobile sensor network(MSN) with heterogeneous dynamics. First, the authors analyze individual local perception model and dynamics model, set the intersection of all the local perceptions as the region of interest(ROI). The MSN consists of sensors with first-order dynamics and second-order dynamics. Then, the authors design a control strategy to ensure that individuals aggregate at a point in the ROI relying on their local perceptions and the locations of neighbors within their communication scope. The authors describe this situation of aggregation as rendezvous. In addition, the authors introduce artificial potential field to make sensors deploy dispersedly in a bounded range near the ROI,which the authors call dispersed deployment. Finally, the authors prove the stability of the proposed strategies and validate the theoretical results by simulations. This research is applied for the cooperative deployment and data collection of mobile platforms with different dynamics under the condition of inaccurate perception. 展开更多
关键词 AGGREGATION convex intersection heterogeneous dynamics mobile sensor.
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部