作为低功耗广域网(Low Power Wide Area,LPWA)典型代表之一的窄带物联网NB-IoT技术具有广覆盖、大容量、低成本等特点,目前已在试商用阶段。同时,随着电力行业智能化的发展,海量的电力设备需要符合其通信特点的通信技术来进行信息交换...作为低功耗广域网(Low Power Wide Area,LPWA)典型代表之一的窄带物联网NB-IoT技术具有广覆盖、大容量、低成本等特点,目前已在试商用阶段。同时,随着电力行业智能化的发展,海量的电力设备需要符合其通信特点的通信技术来进行信息交换与管理。本文首先介绍了NB-IoT技术在电力行业中应用的优势,从而进一步通过建模分析电力行业中具体电力业务对NB-IoT的需求。最后通过构建电力行业中农村与密集城区两个经典应用场景来对NB-IoT的覆盖进行仿真分析,给出NB-IoT组网部署方案。展开更多
The coexistence of the slowing-down economy and the buoyant employment market has been the pattern in China in recent years, and the service sector has played an important role in this regard. This paper uses empirica...The coexistence of the slowing-down economy and the buoyant employment market has been the pattern in China in recent years, and the service sector has played an important role in this regard. This paper uses empirical analysis to prove that the service sector has a long-term mechanism to promote employment growth: first, the verification of the Baumol-Fuchs hypothesis shows that the income elasticity of demand for services in China is greater than 1. As the current development of the services is lagging behind, this sector has great development potential. Second, the revised employment equation shows that the employment elasticity of the service sector is much higher than that of the industrial sector, and its employment adhesiveness is stronger as well. The employment of the service sector can not only create more jobs for the national economy, but also help stabilize the job market. The employment pressure in China is mainly caused by migrant workers and college graduates. To solve the employment problems of these two groups, China has to promote the development of traditional services and speed up the upgrading of emerging services at the same time, and should neglect neither. This paper provides recommendations accordingly.展开更多
文摘作为低功耗广域网(Low Power Wide Area,LPWA)典型代表之一的窄带物联网NB-IoT技术具有广覆盖、大容量、低成本等特点,目前已在试商用阶段。同时,随着电力行业智能化的发展,海量的电力设备需要符合其通信特点的通信技术来进行信息交换与管理。本文首先介绍了NB-IoT技术在电力行业中应用的优势,从而进一步通过建模分析电力行业中具体电力业务对NB-IoT的需求。最后通过构建电力行业中农村与密集城区两个经典应用场景来对NB-IoT的覆盖进行仿真分析,给出NB-IoT组网部署方案。
基金supported by the Renmin University of China Research Fund Project(Grant No.10XNJ015)the outcomes of the Fourth China Macroeconomic Forum 2013 of Renmin University of China
文摘The coexistence of the slowing-down economy and the buoyant employment market has been the pattern in China in recent years, and the service sector has played an important role in this regard. This paper uses empirical analysis to prove that the service sector has a long-term mechanism to promote employment growth: first, the verification of the Baumol-Fuchs hypothesis shows that the income elasticity of demand for services in China is greater than 1. As the current development of the services is lagging behind, this sector has great development potential. Second, the revised employment equation shows that the employment elasticity of the service sector is much higher than that of the industrial sector, and its employment adhesiveness is stronger as well. The employment of the service sector can not only create more jobs for the national economy, but also help stabilize the job market. The employment pressure in China is mainly caused by migrant workers and college graduates. To solve the employment problems of these two groups, China has to promote the development of traditional services and speed up the upgrading of emerging services at the same time, and should neglect neither. This paper provides recommendations accordingly.