In this paper, we firstly contrast Chinese mode of establishment and construction of technical dimension-color structure. achievements with those of foreign, and then study a phase structure from a complete new heigh...In this paper, we firstly contrast Chinese mode of establishment and construction of technical dimension-color structure. achievements with those of foreign, and then study a phase structure from a complete new height of dimension-color structure.展开更多
Extending Long＇s （2001） two-sector model into a three-sector model, this paper constructs a new framework for analysing the evolution mechanism of the structure of technology exports. The authors also have applied ...Extending Long＇s （2001） two-sector model into a three-sector model, this paper constructs a new framework for analysing the evolution mechanism of the structure of technology exports. The authors also have applied an adjusted Hausman model to measure the structure of exported technology at China＇s provincial level regions. Upon this foundation, approaching the subject from its domestic and international impact factors, this paper empirically tests the motives driving the structural transformation of China＇s technology export. The conclusions are： （1） the structure of China＇s technology export has improved significantly in recent years, but not as highly as measured by Rodrik （2006） et al. （2） The dynamic mechanism of the structure of China＇s technology export differs from that of the other developing countries. At national and regional levels, the mounting physical capital stock is the fundamental driving force, but with obvious decreasing marginal utility. （3） Excessive unskilled labor in the capital production sector in the central and western regions, and excessively low export prices in the eastern regions have caused negative effects of the skilled labor in the western region and unskilled labor in the eastern region on local structure of technology export.展开更多
Purpose–Traffic density is one of the most important parameters to consider in the traffic operationfield.Owing to limited data sources,traditional methods cannot extract traffic density directly.In the vehicular ad hoc ...Purpose–Traffic density is one of the most important parameters to consider in the traffic operationfield.Owing to limited data sources,traditional methods cannot extract traffic density directly.In the vehicular ad hoc network(VANET)environment,the vehicle-to-vehicle(V2V)and vehicle-to-infrastructure(V2I)interaction technologies create better conditions for collecting the whole time-space and refined traffic data,which provides a new approach to solving this problem.Design/methodology/approach–On that basis,a real-time traffic density extraction method has been proposed,including lane density,segment density and network density.Meanwhile,using SUMO and OMNet11 as traffic simulator and network simulator,respectively,the Veins framework as middleware and the two-way coupling VANET simulation platform was constructed.Findings–Based on the simulation platform,a simulated intersection in Shanghai was developed to investigate the adaptability of the model.Originality/value–Most research studies use separate simulation methods,importing trace data obtained by using from the simulation software to the communication simulation software.In this paper,the tight coupling simulation method is applied.Using real-time data and history data,the research focuses on the establishment and validation of the traffic density extraction model.展开更多
文摘In this paper, we firstly contrast Chinese mode of establishment and construction of technical dimension-color structure. achievements with those of foreign, and then study a phase structure from a complete new height of dimension-color structure.
文摘Extending Long＇s （2001） two-sector model into a three-sector model, this paper constructs a new framework for analysing the evolution mechanism of the structure of technology exports. The authors also have applied an adjusted Hausman model to measure the structure of exported technology at China＇s provincial level regions. Upon this foundation, approaching the subject from its domestic and international impact factors, this paper empirically tests the motives driving the structural transformation of China＇s technology export. The conclusions are： （1） the structure of China＇s technology export has improved significantly in recent years, but not as highly as measured by Rodrik （2006） et al. （2） The dynamic mechanism of the structure of China＇s technology export differs from that of the other developing countries. At national and regional levels, the mounting physical capital stock is the fundamental driving force, but with obvious decreasing marginal utility. （3） Excessive unskilled labor in the capital production sector in the central and western regions, and excessively low export prices in the eastern regions have caused negative effects of the skilled labor in the western region and unskilled labor in the eastern region on local structure of technology export.
文摘Purpose–Traffic density is one of the most important parameters to consider in the traffic operationfield.Owing to limited data sources,traditional methods cannot extract traffic density directly.In the vehicular ad hoc network(VANET)environment,the vehicle-to-vehicle(V2V)and vehicle-to-infrastructure(V2I)interaction technologies create better conditions for collecting the whole time-space and refined traffic data,which provides a new approach to solving this problem.Design/methodology/approach–On that basis,a real-time traffic density extraction method has been proposed,including lane density,segment density and network density.Meanwhile,using SUMO and OMNet11 as traffic simulator and network simulator,respectively,the Veins framework as middleware and the two-way coupling VANET simulation platform was constructed.Findings–Based on the simulation platform,a simulated intersection in Shanghai was developed to investigate the adaptability of the model.Originality/value–Most research studies use separate simulation methods,importing trace data obtained by using from the simulation software to the communication simulation software.In this paper,the tight coupling simulation method is applied.Using real-time data and history data,the research focuses on the establishment and validation of the traffic density extraction model.
