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对男篮世界冠军决赛的首、再投得分势态类型探讨
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作者 黄松华 《湖北体育科技》 1998年第3期27-30,共4页
对美国梦队和前苏联队四次冠军决赛的研究,说明世界冠军的得分势态类型和成因及形成攻、防、抢良性循环的指标依据。
关键词 男篮 世界冠军决赛 首投得分 再投得分 势态类型
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Vehicle emissions calculation for urban roads based on the Macroscopic Fundamental Diagram method and real-time traffic information 被引量:1
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作者 WANG Kun TONG Yali +4 位作者 CAO Tianhui WANG Chenlong WANG Renjie GAO Jiajia LIU Yuan 《Atmospheric and Oceanic Science Letters》 CSCD 2020年第2期89-96,共8页
Vehicle emissions calculation methods mostly use ownership information or annual road monitoring data as the activity level to calculate air pollutant emissions,but it is hard to reflect either the emissions intensity... Vehicle emissions calculation methods mostly use ownership information or annual road monitoring data as the activity level to calculate air pollutant emissions,but it is hard to reflect either the emissions intensity under different conditions or the spatiotemporal characteristics in various sections based on such approaches.This paper presents a method based on the Macroscopic Fundamental Diagram and real-time traffic data to calculate vehicle emissions,which could reflect the operation conditions and emission characteristics of vehicles.Following the‘Technical Guide for the Compiling of Road Vehicle Air Pollutant Emissions Inventories’,the emissions of three roads with different lane numbers and road grades in Beijing were estimated and verified using this method.Compared with monitoring data,the average deviations of the traffic flow on the Fifth Expressway,Jingfu National Highway,and Jingzhou Provincial Highway were?25.5%,?26.5%,and?13.4%,respectively,and the average deviations of nitrogen oxides emissions were?27.7%,?12.9%,and?12%,respectively.This method showed good application potentials to construct the emissions inventory applied to the block-scale model and analyze the spatiotemporal distribution characteristics of motor vehicle emissions in urban areas. 展开更多
关键词 Macroscopic Fundamental Diagram traffic emissions road type
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