基于Peters和Westersthl(2006)、Moss(2010,2011)、Chow Ka Fat(2012)等相关文献的工作,可进一步概括出广义量词的三种主要推理模式:论元结构推理、单调性推理和广义三段论推理。可以用大量实例对这些推理模式加以说明。由于广义量词...基于Peters和Westersthl(2006)、Moss(2010,2011)、Chow Ka Fat(2012)等相关文献的工作,可进一步概括出广义量词的三种主要推理模式:论元结构推理、单调性推理和广义三段论推理。可以用大量实例对这些推理模式加以说明。由于广义量词在自然语言中普遍存在,这些研究对计算机科学中的知识表示和知识推理等方面具有重要意义。展开更多
The roundabouts are widely used in China,some of which have central islands as scenic spots.The crosswalks connecting to the central islands,normally full of pedestrians,have negative impact on roundabout capability a...The roundabouts are widely used in China,some of which have central islands as scenic spots.The crosswalks connecting to the central islands,normally full of pedestrians,have negative impact on roundabout capability and pedestrian safety.Therefore,this study proposes a fuzzy cellular automata(FCA)model to explore the safety and efficiency impacts of pedestrian-vehicle conflicts at a two-lane roundabout.To reason the decision-making process of individual drivers before crosswalks,membership functions in the fuzzy inference system were calibrated with field data conducted in Changsha,China.Using specific indicators of efficiency and safety performance,it was shown that circulating vehicles can move smoothly in low traffic flow,but the roundabout system is prone to the traffic congestion if traffic flow reaches to a certain level.Also,the high yielding rate of drivers has a negative impact on the traffic efficiency but can improve pedestrian safety.Furthermore,a pedestrian restriction measure was deduced for the roundabout crosswalk from the FCA model and national guideline of setting traffic lights.展开更多
文摘基于Peters和Westersthl(2006)、Moss(2010,2011)、Chow Ka Fat(2012)等相关文献的工作,可进一步概括出广义量词的三种主要推理模式:论元结构推理、单调性推理和广义三段论推理。可以用大量实例对这些推理模式加以说明。由于广义量词在自然语言中普遍存在,这些研究对计算机科学中的知识表示和知识推理等方面具有重要意义。
基金Project(2020YFB1600400)supported by the National Key Research and Development Program of ChinaProject(2019JJ50837)supported by the Natural Science Foundation of Hunan Province,ChinaProject(71801227)supported by the National Natural Science Foundation of China。
文摘The roundabouts are widely used in China,some of which have central islands as scenic spots.The crosswalks connecting to the central islands,normally full of pedestrians,have negative impact on roundabout capability and pedestrian safety.Therefore,this study proposes a fuzzy cellular automata(FCA)model to explore the safety and efficiency impacts of pedestrian-vehicle conflicts at a two-lane roundabout.To reason the decision-making process of individual drivers before crosswalks,membership functions in the fuzzy inference system were calibrated with field data conducted in Changsha,China.Using specific indicators of efficiency and safety performance,it was shown that circulating vehicles can move smoothly in low traffic flow,but the roundabout system is prone to the traffic congestion if traffic flow reaches to a certain level.Also,the high yielding rate of drivers has a negative impact on the traffic efficiency but can improve pedestrian safety.Furthermore,a pedestrian restriction measure was deduced for the roundabout crosswalk from the FCA model and national guideline of setting traffic lights.