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敦煌文献中所见唐五代时期的水利官吏 被引量:1
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作者 李并成 《历史地理研究》 2020年第1期109-119,156,共12页
敦煌文献中保存了许多唐五代时期地方各级水利官吏的设置运作状况记录。唐代前期设都水令,为当时敦煌"统以千渠"的最高级别水利官员。中唐吐蕃统治时期设"水官""部落水官"以及"水监""部... 敦煌文献中保存了许多唐五代时期地方各级水利官吏的设置运作状况记录。唐代前期设都水令,为当时敦煌"统以千渠"的最高级别水利官员。中唐吐蕃统治时期设"水官""部落水官"以及"水监""部落水监""地方总水监"。晚唐五代归义军时期专设水司,长官为都渠泊使,下设多名水官。敦煌绿洲四界及寿昌灌区分别设置多名有特殊责任的水官"平水",以"平治水利",平水"相量"为务。此外,每条灌渠、每座斗门均设渠头或斗门长,属基层一级。这套水利官吏系统层层负责,相互配合,有效保证了农田灌溉顺利进行。同时敦煌民间还自发地组织起一批"渠人社",这对地方政府水利管理体系是有益的补充。研究历史上水利官吏系统及其运作状况,对今天河湖运行和治理管护也具有借鉴作用。 展开更多
关键词 敦煌文献 唐五代时期 水利官吏 渠人社
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Simulation model of self-organizing pedestrian movement considering following behavior 被引量:9
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作者 Zhilu YUAN Hongfei JIA +3 位作者 Mingjun LIAO Linfeng ZHANG Yixiong FENG Guangdong TIAN 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2017年第8期1142-1150,共9页
A new force is introduced in the social force model (SFM) for computing following behavior in pedestrian counterflow, whereby an individual tries to approach others in the same direction to avoid conflicts with pede... A new force is introduced in the social force model (SFM) for computing following behavior in pedestrian counterflow, whereby an individual tries to approach others in the same direction to avoid conflicts with pedestrians from the opposite direction. The force, like a kind of gravitation, is modeled based on the movement state and visual field of the pedestrian, and is added to the classical SFM. The modified model is presented to study the impact of following behavior on the process of lane formation, the conflict, the number of lanes formed, and the traffic efficiency in the simulations. Simulation results show that the following behavior has a significant effect on the phenomenon of lane formation and the traffic efficiency. 展开更多
关键词 GRAVITATION Pedestrian counterflow Social force model (SFM) Lane formation SELF-ORGANIZING
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