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城市道路落客区车辆延误模型 被引量:2
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作者 张立帆 焦朋朋 司铭锴 《系统仿真学报》 CAS CSCD 北大核心 2020年第9期1839-1846,共8页
提出一种城市道路落客区车辆延误的计算模型。分析了独立落客区和路段落客区的交通组织模式。将"排队落客"模式的落客过程分为2个阶段,结合排队论和可插车间隙理论,建立了落客车辆的延误模型,并设计了优化算法。随后以北京市... 提出一种城市道路落客区车辆延误的计算模型。分析了独立落客区和路段落客区的交通组织模式。将"排队落客"模式的落客过程分为2个阶段,结合排队论和可插车间隙理论,建立了落客车辆的延误模型,并设计了优化算法。随后以北京市安贞医院入口路段为测试对象,应用VISSIM仿真软件和实际调查的数据对模型进行验证。分析了落客率和落客区长度对落客车辆延误的影响。结果表明,模型能够精准的获取落客车辆的延误,同时可以为落客区的合理设置提供依据。 展开更多
关键词 延误模型 落客行为 VISSIM仿真 排队论
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Bloggers, Vloggers, and a Virtual Sorority: A Means of Support for African American Women Wearing Natural Hair
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作者 Tameka N. Ellington 《Journalism and Mass Communication》 2014年第9期552-564,共13页
Non-acceptance of natural African American hair is evident in mainstream media, and within the African American community. As a result, many Afi'ican American women lack knowledge about how to care for their naturall... Non-acceptance of natural African American hair is evident in mainstream media, and within the African American community. As a result, many Afi'ican American women lack knowledge about how to care for their naturally kinky hair because straightened hair has been the standard and norm. Therefore, women wearing natural hair had to seek support and education outside of their immediate community via social networking sites. Through a participatory culture framework via an Afrocentric lens, the results revealed that producers of these sites became the needed support and comfort that the natural hair community was missing. Through communication with these producers and their sites, a space was created where women began to appreciate and love their natural hair. 展开更多
关键词 natural hair social networking sites bloggers vloggers
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