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相关概念视频

Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
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Sight Distance in a Vertical Curve01:29

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Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...
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相关实验视频

Updated: Jun 9, 2025

Measuring the Behavioral Effects of Intraocular Scatter
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探索老行人参与夜间撞车事故的模式.

Mahmuda Sultana Mimi1, Rohit Chakraborty1, Jinli Liu2

  • 1Texas State University, 601 University Drive, San Marcos, TX 78666, United States.

Accident; analysis and prevention
|October 24, 2024
PubMed
概括

涉及老年行人的夜间车祸在照明不佳的高速公路上更为严重. 改善照明和降低速度限制等干预措施对于提高高级行人安全至关重要.

关键词:
协会规则 矿业 矿业崩 发生 崩照明条件 照明条件晚上的时间 夜间时间年长的行人行人安全的安全的安全的安全的安全.

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Trajectory Data Analyses for Pedestrian Space-time Activity Study
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Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street

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相关实验视频

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科学领域:

  • 道路安全研究 道路安全研究
  • 老年学是一门学科.
  • 交通工程是交通工程.

背景情况:

  • 年龄较大的行人 (65岁以上) 面临着夜间车祸的风险增加,原因是与年龄相关的视力和反应时间下降.
  • 夜间条件加剧了这些漏洞,使它们成为严重的公共安全问题.

研究的目的:

  • 分析德克萨斯州 (2017-2022) 的车祸数据,以确定导致老年行人 (65-74岁和75岁以上) 夜间车祸严重程度的因素.
  • 应用协会规则挖矿 (ARM) 来发现与此人口群体严重结果相关的特定模式.

主要方法:

  • 利用协会规则挖掘 (ARM) 在德克萨斯州夜间行人撞车事故的六年数据集上.
  • 对两个较老的行人年龄组进行细分分析:65-74岁和75岁以上.
  • 研究了照明条件,限速,道路复杂性,天气和人口统计因素对撞车严重性的影响.

主要成果:

  • 高速限制和复杂的道路环境显著提高了老行人年龄组的致命或严重伤害的风险,特别是在低光照明下.
  • 不充分的照明条件是放大碰撞严重性的关键因素.
  • 人口变量,恶劣的天气和特定的道路特征也被确定为重要贡献因素.

结论:

  • 实施较低的速度限制,改善街道照明和采用先进的行人安全技术是必不可少的.
  • 调查结果强调需要有针对性的策略,以减轻夜间环境中老行人面临的风险.
  • 政策制定者应该利用这些数据驱动的见解来加强对弱势老年道路使用者的道路安全措施.