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相关概念视频

Buoyancy and Stability for Submerged and Floating Bodies01:11

Buoyancy and Stability for Submerged and Floating Bodies

In fluid mechanics, buoyancy and stability are key concepts for understanding the behavior of submerged and floating bodies. When a stationary body is fully or partially submerged in a fluid, the fluid exerts a force on the body known as the buoyant force. This force acts vertically upward through a point called the center of buoyancy, which is the center of the displaced fluid volume. According to Archimedes' principle, the magnitude of the buoyant force is equal to the weight of the fluid...

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相关实验视频

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Design and Construction of a Cost Effective Headstage for Simultaneous Neural Stimulation and Recording in the Water Maze
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使用头部显示器游泳:双重任务成本

Kenneth M Jackson1,2, Sean C Thayer1, Kassidy L Simpson1

  • 1Department of Psychology, George Mason University, Fairfax, VA, USA.

Ergonomics
|April 13, 2024
PubMed
概括

头顶显示器 (HUD) 可以帮助水中工作,但在使用HUD游泳时进行多任务可能会增加认知负载. 性能受到影响,这表明设计考虑了水下HUD的使用.

关键词:
多任务处理是多任务处理.增强现实 (AR) 是一种增强现实.心理工作负荷是什么在游泳中游泳.视觉显示器是指视觉显示器

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科学领域:

  • 人与计算机的交互
  • 应用生理学应用生理学
  • 认知心理学 认知心理学

背景情况:

  • 头顶显示器 (HUD) 提供无手信息,可能改善操作环境.
  • 之前对HUD的研究主要集中在陆地任务上,在了解水生应用方面存在差距.
  • 水生环境带来独特的挑战,包括沉浸和生理因素,这些因素可能会影响多任务处理.

研究的目的:

  • 为了研究游泳者使用HUD的多任务性能.
  • 描述与HUD在水中环境中的使用相关的双重任务干扰.
  • 为设计HUD用于水下作业提供见解.

主要方法:

  • 18名参与者执行了三个条件:单独游泳,基于HUD的单词回忆任务和结合游泳和单词回忆的双任务.
  • 通过测量游泳和认知任务之间的干扰来评估多任务性能.
  • 数据分析的重点是比较不同任务条件的性能.

主要成果:

  • 当参与者同时进行游泳和HUD单词回忆任务时,观察到显著的双重任务干扰.
  • 在水中观察到的干扰似乎可能比以前研究的陆地任务少得多.
  • 该研究量化了HUD使用对游泳期间认知负载的影响.

结论:

  • 在水生环境中使用HUD可以导致双任务干扰,影响性能.
  • 研究结果表明,虽然认知负载增加,但可能不如陆地上那么严重.
  • 这项研究为在水下操作环境中开发有效的HUD提供了关键数据.