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相关概念视频

Field Application of Global Positioning System01:28

Field Application of Global Positioning System

The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...

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相关实验视频

Updated: Jul 16, 2026

A Methodology for Capturing Joint Visual Attention Using Mobile Eye-Trackers
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Published on: January 18, 2020

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使用智能手机眼睛跟踪用于自我记录位置测试的可行性.

Pouya B Bastani1,2, Vidith Phillips1, Hector Rieiro1,2

  • 1Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Digital biomarkers
|June 19, 2025
PubMed
概括

一个名为EyePhone的智能手机应用程序允许个人自行记录眼睛的运动,用于诊断良性发作性定位 (BPPV). 这项技术对远程诊断和改善患者获得护理的机会充满希望.

关键词:
良性性发性定位性头.眼球追踪器 眼球追踪器定位测试 定位测试 定位测试智能手机是一个智能手机.

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Using an Automated Hirschberg Test App to Evaluate Ocular Alignment
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相关实验视频

Last Updated: Jul 16, 2026

A Methodology for Capturing Joint Visual Attention Using Mobile Eye-Trackers
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Published on: January 18, 2020

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科学领域:

  • 眼科医生 眼科 眼科
  • 神经学 神经学
  • 医疗技术 医疗技术 医学技术

背景情况:

  • 良性发性位置性 (BPPV) 是的常见原因.
  • 诊断依赖于通过定位测试检测阴囊.
  • 对临床医生的有限访问阻碍了及时的BPPV诊断和治疗.

研究的目的:

  • 为了评估基于智能手机的眼睛跟踪应用程序 (EyePhone) 的可用性.
  • 评估在BPPV诊断的位置测试中自我记录眼动的可行性.

主要方法:

  • 健康的志愿者使用EyePhone应用程序进行自我记录Dix-Hallpike和Supine Roll测试.
  • 记录了参与者的准确性和所需时间.
  • 应用程序可用性通过mHealth应用程序可用性问卷 (MAUQ) 进行评估;视频质量由专家评估.

主要成果:

  • 所有参与者都成功地使用应用程序记录了眼睛的运动.
  • 平均录制时间为Dix-Hallpike的3分31秒,Supine Roll的3分4秒.
  • 95%的视频显示眼睛清晰可见,参与者发现应用程序易于使用.

结论:

  • EyePhone应用程序是可用的和可行的自我记录定位测试.
  • 这项技术有可能促进远程BPPV诊断.
  • 该应用程序可以改善患者获得治疗头和的护理.