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相关概念视频

Pulse Assessment Sites01:11

Pulse Assessment Sites

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Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
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Movement Joints in Buildings01:27

Movement Joints in Buildings

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Movement joints in buildings are essential design elements that accommodate inevitable motions caused by various factors such as temperature changes, moisture content variations, and structural deflections. These motions, if not considered in design and construction, can lead to unsightly or dangerous damage. Movement joints are incorporated in different forms to manage these stresses and allow materials to move without causing distress.
The simplest type of movement joints, working joints, are...
490
Distance Measurements by Taping01:18

Distance Measurements by Taping

716
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
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Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

776
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
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Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

584
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
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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

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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...
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相关实验视频

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Evaluation of a Smartphone-based Human Activity Recognition System in a Daily Living Environment
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使用可穿戴传感器识别家庭和社区的移动使用连续和直线步行时间

Lauren Gracey-McMinn1, David Loudon2, Alix Chadwell3

  • 1Centre for Human Movement and Rehabilitation, School of Health and Society, University of Salford, Salford M6 6PU, UK.

Sensors (Basel, Switzerland)
|August 28, 2025
PubMed
概括

这项研究开发了一种使用可穿戴传感器的新模型, 以客观地测量社区参与, 高度准确地区分家庭和社区活动. 通过提供比主观报告更准确,更真实的数据,从而推进功能恢复评估.

关键词:
加速度计活动PAL活动分类社区参与移动性评估客观测量物理行为监测康复的结果

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Using a Real-Time Locating System to Measure Walking Activity Associated with Wandering Behaviors Among Institutionalized Older Adults
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Home-Based Monitor for Gait and Activity Analysis
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Using a Real-Time Locating System to Measure Walking Activity Associated with Wandering Behaviors Among Institutionalized Older Adults
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Home-Based Monitor for Gait and Activity Analysis
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科学领域:

  • 生物医学工程
  • 康复科学
  • 可穿戴技术

背景情况:

  • 对社区参与的客观测量对于评估临床环境中的功能恢复和干预效果至关重要.
  • 目前依赖主观自我报告措施限制了评估现实活动的准确性和可靠性.
  • 需要验证的方法来客观地量化身体行为和社区参与.

研究的目的:

  • 开发和验证一个分类模型,以区分家庭和社区活动.
  • 利用activPAL设备的步行和躺着数据进行客观的身体行为监测.
  • 通过准确的姿势数据分析,加强功能移动性和社区参与的评估.

主要方法:

  • 使用activPAL设备的步行和躺卧数据开发了一个分类模型.
  • 使用网格搜索优化方法测试直线步进时间 (SLS) 和连续步进时间 (CSD) 的值组合.
  • 在24名健康参与者身上验证了该模型,他们戴着activPAL 4+监测器,并在7天内完成活动日记.

主要成果:

  • 在24小时的时间内,最佳模型在家庭与社区活动的分类中达到93.7%的准确性.
  • 一个26秒的SLS值被确定为分类模型的最佳值.
  • 该模型的准确性很高,预测和报告的社区参与时间之间的差异平均只有7分钟.

结论:

  • 开发的模型提供了客观的物理行为监测的方法进步.
  • 通过姿势数据准确地对家庭和社区活动进行分类,可以提高功能移动性和社区参与度的评估.
  • 这种方法可以改善临床决策,康复规划和干预评估,解决衡量现实世界康复的关键差距.