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相关概念视频

Design Example: Marking Boundaries of a Site Using a Compass01:12

Design Example: Marking Boundaries of a Site Using a Compass

39
Marking site boundaries using a compass is a precise surveying technique that ensures the accuracy of boundary delineation. The process begins by using provided site details, including the bearings and lengths of each boundary line. The initial step involves calculating latitudes and departures for all sides of the site. This computation verifies that the traverse is free of errors, ensuring a closed and accurate boundary.The process starts at a known point, such as Point A, which is often...
39
Field Procedure for Staking Out Curves01:26

Field Procedure for Staking Out Curves

46
Staking out curves is an essential process in construction to ensure the accurate alignment of structures along a curved path. This task involves positioning stakes at calculated locations corresponding to the curve's design, effectively translating plans into physical markers in the field. The process begins by determining the geometric parameters of the curve, including the radius, central angle, and tangent distances. These parameters are critical for identifying key points such as the...
46
Taping Over Different Ground Profiles01:12

Taping Over Different Ground Profiles

25
Taping over varying ground profiles requires careful adaptation to achieve accurate measurements. On smooth, level ground with minimal vegetation, the tape can rest directly on the ground. Here, the taping team, typically consisting of a head and a rear tapeman, coordinates their positions with clear communication. The rear tapeman holds the tape at the starting point and guides the head tapeman toward a range pole placed beyond the endpoint, using hand or voice signals to ensure alignment.On...
25
Latitudes and Departures01:27

Latitudes and Departures

86
Latitudes and departures are essential concepts in surveying, providing a systematic way to analyze the projections of traverse lines. These projections allow surveyors to interpret a line's north-south and east-west components, which are crucial for precisely calculating areas, bearings, and lengths. Latitude is the north-south projection of a line, calculated as the product of the line's length and the cosine of its bearing. Departure, conversely, is the east-west projection obtained by...
86
Stress: General Loading Conditions01:15

Stress: General Loading Conditions

309
To grasp the intricacy of real-world conditions where multiple loads are applied simultaneously to a structure, one might visualize a section passing through a specific point within a body, aligned parallel to the xy plane. This section is subjected to various forces, including original loads, normal forces, and shearing forces.
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes....
309
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

30
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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Postural Organization of Gait Initiation for Biomechanical Analysis Using Force Platform Recordings
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Postural Organization of Gait Initiation for Biomechanical Analysis Using Force Platform Recordings

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一个静态姿势学指南,用于实施时间到边界.

Sutton B Richmond1, Kevin D Dames2

  • 1Department of Applied Physiology and Kinesiology, University of Florida, 1864 Stadium Rd., Gainesville, FL 32608, USA.

Journal of biomechanics
|March 19, 2024
PubMed
概括

本研究引入了用于时间到边界分析的增强方法和公开可访问的代码,改进了对姿势控制的评估. 这些进展旨在为研究人员标准化这个时空尺度.

科学领域:

  • 生物力学 生物力学
  • 人类运动科学科学 人类运动科学
  • 发动机控制器的控制器

背景情况:

  • 时间到边界是评估姿势控制的时空特征的一个有价值的指标.
  • 现有的文献对使用时间到边界的研究人员来说存在不一致性和方法挑战.
  • 之前的实现需要手动将基于文本的描述解释为计算脚本.

研究的目的:

  • 介绍方法上的进步,以提高时间到边界的测量.
  • 首次公开发布时间到极限代码.
  • 为研究人员提供全面的指南,以提高对姿势控制分析的采用和理解.

主要方法:

  • 开发用于时间到边界计算的增强算法.
  • 创建一个公开可访问的计算脚本用于时间到边界分析.
  • 方法进步和编码组件的详细文档.

主要成果:

  • 该研究提供了一种精细和标准化的方法来计算时间到边界.
  • 公开发布的代码有助于更容易和更一致地应用该措施.
  • 方法学的进步解决了调查人员以前的陷和编码障碍.

结论:

关键词:
资产负债表的平衡情况压力中心的压力中心姿势控制 姿势控制时间到边界的时间.

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Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
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  • 增强的时间到边界的方法和可访问的代码将促进更广泛的采用和更严格的研究姿势控制.
  • 标准化分析提高了研究结果的可靠性和可比性.
  • 未来的研究可以在这些进展的基础上对人类运动进行更深入的洞察.