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相关概念视频

Velocity and Position by Graphical Method01:34

Velocity and Position by Graphical Method

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Velocity and position can be calculated from the known function of acceleration as a function of time. The total area under the acceleration-time graph and the velocity-time graph gives the change in velocity and position, respectively. In the case of an airplane, its acceleration is tracked using the inertial navigation system. The pilot provides the input of the airplane's initial position and velocity before takeoff. The inertial navigation system then uses the acceleration data to...
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Absolute Motion Analysis- General Plane Motion01:24

Absolute Motion Analysis- General Plane Motion

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Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
193
Relative Motion Analysis - Velocity01:24

Relative Motion Analysis - Velocity

327
A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
327
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

433
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
433
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

369
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
369
Relative Motion Analysis - Acceleration01:10

Relative Motion Analysis - Acceleration

313
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
313

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相关实验视频

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Video Movement Analysis Using Smartphones ViMAS: A Pilot Study
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维格玛:用于视觉步行和运动分析的开放访问框架.

Kazi Shahrukh Omar, Shuaijie Wang, Ridhuparan Kungumaraju

    IEEE transactions on visualization and computer graphics
    |April 28, 2025
    PubMed
    概括

    维格玛是一个开放访问的视觉分析框架,旨在简化复杂的步态数据分析. 它有助于研究人员和临床医生了解流动性,改善患者护理,并有效地跟踪康复进展.

    科学领域:

    • 生物力学和康复工程 生物力学和康复工程
    • 人类运动科学科学 人类运动科学
    • 数据可视化和分析数据

    背景情况:

    • 步态障碍在老年人中很普遍,是不同人群的关键研究领域.
    • 有效的步态分析对于理解移动性,平衡和康复结果至关重要.
    • 当前的步态分析工具往往具有限制性,缺乏可访问性和全面的工作流支持.

    研究的目的:

    • 为了解决现有的步态分析工具的局限性.
    • 开发一个开放访问的框架,满足步行从业者的数据处理,分析和可视化需求.
    • 为了支持疾病进展评估和多组比较在步态研究.

    主要方法:

    • 通过调查与步行从业人员进行了需求评估.
    • 设计了VIGMA,一个开放访问的视觉分析框架.
    • 集成的VIGMA与计算笔记本和一个Python库.

    主要成果:

    • 维格玛为步态数据处理,分析和可视化提供了全面的解决方案.
    • 该框架支持先进的分析能力,包括疾病进展跟踪和比较群组分析.
    • 用户与步行和移动性康复专家的验证证实了该框架的实用性.

    更多相关视频

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    相关实验视频

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    Comprehensive Understanding of Inactivity-Induced Gait Alteration in Rodents
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    Comprehensive Understanding of Inactivity-Induced Gait Alteration in Rodents

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    结论:

    • 维格玛为复杂的步行数据分析提供了灵活和可访问的解决方案.
    • 该框架提高了对步态障碍的理解,并促进了个性化康复策略.
    • 维格玛促进人类运动科学领域的协作研究和临床实践.