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相关概念视频

Principle of Virtual Work: Problem Solving01:13

Principle of Virtual Work: Problem Solving

1.3K
The principle of virtual work is an essential concept in the field of mechanics and engineering. This is used to solve problems related to the equilibrium of a structure or system. It is based on the assumption that if a system is in equilibrium, the work done by all the forces during a virtual displacement is zero. This principle is applied by considering virtual displacements of the system and the corresponding work done by internal and external forces.
To apply the principle of virtual work,...
1.3K
Virtual Work for a System of Connected Rigid Bodies01:06

Virtual Work for a System of Connected Rigid Bodies

471
Virtual work is a powerful method used to solve problems involving several connected rigid bodies. When the system is in equilibrium, virtual work is zero. This allows the calculation of the resulting forces when a system undergoes a virtual displacement. When attempting to analyze such a system, first, use a free-body diagram, where an independent coordinate represents the configuration of the links, and mark its deflected position resulting from the positive virtual displacement.
Next,...
471
Social Facilitation01:04

Social Facilitation

32.8K
Not all intergroup interactions lead to negative outcomes. Sometimes, being in a group situation can improve performance. Social facilitation occurs when an individual performs better when an audience is watching than when the individual performs the behavior alone. This typically occurs when people are performing a task for which they are skilled.
32.8K

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相关实验视频

Updated: Sep 10, 2025

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation
06:53

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation

Published on: March 1, 2017

13.4K

问题难度和专业知识在虚拟体现任务中调节规划性能

Riccardo Moretti1,2, Jeremy Gordon3, Antonella Maselli4

  • 1Institute of Cognitive Sciences and Technologies, National Research Council, Rome, Italy.

Journal of neurophysiology
|August 27, 2025
PubMed
概括
此摘要是机器生成的。

经验丰富的登山者在岩石登山中表现出卓越的认知和运动规划能力,比初学者更有效地规划路线,特别是在困难的问题上. 专业知识提高了对物理要求较高的任务的规划深度和策略.

关键词:
经济发展岩石制造爬山活动专业知识进行规划

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Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another
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Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another

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Characterization of the Sense of Agency over the Actions of Neural-machine Interface-operated Prostheses
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Characterization of the Sense of Agency over the Actions of Neural-machine Interface-operated Prostheses

Published on: January 7, 2019

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相关实验视频

Last Updated: Sep 10, 2025

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation
06:53

Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation

Published on: March 1, 2017

13.4K
Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another
05:12

Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another

Published on: September 18, 2017

546.7K
Characterization of the Sense of Agency over the Actions of Neural-machine Interface-operated Prostheses
05:21

Characterization of the Sense of Agency over the Actions of Neural-machine Interface-operated Prostheses

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科学领域:

  • 认知心理学
  • 发动机控制
  • 运动科学

背景情况:

  • 对于像石这样的苛刻任务的专业知识与规划能力有关.
  • 在石运动中,认知和运动规划之间的相互作用尚未得到充分理解.

研究的目的:

  • 研究专业知识如何影响路线规划.
  • 研究问题难度对规划准确性和策略的影响.

主要方法:

  • 专家和初学者几乎解决了容易和困难的岩石问题.
  • 一个定制的应用程序被用来计划和选择手动序列.

主要成果:

  • 登山者在更难的问题上表现得更慢,更不准确,
  • 专家比新手更少严重的规划错误和更快的解决问题.
  • 在易于解决的问题上,新手会犯更多的短视错误.

结论:

  • 专业知识显著调整了认知和运动规划之间的关系.
  • 规划深度和策略在物理限制的环境中至关重要.
  • 对体现模拟的进一步研究可以阐明专家的性能机制.