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相关概念视频

Virtual Work01:20

Virtual Work

876
The principle of virtual work states that if a body is in static and dynamic equilibrium, then the sum of all the virtual work done by all external forces and couple moments for any given virtual displacement must be zero.
In static equilibrium, a body can experience an imaginary or virtual movement, such as displacement or rotation. The virtual work done by a force is equal to the dot product of force and virtual displacement in the direction of the force. When it comes to virtually rotating a...
876
Principle of Virtual Work: Problem Solving01:13

Principle of Virtual Work: Problem Solving

1.2K
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,...
1.2K
Virtual Work for a System of Connected Rigid Bodies01:06

Virtual Work for a System of Connected Rigid Bodies

421
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,...
421

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相关实验视频

Updated: Jul 19, 2025

Bridging the Technology Divide in the COVID-19 Era: Using Virtual Outreach to Expose Middle and High School Students to Imaging Technology
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实习生经验反映了虚拟面试过程中收集的信息.

Jeffrey Melvin1, Hassan Beesley2, Luise I Pernar1

  • 1Avedisian School of Medicine, Boston University Chobanian, Boston, Massachusetts; Department of Surgery, Boston Medical Center, Boston, Massachusetts.

Journal of surgical education
|August 10, 2023
PubMed
概括
此摘要是机器生成的。

一般外科实习生发现,虚拟面试准确地反映了他们的培训经验,大多数人都对他们的计划感到满意. 计划印象的关键资源包括教师和居民采访.

关键词:
一场比赛是一场比赛,比赛是一场比赛.招聘工作 招聘工作 招聘工作申请居留权的申请.虚拟面试 虚拟的面试

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科学领域:

  • 医学教育 医学教育
  • 外科住院培训外科住院培训
  • 虚拟采访技术的使用

背景情况:

  • 由于COVID-19大流行,医疗住院申请需要转向虚拟面试.
  • 一般外科的申请人对通过虚拟平台收集足够的程序信息表示担忧.
  • 本研究评估了虚拟面试信息与实际实习生经验之间的一致性.

研究的目的:

  • 评估在虚拟实习生面试中提供的信息与一般外科实习生随后的经验相匹配.
  • 识别实习生在虚拟应用周期中用来形成程序印象的资源.

主要方法:

  • 在2021年虚拟周期中匹配的普通外科实习生中分发了一份调查.
  • 项目主管被要求将调查转发给他们的实习生.
  • 收集的数据包括人口统计,使用的信息资源,以及虚拟信息与内部经验的感知准确性.

主要成果:

  • 在102名接受调查的实习生中,88.2%的人表示他们的经验与虚拟面试的期望相匹配;98%的人感到满意.
  • 教师 (40.0%) 和居民 (68.0%) 的采访对于形成准确的节目印象至关重要.
  • 实习生认为他们对文化,手术量和支持有充分的了解,尽管16.7%的实习生认为有些误解.

结论:

  • 虚拟访谈提供了整体外科住院培训的一般准确预览,与实习生期望保持一致.
  • 在虚拟采访期间的教师和居民互动显著影响了课程排名和满意度.
  • 支持继续使用虚拟采访,并建议使用程序来保持现实的自我代表.