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相关概念视频

Principle of Virtual Work: Problem Solving01:13

Principle of Virtual Work: Problem Solving

1.1K
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,...
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Virtual Work01:20

Virtual Work

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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...
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Survey Safety01:28

Survey Safety

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Surveying near highways, rough terrain, or power lines involves significant risks. Working along highways is particularly dangerous and requires the use of warning signs and flagmen. It is safest to avoid working directly on roads and use offsets whenever possible. When highway work is unavoidable, it must follow all safety guidelines. Surveyors should wear bright clothing, such as orange reflective vests, to ensure visibility to motorists, coworkers, and hunters. In construction zones, wearing...
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Guidelines and Strategies for Safe Computer Charting01:18

Guidelines and Strategies for Safe Computer Charting

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The guidelines and strategies provided by the American Nurses Association (ANA) and the Canadian Nurses Association (CNA) offer essential principles for ensuring safe and secure computer charting systems in healthcare settings. Let's break down each recommendation:
Maintain Confidentiality and Security:
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Virtual Work for a System of Connected Rigid Bodies01:06

Virtual Work for a System of Connected Rigid Bodies

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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,...
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Purposive Learning01:22

Purposive Learning

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E. C. Tolman emphasized the purposiveness of behavior — the idea that much of our behavior is goal-directed. For instance, employees who aim for a promotion work diligently to meet their targets. Tolman argued that when classical conditioning and operant conditioning occur, the organism acquires certain expectations. In classical conditioning, a child might fear a dog because they expect it to bite. In operant conditioning, a person might consistently work overtime because they expect a...
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相关实验视频

Updated: Jun 20, 2025

Author Spotlight: Enhancing Engineering Education via WebVR-Based Online Laboratories
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Author Spotlight: Enhancing Engineering Education via WebVR-Based Online Laboratories

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通过虚拟学习协作提高安全性

Jeffrey P Durney1, Katie M Catalano1, D Marlowe Miller2

  • 1From the Department of Pediatrics, Boston Children's Hospital, Boston, Mass.

Pediatric quality & safety
|July 22, 2024
PubMed
概括
此摘要是机器生成的。

一个虚拟的安全学习协作改善了医疗保健领导人对管理安全计划的信心和技能. 这一举措导致了15个安全项目的开发,并减少了患者的伤害事件.

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A Networked Desktop Virtual Reality Setup for Decision Science and Navigation Experiments with Multiple Participants
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科学领域:

  • 改善医疗保健质量 改善医疗保健质量
  • 患者安全研究的研究.
  • 医疗教育和培训 医疗教育和培训

背景情况:

  • 前线医疗保健领导者在识别风险和减少患者伤害方面面临挑战.
  • 地方安全计划的有效管理需要专业知识和信心.
  • 需要加强战略,以支持医疗保健安全领导者.

研究的目的:

  • 评估多学科安全学习协作对医疗保健领导者的信心和提高安全能力的影响.
  • 评估儿科部门内安全改进项目的发展情况.
  • 为了测量协作干预后患者安全事件率的变化.

主要方法:

  • 使用卫生保健改进研究所的突破系列模型实施了一个虚拟安全学习协作.
  • 参与者参与了虚拟教育课程,重点关注危害识别和安全改进工具.
  • 每个月分析部门的安全数据,并通过调查前后评估参与者的信心.

主要成果:

  • 70名临床医生和质量顾问参与,启动了15个部门安全改进项目.
  • 对提高安全性的信心从26%显著增加到58% (P = 0.01),并在合作后保持在65%.
  • 观察到,每1000个入院日报告的住院可预防事件的平均率从1.10降至0.71.

结论:

  • 一种协作式的虚拟学习方法促进了安全项目的创建,并增强了领导者的信心.
  • 这项干预措施导致了住院患者安全结果的可衡量的改善.
  • 这种多学科模型显示了在各种医疗保健环境中适应的潜力,以支持患者安全倡议.