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Related Concept Videos

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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Principle of Virtual Work: Problem Solving01:13

Principle of Virtual Work: Problem Solving

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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 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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Nursing Clinical Information System01:27

Nursing Clinical Information System

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Nursing Clinical Information System (NCIS)
A Nursing Clinical Information System (NCIS) is a specialized type of healthcare information system tailored to meet the unique needs of nursing practice. It incorporates the principles of nursing informatics to streamline information management and improve the quality of care delivery.
Critical attributes of NCIS include:
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Clinical Trials01:16

Clinical Trials

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Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
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Clinical Trials: Overview01:11

Clinical Trials: Overview

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Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
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Related Experiment Video

Updated: Feb 3, 2026

The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project
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Virtual Reality Clinical Research: Promises and Challenges.

Bernie Garrett1, Tarnia Taverner1, Diane Gromala2

  • 1School of Nursing, University of British Columbia, Vancouver, BC, Canada.

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Virtual reality (VR) therapy shows promise across many conditions, but clinical research faces significant hurdles. Addressing issues in research design is crucial for rigorous VR clinical studies and impactful findings.

Keywords:
VR immersionVR presenceVR standardsVR theoryclinical researchvirtual reality

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Area of Science:

  • Medical Technology
  • Clinical Research
  • Digital Health

Background:

  • Virtual reality (VR) therapy utilizes immersive 3D environments for real-time patient interaction.
  • Previous studies indicate positive outcomes for VR in treating anxiety, addictions, phobias, PTSD, eating disorders, stroke rehabilitation, and pain management.

Purpose of the Study:

  • To identify and discuss critical challenges in the implementation of clinical research for virtual reality (VR) technologies.
  • To inform the development of more robust clinical VR research methodologies.

Main Methods:

  • A narrative review of current clinical VR research was conducted.
  • The study incorporates the researchers' practical experience in VR clinical research with chronic pain patients.
  • A discussion paper format was used to synthesize findings.

Main Results:

  • Key challenges include theoretical immaturity and a lack of technical standards in VR research.
  • Separating media effects from medium effects and practical in vivo issues present significant implementation problems.
  • High costs associated with VR technology deployment are a considerable barrier.

Conclusions:

  • Despite reported successes, implementing clinical VR research outside controlled settings faces substantial challenges.
  • Rigorous research design and thorough pilot studies are essential to overcome these obstacles.
  • Addressing identified issues will enhance the rigor and clinical significance of VR research findings.