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Related Concept Videos

Virtual Work01:20

Virtual Work

1.4K
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...
1.4K
Principle of Virtual Work: Problem Solving01:13

Principle of Virtual Work: Problem Solving

1.7K
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

773
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,...
773
Classification of Titrimetric Analysis Based on Reaction Types01:01

Classification of Titrimetric Analysis Based on Reaction Types

1.9K
Titrimetric analysis in solution chemistry involves measuring the volume of solutions and is often called volumetric analysis. The standard solution of known concentration in the burette is called the titrant, whereas the solution of unknown concentration in the flask is called the analyte, or titrand. Titrimetric analyses can be classified into four types based on the reactions between the titrant and analyte.
Titrations between an acid and a base lead to neutralization reactions that form...
1.9K
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy01:26

Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy

446
This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and...
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Qualitative Analysis03:46

Qualitative Analysis

25.2K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
25.2K

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A Cost-Utility Analysis Comparing Traditional Clinical, Manikin-Based Simulation, and Screen-Based Virtual Simulation Activities.

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Related Experiment Video

Updated: Feb 15, 2026

A Virtual Simulation Experiment of Mechanics: Material Deformation and Failure Based on Scanning Electron Microscopy
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A Virtual Simulation Experiment of Mechanics: Material Deformation and Failure Based on Scanning Electron Microscopy

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Cost-Utility Analysis of Virtual and Mannequin-Based Simulation.

Katie A Haerling1

  • 1From the Nursing and Healthcare Leadership, University of Washington, Tacoma WA.

Simulation in Healthcare : Journal of the Society for Simulation in Healthcare
|January 27, 2018
PubMed
Summary

Virtual simulation activities offer comparable learning outcomes to mannequin-based simulations for nursing students, with a significantly better cost-utility ratio. Further research is recommended for simulation pedagogy decisions.

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Area of Science:

  • Healthcare Education
  • Medical Simulation
  • Nursing Education

Background:

  • Simulation is a key pedagogy in healthcare education.
  • Comparing traditional mannequin-based simulation with newer virtual reality (VR) simulation is crucial for optimizing training.
  • Cost-effectiveness is a vital consideration in educational resource allocation.

Purpose of the Study:

  • To compare learning outcomes between nursing students using mannequin-based versus virtual simulation.
  • To conduct a cost-utility analysis of mannequin-based versus virtual simulation activities.
  • To inform evidence-based decisions on simulation modality selection in healthcare education.

Main Methods:

  • Randomized controlled trial comparing mannequin-based and virtual simulation for nursing students.
  • Standardized simulation scenario: care of a patient with chronic obstructive pulmonary disease exacerbation.
  • Assessment of learning outcomes through pre/post-simulation tests and performance evaluations with standardized patients.

Main Results:

  • No significant differences in quantitative learning or performance outcomes between the two simulation groups.
  • Qualitative data provided further insights into learning experiences.
  • Virtual simulation demonstrated a more favorable cost-utility ratio ($1.08) compared to mannequin-based simulation ($3.62).

Conclusions:

  • Virtual simulation offers a cost-effective alternative to mannequin-based simulation with similar learning outcomes.
  • Healthcare educators can use these findings to make informed decisions about simulation pedagogy.
  • Additional research is needed to further explore the benefits and applications of different simulation modalities.