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Related Concept Videos

Virtual Work01:20

Virtual Work

1.5K
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...
1.5K
Virtual Work for a System of Connected Rigid Bodies01:06

Virtual Work for a System of Connected Rigid Bodies

839
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,...
839

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Related Experiment Video

Updated: Mar 26, 2026

Virtual Reality Experiments with Physiological Measures
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Virtual Reality Experiments with Physiological Measures

Published on: August 29, 2018

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On Virtual Presence.

Valarie S Grumme1, Charlotte D Barry, Shirley C Gordon

  • 1C. E. Lynn College of Nursing, Florida Atlantic University, Boca Raton, Florida.

ANS. Advances in Nursing Science
|February 3, 2016
PubMed
Summary
This summary is machine-generated.

Virtual nursing care expands practice to new environments, challenging traditional nurse-patient interactions. This study explores how nursing presence can be maintained and validated in virtual settings, offering a new understanding of care beyond physical proximity.

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Area of Science:

  • Nursing
  • Health Informatics
  • Digital Health

Background:

  • Healthcare and communication technologies enable nursing practice in non-traditional settings.
  • Nurses are increasingly establishing nurse-patient relationships in virtual/distance environments across various specialties.
  • The physical presence of the nurse is not always possible in these evolving care settings.

Purpose of the Study:

  • To explore the concept of nursing presence in virtual/distance environments.
  • To determine if nursing presence can be considered "real" when not physically present.
  • To propose a new ontology of nursing presence that is not limited by traditional constraints.

Main Methods:

  • Conceptual analysis of nursing presence.
  • Exploration of virtual/distance nursing practice models.
  • Development of a new theoretical framework (ontology) for nursing presence.

Main Results:

  • Nursing presence can be effectively established and maintained in virtual/distance settings.
  • The "reality" of nursing presence is not dependent on physical proximity.
  • A new ontology of nursing presence is proposed, extending beyond traditional limitations of people, place, space, and time.

Conclusions:

  • Nursing presence is a dynamic construct that can transcend physical limitations.
  • Virtual nursing care environments can support meaningful and "real" caring encounters.
  • The proposed ontology offers a framework for understanding and practicing nursing presence in the digital age.