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Related Concept Videos

Virtual Work01:20

Virtual Work

894
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...
894
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,...
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Cognitive Learning01:21

Cognitive Learning

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Cognitive learning is based on purposive behavior, incidental learning, and insight learning.
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
459
Visual System01:26

Visual System

628
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
628
Health Information Technology and Healthcare Information System01:30

Health Information Technology and Healthcare Information System

883
Health Information Technology (HIT)
Health Information Technology, commonly called HIT, integrates advanced information systems and technology in healthcare settings. Its primary functions include:
883
Virtual Work for a System of Connected Rigid Bodies01:06

Virtual Work for a System of Connected Rigid Bodies

435
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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WAVE: A Web-Based Platform for Delivering Knowledge-Driven Virtual Experiences.

Sachin Shah, Kamran Ali, Lisa Dieker

    IEEE Computer Graphics and Applications
    |May 17, 2023
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    Summary
    This summary is machine-generated.

    This study introduces the Web Automated Virtual Environment (WAVE), a new platform making virtual characters accessible for education. WAVE offers automated, adaptive virtual experiences online, overcoming cost and scalability barriers for wider adoption.

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    Area of Science:

    • Educational Technology
    • Human-Computer Interaction
    • Artificial Intelligence in Education

    Background:

    • Virtual characters show educational promise but face adoption hurdles due to high development costs and limited accessibility.
    • Existing human-in-the-loop models for virtual character control are difficult to scale for widespread educational use.

    Purpose of the Study:

    • To introduce the Web Automated Virtual Environment (WAVE) platform for delivering accessible virtual character experiences.
    • To demonstrate how WAVE enables automated, context-aware behaviors in virtual characters for educational support.
    • To address the scalability limitations of current virtual character systems in education.

    Main Methods:

    • Development of the WAVE platform, a web-based system for creating and deploying virtual environments.
    • Integration of diverse data sources to enable virtual characters to understand user activities and emotional states.
    • Implementation of automated character behaviors triggered by system analysis, reducing reliance on constant human input.

    Main Results:

    • WAVE provides a scalable solution for deploying virtual characters through a web interface.
    • The platform facilitates virtual characters exhibiting contextually appropriate behaviors, including emotional and activity-based support.
    • WAVE overcomes the scalability challenges associated with the human-in-the-loop model.

    Conclusions:

    • The WAVE platform offers a novel, accessible, and scalable solution for integrating virtual characters into educational settings.
    • By leveraging web technologies and automated behaviors, WAVE reduces development costs and enhances accessibility.
    • WAVE is freely available as Open Education Resources, promoting anytime, anywhere access to advanced virtual learning tools.