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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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What is Behavior?00:54

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Behaviors are actions that an organism engages in—they can be related to finding food, reproducing, defending against threats, and many other possible actions. Behaviors include activities related to the environment around the animal—such as migration—as well as social interactions within a species or population. Many behaviors involve motor output—that is, muscle movements—while others involve less visible actions, such as learning.
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Principle of Virtual Work: Problem Solving01:13

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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.
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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.
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Behaviorism01:28

Behaviorism

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The field of behaviorism was pioneered by figures such as Ivan Pavlov, John B. Watson, and B.F. Skinner fundamentally shifted the focus of psychology to the observable and controllable aspects of human and animal behavior. This shift marked a critical evolution in the discipline, emphasizing scientific rigor and experimental methodology.
The core premise of behaviorism is its focus on observable behavior rather than internal thoughts or feelings. This approach argues that true scientific...
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Plastic Behavior01:21

Plastic Behavior

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A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
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Using a Virtual Store As a Research Tool to Investigate Consumer In-store Behavior
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Behavior analysis of virtual-item gambling.

Xiangwen Wang1,2,3,4, Michel Pleimling1,2,5

  • 1Department of Physics, Virginia Tech, Blacksburg, Virginia 24061-0435, USA.

Physical Review. E
|August 17, 2018
PubMed
Summary

Online lottery players

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Area of Science:

  • Complex systems analysis
  • Statistical modeling of gambling behavior

Background:

  • Online lottery games generate extensive gambling logs.
  • Player income changes can be modeled as random walks.

Purpose of the Study:

  • To analyze probability distributions and correlations in lottery data.
  • To model player income dynamics using random-walk theory.

Main Methods:

  • Extracting probability distributions and correlations from gambling logs.
  • Modeling net player income as a random walk.
  • Analyzing mean-squared displacement and first-passage time distributions.

Main Results:

  • Observed a transition in mean-squared displacement from superdiffusion to normal diffusion.
  • Developed random-walk models with truncated power-law step lengths.
  • Reproduced key properties of the gambling logs with these models.

Conclusions:

  • Player income dynamics in online lotteries exhibit a crossover from superdiffusion to normal diffusion.
  • Truncated power-law distributions are crucial for modeling this diffusion crossover.