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Related Concept Videos

Work01:14

Work

855
Work is a fundamental concept of mechanical engineering and has many applications. Understanding how work is calculated and the different types of work can help us better understand physical processes and provide insights into complex problems.
Work is defined as the result of a force acting on an object, causing it to move along the line of action of force. It is also defined as the process of transferring energy through the application of force on an object, resulting in its displacement.
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Work01:22

Work

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Work is done when energy is transferred from one object to another. In other words, work is when a force acts on something that undergoes a displacement from one position to another. Forces can vary as a function of position, and displacements can be along various paths between two points. The increment of work (dW) done by a force acting through an infinitesimal displacement can be defined as the dot product of force () and displacement () vectors.
The dot product can be expressed in terms of...
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As a system undergoes a change, its internal energy can change, and energy can be transferred from the system to the surroundings, or from the surroundings to the system.
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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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Social Loafing01:37

Social Loafing

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Another way in which a group presence can affect performance is social loafing—the exertion of less effort by a person working together with a group. Social loafing occurs when our individual performance cannot be evaluated separately from the group. Thus, group performance declines on easy tasks (Karau & Williams, 1993). Essentially individual group members loaf and let other group members pick up the slack. Because each individual’s efforts cannot be evaluated,...
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Lumber Defects01:23

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Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
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Related Experiment Video

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Simulation of a Scaled Assembly Process with Collaboration of a Robotic Arm and Monitoring through a Vision System for Quality Control
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Picture of a 'broken' workforce.

Nick Evans

    Nursing Older People
    |September 30, 2016
    PubMed
    Summary

    District nurse numbers in England have significantly decreased. A 48% drop from 2000 to 2014 resulted in fewer than 6,000 full-time positions, impacting community healthcare services.

    Area of Science:

    • Healthcare Workforce Studies
    • Nursing Demographics
    • Public Health Policy

    Background:

    • The number of district nurses in England has experienced a notable decline.
    • This trend has significant implications for community-based healthcare delivery and patient support.

    Purpose of the Study:

    • To highlight the extent of the reduction in district nurse numbers.
    • To underscore the potential impact on healthcare services in England.

    Main Methods:

    • Analysis of workforce data for district nurses in England.
    • Comparison of employment figures between 2000 and 2014.

    Main Results:

    • A 48% decrease in district nurse positions was observed between 2000 and 2014.

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  • Full-time district nurse roles fell to below 6,000 during this period.

    • Conclusions:

    • The substantial drop in district nurses poses a challenge to community healthcare.
    • Urgent attention to nursing workforce planning is needed to address this decline.