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Related Concept Videos

Work01:14

Work

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.
Work01:22

Work

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...
Power01:08

Power

The concept of work involves force and displacement; meanwhile, the work-energy theorem relates the net work done on a body to the difference in its kinetic energy, calculated between two points on its trajectory. While none of these quantities or relations involves time explicitly, we know that the time available to accomplish work is often just as important as the amount of work itself. For example, sprinters in a race may have achieved the same velocity at the finish, therefore,...
Workability of Concrete01:25

Workability of Concrete

The workability of concrete is a crucial property that affects its handling, placing, and finishing during construction. It describes the ease with which concrete can be mixed, placed, compacted, and finished. Workability is primarily concerned with the concrete's movement and its ability to resist internal friction and external resistance from molds and reinforcements during the application process.
Concrete's workability is determined by its resistance to internal forces that arise when...
Positive, Negative, and Zero Work00:58

Positive, Negative, and Zero Work

Work is done on an object when energy is transferred to the object. In other words, work is done when a force acts on a body that undergoes a displacement from one position to another. By definition, the work done by a force is the integral of the force with respect to the displacement along its path. Forces can vary as a function of position, and displacements can occur along various paths between two points. The magnitude of a force multiplied by the cosine of the angle that the force makes...
Factors Affecting Workability01:24

Factors Affecting Workability

The workability of concrete is a critical characteristic that influences the ease of mixing, handling, and finishing the concrete. It is affected by several factors including water content, aggregate properties, and admixtures like air entrainment. Water plays a fundamental role as it lubricates the concrete mix, facilitating easier movement and placement. However, the water requirement varies depending on the texture and shape of aggregates. Finer particles and angular, rough-textured...

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The concept of work ability.

Per-Anders Tengland1

  • 1Department of Public Health, Health and Society, Malmö University, Sweden. Per-Anders.Tengland@mah.se

Journal of Occupational Rehabilitation
|November 6, 2010
PubMed
Summary

This study defines work ability, crucial for rehabilitation and sickness insurance legislation. It proposes two definitions: one for specialized jobs and another for general employment, aiding in evaluation and strategy development.

Area of Science:

  • Occupational Health
  • Rehabilitation Science
  • Social Insurance Law

Background:

  • Work ability is a key concept in working life sciences, rehabilitation, and sickness insurance legislation.
  • The definition of work ability has significant normative implications but is often insufficiently defined.
  • Existing definitions lack clarity, necessitating a conceptual analysis for practical application.

Purpose of the Study:

  • To clarify the meaning of work ability through conceptual analysis.
  • To propose a useful definition for both scientific research and practical work settings.
  • To critically examine defining characteristics such as health, competence, and motivation.

Main Methods:

  • Conceptual analysis of the term "work ability".

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  • Critical scrutiny of literature-based defining characteristics: health, basic standard competence, occupational competence, occupational virtues, and motivation.
  • Relating these characteristics to work tasks and the work environment.
  • Main Results:

    • Two distinct definitions of work ability are proposed.
    • Definition 1 (specific jobs): Requires occupational competence, requisite health, and occupational virtues for demanding tasks in acceptable environments.
    • Definition 2 (general jobs): Requires health, basic standard competence, and relevant occupational virtues for manageable tasks in acceptable environments.

    Conclusions:

    • The proposed definitions offer a framework for understanding the complex, holistic, and dynamic nature of work ability.
    • These definitions can inform the development of work ability evaluation instruments.
    • The findings support the formulation of effective rehabilitation strategies.