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Effectiveness or effectivity [1] is the capability of producing a desired result or the ability to produce desired output. When something is deemed effective , it means it has an intended or expected outcome, or produces a deep, vivid impression.
Efficacy is the ability to perform a task to a satisfactory or expected degree. The word comes from the same roots as effectiveness, and it has often been used synonymously, although in pharmacology a distinction is now often made between efficacy and effectiveness.
Combat effectiveness is the capacity or performance of a military force to succeed in undertaking an operation, mission or objective. [1] Determining optimal combat effectiveness is crucial in the armed forces, whether they are deployed on land, air or sea.
Positive affectivity (PA) is a human characteristic that describes how much people experience positive affects (sensations, emotions, sentiments); and as a consequence how they interact with others and with their surroundings.
Reported timeline of research solar cell energy conversion efficiencies since 1976 (National Renewable Energy Laboratory). Solar-cell efficiency is the portion of energy in the form of sunlight that can be converted via photovoltaics into electricity by the solar cell.
Efficiency is the often measurable ability to avoid making mistakes or wasting materials, energy, efforts, money, and time while performing a task.In a more general sense, it is the ability to do things well, successfully, and without waste.
In science, an effective theory is a scientific theory which proposes to describe a certain set of observations, but explicitly without the claim or implication that the mechanism used by the theory has a direct counterpart in the actual causes of the observed phenomena to which the theory is fitted.
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