Methods that measure the strength of a stimulus and the observer's sensitivity to that stimulus are collectively referred to as

The answer is psychophysics.

Explanation:

Psychophysics study the relation between a certain stimulus, the effects it produces and how they are perceived by a person. Usually, researchers use stimuli that can be accurately measured, such as variations in sound frequencies or light intensity.

The perception of all senses can be measured by psychophysics, including the sense of time.  

the answer is a wheel

it brings together the military and civilian sectors of society to harness the total power of the nation. it is the mechanism that facilitates the successful prosecution of any conflict.it brings together the military and civilian sectors of society to harness the total power of the nation. it is the mechanism that facilitates the successful prosecution of any conflict.