If a Side Constraint for a Network Flow Model Cannot

question 61

Multiple Choice

If a side constraint for a network flow model cannot be avoided,and non-integer solutions result,how can the solution be expressed as an integer solution?

• A)Force all the arc flow decision variables to be integer.
• B)Round off all the non-integer arc flow decision variables.
• C)Increase the supply until the solutions are all integer using a dummy supply node.
• D)Increase the demand until the solutions are all integer using a dummy demand node.

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Definitions:

Metabolic Equivalents

A physiological measure expressing the energy cost of physical activities as multiples of the metabolic rate at rest.

Moderate-intensity Activity

Physical activities that elevate the heart rate and breathing but still allow for conversation, such as brisk walking or light cycling.

Cardiovascular Exercise

Any form of sustained physical activity that strengthens the heart and improves the efficiency of the cardiovascular system in pumping blood throughout the body.

Intensity

Refers to the extent of strength or force involved in an activity or phenomenon.