For the following case study please answer the following:

• Determine the selected operation's volume - variety profile.
• Derive the selected operations performance objectives (draw its polar diagram)

Short case YO! Sushi YO! Sushi are sushi restaurants with an accent on style. They also employ technology to create their unique atmosphere. Prepared dishes are circulated around the sitting area on a moving conveyor. Customers simply take what they want as they pass by. In fact this idea goes back to 1958 when Yoshiaki Shiraishi saw beer bottles moving down an Asahi brewery conveyor. Wanting to cut overheads in his restaurant, he developed the idea of the rotating conveyor belt. Originally known as 'satellite- turning-around-sushi' (rough translation), he calculated that the dishes should move at a rate of 8 centimetres per second. No more, no less. Any slower and customers get bored and the food may dry out. Any faster and customers do not have time to decide and the food may fly off the belt. At YO! Sushi tables also have personal metered beer taps but also a 1 metre high automated moving trolley, which stocked with drinks glides gently through the eating area inciting customers to 'stop me if you wish. Source Jonathan Roberts A moving belt used to serve customers at YO! Sushi restaurant