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IE383_Extra exercise for Midterm 2_Sol

# IE383_Extra exercise for Midterm 2_Sol - (2(2 B-2(2 IE383(3...

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(2) (2) B-2 (2) (3) (1) C-2 (2) C-1 D-1 D-2 (1) (3) (1) D-1 D-2 (1) (1) D-1 (2) IE383 Extra exercise for Midterm 2 solution Problem 1 Compare push and pull systems under two situations “no input” and “no demand” by completing the following table. Indicate under each situation whether each type of system is running normally or abnormally. If abnormally, indicate the specific problem. No input No demand Push Idle (normal) Machine blocked Pull Shortage occurs Idle (normal)

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IE383 Extra exercise for Midterm 2 solution Problem 2 Year 1 2 3 4 5 6 7 8 Demands 2 4 8 16 32 64 128 256 We believe the data follow model = a * 2bt , forecast the data for year 10 and 11 by using exponential smoothing with = . α 0 4 . Answer: Pay attention that the model is different than before but the approach does not change basically. We can transform the model = Y a2bt into linear model = + lg2Y lg2a bt , then the exponential smoothing can be applied to the linear model = + Y' a' bt , where = = Y' lg2Y and a' lg2a .
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IE383_Extra exercise for Midterm 2_Sol - (2(2 B-2(2 IE383(3...

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