Quantitative process analysis exercises (more).docx

# 4 586586 days theoretical cycle time tct loop t2 1

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CTbp=CT parallel=max(CT exclusive, CT loop+T3)=max(3.4, 5.86)=5.86 days Theoretical cycle time TCT loop = t2 /(1-30%)=2/70%=2.86 hours TCT loop+T3=TCT loop+t3=2.86+3=5.86 hours TCT exclusive OR= 20%*t1+80%*t4=20%*1+80%*2=1.8 hours TCTbp=TCT parallel=max(TCT exclusive, TCT loop+T3)=max(1.8, 5.86)=5.86 hours Efficiency rate=TCTbp/CTbp=5.86 hours/5.86 days =5.86hours /(5.86*7.5 hours)=13.33%

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The converted process owns the exactly the same execution logic with the original one, and it consists of standard sequential, exclusive or split/join and loop structures only. This enables us to apply the given formulas to work out the cycle time of the business process. Average cycle time CT loop body = t3+t1+t2=3+1+2=6 days CT loop = 6/(1-20%)=7.5days CT exclusive OR = 80%*0+20%*CTloop=0+20%*7.5=1.5days CTbp=t1+t2+CTexclusive OR=1+2+1.5=4.5days Theoretical cycle time TCT loop body = t3+t1+t2=3+1+2=6 hour TCT loop = 6/(1-20%)=7.5 hours TCT exclusive OR = 80%*0+20%*TCTloop=0+20%*7.5=1.5 hours TCTbp=t1+t2+TCTexclusive OR=1+2+1.5=4.5 hours Efficiency rate=TCTbp/CTbp=4.5hours / 4.5 days=4.5 hours/ (4.5*7.5 hours)=13.33%
• Spring '16
• average cycle time

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