Invoice m1 2minapp two approaches recources capacity

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Unformatted text preview: time it takes a flow unit to go through the process • Inventory: The number of flow units in the system Processes with Multiple Flow Units DF m=2 20min/app File m=1 3min/app ➡ ➡ ➡ Foreign: 3 case/hour Regular: 11 case/hour EZ: 4 case/hour D1 m=3 15min/app D2 m=2 8min/app Print! Invoice m=1 2min/app Two approaches Recources Capacity [app/ h] File Foreig n 20 3 DF 6 12 3 D2 15 Print 30 Recource s File 11 9 DF 120 180 45 D2 4 14 1.167 4 0.267 4 11 Regular EZ 120 60 0.5 18 0.6 11 12 Demand/Cap = Implied utilization 54 0.9 60 0.5 210 1.167 32 6 33 Total workload [min] 60 D1 0.9 3 3 Available time [min] Foreig n 18 4 60 Print Total [app/h] Demand/Cap = Implied utilization 3 D1 Regular EZ 32 0.267 8 36 0.6 165 22 Steps for Basic Process Analysis with Multiple Types of Flow Units 1. For each resource, compute the number of minutes that the resource can produce 2. Create a process flow diagram, indicating how the flow units go through the process 3. Create a table indicating how much workload each flow unit is consuming at each resource 4. Add up the workload of each resource across all flow units. 5. Compute the implied utilization of each resource as Result of Step 3 implied utilization = Result of Step 1 What is bottle neck? Process Flow Optimization I III 1 min • II 2 min 1.2 min Restructure the flow to optimize Part 9: Demand Forecasting Forecasting Horizons Long Term! • 5+ years into the future • R&D, plant location, product planning • Principally judgement-based Medium Term! • 1 season to 2 years • Aggregate planning, capacity planning, sales forecasts • Mixture of quantitative methods and judgement Short Term! • 1 day to 1 season • Operational: staffing levels, purchasing, inventory levels • Quantitative methods Algorithm 4: Exponential Smoothing with Trend & Seasonality Ideas behind smoothing with trend: • ``De-trend'' and “de-seasonalize” time-series by separating base from trend and seasonality e...
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