财务管理与财务分析运营管理课件5(编辑修改稿)

财务管理与财务分析运营管理课件5(编辑修改稿)内容摘要：

’d.) Operations Management If the units in the batch do not have to stay together, starting with an empty system, it takes the first unit (20 + 1 + 2 + ) = minutes to leave the system. It takes 2 more minutes to produce the second units, because you can schedule tasks on nonbottleneck steps parallel. As you can see in the following graph, it always takes 2 minutes more to produce one more unit after the first unit. Therefore, it takes altogether + 2x19 = minutes produce 20 units. 20 22 23 25 21 First Unit Second Unit Step 1 Step 3 Step 2 Step 1 Setup Time Time Line minutes CAPACITYFLOW TIME FOR A BATCH PROCESS (Cont’d.) Operations Management PROCESS ANALYSIS WITH BATCHING • Capacity calculation changes: • Note: Capacity increases with batch size: Note further: … and so does inventory (and thus flow time) Batch Size Setup time + Batchsize*Time per unit Capacity given Batch Size= Capacity 1/p 0 10 50 90 130 170 210 250 290 330 370 410 450 490 530 570 610 650 Batch Size See chapter 5 Global Supply Chain Management Panos Kouvelis Emerson Distinguished Professor of Operations amp。 Manufacturing Management ECONOMIES OF SCALE AND OPTIMAL BATCH (LOT) SIZE DECISION Operations Management 4 Purposes of Inventory 1. To maintain independence of operations 2. To meet variation in product demand 3. To allow flexibility in production scheduling 4. To provide a safeguard for variation in raw material delivery time 5. To take advantage of economic purchaseorder size Operations Management TRADEOFFS  You cannot sell from an empty cart  OUR LINE OF CREDIT (BUDGET) WILL SUPPORT ONLY SO MUCH  $1 IN INVENTORY COSTS ABOUT $.25/YEAR  OUTOFSTOCKS = LOST SALES = LOST CUSTOMERS  IT’S IMPOSSIBLE TO FORECAST PERFECTLY Operations Management。