上海交通大学试卷（A卷) (2010至2011学年第2学期) 班级号 学号 姓名 课程名称 Production and Operations Analysis 成绩 1.Ch2 A Handy,Inc.,produces a solar-powered electronic calculator that has experienced the following monthly sales history for the first four months of the year,in thousands of units: January 23.3 March 30.3 February 72.3 April 15.5 a.If the forecast for January was 25,determine the one-step-ahead forecasts for February through May using exponential smoothing with a smoothing constant of b.Repeat the calculation in part(a)for a value of a=.What difference in the forecasts do you observe? c.Compute the MSEs for the forecasts you obtained in part(a)and(b)for February through April.Which value of gave more accurate forecasts,based on the MSE? 2.Ch7 Two end products,EPI and EP2,are produced in the Raleigh,North Carolina,plant of a large manufacturer of furniture products located in the Southeast.The product structure diagrams for these products appear in following Figure. EP2 EP1 C43) D1) E1) 2weeks 1week 1 week B(2) A(1) F2) 2 weeks Iweek 2weeks G(2 H(1) F(3) Gf3 H(2) 1 weeks 2 weeks 2weeks 3weeks 2weeks Suppose that the master production schedules for these two products are Week 18 19 20 21 22 23 24 EP1 120 112 76 22 56 90 210 EP2 62 68 90 77 26 30 54 Assuming lot-for-lot production,determine the planned order releases for components F,G and H 3.CH8 Barbara and Jenny's Ice Cream Company produces four different flavors of ice cream: vanilla,chocolate,strawberry,and peanut fudge.Each batch of ice cream is produced in the A卷总3页第页A 卷 总 3 页 第 页 上 海 交 通 大 学 试 卷（ A 卷） （ 2010 至 2011 学年 第 2 学期 ） 班级号____________ 学号 ______________________ 姓名 __ 课程名称 Production and Operations Analysis 成绩 ___ 1. Ch2 A Handy, Inc., produces a solar-powered electronic calculator that has experienced the following monthly sales history for the first four months of the year, in thousands of units: January 23.3 March 30.3 February 72.3 April 15.5 a. If the forecast for January was 25, determine the one-step-ahead forecasts for February through May using exponential smoothing with a smoothing constant of . b. Repeat the calculation in part (a) for a value of . What difference in the forecasts do you observe? c. Compute the MSEs for the forecasts you obtained in part (a) and (b) for February through April. Which value of gave more accurate forecasts, based on the MSE? 2. Ch7 Two end products, EP1 and EP2, are produced in the Raleigh, North Carolina, plant of a large manufacturer of furniture products located in the Southeast. The product structure diagrams for these products appear in following Figure. Suppose that the master production schedules for these two products are Week 18 19 20 21 22 23 24 EP1 120 112 76 22 56 90 210 EP2 62 68 90 77 26 30 54 Assuming lot-for-lot production, determine the planned order releases for components F, G and H. 3. CH8 Barbara and Jenny’s Ice Cream Company produces four different flavors of ice cream: vanilla, chocolate, strawberry, and peanut fudge. Each batch of ice cream is produced in the