Exam 10: Operations Planning and Scheduling

The employees of Global Bike Incorporated specialized in either their mountain bike or touring bike line,but there were a few workers that were equally adept at assembling either product.For sales and operations planning purposes,the latter group could be:

The demand forecast for the next four periods is 90,100,120,and 140 units respectively.The plant has a regular capacity of 100 units per period,an overtime capacity of 10 units per period,and a subcontractor capacity of 5 units per period.There is a $5 per unit charge for regular production,an $8 per unit charge for overtime production,and a $9 per unit charge for subcontracting.The holding cost is $3 per unit per period,no shortages are allowed and the company has 5 units in inventory at the start of the planning period. a.How many units should be produced using overtime? b.How many units should be produced using subcontracting? c.What is the total inventory holding cost? d.What is the lowest total plan cost? e.Fill out this table showing the number of units made by period using each type of production and the resulting inventory at the end of each period.

Companies perform aggregation along the three dimensions of:

Table 10.6 Bluebird University provides tutoring services for undergraduate students seven days a week.The daily requirements for tutors are: Each tutor works five days a week and must have two consecutive days off,according to the contract. -Use the information in Table 10.6.How many days will have slack capacity?

A level strategy matches demand during the planning horizon by varying either the workforce level or the output rate.

Jim's Restaurant operates seven days a week.The daily requirements (in workers)are estimated as follows: Each worker is required to work five days per week,and each must have two consecutive days off.What is the minimum number of workers needed? Provide the days off that each worker receives.

Acme expected demand for rocket-powered roller skates to pick up during Roadrunner Season,so they built hundreds of extra pairs and stored them out of season.The excess production is:

Table 10.7 The framing department has six jobs waiting to be processed.It is now time zero and all jobs are ready to begin.Each has only one operation remaining.All jobs arrived at the same time,and FCFS begins with job A,then B,etc. -Using the information in Table 10.7 and the earliest due date (EDD)rule,what is the average days past due?

Table 10.6 Bluebird University provides tutoring services for undergraduate students seven days a week.The daily requirements for tutors are: Each tutor works five days a week and must have two consecutive days off,according to the contract. -Use the information in Table 10.6.What is the minimum number of tutors required if preference is given to the pair S-SU in case of a tie in the selection off days?

Which one of the following statements concerning production and staffing plans is BEST?

A sales and operations plan for a manufacturing firm that centers on manufacturing rates and inventory holdings is:

The ________ takes the master production schedule and derives plans for components,purchased materials and workstations.

The level strategy maintains a constant ________ level or ________ level during the planning horizon.

Jake reports to the courier department Monday through Friday and stays from 9 am to 5 pm but many times does not have enough work to keep him busy.Regardless,he is paid for a full eight hours even on those days when he spends more time on social media than delivering supplies.This is an example of undertime.

Table 10.3 A large distribution center uses some part-time employees in its workforce.Each part-time employee works a maximum of 80 hours per month.The workforce requirements (expressed as the number of part-time employees working the maximum regular time of 80 hours per month)are given in the following table for the next six periods. The relevant costs are: Wages = $350/month/worker Hiring cost = $100/worker Layoff cost = $ 50/worker Overtime cost = 150% of regular-time rate The current workforce level is 60,and overtime cannot exceed 25% of regular-time capacity. Use the spreadsheet approach to answer the following questions. -Use the information in Table 10.3.Use a chase strategy with hiring and layoffs but no overtime.How many workers will be hired in month 3?

A(n)________ graphically displays the load on a productive resource of interest,i.e. ,when it is busy and when it is idle.

A company is attempting to cope with seasonal demand patterns by managing its demand.Which one of the following will NOT help achieve this aim?

Anticipation inventory is used to absorb uneven rates of demand or supply.

Table 10.1 Bart Incorporated manufactures rotary air fans and uses a production-planning horizon of one-half year.It allows for regular time,part time,overtime,and subcontracting production to meet the demand but no more than 12 units may be made by each of these methods.Both anticipation inventory and backorders are allowed.The beginning (or current)inventory is 20 units.Their first attempt at a sales and operations plan has resulted in the following. -Use the information in Table 10.1.Which of these changes would result in the greatest improvement (in terms of total cost)for the production plan?

Jobs processed using the first-come-first-served priority rule still permits them to be expedited.