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Operations Management Sustainability And Supply Chain Management Global Edition 12th Edition Jay Heizer, Barry Render, Chuck Munson - Solutions
How might the procedure for custom surgical packs described here be improved?
What do you recommend be done when an error is found in a pack as it is opened for an operation?
Document the research that is being done on the aircraft passenger-loading problem.
As an initial phase of a kaizen event, discuss the many ways passengers can be loaded and unloaded from airplanes.
What are the key ingredients of Lean, as identified at Alaska Airlines?
How do your answers to Problems 16.8 and 16.9 provide insight into a collaborative purchasing strategy?
Discount-Mart (see Problem 16.8), as part of its new Lean program, has signed a long-term contract with Specialty Lighting and will place orders electronically for its halogen lamps. Ordering costs will drop to $.50 per order, but DiscountMart also reassessed its carrying costs and raised them
Discount-Mart, a major East Coast retailer, wants to determine the economic order quantity (see Chapter 12 for EOQ formulas) for its halogen lamps. It currently buys all halogen lamps from Specialty Lighting Manufacturers in Atlanta. Annual demand is 2,000 lamps, ordering cost per order is $30, and
Maggie Moylan Motorcycle Corp. uses kanbans to support its transmission assembly line. Determine the size of the kanban for the mainshaft assembly and the number of kanbans needed.Setup cost = $20 Annual holding cost of mainshaft assembly = $250 per unit Daily production = 300 mainshafts Annual
Pauline Found Manufacturing, Inc., is moving to kanbans to support its telephone switching-board assembly lines. Determine the size of the kanban for subassemblies and the number of kanbans needed.
Tej Dhakar’s company wants to establish kanbans to feed a newly established work cell. The following data have been provided. How many kanbans are needed?
Hartley Electronics, Inc., in Nashville, produces short runs of custom airwave scanners for the defense industry.The owner, Janet Hartley, has asked you to reduce inventory by introducing a kanban system. After several hours of analysis, you develop the following data for scanner connectors used in
Rick Wing has a repetitive manufacturing plant producing automobile steering wheels. Use the following data to prepare for a reduced lot size. The firm uses a work year of 305 days.
Given the following information about a product at Michael Gibson’s firm, what is the appropriate setup time?Annual demand = 39,000 units Daily demand = 150 units Daily production = 1,000 units Desired lot size = 150 units Holding cost per unit per year = $10 Setup labor cost per hour = $40
Carol Cagle has a repetitive manufacturing plant producing trailer hitches in Arlington, Texas. The plant has an average inventory turnover of only 12 times per year. She has therefore determined that she will reduce her component lot sizes. She has developed the following data for one component,
Which Lean techniques work in both the manufacturing and service sectors?
Does Lean production work in the service sector? Provide an example.
Standardized, reusable containers have obvious benefits for shipping. What is the purpose of these devices within the plant?
Discuss how the Japanese word for card has application in the study of JIT.
What are the characteristics of supplier partnerships with respect to suppliers?
What is kaizen, and what is a kaizen event?
What are three ways in which Lean and quality are related?
JIT attempts to remove delays, which do not add value. How, then, does JIT cope with weather and its impact on crop harvest and transportation times?
What is level scheduling?
What is TPS?
What is JIT?
What is a Lean producer?
Cyclical scheduling is used to schedule:a) jobs.b) machines.c) shipments.d) employees.
What is computerized short-term scheduling that overcomes the disadvantage of rule-based systems by providing the user with graphical interactive computing?a) LPTb) FCSc) CSSd) FCFSe) GIC
The job that should be scheduled last when using Johnson’s rule is the job with the:a) largest total processing time on both machines.b) smallest total processing time on both machines.c) longest activity time if it lies with the first machine.d) longest activity time if it lies with the second
The most popular priority rules include:a) FCFS.b) EDD.c) SPT.d) all of the above.LO
The assignment method involves adding and subtracting appropriate numbers in the table to find the lowest _____ for each assignment.a) profitb) number of stepsc) number of allocationsd) range per rowe) opportunity cost
A visual aid used in loading and scheduling jobs is a:a) Gantt chart.b) planning file.c) bottleneck.d) load-schedule matrix.e) level material chart.
Which of the following decisions covers the longest time period?a) Short-term schedulingb) Capacity planningc) Aggregate planningd) A master schedule
How does the schedule impact productivity?
Why is seniority important in scheduling servers?
What can be done to lower turnover in large restaurants?
Name and justify several factors that Hoffman could use in forecasting weekly sales.
Whoever performs the packaging function is severely underutilized. Can you find a better way of utilizing the four- or five-person crew than either giving each a single job or allowing each to manufacture an entire table? How many tables could be manufactured per day with this scheme?
What is the fastest time to manufacture a table with the original crew if Cathy is moved to either preparation or finishing?
Would production rates and quantities change significantly if George would allow Randy to perform one of the four functions and make one of the original crew the backup person?
What is the fastest way to manufacture Old Oregon tables using the original crew? How many could be made per day?
Given the following demand for waiters and waitresses at S. Ghosh Bar and Grill, determine the minimum wait staff needed with a policy of 2 consecutive days off.
Daniel’s Barber Shop at Newark Airport is open 7 days a week but has fluctuating demand. Daniel Ball is interested in treating his barbers as well as he can with steady work and preferably 5 days of work with two consecutive days off.His analysis of his staffing needs resulted in the following
Six jobs are to be processed through a two-step operation. The first operation involves sanding, and the second involves painting. Processing times are as follows:
The following set of seven jobs is to be processed through two work centers at George Heinrich’s printing company. The sequence is first printing, then binding. Processing time at each of the work centers is shown in the following table:a) What is the optimal sequence for these jobs to be
The following jobs are waiting to be processed at Jeremy LaMontagne’s machine center. Today is day 250 Using the critical ratio scheduling rule, in what sequence would the jobs be processed
Sunny Park Tailors has been asked to make three different types of wedding suits for separate customers. The table below highlights the time taken in hours for (1) cutting and sewing and (2) delivery of each of the suits. Which schedule finishes sooner:first come, first served (123) or a schedule
The following jobs are waiting to be processed at Julie Morel’s machine center:In what sequence would the jobs be ranked according to the following rules: (a) FCFS, (b) EDD, (c) SPT, and (d) LPT? All dates are according to shop calendar days. Today on the planning calendar is day 130, and none of
The following jobs are waiting to be processed at Rick Solano’s machine center. Solano’s machine center has a relatively long backlog and sets a fresh schedule every 2 weeks, which does not disturb earlier schedules. Below are the jobs received during the previous 2 weeks. They are ready to be
An Alabama lumberyard has four jobs on order, as shown in the following table. Today is day 205 on the yard’s schedule.
The following 5 overhaul jobs are waiting to be processed at Avianic’s Engine Repair Inc. These jobs were logged as they arrived. All dates are specified as planning calendar days.Assume that all jobs arrived on day 180; today’s date is 200.
The following jobs are waiting to be processed at the same machine center. Jobs are logged as they arrive:
Lifang Wu owns an automated machine shop that makes precision auto parts. He has just compiled an input–output report for the grinding work center. Complete this report and analyze the results.
Daniel Glaser, chairman of the College of San Antonio’s business department, needs to assign professors to courses next semester. As a criterion for judging who should teach each course, Professor Glaser reviews the past 2 years’ teaching evaluations(which were filled out by students). Since
Tigers Sports Club has to select four separate co-ed doubles teams to participate in an inter-club table tennis tournament. The pre-selection results in the selection of a group of four men—Raul, Jack, Gray, and Ajay—and four women—Barbara, Dona, Stella, and Jackie. Now, the task ahead lies
The Baton Rouge Police Department has five detective squads available for assignment to five open crime cases. The chief of detectives, Jose Noguera, wishes to assign the squads so that the total time to conclude the cases is minimized. The average number of days, based on past performance, for
Jamison Day Consultants has been entrusted with the task of evaluating a business plan that has been divided into four sections—marketing, finance, operations, and human resources.Chris, Steve, Juana, and Rebecca form the evaluation team. Each of them has expertise in a certain field and tends to
The Johnny Ho Manufacturing Company in Columbus, Ohio, is putting out four new electronic components.Each of Ho’s four plants has the capacity to add one more product to its current line of electronic parts. The unit-manufacturing costs for producing the different parts at the four plants are
J.C. Howard’s medical testing company in Kansas wishes to assign a set of jobs to a set of machines. The following table provides the production data of each machine when performing the specific job:
The Green Cab Company has a taxi waiting at each of four cabstands in Evanston, Illinois. Four customers have called and requested service. The distances, in miles, from the waiting taxis to the customers are given in the following table. Find the optimal assignment of taxis to customers so as to
First Printing and Copy Center has 4 more jobs to be scheduled, in addition to those shown in Example 3 in the chapter. Production scheduling personnel are reviewing the Gantt chart at the end of day 4.◆ Job D was scheduled to begin early on day 2 and to end on the middle of day 9.As of now (the
Ron Satterfield’s excavation company uses both Gantt scheduling charts and Gantt load charts.a) Today, which is the end of day 7, Ron is reviewing the Gantt chart depicting these schedules:◆ Job #151 was scheduled to begin on day 3 and to take 6 days. As of now, it is 1 day ahead of
What is input–output control?
What are the advantages to finite capacity scheduling?
What are the steps of the assignment method of linear programming?
State the four effectiveness measures for dispatching rules.
When is Johnson’s rule best applied in job-shop scheduling?
Which shop-floor scheduling rule would you prefer to apply if you were the leader of the only team of experts charged with defusing several time bombs scattered throughout your building? You can see the bombs; they are of different types.You can tell how long each one will take to defuse. Discuss.
Explain the terms flow time and lateness .
What is a due date?
What are the advantages and disadvantages of the shortest processing time (SPT) rule?
Name five priority sequencing rules. Explain how each works to assign jobs.
Describe what is meant by “loading” work centers. What are the two ways work centers can be loaded? What are two techniques used in loading?
List the four criteria for determining the effectiveness of a scheduling decision. How do these criteria relate to the four criteria for sequencing decisions?
What is the overall objective of scheduling?
Which system extends MRP II to tie in customers and suppliers?a) MRP IIIb) JITc) IRPd) ERPe) Enhanced MRP II
A(n) ______ MRP system provides information to the capacity plan, to the master production schedule, and ultimately to the production plan.a) dynamicb) closed-loopc) continuousd) retrospectivee) introspective
MRP II stands for:a) material resource planning.b) management requirements planning.c) management resource planning.d) material revenue planning.e) material risk planning.
A lot-sizing procedure that orders on a predetermined time interval with the order quantity equal to the total of the interval’s requirement is:a) periodic order quantity.b) part period balancing.c) economic order quantity.d) all of the above.
Net requirements =a) Gross requirements + Allocations − On-hand inventory+ Scheduled receipts.b) Gross requirements − Allocations − On-hand inventory −Scheduled receipts.c) Gross requirements − Allocations − On-hand inventory+ Scheduled receipts.d) Gross requirements + Allocations −
The difference between a gross material requirements plan (gross MRP) and a net material requirements plan(net MRP) is:a) the gross MRP may not be computerized, but the net MRP must be computerized.b) the gross MRP includes consideration of the inventory on hand, whereas the net MRP doesn’t
In a product structure diagram:a) parents are found only at the top level of the diagram.b) parents are found at every level in the diagram.c) children are found at every level of the diagram except the top level.d) all items in the diagrams are both parents and children.e) all of the above.
Be specific in your suggestions for reducing inventory and how to implement them.
Why does Wheeled Coach have excess inventory, and what kind of a plan would you suggest for dealing with it?
Why is accurate inventory such an important issue at Wheeled Coach?
Assuming that there is no beginning inventory of the Cheeto Crusted Mac & Cheese and cooking time for the entire 216 portions is 0.6 hours, when must preparation begin?
What is the cost per portion? How much less expensive is the Cheeto Crusted Mac & Cheese than Chef John’s alternative creation, the Buffalo Chicken Mac & Cheese, shown in Figure 14.9 of this chapter?
Prepare a bill of material explosion and total cost for the 216 portions of Cheeto Crusted Mac & Cheese.
Using the data for the coffee table in Problem 14.31,build a labor schedule when the labor standard for each top is 2 labor-hours; each leg including brass cap installation requires 4 hour, as does each pair of braces. Base assembly requires 1 labor-hour, and final assembly requires 2 labor-hours.
Courtney Kamauf schedules production of a popular Rustic Coffee Table at Kamauf Enterprises, Inc. The table requires a top, four legs, 1 8 gallon of stain, 1 16 gallon of glue, 2 short braces between the legs and 2 long braces between the legs, and a brass cap that goes on the bottom of each leg.
Coleman Rich, Ltd., has received the following orders:The entire fabrication for these units is scheduled on one machine.There are 2,250 usable minutes in a week, and each unit will take 65 minutes to complete. Develop a capacity plan, using lot splitting, for the 10-week time period.
Karl Knapps, Inc., has received the following orders:The entire fabrication for these units is scheduled on one machine.There are 2,250 usable minutes in a week, and each unit will take 65 minutes to complete. Develop a capacity plan, using lot splitting, for the 10-week time period.
Grace Greenberg, production planner for Science and Technology Labs, in New Jersey, has the master production plan shown below:
M. de Koster, of Rene Enterprises, has the master production plan shown below:
Using your answers for the lot sizes computed in Problems 14.22, 14.23, and 14.24, which is the best technique and why?
Develop a POQ solution and calculate total relevant costs for the data in the preceding table. PX
Develop an EOQ solution and calculate total relevant costs for the data in the preceding table. PX
Develop a lot-for-lot solution and calculate total relevant costs for the data in the preceding table. PX
Heather Adams, production manager for a Colorado exercise equipment manufacturer, needs to schedule an order for 50 UltimaSteppers, which are to be shipped in wee 8.Subscripts indicate quantity required for each parent. Assume lot-for-lot ordering. Below is information about the steppers:
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