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business
operations management 6th

Operations Management Sustainability And Supply Chain Management 13th Global Edition Jay Heizer, Barry Render, Chuck Munson - Solutions

Explain how MRP plays a role in this plan. lop5
Prepare a bill of material explosion and total cost for the 216 portions of Cheeto Crusted Mac & Cheese. lop5
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? lop5
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? lop5
Why is accurate inventory such an important issue at Wheeled Coach? lop5
Why does Wheeled Coach have excess inventory, and what kind of a plan would you suggest for dealing with it? lop5
Be specific in your suggestions for reducing inventory and how to implement them lop5
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. lop5d) all of the above.
MRP II stands for:a) material resource planning.b) management requirements planning.c) management resource planning.d) material revenue planning. lop5e) material risk planning.
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) retrospective lop5e) introspective
Which system extends MRP II to tie in customers and suppliers?a) MRP IIIb) JITc) IRPd) ERPe) Enhanced MRP II lop5
Apply the assignment method for loading jobs 644
Define finite capacity scheduling 653
Use the cyclical scheduling technique 655
What is the overall objective of scheduling? L 0 1
List the four criteria for determining the effectiveness of a scheduling decision. How do these criteria relate to the four criteria for sequencing decisions? L 0 1
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? L 0 1
Name five priority sequencing rules. Explain how each works to assign jobs. L 0 1
What are the advantages and disadvantages of the shortest processing time (SPT) rule? L 0 1
What is a due date? L 0 1
Explain the terms flow time and lateness. L 0 1
When is Johnson’s rule best applied in job-shop scheduling? L 0 1
State the four effectiveness measures for dispatching rules. L 0 1
What are the steps of the assignment method of linear programming? L 0 1
What are the advantages to finite capacity scheduling? L 0 1
What is input–output control? L 0 1
First Printing and Copy Center has four 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
Four employees are to be assigned to four different jobs. The time per job per employee in minutes is given in the table below. L 0 1 JOB EMPLOYEE 1 2 3 4 A 8 10 17 9 B 3 8 5 6 C 10 12 11 9 D 6 13 9 7 Find the optimal assignment of employees to jobs to minimize the total completion time.
The marketing manager of a pharmaceutical company in Saudi Arabia has four salesmen that can serve four different sales regions. Considering the capabilities of the salesmen, their knowledge of the different medical providers, and the nature of regions, the marketing manager has estimated that
A sales manager for a large construction equipment company has offices in four Saudi Arabia cities. As part of the monthly assignment, the manager wants a salesman from each office to fly and meet buyers in four other cities. The table below shows the cost of airplane tickets in Saudi Riyal (SAR)
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 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
Tigers Sports Club has to select four separate coed doubles teams to participate in an interclub table tennis tournament. The preselection 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 in
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
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.Input–Output Report PERIOD 1 2 3 4 TOTAL Planned input 80 80 100 100 Actual input 85 85 85 85
Dennis Geyer’s company wishes to assign a set of jobs to a set of machines. The following table provides data as to the cost of each job when performed on a specific machine.a) Determine the assignment of jobs to machines that will minimize Geyer’s total cost.b) What is the total cost of your
Ravi Behara, the managing partner at a large law firm in Virginia, must assign three clients to three attorneys. Cost data are presented in the following table:ATTORNEY CLIENT 1 2 3 Divorce case $800 $1,100 $1,200 Felony case $500 $1,600 $1,300 Discrimination case $500 $1,000 $2,300 Use the
Jerry Wei, the hospital administrator at St. Charles General, must appoint head nurses to four newly established departments: urology, cardiology, orthopedics, and obstetrics. In anticipation of this staffing problem, he has hired four nurses, considered their backgrounds, personalities, and
The Doan Modianos Manufacturing Company is putting out seven new electronic components. Each of Modianos’eight 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 eight plants are shown in
The following jobs are waiting to be processed at the same machine center. Jobs are logged as they arrive:JOB DUE DATE DURATION (DAYS)A 313 8 B 312 16 C 325 40 D 314 5 E 314 3 In what sequence would the jobs be ranked according to the following decision rules: (a) FCFS, (b) EDD, (c) SPT, and (d)
The following five 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.JOB DUE DATE REMAINING TIME (DAYS)103 214 10 205
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
The following jobs are waiting to be processed at Julie Morel’s machine center: L 0 1 JOB DATE ORDER RECEIVED PRODUCTION DAYS NEEDED DATE ORDER DUE A 110 20 180 B 120 30 200 C 122 10 175 D 125 16 230 E 130 18 210 In what sequence would the jobs be ranked according to the following rules: (a)
Sunny Park Tailors has been asked to make three different types of wedding suits for separate customers. The following table highlights the time taken in hours for (1) cutting and sewing and (2) delivery of each of the suits. Which schedule finishes sooner: L 0 1 first come, first served (123) or
The following jobs are waiting to be processed at Jeremy LaMontagne’s machine center. Today is day 250. L 0 1 JOB DATE JOB RECEIVED PRODUCTION DAYS NEEDED DATE JOB DUE 1 215 30 260 2 220 20 290 3 225 40 300 4 240 50 320 5 250 20 340 Using the critical ratio scheduling rule, in what sequence
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: L 0 1 JOB PRINTING(HOURS)BINDING(HOURS)T 15 3 U 7 9 V 4 10
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: L 0 1 JOB OPERATION 1(HOURS)OPERATION 2(HOURS)A 10 5 B 7 4 C 5 7 D 3 8 E 2 6 F 4 3 Determine a sequence that will minimize the total
The following jobs are waiting to be processed at a small machine center: L 0 1 JOB DUE DATE DURATION (DAYS)10 260 30 20 258 16 30 260 8 40 270 20 50 275 10 All dates are specified as manufacturing planning calendar days.Assume that all jobs arrived on day 210 (yesterday) in the order shown but
Kamauf Custom Glass, Inc., manufactures custom windows primarily for homes and churches. Small repair jobs may take a few hours, but larger jobs may take hundreds of hours. How to schedule the jobs is a continuing issue. The scheduler has decided to see what insight can be gained by examining some
Courtney is a programmer receiving requests each week to analyze a large database. Five jobs were on her desk Monday morning, and she must decide in what order to write the code. Assume that all jobs arrived today (day 1 and hour 1) in the order shown below. Courtney has assigned the number of
At the campus copy shop, six jobs have arrived in the order shown (A, B, C, D, E, and F) at the beginning of the day(today, which is a workday). All of the jobs are due at various times today. Your task is to evaluate four common sequencing rules.JOB DUE (IN HOURS)DURATION(HOURS REQUIRED)A 4 (this
Drew Rosen Automation Company estimates the data entry and verifying times for four jobs as follows: L 0 1 JOB DATA ENTRY (HOURS) VERIFY (HOURS)A 2.5 1.7 B 3.8 2.6 C 1.9 1.0 D 1.8 3.0 In what order should the jobs be done if the company has one operator for each job? Illustrate the time-phased
The table below shows the weekly demand for security officers at a small mall in Kuwait.DAY SAT. SUN. MON. TUE. WED. THU. FRI.Security Officers Needed 6 3 4 5 6 7 8 Determine the minimum number of security officers needed with 2 consecutive days off. L 0 1
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. L 0 1 DAY MON. TUE. WED. THU. FRI. SAT. SUN.Wait staff needed 3 4 4 5 6 7 4
What is the fastest way to manufacture Old Oregon tables using the original crew? How many could be made per day?
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? L 0 1
What is the fastest time to manufacture a table with the original crew if Cathy is moved to either preparation or finishing? L 0 1
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? L 0 1
Make a Gantt chart to help Charlie organize his crew to perform the concert-to-basketball conversion. Note: Do not include the teardown of the concert stage and equipment, as that is the responsibility of the concert crew. L 0 1
What time will the floor be ready? L 0 1
Does Charlie have any extra personnel or a shortage of personnel?If so how many? L 0 1
Name and justify several factors that Hoffman could use in forecasting weekly sales. L 0 1
What can be done to lower turnover in large restaurants? L 0 1
Why is seniority important in scheduling servers? L 0 1
How does the schedule impact productivity? L 0 1
Which of the following decisions covers the longest time period? L 0 1 a) Short-term schedulingb) Capacity planningc) Aggregate planningd) A master schedule
A visual aid used in loading and scheduling jobs is a: L 0 1 a) Gantt chart.b) planning file.c) bottleneck.d) load-schedule matrix.e) level material chart.
The assignment method involves adding and subtracting appropriate numbers in the table to find the lowest _____ for each assignment. L 0 1 a) profitb) number of stepsc) number of allocationsd) range per rowe) opportunity cost LO 15.4 The most popular priority rules include:a) FCFS.b) EDD.c) SPT.d)
Cyclical scheduling is used to schedule:a) jobs.b) machines.c) shipments.d) employees. L 0 1
Describe the four types of inventory. lop5
With the advent of low-cost computing, do you see alternatives to the popular ABC classifications? lop5
What is the implication of the Pareto principle? lop5
Identify and explain the types of costs that are involved in an inventory system. lop5
Explain the major assumptions of the basic EOQ model. lop5
Which part of the cost in the EOQ is a linear function of the order quantity? lop5
Explain why it is not necessary to include product cost (price or price times quantity) in the EOQ model, but the quantity discount model requires this information. lop5
What are the advantages of cycle counting? lop5
Even if we have substantial uncertainty in the parameters in the EOQ model, it is still quite a useful model. Discuss. lop5
What should be considered if the order quantity is to be increased from the optimal to a discount point? lop5
What is meant by “service level”? lop5
Explain the following: All things being equal, the production order quantity will be larger than the economic order quantity. lop5
Suggest how we can set the time between deliveries in a fixed period system. lop5
Explain what is meant by the expression “robust model.”Specifically, what would you tell a manager who exclaimed,“Uh-oh, we’re in trouble! The calculated EOQ is wrong;actual demand is 10% greater than estimated.” lop5
What is “safety stock”? What does safety stock provide safety against? lop5
When demand is not constant, the reorder point is a function of what four parameters? lop5
How are inventory levels monitored in retail stores? lop5
Why would it be advantageous to supply a regional warehouse from the central warehouse using a fixed period system? lop5
The manager of a traffic and safety company wants to use the ABC classification system to classify its inventory items.The annual demand and the selling price of each item are listed in the table below.ITEM CODE # PRICE/UNIT (SAR) ANNUAL DEMAND (UNITS)IA510 450 5,000 IE510 725 14,000 IE511 500
Boreki Enterprises has the following 10 items in inventory. Theodore Boreki asks you, a recent OM graduate, to divide these items into ABC classifications.ITEM ANNUAL DEMAND COST/UNIT A2 3,000 $ 50 B8 4,000 12 C7 1,500 45 D1 6,000 10 E9 1,000 20 F3 500 500 G2 300 1,500 H2 600 20 I5 1,750 10 J8
Jean-Marie Bourjolly’s restaurant has the following inventory items that it orders on a weekly basis:INVENTORY ITEM $ VALUE/CASE # ORDERED/WEEK Ribeye steak 135 3 Lobster tail 245 3 Pasta 23 12 Salt 3 2 Napkins 12 2 Tomato sauce 23 11 French fries 43 32 Pepper 3 3 Garlic powder 11 3 Trash can
If D 5 8,000 per month, S 5 $45 per order, and H 5 $2 per unit per month,a) What is the economic order quantity?b) How does your answer change if the holding cost doubles?c) What if the holding cost drops in half? lop5
Atech Service sells professional cleaning machines and scouring agents. They deliver the scouring agents to customers on a fixed weekly schedule.The annual demand is 1,500 bottles, each with a value of $10.The fixed cost for each order placed at the supplier’s is $100. The lead time is 2 weeks.a)
M. Cotteleer Electronics supplies microcomputer circuitry to a company that incorporates microprocessors into refrigerators and other home appliances. One of the components has an annual demand of 250 units, and this is constant throughout the year. Carrying cost is estimated to be $1 per unit per
Bell Computers purchases integrated chips at $350 per chip. The holding cost is $35 per unit per year, the ordering cost is $120 per order, and sales are steady, at 400 per month. The company’s supplier, Rich Blue Chip Manufacturing, Inc., decides to offer price concessions in order to attract
Rocky Mountain Tire Center sells 20,000 go-cart tires per year. The ordering cost for each order is $40, and the holding cost is 20% of the purchase price of the tires per year.The purchase price is $20 per tire if fewer than 500 tires are ordered, $18 per tire if 500 or more—but fewer than
M. P. VanOyen Manufacturing has gone out on bid for a regulator component. Expected demand is 700 units per month. The item can be purchased from either Allen Manufacturing or Baker Manufacturing. Their price lists are shown in the table. Ordering cost is $50, and annual holding cost per unit is
Chris Sandvig Irrigation, Inc., has summarized the price list from four potential suppliers of an underground control valve. See the accompanying table on the next page. Annual usage is 2,400 valves; order cost is $10 per order; and annual inventory holding costs are $3.33 per unit.Which vendor
Emery Pharmaceutical uses an unstable chemical compound that must be kept in an environment where both temperature and humidity can be controlled. Emery uses 800 pounds per month of the chemical, estimates the holding cost to be 50%of the purchase price (because of spoilage), and estimates order
If D = 1,000 per year, S = $62.50 per order, and H = $.50 per unit per year, what is the economic order quantity for purchasing manager Soomin Park?=== If the economic order quantity = 300, annual demand = 8,000 units, and order costs = $45 per order, what is the holding cost for P. S. Ravi
It takes approximately 2 weeks (14 days) for an order of steel bolts to arrive once the order has been placed. The demand for bolts is fairly constant; on the average, the manager, Michelle Wu, has observed that the hardware store sells 500 of these bolts each day. Because the demand is fairly

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