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business
operations management 6th

Questions and Answers of Operations Management 6th

Solve the following LP problem graphically:Maximize Z = 4X1 + 4X2 Subject to: 3X1 + 5X2 … 150 X1 - 2X2 … 10 5X1 + 3X2 … 150 X1, X2 Ú 0
Solve the following LP problem graphically. Indicate the corner points on your graph.Maximize profit = +3X1 + +5X2 Subject to: X2 … 6 3X1 + 2X2 … 18 X1, X2 Ú 0 lop4
Solve the following LP problem graphically: lop4 Minimize cost = 24X + 15Y Subject to: 7X + 11Y Ú 77 16X + 4Y Ú 80 X, Y Ú 0
Consider Paul Jordan’s following LP formulation:Minimize cost = +1X1 + +2X2 Subject to: X1 + 3X2 Ú 90 8X1 + 2X2 Ú 160 3X1 + 2X2 Ú 120 X2 … 70a) Graphically illustrate the feasible region to
Solve the following LP problem graphically:Minimize cost = 4X1 + 5X2 Subject to: X1 + 2X2 Ú 80 3X1 + X2 Ú 75 X1, X2 Ú 0
A feed processor in Delta Egypt must store various amounts of three different commodities in five different silos.The loading cost per ton in E£, the amount to be stored in tons, and the capacity of
The intensive care unit (ICU) at a certain hospital operates 24 hours a day. Doctors report for duty at 6 a.m., 12 p.m., 6 p.m., or 12 a.m., and the following table below shows the minimum number of
Leach Distributors packages and distributes industrial supplies. A standard shipment can be packaged in a class A container, a class K container, or a class T container. A single class A container
A car manufacturer has production plants in Germany, the U.K., and France and exports to some other countries. The manufacturer’s supply chain includes manufacturer, distributors, and retailers.
You have just been hired as a planner for the municipal school system, and your first assignment is to redesign the subsidized lunch program. In particular, you are to formulate the least expensive
Rollins Publishing needs to decide what textbooks from the following table to publish.TEXTBOOK DEMAND FIXED COST VARIABLE COST SELLING PRICE Book 1 9,000 $12,000 $19 $40 Book 2 8,000 $21,000 $28 $60
Porter Investments needs to develop an investment portfolio for Mrs. Singh from the following list of possible investments:INVESTMENT COST EXPECTED RETURN A $10,000 $ 700 B $12,000 $1,000 C $ 3,500 $
Formulate an LP problem to determine the number of guitars GuitarsToday should assemble to maximize their income. lop4
Solve to find the best solution. lop4
Why is scheduling for Alaska more complex than for other airlines? lop4
What operational considerations may prohibit Alaska from adding flights and more cities to its network? lop4
What were the risks of keeping the same crew on the Seattle—Chicago—Seattle route? lop4
Estimate the direct costs to the airline should the crew “time out” and not be able to fly its Boeing 737 back to Seattle from Chicago on the same day. These direct variable costs should include
Which of the following is not a valid LP constraint formulation?a) 3X + 4Y … 12b) 2X * 2Y … 12c) 3Y + 2Z = 18d) 100 Ú X + Ye) 2.5X + 1.5Z = 30.6
Using a graphical solution procedure to solve a maximization problem requires that we:a) move the iso-profit line up until it no longer intersects with any constraint equation.b) move the iso-profit
Consider the following linear programming problem:Maximize 4X + 10Y Subject to: 3X + 4Y … 480 4X + 2Y … 360 X, Y Ú 0 The feasible corner points are (48,84), (0,120), (0,0), and (90,0). What is
A zero shadow price for a resource ordinarily means that:a) the resource is scarce.b) the resource constraint was redundant.c) the resource has not been used up.d) something is wrong with the problem
For these two constraints, which point is in the feasible region of this minimization problem?14x + 6y Ú 42 and x + y Ú 3a) x = -1, y = 1b) x = 0, y = 4c) x = 2, y = 1d) x = 5, y = 1e) x = 2, y = 0
Define Lean operations 676
Define the seven wastes and the 5Ss 676
Identify the concerns of suppliers when moving to supplier partnerships 680
Determine optimal setup time 683
Define kanban 685
Compute the required number of kanbans 686
Identify six attributes of Lean organizations 689
Explain how Lean applies to services 690
What is a Lean producer? L01
What is JIT? L01
What is TPS? L01
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? L01
What are three ways in which Lean and quality are related? L01
What is kaizen, and what is a kaizen event? L01
What are the characteristics of supplier partnerships with respect to suppliers? L01
Discuss how the Japanese word for card has application in the study of JIT. L01
Standardized, reusable containers have obvious benefits for shipping. What is the purpose of these devices within the plant? L01
Does Lean production work in the service sector? Provide an example. L01
Which Lean techniques work in both the manufacturing and service sectors? L01
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
Al-Arabi Company in Egypt is a manufacturer of steel knobs. The manager decided to introduce the Kanban system to reduce inventory.Using the information in the table below, how many Kanbans are
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?Daily demand 250 units Lead time 1 2 day
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
The distributor of lighting system mentioned in Problem 16.8 has decided to implement a Lean management program. As a result, the firm has signed a long-term contract with a supplier to place orders
How do the answers to Problems 16.8 and 16.9 provide insights about the implementation of JIT Lean Management Systems? L01
Flores Manufacturing, Inc., is moving to kanbans to support its electronic-board assembly lines. Determine the size of the kanban for subassemblies and the number of kanbans needed.Setup cost = +25
What are the key ingredients of Lean, as identified at Alaska Airlines? L01
As an initial phase of a kaizen event, discuss the many ways passengers can be loaded and unloaded from airplanes. L01
Document the research that is being done on the aircraft passenger-loading problem. L01
What do you recommend be done when an error is found in a pack as it is opened for an operation? L01
When discussing JIT in services, the text notes that suppliers, layout, inventory, and scheduling are all used. Provide an example of each of these at Arnold Palmer Hospital. L01
When a doctor proposes a new surgical procedure, how do you recommend the SKU for a new custom pack be entered into the hospital’s supply-chain system? L01
Define the seven wastes and the 5Ss. The seven wastes are ________, ________, ________,________, ________.________, and ________, and the 5Ss are ________, ________, ________, ________, and ________.
What is the formula for optimal setup time?a) 22DQ>[H(1 - d>p)]b) 2Q2 H(1 - d>p)>(2D)c) QH(1 - d>p)>(2D)d) Q2 H(1 - d>p)>(2D)e) H(1 - d>p) L01
Kanban is the Japanese word for:a) car.b) pull.c) card.d) continuous improvement.e) level schedule. L01
The required number of kanbans equals:a) 1.b) Demand during lead time / Qc) Size of container.d) Demand during lead time.e) Demand during lead time + Safety stock / Size of container L01
The six attributes of Lean organizations are: ________, ________, ________, ________, ________, and ________. L01
Develop a product structure 603
Build a gross requirements plan 606
Build a net requirements plan 607
Determine lot sizes for lot-for-lot, EOQ, and POQ 611
Describe MRP II 614
Describe closed-loop MRP 616
Describe ERP 618
What is the difference between a gross requirements plan and a net requirements plan? lop5
Once a material requirements plan (MRP) has been established, what other managerial applications might be found for the technique? lop5
What are the similarities between MRP and DRP? lop5
How does MRP II differ from MRP? lop5
Which is the best lot-sizing policy for manufacturing organizations? lop5
What impact does ignoring carrying cost in the allocation of stock in a DRP system have on lot sizes? lop5
MRP is more than an inventory system; what additional capabilities does MRP possess? lop5
What are the options for the production planner who has:a) scheduled more than capacity in a work center next week?b) a consistent lack of capacity in that work center? lop5
Master schedules are expressed in three different ways depending on whether the process is continuous, a job shop, or repetitive. What are these three ways? lop5
What functions of the firm affect an MRP system? How? lop5
What is the rationale for (a) a phantom bill of material, (b) a planning bill of material, and (c) a pseudo bill of material? lop5
Identify five specific requirements of an effective MRP system. lop5
What are the typical benefits of ERP? lop5
What are the distinctions between MRP, DRP, and ERP? lop5
As an approach to inventory management, how does MRP differ from the approach taken in Chapter 12, dealing with economic order quantities (EOQs)? lop5
What are the disadvantages of ERP? lop5
Use the Web or other sources to:a) Find stories that highlight the advantages of an ERP system.b) Find stories that highlight the difficulties of purchasing, installing, or failure of an ERP system.
The structure of MRP systems suggests “buckets” and infinite loading. What is meant by these two terms? lop5
You have developed the following simple product structure of items needed for your gift bag for a rush party for prospective pledges in your organization. You forecast 200 attendees. Assume that
As the production planner for Xiangling Hu Products, Inc., you have been given a bill of material for a bracket that is made up of a base, two springs, and four clamps. The base is assembled from one
Your boss at Xiangling Hu Products, Inc., has just provided you with the schedule and lead times for the bracket in Problem 14.3. The unit is to be prepared in week 10. The lead times for the
Using the information in Problem 14.5, construct a gross material requirements plan. lop5
Using the information in Problem 14.5, construct a net material requirements plan using the following on-hand inventory. lop5 ITEM ON-HAND INVENTORY ITEM ON-HAND INVENTORY S 20 W 30 T 20 X 25 U 40 Y
Refer again to Problems 14.5 and 14.7. In addition to 100 units of S, there is also a demand for 20 units of U, which is B1(1)A1(1)Subassembly X1 B2(2)E(1) C(2) D(1)E(2)PERIOD 789 10 11 12 Gross
a) Given the product structure and master production schedule shown in Figure 14.12, develop a gross requirements plan for all items.b) Given the product structure, master production schedule, and
Given the product structure, master production schedule, and inventory status in Figure 14.13, and assuming the requirements for each BOM item is 1:a) develop a gross requirements plan for Item C;b)
Based on the data in Figure 14.13, complete a net material requirements schedule for:a) All items (10 schedules in all), assuming the requirement for each BOM item is 1.b) All 10 items, assuming the
Electro Fans has just received an order for one thousand 20-inch fans due week 7. Each fan consists of a housing assembly, two grills, a fan assembly, and an electrical unit.The housing assembly
A part structure, lead time (weeks), and on-hand quantities for product A are shown in Figure 14.14. From the information shown, generate:a) An indented bill of material for product A (see Figure 5.9
You are product planner for product A (in Problem 14.14 and Figure 14.14). The field service manager, Mark Moon, has just called and told you that the requirements for B and F should each be
You have just been notified that the lead time for component G of product A (Problem 14.15 and Figure 14.14) has been increased to 5 weeks.a) Which items have changed, and why?b) What are the
Your stockroom manager, Mehmet Altag, arrived at your desk just after you had completed the net requirements plan for product A (use data in Figure 14.14 and Problem 14.15), exclaiming that the cycle
A toy manufacturer has an outstanding order of 1,000 units for one of its toys in week 7. The table below provides information about the components, on-hand inventory, and lead time.Subscripts

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