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Operations Management Creating Value Along The Supply Chain 6th Edition Roberta Russell, Bernard W Taylor - Solutions
12-1. Describe the Delphi method for forecasting.
$11-32. The Roadnet Shipping Company has expanded its shipping capacity by purchasing 90 trailer trucks from a competitor that went bankrupt. The company subsequently located 30 of the purchased trucks at each of its shipping in Charlotte, Memphis, and Louisville. The company makes shipments from
$11-31. In problem S11-21 Phillups Corporation is just as concerned that its U.S. distributors receive shipments in the minimum amount of time as they are about minimizing their shipping costs. Suppose each U.S. distributor receives one major container shipment each month. Following are summaries
$11-30. In Problem S11-15, Systems Unlimited wants to meet demand more effectively at the four universities it supplies.It is considering two alternatives: (1) expand its warehouse at Richmond to a capacity of 600 at a cost equivalent to an additional $6 in handling and shipping per unit; or (2)
$11-29. In Problem S11-7, TransAm Foods would like to know what the effect would be on the optimal solution and the company’s decision regarding its shipping if it negotiates with its suppliers in Sacramento, Jacksonville, and Ocala to increase their capacity to 25 tons per month? What would be
S11-28. The Sunshine Rental Car Agency has six lots in Orlando.and it wants to have a certain number of cars available at each lot at the beginning of each day for local rental.The agency would like a model it could quickly solve at the end of each day that would tell how to redistrib-ute the cars
S11-27. In Problem S11-18, the school board has determined that it does not want any of the schools to be overly crowded compared with the other schools. It would like to assign students from each district to each school so that enroll-ments are evenly balanced between the four schools.However, the
$11-26. In Problem S11-23, the Adams Brewing Company man-agement has negotiated a new shipping contract with a trucking firm between its Tampa brewery and its distribu-tor in Kentucky that reduces the shipping cost per barrel from $0.80 per barrel to $0.55 per barrel. How will this cost change
$11-25. During the war in Iraq large amounts of military matériel and supplies had to be shipped daily from supply depots in the United States to bases in the Middle East. The crit-ical factor in the movement of these supplies was speed.The following table shows the number of planeloads of
$11-24. A manufacturing firm produces diesel engines in four cities-Phoenix, Seattle, St. Louis, and Detroit. The com-pany is able to produce the following numbers of engines per month:Plant Production 1. Phoenix 10 2. Seattle 20 3. St. Louis 15 4. Detroit 25 Three trucking firms purchase the
$11-23. The John Adams Brewing Company has breweries in three cities; the breweries can supply the following numbers of bar-rels of draft beer to the company's distributors each month:Brewery Monthly Supply [barrels)A. Tampa 4,000 B. St.Louis 5,000 C. Milwaukee 3,500 12,500Determine the minimum
S11-22. In Exhibit S11.4. shipments are prohibited from Kansas City to Chicago because of railroad construction. Once the rail construction is completed, what will be the effect on the optimal shipping routes?
S11-21 Phillups Corporation is a global distributor of electrical parts and components. Its customers are electronics compa-nies in the United States, including computer manufactur-ers are audio/visual product manufactures. The company contracts to purchase components and parts from manufac-turers
S11-20. A manufacturing company is closing three of its existing plants and intends to transfer some of its more skilled employees to three plants that will remain open. The number of employees available for transfer from each closing plant is as follows:Determine the best way to transfer employees
$11-19. Orient Transport Express (OTE) is a global distribution company that transports its clients’ products to customers in Hong Kong, Singapore, and Taipei. All of the products OTE ships are stored at three distribution centers—one in Los Angeles, one in Savannah, and one in Galveston. For
$11-18. Maryville has built a new elementary school so that the town now has a total of four schools—Addison, Beeks, Canfield, and Daley. Each has a capacity of 400 students.The school wants to assign children to schools so that their travel time by bus is as short as possible. The school has
$11-17. Horizon Computers manufactures laptops in Germany, Belgium, and Italy. Because of high tariffs between international trade groups, it is sometimes cheaper to ship partially completed laptops to factories in Puerto Rico, Mexico, and Panama and have them completed before final shipment to
$11-16. In Problem S11-11, what would be the effect on the optimal solution if there were no shortage of rental trucks at the New Orleans outlet?
$11-15. Systems Unlimited sells personal computers to universities and colleges on the East Coast and ships them from three distribution warehouses. The firm is able to supply the following numbers of computers to the universities by the beginning of the academic year:Four universities have ordered
S11-14. A severe winter ice storm has swept across North Carolina and Virginia followed by more than a foot of show and frigid, single-digit temperatures. These weather conditions have resulted in numerous downed power lines and power outages in the region, causing dangerous conditions for much of
$11-13. The Beacon Publishing Company hires eight college students as salespeople to sell children’s books during the summer. The company desires to distribute them to three sales territories. Territory | requires three salespeople, and territories 2 and 3 require two salespeople each. It is
$11-12. The Big Ten Athletic Conference has nine basketball officials who must be assigned to three conference games, three to each game. The conference office wants to assign the officials so that the time they travel the total distances will be minimized. The hours each official would have to
$11-11. The US-Haul Truck Rental firm has accumulated extra trucks at three of its truck leasing outlets, as shown:The firm also has four outlets with shortages of rental trucks, as follows:The firm wants to transfer trucks from the outlets with extras to those with shortages at the minimum total
$11-10. Suppose that in Problem S11-8 Atlantic could purchase all the baby food it needs from a New York City distributor at a price that would result in a profit of $9 per case at stores 1, 3, and 4, $8 per case at stores 2 and 6, and $7 per case at store 5. Should Atlantic purchase all, none, or
$11-9. Oranges are grown, picked, and then processed and packaged at distribution centers in Tampa, Miami, and Fresno.These centers supply oranges to markets in New York, Philadelphia, Chicago, and Boston. The following table shows the shipping costs per truckload ($100s), supply, and
$11-8. The Atlantic Grocery chain operates in major metropolitan areas on the eastern seaboard. The stores have a “no-frills”approach, with low overhead and high volume. They generally buy their stock in volume at low prices. However, in some cases they actually buy stock at stores in other
$11-7. TransAm Foods Company has five plants where it processes and packages fruits and vegetables. It has suppliers in six cities in California, Texas, Alabama, and Florida. The company has owned and operated its own trucking system in the past for transporting fruits and vegetables from its
$11-6. In Problem S11-3, what would be the effect of a reduction in production capacity at the Gary location from 310 tons to 260 tons per week?
$11-5. Walsh’s Fruit Company contracts with growers in Ohio, Pennsylvania, and New York to purchase grapes. The grapes are processed into juice at the farms and stored in refrigerated vats. Then the juice is shipped to two plants, where it is processed into bottled grape juice and frozen
$11-4. A national catalogue and Internet retailer has three warehouses and three major distribution centers located around the country. Normally, items are shipped directly from the warehouses to the distribution centers; however, each of the distribution centers can also be used as an intermediate
$11-3. Steel mills in three cities produce the following amounts of steel:Shipping costs per ton of steel are as follows:Because of a truckers’ strike, shipments are prohibited from Birmingham to Chicago. Solve this problem. Location A. Bethlehem B. Birmingham C. Gary Weekly Production (tons) 180
S11-2. The MidAm Produce Company contracts with potato farmers in Idaho, Nebraska, South Dakota, and Michigan for monthly potato shipments. MidAm picks up the pota-toes at the farms and ships mostly by truck (and some-times by rail) to its sorting and distribution centers in Indiana, Kansas, and
$11-1. Globalnet Foods, Inc ., imports food products such as meats, cheeses, and pastries to the United States from ware-houses at ports in Hamburg. Marseilles, and Liverpool.Ships from these ports deliver the products to Norfolk, New York, and Savannah, where they are stored in company warehouses
11-17. Explore the Web site of an ERP provider and describe the transportation and distribution services it indicates it provides.
11-16. Describe the supply chain for your university or college.Who are the suppliers, and distributors in this supply chain?Are there different supplier tiers?
11-15. Purchasing is a trade magazine with the subtitle, "The Magazine of Total Supply Chain Management and e-Procurement." Its articles include many examples of supply chain management at various companies. Research an article from Purchasing and write a brief paper on a company reporting on its
11-14. Describe an example of a business you are familiar with and describe its primary transportation model and its trans-port routes.
11-13. Describe the distribution system, in general terms, for McDonald's and for Toyota.
11-12. Describe the differences and/or similarities between VMI and postponement, and explain how the two might comple-ment each other.
11-11. Select a company that has a global supply chain and describe it, including purchasing, production, distribution, and transportation.
11-10. Locate an international logistics provider on the Internet;describe the services it provides and identify some of its customers.
11-9. Describe the global supply and distribution channels of retail companies like L.L. Bean, Sears, and J.C. Penney.What are some of their problems.
11-8. Wal-Mart is one of the leaders in promoting the develop-ment and use of RFID and electronic product codes Explain how Wal-Mart uses RFID in its procurement and distribution and why Wal-Mart wants its suppliers to adopt RFID.
11-7. Select a company and determine the type of suppliers it has, then indicate the criteria that you think the company might use to evaluate and select suppliers.
11-6. Locate a transportation exchange on the Internet, describe the services it provides to its users, and indicate some of the customers that use it.
11-5. Identify five businesses in your community and determine what modes of transportation are used to supply them.
11-4. Transportation & Distribution is a trade magazine that focuses on supply chain management, especially logistics.In fact, its Web site is www.totalsupplychain.com. The magazine includes numerous articles reporting on compa-nies' experiences with supply chain management. Select an article from
11-3. Discuss why single-sourcing has become attractive to companies.
11-2. Define the strategic goals of supply chain management, and indicate how procurement and transportation and dis-tribution has an impact on these goals.
11-1. Explain how Wal-Mart uses cross-docking to improve its supply chain efficiency.
10-10. The Fizer Drug Company manufactures over-the-counter and prescription drugs. Last year the company’s cost of goods sold was $470 million. It carried average raw material inventory of $17.5 million, average work-in-process of $9.3 million, and average finished goods inventory of $6.4
10-9. The Ashton Furniture Company manufactures coffee tables and chest of drawers. Last year the company's cost of goods sold was $3,700,000, and it carried inventory of oak, pine, stains, joiners, and brass fixtures, work-in-process of furniture frames, drawers and wood panels, and finished
10-8.Barington Mills manufactures denim cloth from two pri-mary raw materials, cotton and dye. Work-in-process includes lapped cotton, spun yarn, and undyed cloth, while finished goods includes three grades of dyed cloth. The average inventory amounts on hand at any one time last year and the unit
10-7. The PM Computer Company makes build-to-order (BTO)computers at its distribution center year round. The following table shows the average value (in $ millions) of component parts, work-in-process, and finished computers at the DC for the past four years.Year 1 2 3 4 Component parts $20.5 27.8
10-6. Solve Problem 3-34 in Chapter 3 to construct a e-chart for monitoring invoice errors at Telcom Manufacturing Company.
10-5. Solve Problem 3-35 in Chapter 3 to construct an x-bar chart in conjunction with an R-chart for delivery time at the Great Outdoors Clothing Company.
10-4. House Max Builders constructs modular homes, and Jast year their cost of goods sold was $18.500.000. It operates 50 weeks per year. The company has the following inven-tory of raw materials, work-in-process, and finished goods.Determine the number of inventory turns and the days of supply for
10-3. Solve Problem 3-41 in Chapter 3 to construct an r-chart in conjunction with an R-chart for order fulfillment lead time at Valtec Electronics.
10-2. Delph Manufacturing Company is going to purchase an auto parts component from one of two competing suppli-ers. Delph is going to base its decision, in part, on the sup-ply chain performance of the two suppliers. The company has obtained the following data for average raw
10-1. Solve Problem 3-25 in Chapter 3 to construct a c-chart to monitor late order deliveries at the National Bread Company,
10-16. Identify three service businesses in your community and describe their supply chains.
10-15. Select a company and determine the type of suppliers it has, then indicate the criteria that you think the company might use to evaluate and select suppliers
10-14. Wal-Mart is one of the leaders in promoting the develop-ment and use of RFID and electronic product codes. Ex-plain how Wal-Mart plans to use RFID, why Wal-Mart wants its suppliers to adopt RFID, and what obstacles you think may exist for this new technology.
10-13. Transportation & Distribution is a trade magazine that focuses on supply chain management, especially logistics.In fact, its Web site is www.totalsupplychain.com. The magazine includes numerous articles reporting on compa-nies' experiences with supply chain management. Select an article from
10-12. Locate an e-marketplace site on the Internet and describe it and the type of producers and suppliers it connects.
10-11. Describe the supply chain. in general terms, for McDon-ald's and for Toyota.
10-10. Explain why radio frequency identification (RFID) offers enhanced opportunities for security in global transportation and distribution, and how this in turn could improve supply chain efficiency.
10-9. Define the strategic goals of supply chain management.and indicate how each element of a supply chain (purchas-ing, production, inventory, and transportation and distribu-tion) has an impact on these goals.
10-8. Several automobile manufacturers are beginning to imple-ment programs for "build-to-order" cars. Identify an auto company that has initiated a BTO program and describe what it entails. Contrast the BTO program of this manufac-turer with a company experienced in BTO production like Dell
10-7. Describe the supply chain for your university or college.Who are the suppliers, producers, and distributors in this supply chain? Are there different supplier tiers? How would you evaluate this supply chain? Does inventory even exist, and if it does, what form does it take?
10-6. Purchasing is a trade magazine with the subtitle, The Magazine of Total Supply Chain Management and e-Procurement. Its articles include many examples of supply chain management at various companies. Research an arti-cle from Purchasing and write a brief paper on a company reporting on its
10-5. It has been suggested that SCOR might serve as an interna-tional supply chain certification tool much like ISO certifi-cation for quality. Explain how you think SCOR might be used as a certification tool.
10-4. Identify a business that employs EDI in its supply chain management and describe how it is used.
10-3. Describe how a business you are familiar with uses IT enablers in its supply chain management.
10-2. Explore the Web site of an ERP provider and describe the services it indicates it provides.
10-1. As Amazon.com grew rapidly after it first went online with Internet sales in 1995, it experienced several supply chain problems that other retail companies like L.L. Bean.Sears, and J.C. Penney were able to avoid. What might some of these problems be and why did Amazon and other dot.com
In the Third Battle of Bull Run, for which a CPM/PERT network was developed in Problem 9-18, General Beauregard would have won if his preparations had been completed in 15 days. What would the probability of General Beauregard’s winning the battle have been?
For the network in Problem 9-13, determine the earliest start and finish times, latest start and finish times, and slack for each activity. Indicate how the critical path would be determined from this information.
On May 21. 1927, Charles Lindbergh landed at Le Bourget Field in Paris, completing his famous transatlantic solo flight. The preparation period prior to his flight was quite hectic and time was critical, since several other famous pi-lots of the day were also planning transatlantic flights.Once
The following table provides the crash data for the project network in Problem 9-4. The normal activity times are considered to be deterministic and not probabilistic.Crash the network the maximum amount, indicate how much it would cost the bank, and identify the new critical path(s). Activity Time
For the Solved Problem at the end of this chapter, assume that the most likely times (m) are the normal activity times and the optimistic times (a) are the activity crash times, Further assume that the activities have the following nor-mal and crash costs:Crash the network the maximum amount
The following probabilistic activity time estimates are for the CPM/PERT network in Problem 9-6:Determine the following:a. Expected activity timesb. Earliest start and finish timesc. Latest start and finish timesd. Activity slacke. Critical path:f. Expected project duration and standard deviation
Construct a network from the information in the following table and identify all the paths in the network, compute the length of cach, and indicate the critical path. Activity 1 Activity Predecessor Time (weeks) 2 7 10 3 1 6 4 2 5 5 2 6 3,4 3 7 5,6 2
For the CPM/PERT network in Problem 9-11, determine the probability that the network duration will exceed 50 months.
The following probabilistic activity time estimates are for the network in Problem 9-9:b. Earliest start and finish timesc. Latest start and finish timesd. Activity slacke. Critical pathf. Expected project duration and standard deviation Time Estimates (months) Activity a m b 1 4 8 12 2 6 10 15 3 2
The following table provides the information necessary to construct a project network and project crash data;Activity Activity Time (weeks]Cost ($]Activity Predecessor Normal Crash Normal Crash a16 B2,000 4,400-b-14 19 1,000 1.800 Ca b500 700 da 514 600 1,300 42 1,500 3,000-6 4800: 1,600 gC 10
In one of the little-known battles of the Civil War, Gen-eral Tecumseh Beauregard lost the Third Battle of Bull Run because his preparations were not complete when the enemy attacked. If the critical path method had been available, the general could have planned better. Suppose that the following
The Stone River Textile Mill was inspected by OSHA and found to be in violation of a number of safety regulations.The OSHA inspectors ordered the mill to alter some existing machinery to make it safer (e.g., add safety guards); purchase some new machinery to replace older, dangerous machinery;and
S8-17. Baker Street Stereo is a catalogue ordering operation. The company maintains an ordering staff of 30 telephone oper-ators, who take orders from customers. Management wants to determine the proportion of time that operators are idle.A work sampling study was conducted at random over a
58-16. In Problem S8-2, the OM students have completed 100 ob-servations of the work sampling study and have a prelimi-nary result showing the fax machine is in use 31% of the time. How many additional observations are required based on this result?
$8-13. In Problem S8-5, how confident can Northwoods Back packers be in the standard time it computed if it assumed that the proportion of time that an operator is busy deter-mined from the work sampling study is accurate within+4%? How many additional observations might be needed for Northwoods to
$8-12. Puff 'n' Stuff Services is a small company that assembles mailings for clients in the Atlanta area. Different-size en-velopes are stuffed with various items such as coupons, ad-vertisements, political messages, and so on. by a staff of workers, who are paid on a piece-rate basis. A time
S8-11. The Rowntown Cub Company has 26 cabs. The local man-ager wants to conduct a work sampling study to determine what proportion of the time a cab driver is sitting idle, which he estimates is about 30%. The cabs were observed at random during a five-day period by the dispatcher, who simply
S8-10. In Problem S8-4, a time study was conducted for the job of sewing baseball-style caps. Using a sample standard devia-tion of 0.25. determine the number of cycles for the time study such that the company would be 98% confident that the average cycle time for the job is within 6% of the
58-4. A sewing operator at the Gameday Sportswear Company assembles baseball-style caps with a team logo from precut wedges of material that form the crown, a precut bill, and additional precut pieces of material for the headband and reinforcing. The job encompasses seven basic elements. A time
58-3. Determine the sample size for the time study of the stein as-sembly operation described in Problem S8-1. The Braykup China Company wants to be 95% confident that the average cycle time from the study is within 2% of the true average.
$8-2. The associate dean of the college of business at Tech has succumbed to faculty pressure to purchase a new fax ma-chine, although she has always contended that the machine would have minimal use. She has estimated that the ma-chine will be used only 20% of the time. Now that the ma-chine has
58-1. The Braykup China Company makes an assortment of gift and commemorative items with team and college logos, such as plates, bowls, and mugs. One popular item is a commemorative stein. The steins are all physically identi- cal, with the only style change being the team colors, name, and logo.
58-7. Describe the steps involved in conducting a work sample.
58-5. Select a job that you are conveniently able to observe, such as a secretary, store clerk, or custodian, and design a work sam-pling study for a specific job activity. Indicate how the initial estimate of the proportion of time for the activity would be determined and how the observation
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