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Question: What is the purpose of a planning


What is the purpose of a planning and control system related to scheduling?


> The Robin Hood Bank has noticed a decline in daily deposits. The average daily deposit has been running at $109 million with an average range of $15 million over the past year. The deposits for the past six days have been 110, 102, 96, 87, 115, and 106.

> What are the benefits and costs of a Lean Six Sigma program and how should they be tracked?

> A cause-and-effect diagram is used to identify the possible causes of defects. Draw a CE diagram for the following situations: a. Your car doesn’t start in the morning. b. You received a low grade on your last exam. c. A student fails to graduate from co

> Which of the four manufacturing quality dimensions are most likely to improve revenue? Which ones are related more to cost reduction or to both revenue and cost?

> Discuss how lean thinking can lead to a reduction of costs (material, labor, overhead), other than inventory. Be specific.

> Use the key questions of what, who, where, when, and how for problem 7 to suggest improvements in the processes.

> Describe service blueprinting in your own words, including examples of when it should be used.

> Why is the service-profit chain important to operations management?

> Give an example of mass customization not discussed in the chapter.

> Describe an operation where higher quality will cost more. What is your definition of quality? Why does higher quality cost more? If you use a different definition of quality, will higher quality cost less?

> For the organizations listed in question 7, describe the inputs, transformation process, and outputs of the production system.

> What services are provided by the following 3PL providers: C.H. Robinson, Ryder, and Penske Logistics?

> Why would a world-renowned organization, Mayo Clinic, already known for quality embark on a quality improvement journey?

> Daily demand for a certain product is normally distributed, with a mean of 100 and a standard deviation of 15. The supplier is reliable and maintains a constant lead time of 5 days. The cost of placing an order is $10 and the cost of holding inventory is

> What are the advantages and disadvantages of a single source?

> Relate off-shoring to outsourcing to global sourcing.

> A telephone is assembled from a handset and a base. The handset in turn is assembled from a handle and a cord, and the base is assembled from a case, a circuit board, and a face plate. A BOM and a sketch of the phone, along with the numbers of parts on h

> A company president said his firm was too small to afford an MRP system. Discuss.

> What is the appropriate role of inventory turnover as a measure for evaluating the management of inventory? Under what circumstances is high turnover detrimental to a firm?

> The professor from problem 6 is considering reducing the time for completion of the project. He can hire a teaching assistant (TA) to help with the new course, but this will cost additional money. The TA can help reduce the times only for activities A, D

> What is meant by the need to make trade-offs between cost, performance, and schedule? Give examples.

> A secretary is considering three dispatching rules for typing term papers. The following information is given on jobs that are waiting to be typed: Use the following dispatching rules to determine the sequence for term paper processing. a. SPT b. FCFS

> What is the goal as stated by the theory of constraints (TOC), and how is that goal achieved?

> Approximately 40 percent of a medical clinic’s weekly incoming calls for doctors’ appointments occur on Monday. Due to this large workload, 20 percent of the callers receive a busy signal and have to call back later. The clinic has one clerk for each two

> How would you describe the current situation facing U.S. Stroller?

> It has been said that aggregate planning is related to personnel planning, budgeting, and market planning. Describe the nature of the relationship among these types of planning.

> At the ABC Floral Shop, an argument developed between two of the owners, Bob and Henry, over the accuracy of forecasting methods. Bob argued that exponential smoothing with α = .1 would be the best method. Henry argued that the shop would get a better fo

> How should the choice of α be made for exponential smoothing?

> A machining operation requires close tolerances on a certain part for automobile engines. The current specification for this measurement is 3.0 cm ± .001. The quality control procedure is to take a sample of 4 units and measure each of the

> Which technique would be useful for each of the following situations? a. To rank-order the causes of a quality problem. b. To brainstorm the reasons why a product might have failed. c. To find an assignable cause. d. To determine if a process range is un

> What products have recently been recalled? Why? Check the U.S. Consumer Product Safety Commission website.

> A supplier provides parts to a manufacturing company that demands frequent deliveries. At the present time it takes six hours to make a round trip between the supplier’s warehouse and the customer, including loading, travel, and unloading time. The lot s

> How do workers and managers in a lean production system differ from their counterparts in traditional non lean environments?

> Give an example of the service-profit chain for movie theaters. Define each of the components in the chain and explain how you would measure each.

> Suppose that a firm is considering moving from a batch process to an assembly-line process to better meet evolving market needs. What concerns might the following functions have about this proposed process change: marketing, finance, human resources, acc

> What are the problems in this case?

> Find examples of modular design of products in everyday life.

> Describe the nature of operations management in the following organizations. In doing this, first identify the outputs of the organization and then use the five decision types to identify important operations decisions and responsibilities. a. A college

> How is the Gantt chart used as a scheduling tool? When should the Gantt chart be used in preference to network based methods?

> From the Internet find out how many warehouses and DCs are operated by Best Buy, Target, or another large retailer. What is the ratio of DCs and warehouses to the number of retail stores for each of these? What factors affect this ratio?

> The Zomcast cable TV company is considering outsourcing its call center to the Philippines. The cost of hiring operators and staff in the Philippines is 60 percent of the salary and benefits paid in the U.S. The operators are slightly less efficient at h

> What are the benefits of supply base optimization?

> How would you decide whether a supply chain needs improvement in supply chain structure, supply chain systems, or both?

> Is it possible to control financial totals without physical control of materials in manufacturing?

> The Co-op in problem 6 has discovered that it should establish a safety stock for its sweatshirts. It wants to use a reorder point system with a two-week lead time. The demand over a two-week interval has an average of 450 units and a standard deviation

> How should a manager decide the appropriate service level for finished goods items? Should some items have a 100 percent service level?

> Define the service-product bundle that is being provided for guests, including the tangible services, the intangible services and the facilitating goods. Do you see any missing elements or areas of possible improvement?

> Construction of a building is based on the following CPM network: a. Draw the network for this project and label the activities. b. What are the normal project completion time and normal cost? c. Identify the critical path. d. How much will it cost to

> At the University Hospital, five blood samples must be scheduled through a blood-testing laboratory. Each sample goes through up to four different testing stations. The times for each test and the due dates for each sample are as follows: a. Using a Ga

> A company produces to a seasonal demand, with the forecast for the next 12 months as given below. The current labor force can produce 500 units per month. Each employee can produce 20 units per month and is paid $2,000 per month. The inventory-carrying c

> The XYZ Company manufactures a seasonal product. At the present time, the company uses a level labor force as a matter of company policy. The company is afraid that if it lays off workers, it will not be able to rehire them or find qualified replacements

> Compute the errors of bias and absolute deviation for the forecasts in problem 6. Which of the forecasting models is the best?

> What are the advantages of exponential smoothing over the moving average and the weighted moving average?

> The producer of electronic circuits in problem 4 has reconsidered the method of quality control and has decided to use process control by variables instead of attributes. For variables control, a circuit voltage will be measured using a sample of five ci

> How is a Pareto chart used to improve quality?

> How can supplier certification contribute to quality products or services? Should all suppliers be certified? Why or why not?

> What are the major problems being faced by Eastern Gear?

> Suppose that a lean work center is being operated with a lot size of 50 units. Assume that 200 parts are demanded per hour and it takes three hours to circulate a container, including all setup, run, move, and idle time. a. Calculate the number of kanban

> Describe typical supplier relations before and after embracing lean tenets.

> Why is it important to define the system of interest before embarking on improvement? Give three reasons.

> Define a possible service guarantee for each of the following services: a. College classes b. A theater performance c. Buying a used car

> What are the strategies of the following organizations? Is the strategy defined in terms of product or process or both? a. McDonald’s b. AT&T Telephone Co. c. General Motors d. Harvard Business School

> What form does the product specification take for the following firms: a travel agency, a beer company, and a consulting firm?

> Define some of the strategic decisions that might be required in a grocery store’s operation and its supply chain depending on whether the strategy was emphasizing imitation or innovation.

> How should quality improvement be measured and knowledge disseminated?

> Give some examples of where offshoring has caused quality and delivery problems.

> Using the center-of-gravity model, locate the X and Y coordinates of a warehouse to serve three different customers as follows: Y Demand Customer coordinate coordinate (Ibs.) Bravo 100 20 8000 Delta 60 60 20,000 Lima 30 90 9000

> Calculate economic order quantities for each of the three types of toys. The EOQ formula is recommended from the supplement to Chapter 14 that considers uniform lot delivery of toys. EOQ = 2SD/iC

> Take a recent high visibility warehouse location decision and enumerate the relevant factors that were considered (e.g., taxes incentives, labor, etc.).

> A software company is considering outsourcing one of its software products to India for maintenance and support services. The annual costs in the U.S. and India are as follows: It will cost $90,000 o train the personnel in India to take over the mainte

> Considering the data and calculations from question 5: a. Which entities in the supply chain have the worst performance in terms of throughput time, cash-to-cash, added unit cost, and on-time delivery? b. Where should improvements be made to benefit the

> A firm makes a basic scissors consisting of three parts: the left side, the right side, and the screw that holds the sides together. At the present time, the firm has the following numbers of parts on hand and on order. The lead times for reorder of each

> Describe the advantages of cycle counting over an annual physical inventory.

> The Harvard Co-op orders sweatshirts with the Harvard University emblem on them and sells them for $50 each. During a typical month, 900 sweatshirts are sold (this includes all styles and sizes ordered from a particular supplier). It costs $25 to place a

> Suppose you are managing the Speedy Hardware Store. Give examples of items that might be managed by a P system and other items for which a Q system might be used. How do these items differ?

> In preparing to teach a new course, the professor has estimated the following activity times. a. Find the completion time of the project. b. What is the critical path? Start B End

> What is the management significance of finding the critical path through a network?

> The Security Life Insurance Company processes all new life insurance policies through three departments: incoming mail (I), underwriting (U), and policy control (P). The incoming mail department receives applications and customer payments and then routes

> What would you recommend that Joe Jr. do, assuming he takes control of Southern Toro?

> Why are m × n machine-scheduling algorithms not widely used in practice?

> S&OP or aggregate planning sometimes is confused with scheduling. What is the difference?

> Using the data in problem 2, prepare exponentially smoothed forecasts for the following cases: a. α = .1 and F 1 = 90 b. α = .3 and F 1 = 90

> What type of time-series components would you expect for the following products and services? a. Monthly sales of a retail florist. b. Monthly sales of milk in a supermarket. c. Daily demand in a call center.

> In a control chart application, we have found that the grand average over all past samples of 6 units is x = 30 and R = 5. a. Set up x and R control charts. b. The following measurements are taken from a new sample: 38, 35, 27, 30, 33, and 32. Is the pro

> Define the purpose of continuous improvement of quality.

> Can you name products and services that, in your opinion, have relatively poor quality? Relatively high quality? Are companies that provide better quality more successful? How can you tell?

> A company is in the business of machining parts that go through various work centers. Suppose work center A feeds work center B with parts. The following times (in minutes) are given for each work center. A standard kanban container holds 50 parts that

> How can lot sizes and inventories be reduced in a lean production system? Discuss specific approaches.

> A furniture factory makes two types of wooden tables, large and small. See the flowchart below. Small tables are made in batches of 100, and large tables are made in batches of 50. A batch includes a fixed setup time for the entire batch at each proces

> Design an inventory control system for this business. Provide the formulas that you would use for a P System, Q system or other system you design. Compare these to the formulas currently used. Examine the data from the Appendix to note any peculiarities

> What kinds of problems are presented by the redesign of existing processes that are not encountered in the design of a new process?

> Identify the front office and back office services for the following organizations. Could these services be improved by increasing or decreasing the degree of customer contact? By separating low- and high-contact services? a. Hospital b. Trucking firm c.

> A company is in the business of making souvenir spoons to customer order. The customers select the size of the spoons and may specify the design to be embossed on them. One or more spoons may be ordered. The company is considering going into the make-to-

> What is the proper role of the operations function in product design?

> Evaluate a couple of local hospitals in terms of its emphasis on the four operations objectives: cost, quality, delivery, and flexibility. Are all departments focused on the same objectives? What are the order winners and the order qualifiers?

> How is the operations management function related to activities in human resources, information systems, and accounting?

> Can you be sure that all the parts produced by in-control processes will meet the specification?

> How should Andrea deal with the organization issues presented in this case?

> The ABC Company plans to locate a warehouse using the center-of-gravity model to serve four different customers. Find the coordinates for the warehouse given the following information: Y Demand Customer coordinate coordinate (Ibs.) 20 80 9000 50 05

> From the Internet find examples of distribution centers or warehouses and list the functions that they serve.

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