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Chapter 2: 2DQ (page 216)
Relative to the behavioral science discussion, what practical advice do you have for a hotel manager to enhance the ending of a guest鈥檚 stay in the hotel?
Hotel guests' behaviours, interests, as well as aspirations are changing rapidly.
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The Goodparts Company produces a component that is subsequently used in the aerospace industry. The component consists of three parts (A, B, and C) that are purchased from outside and cost 40, 35, and 15 cents per piece, respectively. Parts A and B are assembled first on assembly line 1, which produces 140 components per hour. Part C undergoes a drilling operation before being finally assembled with the output from assembly line 1. There are in total six drilling machines, but at present only three of them are operational. Each drilling machine drills part C at a rate of 50 parts per hour. In the final assembly, the output from assembly line 1 is assembled with the drilled part C. The final assembly line produces at a rate of 160 components per hour. At present, components are produced eight hours a day and five days a week. Management believes that if need arises, it can add a second shift of eight hours for the assembly lines. The cost of assembly labor is 30 cents per part for each assembly line; the cost of drilling labor is 15 cents per part. For drilling, the cost of electricity is one cent per part. The total overhead cost has been calculated as \(1,200 per week. The depreciation cost for equipment has been calculated as \)30 per week.
a. Draw a process flow diagram and determine the process capacity (number of components produced per week) of the entire process.
b. Suppose a second shift of eight hours is run for assembly line 1 and the same is done for the final assembly line. In addition, four of the six drilling machines are made operational. The drilling machines, however, operate for just eight hours a day. What is the new process capacity (number of components produced per week)? Which of the three operations limits the capacity?
c. Management decides to run a second shift of eight hours for assembly line 1 plus a second shift of only four hours for the final assembly line. Five of the six drilling machines operate for eight hours a day. What is the new capacity? Which of the three operations limits the capacity?
d. Determine the cost per unit output for questions (b) and (c).
e. The product is sold at \(4.00 per unit. Assume that the cost of a drilling machine (fixed cost) is \)30,000 and the company produces 8,000 units per week. Assume that four drilling machines are used for production. If the company had an option to buy the same part at $3.00 per unit, what would be the break-even number of units?
Students arrive at the Administrative Services Office at an average of one every 15 minutes, and their requests take on average 10 minutes to be processed. The service counter is staffed by only one clerk, Judy Gumshoes, who works eight hours per day. Assume Poisson arrivals and exponential service times.
a) What percentage of time is Judy idle?
Question: Avis Company is a car rental company that is located three miles from the Los Angeles airport (LAX). Avis is dispatching a bus from its offices to the airport every 2 minutes. The average traveling time (round-trip) is 20 minutes.
a. How many Avis buses are traveling to and from the airport?
b. The branch manager wants to improve the service and suggests dispatching buses every 0.5 minutes. She argues that this will reduce the average traveling time from the airport to Avis offices to 2.5 minutes. Is she correct? If your answer is negative, then what will the average traveling time be?
Question: An important difference between service and manufacturing operations is that customers introduce far more variability into the operations in a service system. Name at least three of the basic types of variation that customers bring to a service system.
Question: How much time on average would a server need to spend on a customer to achieve a service rate of 20 customers per hour?
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