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hotel operations management
Operations Management For Competitive Advantage 11th Edition Richard B. Chase, F. Robert Jacobs - Solutions
Where does Hard Rock fit in the four international operations strategies outlined in Figure 2.9? Explain your answer.
The 10 decisions of OM:a) are functional areas of the firm.b) apply to both service and manufacturing organizations.c) are the goals that are to be achieved.d) form an action plan to achieve a mission.e) are key success factors.
The relatively few activities that make a difference between a firm having and not having a competitive advantage are known as:a) activity maps.b) SWOT.e) key success factors.d) global profile.e) response strategy.
A company that is organized across international boundaries, with decentralized authority and substantial autonomy at each business via subsidiaries, franchises, or joint ventures has:a) a global strategy.b) a transnational strategy.c) an international strategy.d) a multidomestic strategy.e) a
When will the entire project be completed?
What are the critical activities or tasks in the project-that is, which activities will delay the entire project if they are late?
Which are the noncritical activities-the ones that can run late without delaying the whole project's completion?
What is the probability that the project will be completed by a specific date?
At any particular date, is the project on schedule, behind schedule, or ahead of schedule?
On any given date, is the money spent equal to, less than, or greater than the budgeted amount?
Are there enough resources available to finish the project on time?
If the project is to be finished in a shorter amount of time, what is the best way to accomplish this goal at the least cost?
The work breakdown structure for building a house. (levels 1 and 2) is shown below: She Preparation Masonry Carpentry Plumbing Finishinga) Add two level-3 activities to each of the level-2 activities to pro- vide more detail to the WBS.b) Select one of your level-3 activities and add two level-4
Draw the activity-on-node (AON) project network associated with the following activities for Dave Carhart's consult- ing company project. How long should it take Dave and his team to complete this project? What are the critical path activities? Activity Immediate Predecessor(s) Time (days) a b C d
Given the activities whose sequence is described by the following table, draw the appropriate activity-on-arrow (AOA) net- work diagram.a) Which activities are on the critical path?b) What is the length of the critical path? Activity ABCDEFGH I Immediate Predecessor(s) Time (days) A 52 2 A 4 B 5 B
Using AOA, diagram the network described below for Sarah McComb's construction project. Calculate its critical path. How long is the minimum duration of this network? Time Time Activity Nodes (weeks) Activity Nodes (weeks) IKL J 1-2 10 1-3 8 2-4 6 M 2-3 3 NOP 3-4 4-5 3-5 275 2 7
Shirley Hopkins is developing a program in leadership training for middle-level managers. Shirley has listed a number of activities that must be completed before a training program of this nature could be conducted. The activities, immediate predecessors, and times appear in the accompanying
Task time estimates for a production line setup project at Robert Klassen's Ontario factory are as follows: Immediate Activity Time (in hours) Predecessors A 6.0 CRCDEFG B 7.2 5.0 A 6.0 B, C 4.5 B, C 7.7 D 4.0 E, Fa) Draw the project network using AON.b) Identify the critical path.c) What is the
Refer to the table in Problem 3.8.a) Draw the AON network for the construction activity.b) Draw the AOA network for the construction activity.
The activities needed to build an experimental chemical contaminant tracking machine at Charlie Cook Corp. are listed in the following table. Construct an AON network for these activities. Activity Immediate Predecessor(s) Immediate Predecessor(s) A B D A A Activity E B F B G C, E H D, F
Charlie Cook (see Problem 3.10) was able to deter- mine the activity times for constructing his chemical contaminant tracking machine. Cook would like to determine ES, EF, LS, LF, and slack for each activity. The total project completion time and the crit- ical path should also be determined. Here
The activities described by the following table are given for the Duplaga Corporation: Activity Immediate Predecessor(s) Time ABCDERCHL A A D B 9236 B 9 4 G E, F D I G, H 653 3a) Draw the appropriate AON PERT diagram for Ed Duplaga's management team.b) Find the critical path.c) What is the project
A small renovation of a Hard Rock Cafe gift shop has six activities (in hours). For the following estimates ofa, m, andb, calculate the expected time and the standard deviation for each activity: Activity a b ABCDEE 11 15 19 27 31 41 18 18 18 8 13 19 17 18 20 F 16 19 22
The following is a table of activities associated with a project at Bill Figg Enterprises, their durations and what activities each must precede: Activity A (start). B C E F (end) Duration (weeks) 1 1 Precedes B, C E 4 F 22 F 2a) Draw an AON diagram of the project, including activity durations.b)
Assume that the activities in Problem 3.15 have the fol- lowing costs to shorten: A, $300/week; B, $100/week; C, $200/week; E, $100/week; and F, $400/week. Assume also that you can crash an activity down to 0 weeks in duration and that every week you can shorten the project is worth $250 to you.
Three activities are candidates for crashing on a proj- ect network for a large computer installation (all are, of course, critical). Activity details are in the following table: Normal Normal Crash Crash Activity Predecessor Time Cost Time Cost ABC 7 days $6,000 6 days $6,600 A 4 days 1,200 2 days
The estimated times and immediate predecessors for the activities in a project at Caesar Douglas's retinal scanning com- pany are given in the following table. Assume that the activity times are independent. Activity ABCD Immediate Predecessor Time (weeks) a m b 9 10 11 | AR 4 10 16 9 10 11 B 5 8
Dream Team Productions, a firm hired to coordinate the release of the movie Paycheck (starring Uma Thurman and Ben Affleck), identified 16 activities to be completed before the release of the film.a) How many weeks in advance of the film release should Dream Team have started its marketing
Using PERT, Harold Benson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4.a) What is the probability that the project will be completed in 17 months?b) What is the probability that the project will
Bolling Electronics manufactures DVD players for commercial use. W. Blaker Bolling, president of Bolling Electronics, is contemplating producing DVD players for home use. The activities necessary to build an experimental model and related data are given in the following table: Normal Crash Time
The Maser is a new custom-designed sports car. An analysis of the task of building the Maser reveals the following list of relevant activities, their immediate predecessors, and their duration: Job Letter Description A Start B Design C Order special accessories D Build frame E Build doors F Attach
What is the probability of finishing in 270 days?
If it is necessary to crash to 250 or 240 days, how would Hill do so, and at what costs? As noted in the case, assume that opti- mistic time estimates can be used as crash times.
Develop the network for planning and construction of the new hospital at Arnold Palmer.
What is the critical path and how long is the project expected to take?
Why is the construction of this 11-story building any more com- plex than construction of an equivalent office building?
What percent of the whole project duration was spent in planning that occurred prior to the proposal and reviews? Prior to the actual building construction? Why?
Identify the critical path and its activities for Rockfest. How long "The level-1 activity is the Rockfest concert itself. does the project take?
Which activities have a slack time of 8 weeks or more?
Identify five major challenges a project manager faces in events such as this one.
Why is a work breakdown structure useful in a project such as this? Take the 26 activities and break them into what you think should be level-2, level-3, and level-4 tasks. There are actually 127 activities used by Tomasso; the list is abbreviated for this case study. "You may wish to view the
Which activities have a slack time of 8 weeks or more?
Identify five major challenges a project manager faces in events such as this one.
Why is a work breakdown structure useful in a project such as this? Take the 26 activities and break them into what you think should be level-2, level-3, and level-4 tasks. There are actually 127 activities used by Tomasso; the list is abbreviated for this case study.
Slack time equals:a) ES +1.b) LS-ES.c) zero.d) EF-ES.
The Triple X Company manufactures and sells refrigerators. It makes some of the parts for the refrigerators and purchases others. The engineering department believes it might be possible to cut costs by manufacturing one of the parts currently being purchased for $8.25 each. The firm uses 100,000
For five years Bennie's Brewery has been using a machine that attaches labels to bottles. The machine was purchased for $4,000 and is being depreciated over 10 years to a $0 salvage value using straight- line depreciation. The machine can be sold now for $2,000. Bennie can buy a new labeling
7 Willard Lock Company is losing market share because of horrendous due-date performance and long delivery lead times. The company's inventory level is high and includes many finished goods that do not match the short-term orders. Material control analysis shows that purchasing has ordered on time,
15 Discuss why transfer batches and process batches many times may not and should not be equal.
14 Most manufacturing firms try to balance capacity for their production sequences. Some believe that this is an invalid strategy. Explain why balancing capacity does not work.
13 What are operations people's primary complaints against the accounting procedures used in most firms? Explain how such procedures can cause poor decisions for the total company.
12 From the standpoint of the scheduling process, how are resource limitations treated in an MRP application? How are they treated in a synchronous manufacturing application?
11 Discuss the concept of "drum-buffer-rope."
10 Discuss how a production system is scheduled using MRP logic, JIT logic, and synchronous manufacturing logic.
9 Define process batch and transfer batch and their meaning in each of these applications: MRP, JIT, and bottleneck or constrained resource logic.
8 What are the functions of inventory in MRP, JIT, and synchronous manufacturing scheduling?
7 Explain how a nonbottleneck can become a bottleneck.
6 Define and explain the cause or causes of a moving bottleneck.
5 Discuss what is meant by forward loading and backward loading.
4 Compare the importance and relevance of quality control in JIT, MRP, and synchronous manufacturing.
3 Compare and contrast JIT, MRP, and synchronized manufacturing, stating their main features, such as where each is or might be used, amounts of raw materials and work-in-process inven- tories, production lead times and cycle times, and methods for control.
2 Discuss process batches and transfer batches. How might you determine what the sizes should be?
1 State the global performance measurements and operational performance measurements and briefly define each of them. How do these differ from traditional accounting measurements?
Here is the process flow for Products A, B, and C. Products A, B, and C sell for $20, $25, and $30, respectively. There are only one Resource X and one Resource Y, which are used to produce A, B, and C for the numbers of minutes stated on the diagram, Raw materials are needed at the process steps
In this example, shown in Exhibit 18.15, there are two workers producing four products. The plant works three shifts. The market demand is unlimited and takes all the products that the workers can pro- duce. The only stipulation is that the ratio of products sold cannot exceed 10 to 1 between the
In this first example, three products (A, B, and C) are sold in the market at $50, $75, and $60 per unit, respectively. The market will take all that can be supplied. Three work centers (X, Y, and Z) process the three products as shown in Exhibit 18.14. Processing times for each work center are
Question 5: What happens if instead of "M2" being the bottleneck, "Joe" is the bottleneck? Do the buffers at "Joe" and "Next" have any impact? This exercise, which uses LineSim.xls, is an oppor- tunity to study the impact that variability in processing time has on the capacity of a simple serial
Question 4: What would be the impact on system perfor- mance if "M2" had a processing time that averaged 6 time units? (Assume that "Joe" and "Next" still run at an average of 5.) What happens to the inventory after "Joe" and "Next"? Does varying the size of these inventories have any impact? This
Question 3: Create a graph that shows the impact of changing the buffer stock on the output of the system. Consider buffer levels that vary from 0 to a maximum of 20 units. What can you conclude from your experiment? Finally, experiment with the impact of a bottleneck in the system. This exercise,
Question 2: How many units did you actually produce per 100 time periods? Explain any difference between your simulation result and your estimate made in Question 1. Next map the impact that increased buffer inventory has on the output of the system. You can change the buffer behind "Joe" and
Question 1: How many units would you expect to be able to produce over 100 time periods? Click the "Run" tab and, using the default values for "Run-In Time," "Run Length," and "Repetitions," run the simulation. Tabulate the average utilization at each machine based on the five repetitions, and
8 What is the importance of run length in simulation? Is a run of 100 observations twice as valid as a run of 50? Explain.
7 Distinguish between known mathematical distributions and empirical distributions. What information is needed to simulate using a known mathematical distribution?
6 What are the pros and cons of starting a simulation with the system empty? With the system in equilibrium?
5 What methods are used to increment time in a simulation model? How do they work?
4 Must you use a computer to get good information from a simulation? Explain.
3 What determines whether a simulation model is valid?
2 What roles does statistical hypothesis testing play in simulation?
1 Why is simulation often called a technique of last resort?
To illustrate how to relate random numbers to a standard distribution, suppose that daily demand for newspapers from a vending machine is normally distributed with a mean of 55 and standard deviation of 10. (This distribution is shown on the right side of Exhibit TN17.2.) Under this assumption, the
4 Prepare a schedule starting at 9A.M. for the following patients of Dr. Schafer: Johnny Appleseed, a splinter on his left thumb. Mark Borino, a new patient. Joyce Chang, a new patient. Amar Gavhane, 102.5 degree (Fahrenheit) fever. Sarah Goodsmith, an immunization. Tonya Johnston, well-baby
3 How were the special cases such as latecomers and no-shows handled? Good doctor-patient relations begin with both parties being punctual for appointments. This is particularly important in my specialty-pediatrics. Mothers whose children have only minor problems don't like them to sit in the
2. What procedures were followed to keep the appointment system flexible enough to accommodate the emergency cases, and yet be able to keep up with the other patients' appointments? Good doctor-patient relations begin with both parties being punctual for appointments. This is particularly important
1 What features of the appointment scheduling system were crucial in capturing "many grateful patients"?Good doctor-patient relations begin with both parties being punctual for appointments. This is particularly important in my specialty-pediatrics. Mothers whose children have only minor problems
8 An accounting firm, Debits R Us, would like to keep its auditing staff to a maximum of five people and still satisfy the staffing needs and the policy of two days off per week. Given the fol- lowing requirements, is this possible? What should the schedule be? Requirements (Monday through Sunday):
11 How might planning for a special customer affect the personnel schedule in a service?
10 Under what conditions is the assignment method appropriate?
9 Why is managing bottlenecks so important in job-shop scheduling?
8 What job characteristics would lead you to schedule jobs according to "longest processing time first"
7 Why does batching cause so much trouble in job shops?
6 Data integrity is a big deal in industry. Why?
5 The SOT rule provides an optimal solution in a number of evaluation criteria. Should the man- ager of a bank use the SOT rule as a priority rule? Why?
4 What priority rule do you use in scheduling your study time for midterm examinations? If you have five exams to study for, how many alternative schedules exist?
3 What practical considerations are deterrents to using the SOT rule?
2 Distinguish between a job shop, a GT cell, and a flow shop.
1 What are the objectives of work-center scheduling?
Suppose that a scheduler has five jobs that can be performed on any of five machines (n = 5). The cost of completing each job-machine combination is shown in Exhibit 17.5. The scheduler would like to devise a minimum-cost assignment. (There are 5!, or 120, possible assignments.)
2 Work center capacities and costs follow. Repeat Question 1 creating a feasible schedule (within the capacities of the machine centers) and compute the relevant costs. Do this by adjusting the MPS only. Try to minimize the total cost of operation for the 27 weeks. Use Microsoft Excel to solve the
1 Disregarding machine center limitations, develop an MRP schedule and also capacity profiles for the four machine centers.Use Microsoft Excel to solve the Nichols Company case. (Note that if you start from scratch, it will take several hours to answer Question 1, about the same for Question 2, and
14 Product A consists of two units of Subassembly B, three units of C, and one unit of D. B is com- posed of four units of E and three units of F. C is made of two units of H and three units of D. His made of five units of E and two units of G. a Construct a simple bill of materials (product
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