a. Determine the optimal sequence.b. Determine the completion time. Six jobs are to be processed through a two-step operation. The first operation involves sanding, and the second involves painting.Processing times are as follows:JobOperation 1 (hours)Operation 2 (hours)105ABCDEIАсF753245447863

The sequence is defined as an order to move the operation with a fixed procedure. It defines the…

Answered: . Determine the optimal sequence. b.…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter12: Queueing Models

Section: Chapter Questions

Problem 59P

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A company assembles a product that consists of three pieces called AA, BB, and CC. The AA and BB parts are manufactured by the company itself, while the CC parts are purchased from another manufacturer. The process times, in hours, required for each piece in each of the processes are given in the following table: Process 1 Process 2 Process 3 Process 4 Process 5 AA 1 0.5 0.5 BB 1.5 0.5 0.5 0.5 The company has 20 machines that can carry out process 1, 5 process 2, 10 process 3, 5 process 4 and 5 process 5. Each machine works a maximum of five days each week at a rate of fifty weeks a year , in working days of 8 hours a day. Formulate and solve to determine the maximum number of assembled sets that you can produce.
The Trim-Look Company makes several lines of skirts, dresses, and sport coats. Recently, a consultant suggested that the company reevaluate its South Islander line and allocate its resources to products that would maximize contribution to profits and to overhead. Each product requires the same polyester fabric and must pass through the cutting and sewing departments. The following data were collected for the study: PROCESSING TIME (HR) Product Cutting Sewing Material (yd) Skirt 1 1 1 Dress 3 4 1 Sport coat 4 6 4 The cutting department has 100 hours of capacity, sewing has 180 hours of capacity, and 60 yards of material are available. Each skirt contributes $5 to profits and overhead; each dress, $17; and each sport coat, $30. a. Specify the objective function and constraints for this problem. b. Use a computer package such as POM for Windows to solve the problem.
WorkPro is a small manufacturer. It uses a job process for production. The following sample of jobs are listed in the order that they were received. Job Due Date Operation Time P 5 1 Q 20 8 R 8 5 S 11 6 T 3 12 When the shortest operating time (SOT) rule is applied to the sample of jobs, the resulting sequence is: A. Choos the following answer choice. T, P, R, S, Q R, S, T, P, Q P, Q, R, S, T P, R, S, Q, T B. In the WorkPro example above, average flow time for the sample of jobs when sequenced by the shortest operating time (SOT) rule is approximately: 19.8 14.2 4.8 6.4 C. In the WorkPro example above, average lateness for the sample of jobs when sequenced by the earliest due date (EDD) rule is approximately: Group of answer choices 10.4 4.8 7.8 5.8 D. Using the sample of jobs in the WorkPro example above, the shortest operating time (SOT) rule appears more attractive than the earliest due date (EDD) rule…
Natura has to fill 7 orders for its clients. He requires placing the required product in work boxes and subsequently closing them properly so that the product reaches the customer correctly. The process consists of filling the box and later closing it. As the content of each box and the size of these is different, the filling and closing times of each order is different. These times are shown in the table below. Orders Place in box (minutes) Closing Box (minutes) 1 9 6 2 8 5 3 7 7 4 6 3 5 1 2 6 2 6 7 4 7 a) Find the sequence to complete the orders in the shortest time possible. b) Using a Gantt chart, find the total time in which all orders will be completed using the sequence from part a.
Esplanade Marine Parts Inc. wants to produce parts in batches of 60 parts. Each part must be processed sequentially from workstation A to B. Processing Workstation Batch Size (Q) Time per Part 40 seconds A B 60 60 15 seconds a. How many seconds are required to produce the batch under the assumptions of batch processing? Round your answer to the nearest whole number. seconds b. How many seconds are required to produce the batch under the assumptions of single-piece flow processing? Round your answer to the nearest whole number. seconds C. Compare the two solutions in terms of time saved. Round your answer to the nearest whole number. Using the assumptions of -Select- processing saves seconds.
DreamInflate is a balloon manufacturing company. Balloon manufacturing consists of seven work stations, each performing a single step as indicated in the table below. There are five workers manned for the seven work stations as shown. Assume the workers are paid $15 per Worker Task Sequence Processing Time (secs/balloon) Task Dye production Electrocharging Dipping (Cold and Hot) Mortar Dipping Balloon inflation and delaltexing Vulcanization Inspection/Testing 1 30 w1 20 3 35 W2 25 W3 30 W4 6. 45 W5 7 40 hour. Each balloon pack is sold for $6 and has a variable cost of $1. The company has fixed costs of $200 per hour. There is more demand than the overall production system can provide. Based on the information provided, answer the following questions: • What is the cost of direct labor for balloons? • How much profit does DreamInflate make every hour? (note that the cost of direct labor is also a variable cost). What would the profit of DreamInflate be if the variable costs were 10…
Station 1 Machine A 20 min/unit Note: Station 1 Machine B 20 min/unit Station 2 12 min/unit Station 1 Machine A Station 1 Machine B Station 2 Station 3 Station 3 A three station work cell is illustrated in the image above. A unit needs to be processed at either Machine A or Machine B for Station 1 (parallel lines, both lines doing the exact same thing). The process time of each machine/station is indicated in the flowchart. The unit is then processed at Stations 2 and 3 before leaving the work cell. Specify the bottleneck(s). 8 min/unit 1- These are checkboxes, you can select more than one option if needed.
Why is it required to include an exception in the process scheduling?
Medical Solutions, Inc. has the following claims it must complete in the next week (40 hours). The jobs are as follows: Claim Type Spinal injury Number of Claims Setup (Changeover) to Process (Work Time per Claim Type (hours) Cancer treatment 15 Hip replacement Order Quantity) 14 10 SI Claims Workload: hours Processing Time per Claim (hours) HR Claims Workload: hours 3.0 1.1 2.5 0.9 1.5 All claims of the same type are processed together. Is 40 hours enough capacity? (Hint: use Equation 10.3.) Round your answers to one decimal place. CT Claims Workload: hours 0.5 Total workload is hours while capacity is 40 hours. The work -Select-cancannotItem 5 be completed using regular time hours.
Given the following information on job times and due dates, determine the optimal processingsequence using (1) FCFS, (2) SPT, (3) EDD, and (4) CR. For each method, find the average jobflow time and the average job tardiness. Jobs are listed in order of arrival.JobJob Time(hours)Due Date(hours)a 3.5 7b 2.0 6c 4.5 18d 5.0 22e 2.5 4f 6.0 20
Number of Processing Time for A Processing Time for B Processing Time for C (minutes) Resource Workers (minutes) (minutes) 1 2 2 2 4 4 5 1 15 3 2 6. 4
Panini, a popular sandwich shop, offers 3 types of sandwiches: grilled vegetables, grilled chicken, and pastrami. Demand (sandwiches per hour) are Grilled Vegetables = 25, Grilled Chicken = 15, and Pastrami = 10. There are up to five steps in the process of making sandwiches, listed below with processing times. Step Grilled Vegetables Grilled Chicken Pastrami 0.75 minutes 0.75 minutes 0.75 minutes 0.75 minutes 1.4 minutes 1.4 minutes - - - - 3 minutes 3 minutes 2 minutes 2 minutes 2 minutes 2 minutes 0.5 minutes 0.5 minutes 0.5 minutes 0.5 minutes Only 50 percent of customers want their sandwich toasted, no matter which sandwich is ordered. Suppose Panini employs 1 worker at each step. Instructions: Round all answers to 1 decimal place. What is the implied utilization of each of the five steps in this process? Cut ____% Grill ____% Slice ____% Toast…

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. Determine the optimal sequence. b. Determine the completion time.