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Concept explainers
(a)
Interpretation:The mean flow time and average tardiness are to be determined for problem 45 (a) assuming EDD sequence.
Concept Introduction:
The earliest due date or EDD sequence is a method in which jobs will be arranged in increasing order sequence of the due date.
(b)
Interpretation:The mean flow time and average tardiness are to be determined for problem 45 (b) assuming EDD sequence.
Concept Introduction:
The earliest due date or EDD sequence is a method in which jobs will be arranged in increasing order sequence of the due date.
(c)
Interpretation: The mean flow time and average tardiness are to be determined for problem 45 (c) assuming EDD sequence.
Concept Introduction:
The earliest due date or EDD sequence is a method in which jobs will be arranged in increasing order sequence of the due date.
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Chapter 9 Solutions
Production and Operations Analysis, Seventh Edition
- A process improvement team is working to improve the production output at the Johnson Manufacturing plant’sHeader Cell that manufactures a key component, headers, used in commercial air conditioners. A header is partof the circulatory system of a commercial air conditioner that moves coolant between various components suchas the evaporator coil and the condenser coil. Currently, the header production cell is scheduled separately fromthe main work in the plant. Often, individual headers are not sequenced to match the product they go into on thefinal assembly line in a timely fashion, and so the product can sit in queue waiting for a headerarrow_forwardScenario The KOREAN factory of Hi-Tech Metal, Inc. primarily manufactures plumbing system parts for gas pipes, drainage pipes, water supply pipes and hoses etc. A mainframe computer was used for scheduling, but it took a lot of time and unnecessarily put heavy workload on scheduling managers and on-site workers. Following are the associated problems to meet customers’ needs Lengthy 3 to 4 days schedule drafting time, caused by mainframe computer’s long processing time. Inflexibility of mainframe computer to sudden order changes, leading to tedious manual calculation and direct on-site adjustment Extra workload for on-site workers One-month base scheduling that cannot meet customers’ need, Task 4 Considering above scenario justify improvements and alternatives to design and manufacturing of plumbing system. [Improvements, alternative systems, explain the IoT systems and Industry4.0 impacts]arrow_forwardScenario The KOREAN factory of Hi-Tech Metal, Inc. primarily manufactures plumbing system parts for gas pipes, drainage pipes, water supply pipes and hoses etc. A mainframe computer was used for scheduling, but it took a lot of time and unnecessarily put heavy workload on scheduling managers and on-site workers. Following are the associated problems to meet customers’ needs Lengthy 3 to 4 days schedule drafting time, caused by mainframe computer’s long processing time. Inflexibility of mainframe computer to sudden order changes, leading to tedious manual calculation and direct on-site adjustment Extra workload for on-site workers One-month base scheduling that cannot meet customers’ need, Task 1 Considering above scenario Summarize the design process for the finished component [Identify components, explain the utilities and design process (5/7/10 step) for components]arrow_forward
- Scenario The KOREAN factory of Hi-Tech Metal, Inc. primarily manufactures plumbing system parts for gas pipes, drainage pipes, water supply pipes and hoses etc. A mainframe computer was used for scheduling, but it took a lot of time and unnecessarily put heavy workload on scheduling managers and on-site workers. Following are the associated problems to meet customers’ needs Lengthy 3 to 4 days schedule drafting time, caused by mainframe computer’s long processing time. Inflexibility of mainframe computer to sudden order changes, leading to tedious manual calculation and direct on-site adjustment Extra workload for on-site workers One-month base scheduling that cannot meet customers’ need, Task 3 Considering above scenario identify the manufacturing system for the components [Based on the stakeholder, strategic goals , explain the manufacturing system]arrow_forwardCurrently a company that designs Web sites has five customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. The customers are ready to be scheduled today, which is the start of day 190. Customer Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) Upper AA 6 18 66 Upper BB 3 24 58 Upper CC 2 32 100 Upper DD 10 22 26 Upper EE 8 12 50 a. Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average days past due. Part 2 Using the FCFS (first come, first served) decision rule for sequencing the customers, the order is: Sequence 1 2 3 4 5 Customer D E A B C Part 3 Using…arrow_forwardProblem 9-1 (Static) [The following information applies to the questions displayed below.] The following are the car repair shop data: Ticket No. 1 2 3 4 5 6 7 8 9 10 Work Tires Lube & oil Tires Battery Lube & oil Lube & oil Lube & oil Brakes Lube & oil Tires Click here for the Excel Data File Problem 9-1 Part a (Static) Work Type Lube & oil Brakes Tires Battery Transmission Total Ticket No. 11 Frequency 1293999998 14 15 16 17 20 Work Brakes Lube & oil a. Prepare a check sheet for the above car repair shop data: Battery Lube & oil Lube & oil Tires Lube & oil Brakes Tires Brakes Ticket No. 21 3222222222 24 25 26 27 28 29 30 Work Lube & oil Brakes Transmission Brakes Lube & oil Battery Lube & oil Battery Brakes Tiresarrow_forward
- Mike’s Auto Body Shop has five cars waiting to be repaired. The shop is quite small, so only one car can be repaired at a time. The number of days required to repair each car and the promised date for each are given in the following table. (given) Mike has agreed to provide a rental car to each customer whose car is not repaired on time. Compare the performance of the four sequencing rules FCFS, SPT, EDD, and CR relative to minimizing average tardiness.arrow_forwardJack's Refrigeration Repair Service repairs and reconditions commercial icemakers at restaurants. Jack has four jobs to complete. Below are their processing times and due dates: Job Processing time (hours) Due date (hour) A 20 50 B 10 40 C 15 35 D 55 75 What is the average inventory if jobs are processed using the earliest due date rule?arrow_forwardProctoring Enabled: Chapter 12 Computer Simulati. O Help Save & Exit Submit Saved Given this frequency distribution, what demand values would be associated with the following random numbers? (Do not round intermediate calculations.) Demand Frequency 29 1 23 2. 19 3. 29 Random Number Simulated Demand 0.3 0.5 0.9 Mc Graw Hill < Prev 2 of 5 ASUSarrow_forward
- Best-ride airlines that operates seven days a week has the following time-table. Delhi - Mumbai Mumbai - Delhi Flight No Departure Arrival 1 7.00 8.00 2 8.00 9.00 3 13.00 14.00 4 18.00 19.00 Flight No Departure Arrival 101 8.00 9.00 102 9.00 10.00 103 12.00 13.00 104 17.00 18.00 Crews must have a minimum layover of 5 hours between flights. Obtain the pairing of flights that minimizes layover time away from home. For any given pairing, the crew will be based at the city that results in the smaller layover. For each pair also mention the city where crew should be based.arrow_forwardI need assistance with Homework question Chapter 21 Problem 2. I keep getting the calculations mixed up. Thank you.arrow_forwardTo determine the scope of a bookkeeping clean-up engagement, you are reviewing the Client Overview tab for a potential client. You notice that there is a large amount in the Opening Balance Equity account. Which 3 reasons could be causing this balance?(Select all that apply) A. The client added transactions in the Banking Center without assigning an account to them B. Opening balance for an inventory item was entered during the setup process C. The client entered an Opening Balance when creating an Other Current Asset account D. Opening balances were included when importing customers using the Import data tool E. The client forced a bank reconciliation when the difference was not zeroarrow_forward
- Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,
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