Five customers brought in computers to be repaired to a small shop. Estimated repair times (in days) and dates promised are given below. Duedates were set based on available technicians; however, one technician had a medical emergency and will be unavailable for at least two weeks soprocessing times were adjusted.123Customer jobProcessing time(days)Due date (days) 3 54-Select-34-Select-2461055Use the EDD rule and compute the start time, flow time, lateness, and tardiness for each job. Use minus sign to enter negative lateness values, ifany. If your answer is zero, enter "0".7Sequence Start Time, days Flow Time, days Lateness, days Tardiness, days-Select--Select- ✓-Select-

In project management, job sequencing refers to the logical arrangement of project tasks to ensure…

Answered: Use the EDD rule and compute the start…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter4: Linear Programming Models

Section: Chapter Questions

Problem 111P

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Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) The following 5 overhaul jobs are waiting to be processed at Avianic's Engine Repair Inc. These jobs were logged as they arrived. All dates are specified as planning calendar days. Job CR 103 Job Due Date Duration (days) 103 214 10 205 223 7 309 217 11 412 219 5 517 217 15 Assume that all jobs arrived on day 180; today's date is 200.
Machine 1 Machine m Mm Notation: MIP models for scheduling single stage "m" parallel machines Indices k-machine no.,k € (1.m) 1-job,i € (1.n) 1-job,j e (1. n} Input parameters m= total number of machines n= number of jobs Pprocessing time of job" d,- due date of job " M-large number Decision variables TO_startup time of job " Yu hinary variable, 1:1f job"C precedes job"f in the processing sequence,0: otherwise Wa- himary variable, 1:if job "Tis processed on machine "k",0 otherwise k machine no.,k € {1 - m} 1- Job,Ie (1. . m) 1-Job./E (1.n) M-total number of machines nnumber of Jobs A-processing time of fob "f d- due date of fob " M- large mumber Decision varlables xstartup time of job Yu= binary variable, 1:4f job precedes job " in the processing sequence,0: otherwise W-binary variable, 1:1f fob "C is processed on machine "k", 0: otherwtse
OVERBOOKED: FRONT OFFICE PERSPECTIVE Overbooking is an accepted hotel and airline practice. Many questionthe practice from various standpoints, including ethical and moral.Industry executives, however, argue that there is nothing moreperishable than a vacant room. If it is not used, there is no chance toregain lost revenue. Hotels need to protect themselves becausepotential guests frequently make reservations at more than one hotelor are delayed and, therefore, do not show up. The percentage of no-shows varies by hotel and location but is often around five percent. In a 400-room hotel, that is 20 rooms, or an average loss ofapproximately $2,600 per night. Considering these figures, it is notsurprising that hotels try to protect themselves by overbooking.Hotels look carefully at bookings: Whom they are for, what rates theyare paying, when they were made, whether they are for regular guestsor from a major account (a corporation that uses the hotel frequently),and so on. Jill Reynolds,…
XOX Corporation's management keeps track of the time it takes to process orders. During the most recent month, the following average times were recorded per order Wait time 15.6 Inspection time 0.8 Process time 1.6 Move time 0.7 Queue time 3.9 Compute the delivery cycle time in days. Percentage of manufacturing cycle time spent on non-value-added activities.
Compressed work - weeks are schedules with fewer than the traditional five workdays a week Question 5 options: True False
Johnson Fastener and Tool had a six-hour work stoppage yesterday, which means the company does not have its usual number of fasteners stored in inventory. Concerned that the inability to fulfill all current orders may have an adverse effect on some customers, Acme's account executives are notifying all customers, including Henderson Air, that there could potentially be a small delay in delivering some orders. This is an example of:
Order 1 2 3 4 5 Time Since Order Arrived (hours ago) 3 1 0 6 5 You answered Sequence Order The due dates reflect the need for the order to be at its next operation. Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average past due hours. Using the FCFS (first come, first served) decision rule for sequencing the orders, the order is Sequence Order Estimated Machine Time (hours) 15 9 7 10 3 1 5 Rule EDO FCFS 4 4 Using the EDD (earliest due date) decision rule for sequencing the orders, the order is (to resolve a tie, use order in which the orders were received) ¹2 1 4 2 3 Due Date (hours from now) 5 5 3 18 20 21 12 The average flow time and average past due hours for each option (enter your responses are real numbers rounded to two decimal place Average Flow Time Average Past Due Hours
Paperback Press specializes in reprinting classic literature. Three years ago, the company implemented a new system to track inventory and signal when books need to be reprinted. The new system was well received by users, and inventory problems have decreased significantly. Since the inventory system became operational, however, users have requested increased functionality and changes in screen forms and reports. You have been called in as a consultant to help the company make some decisions about system maintenance. Tasks Should Paperback Press have a specific process to manage future changes and enhancements? What should it be? If new features are added, what methodology should the IT staff use to add functions and enhancements? Suppose that you had to assign specific IT staff members to maintain the inventory control system. How would you organize the maintenance team to accomplish the task? What should Paperback Press watch for to detect possible obsolescence in the future?…
Kingcade Corporation keeps careful track of the time required to fill orders. Data concerning a particular order appear below: Wait time Process time Inspection time Move time Queue time The throughput time was: Multiple Choice 33.1 hours 4.7 hours 28.4 hours 14.3 hours Hours 18.8 1.6 0.6 2.5 9.6
11 Remaining Time: 11 minutes, 32 seconds. 12 v Question Completion Status: Moving to another question will save this response. Question 6 Supply chain view suggests that planning starts with the needs of the target customer. O True O False A Moving to another question will save this response.
The journal entry process requires the review, approval and input of a company's business transactions in the General Ledger. In one firm, transactions arrive to be entered in the Ledger at an average rate of 10 hour. The following table provides information about the process. Only one person is needed to perform each step. Process Step Review Approve Input Avg. Time to Perform Step (per entry) 3 min 5 min. 0.5 min a. i) Find the capacity of the process and identify the bottleneck step. ii) Find the raw process time. iii) Find the throughput of the process. b. On average, there are 8 transactions in process." How long, on average, does a transaction spend in the system? Number of Personnel Available 2 2 1 c. Up to now, two full-time managers have been responsible for approving entries. The firm is experimenting with a computerized approval process. The computer program runs in batch mode at the beginning of each 8-hour day, and is completed almost instantly. Transactions continue to…
Total customer-response time (CRT) can be defined as which of the following? (Hint: Refer to textExhibit 14.14 and the accompanying discussion.)a. The difference between when a customer’s order is set up and when the order is finishedb. The elapsed time between when a customer places an order for a product and when that order isdelivered to the customerc. Manufacturing lead (cycle) time for the orderd. The time between when an order is received by manufacturing and when that order is completed

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