Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) The following jobs are waiting to be processed at Jeremy LaMontagne's machine center. Today is day 245. Job Date Job Received Due Date Duration (days) 1 215 300 30 2 230 310 25 3 228 290 35 4 235 305 40 5 245 315 45

Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) The following jobs are waiting to be processed at Jeremy LaMontagne's machine center. Today is day 245. Job Date Job Received Due Date Duration (days) 1 215 300 30 2 230 310 25 3 228 290 35 4 235 305 40 5 245 315 45

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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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.
Ann Elkin, who works for Brill Co. has been sent out to conduct two customer evaluations, which have gone much more quickly than Ann anticipated. Her supervisor does not expect Ann back until alter lunch. It Is now 10:30 A.M., and Ann would like to run some personal errands and then go to lunch before returningto work at 1:00P.M. Should Ann take the time? Would you? Why or why not? Is this any different than if Ann was sitting at her office desk using a work computer to access her personal email, surf the internet, check social media or make personal phone calls on her work phone?
At the University Hospital, five blood samples must bescheduled through a blood-testing laboratory. Eachsample goes through up to four different testing stations.The times for each test and the due dates for eachsample are as follows:Sample Test Station/Hours Due Date (hours)1 A/1, B/2, C/3, D/1 62 B/2, C/3, A/1, D/4 103 C/2, A/3, D/1, C/2 84 A/2, D/2, C/3, B/1 145 D/2, C/1, A/2, B/4 12a. Using a Gantt chart, schedule these five samples in priority order of earliest due date first.b. Assume that the capacity of each test station (A, B, C and D) is doubled. Prepare an FCS for this situation.c. What are the bottleneck work centers in part a of the problem. Suggest capacity additions that might be needed.
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
Currently a company that designs Web sites has six customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. Job Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) A 6 18 48 B 4 22 52 C 1 30 70 D 10 14 28 E 7 12 56 F 5 20 62 Develop a schedule by using the first-come, first-served (FCFS) rule and calculate the average flow time and average days past due for the schedule. Develop a schedule by using the earliest due date (EDD) rule and calculate the average flow time and average days past due for the schedule. Comment on the performance of the FCFS and EDD rules relative to average flow time and average days past due.
b) A company receives parts from suppliers to be used in its manufacturing departments. The quality control department must perform two operations when shipments are received: Operation A – draw a random sample, package, and deliver to testing; and Operation B – test the materials and issue a disposition report. There are currently six shipments waiting to be processed. The time estimates for processing these six shipments through quality control are given in the table below. Shipment Operation A (hours) Operation B (hours) A 1.5 1.0 В 1.1 2.7 1.2 1.4 D 0.7 1.6 E 1.6 1.5 F 1.9 2.9 Use Johnson's Rule to set the sequence of processing the shipments through Quality Control. i. ii. How much total time is required to process all the six shipments through Quality Control? Show all times on a Gantt Chart. w lu
A. Arrange the sequence of the given procedure in processing CRS by writing numbers 1-6 on the lines. mod of Confirm to the guest the method of payment. Access the guest history system. KOLEHIYO Give the confirmation number generated on the system to the caller. Thank the guest. Enter the reservation information in the system. Check the room availability. PU CIT
A company receives parts from suppliers to be used in its manufacturing departments. The quality control department must perform two operation when shipments are received:i) Operation A-draw a random sample, package, and deliver to testing, andii) Operation B-test the materials and issue a disposition reportThere are currently six shipments waiting to be processed. The time estimates for processing these six shipments through quality control are:Shipment Operation A (hours) Operation B (hours)1 1.5 1.02 1.1 2.73 1.2 1.44 0.7…
How does seasonal variability in demand affect the l ow and waiting time through a process? How might a company respond to reduce the effect of this variability?
state whether or not each situation would be considered “compensable time” (and why or why not). An employee of a fast food chain has to arrive at work 15 minutes early to change into the“mascot” costume and it typically takes another 15 minutes at the end of the shift to change outof the costume and properly store it. Due to the cost of the costume, employees are notallowed to take the costume home. The “mascots” typically work from 10am – 2pm, to coverthe lunch rush periods. How much time would be “compensable” for the mascots, assumingthe conditions/schedule listed above?2) George is a Radiology Technician at a local hospital and when on call, is required to be nofurther than 30 minutes away from the facility. Is the “on call” time, compensable?
Human Resource Department (HRD) in a university was planning to monitor staffs courses and training information in the Human Resource Information System (HRIS). A report is required to be generated from the HRIS to display information on the numbers of days of training programs attended by all staffs. Corresponding changes will need to be done to HRIS to cater this new request. Mr. Adam from HRD is requested by the Application Unit in Computer Centre (CC) to fill in a Change Request Form (CRF). The Application Unit is responsible in the development and maintenance of university's main application systems. a. Give reason on the use of Change Request Form (CRF). b. Identify THREE (3) information recorded in CRF. c. Briefly explain the steps to be taken in managing changes to the application system.
What are the advantages and disadvantages of the shortest processing time (SPT) rule?