Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Time Lag Effects - Operations Function
Feedback control in complex systems can bring its own problems, due to time lag between measuring the output deviation and realising the effects of the corrective adjustments. A well-known illustration of this phenomenon was presented by Jay W Forrester in his book, Industrial Dynamics. He had been consulted by a white goods manufacturing concern which had been experiencing wildly fluctuating production levels over a period of years; despite the best efforts of the company's management they had been unable to keep production output in reasonable balance with customer demand. Forrester and his team studied the operations of the company's distribution chain (shown in simplified form in the figure) and formulated a computer simulation model of the factory - warehouse - distributor - retailers.
The figure below (adapted from Forrester, 1965) shows the results obtained when a 10 per cent step-increase in demand at the retail outlets was introduced. This chart is necessarily 'cluttered', to show how the various order, inventory and production levels changed in response to the initial increase in sales.
For our purposes it will be sufficient if you locate the two lines labeled 'Retail sales' and 'Factory production output'. It was found that, because of a series of time-lags in the chain, the feedback signal was greatly amplified by the time it reached the factory, resulting in over-reaction. Note that the production level climbs by 45 per cent, creating an excessive build up of inventories. In response the production level falls to 3 per cent less than the original level, and so on. It takes about 18 months for the fluctuations to be damped out.
Master Production Scheduling The master schedule ( or master production schedule of MPS) sets the quantity of each end item (finished product) to be completed in each time peri
CanGo is looking at ways to grow its business. How should they approach the decision on how to do it?
The Hilllcrest Golf and Country Club manager selected a random sample of the members and recorded the number of rounds of golf they played last season. The reason for his interest
All of the following are negative about telecommunication except/1. Technical difficult with computer linkage/2.islotion from co-worker/3.decrease identification with work team/4.m
According to the experts, the 2020 organizations will possess one of the following characteristics: a. Heavily analytical approaches to problem-solving b. Increased rigidity in org
The consensus is hiring friends may not work well. Let's talk about partnerships. What are the advantages and disadvantages of a partnership with a friend?
Analyze the benefits of Supplementary Unemployment Benefit Plans, and list potential scenarios when they become quite vulnerable. Address service requirements, duration, benefit fo
Six samples of subgroup size 5 (n=5) were collected. Determine the upper control limit (UCL) for an X-Bar chart if the mean of the sample averages is 4.7 and the mean of the samp
Westside Printing Limited was incorporated on 1 July 200A to take over the existing business of Bob's Printing. Net assets (other than cash) were taken over at fair value. The tota
What is the importance of consumer segmentation?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd