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.
The owner of Firewood To Go is considering buying a hydraulic wood splitter which sells for $50,000. He figures it will cost an additional $100 per cord to purchase and split wood
Weekly sales of 10-grain bread at the local organic food market are in the table below. Based on this data, forecast Week 9 using a five-week moving average. Week Sales 1
Q1. What are some examples of a negotiation script for a job Q2. Lori Cook produces "Final Exam Care Packages" for resale by her sorority. She is currently working a total of 5
Routing Procedure For a new product or part the routing procedure consists of seven principle steps: 1.The first step is to analyze the product or articles and fabricate int
On February 1, Mary verbally agrees to work as a businessperson on a temporary basis for the firm of Blacke & Blewe, P.C. The job that Mary is assigned to do will take eight months
1. An element of work has been measured 6 times, with the following results (units of 0.01 minutes): 18, 20, 19, 21, 19, 22. What should be the full-study sample size? Answer:
What are the procedural steps necessary to sue a person or company for business law dispute? Discuss and illustrate what both the plaintiff and defendant must do.
Need information on this; did not receive my textbook as of yet European Explorations Debate the pros and cons of the early European explorations of the Americas. Should thes
Commercial and personal Websites, as well as print media, design their formats and include visuals for optimal audience appeal. Select a Website or print medium for this reflective
The I-10 carpet outlet wants to develop a means to forecast its sales. The store manager believes that the stores sales are directly related to the number of new housing starts in
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