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 table details the task required for an industry to manufacture a fully portable vacuum cleaner. The times are in minutes. Demand forecasted a need to manufacture in a cycle of
The hunt is on: Rich's 13 year old daughter Alexandra is going to give him an introductory trombone concert later in the day, and he wants to purchase earplugs before then. Three s
Production and management Brunswick, read an article on time-phased requirements planning. He was curious about how this technique might work in scheduling Brunswick's engine assem
Porter's Five Forces Model and the implications of the Competitive advantage of Nations' research on this model
Advantages and Disadvantages of ERP Systems Advantages May provide strategic advantage Integrates the supply chain May provide reduced costs Off the shelf co
Describe the impact of the solicitation process and how it determines the preparation of your bid.
Name three factors that a router must consider when determining the best path for data between two points on a network?
Your company wants to increase revenues from its existing customers. How can data mining be used to accomplish his objective?
Do you think global businesses would be willing to subscribe to a global code of conduct?
impressive portfolio includes some of the strongest brand names in the world. Additionally, P&G must study its consumers, use long-term perspectives, employ product innovation and
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