by Don Johnston | Apr 23, 2016 | Announcements
Mathematical expressions are not displayed in this blog at present. The problem is that the plugin used for displaying them is not compatible with the latest version of WordPress. I am currently looking for a solution to that problem. I won’t be publishing any...
by Don Johnston | Mar 7, 2016 | Data Accuracy
Introduction Achieving good inventory management requires reliable accurate up to date data. If there are problems with data accuracy, check to see that your inventory system (or ERP system) is being used as it is designed to be used. If you try to shortcut data entry...
by Don Johnston | Feb 20, 2016 | Lead Time Reduction, Replenishment
Introduction The lead time for an item starts when the item should be ordered, not when the order is sent to the supplier. To find out the effect on the required investment in inventory of that time difference, see the table in the article entitled “Reducing Lead...
by Don Johnston | Jan 23, 2016 | Forecasting
Introduction If there is no evidence of trend or seasonal effects then forecasting using demand history alone usually simply involves estimation of the demand rate (mean demand per unit time). All of the algorithms mentioned in this article can be used as a basis for...
by Don Johnston | Dec 20, 2015 | Replenishment
Introduction Claims that particular software packages provide optimal inventory management are commonplace. Such claims, by themselves, are meaningless. They only become meaningful if there is a full description of the theoretical assumptions involved and of the...
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