Observe the difference from the general WW and DDLS models, even in the ordering situation where [d.
From (4) in the DDLS model, we obtain the following total costs:
The ZIP policy is always optimal to the DDLS, if one of the following is true:
The non-ZIP (NZIP) policy is optimal to the DDLS, if [H.
Therefore, unlike the Wagner-Whitin DLS model, the ZIP policy is not always optimal to the DDLS.
In the summer of 2007, DDLS conducted an extensive global search for an established training company with a history of success and a learning philosophy that would mesh well with its own.
Our focus continues to be on skills acquisition and retention through best practice training," stated Trang Dao, Marketing Manager, DDLS, "and Systemation's practical, experiential approach caters perfectly to these goals.
Systemation began training DDLS trainers in November 2007, which will equip DDLS to provide the following Systemation courses to the public beginning February 1st 2008:
Over time, DDLS will offer Systemation's complete line of business analysis and project management training programs as part of its overall goal to help local enterprises get the most out of their IT investments.
DDLS has over 18 years of industry experience in the delivery of training that enables clients to implement and deliver technology-focused business solutions.