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P.S. Quote for the month: An homage to aerospace pioneer and moon-walker John Young, who passed away on January 5. (Page down to the end of this e-zine to enjoy the actual quote.) 1: Software alert: macOS Version 11 of Design-Expert® software released Now Mac users get all the same advantages of those on Windows and on Apple OS to boot—no need to run an emulator. Design-Expert version 11.1 (DX11) for Mac or Windows offers an amazing array of interface enhancements, for example, multigraph views—plus many refinements to its powerful statistical tools. It arrived with rave reviews from the expert evaluators for the:
P.S. to current DX11 users (non-Mac): We advise you update to Windows version 11.1 via Help from within your installed program. View the Read Me file for details on the changes—mainly maintenance items. If you want to receive notice when an update becomes available, go to Edit on the main menu of your program, select Preferences and, within the default General tab, turn on (if not already on by default) the “Check for updates on program start” option. (This alert feature is not available in network versions.) 2: Address alert: We’ve moved!
We’ve moved approximately 1 mile up to Broadway Place West. We have a lovely suite on the top floor (foreground of photo), just off Hwy 36 and Industrial Blvd, east of downtown. Our new postal address is: Make note of our new address and feel free to stop by and visit sometime!
Question from a Developmental Chemist: “I ran a six-component, simplex-screening mixture-design with the aid of Design-Expert. Unfortunately, one sample is not useable, thus the response went missing. I’m not particularly interested in this particular blend, but I worry that it will disrupt the analysis. Your thoughts?” Answer: It depends (the standard reply to all statistical questions!). If you went with the default choice of 23 blends that included axial check blends and constraint plane centroids plus additional centroids, then the impact of a missing result becomes minimal (if a centroid) or greatly reduced. However, if you unchecked all the optional points, you will then find the loss of this blend more debilitating. In either case, you can assess the damage via the Evaluation tool within Design-Expert.
In my new mini-Tip posted to the Stat-Ease YouTube Channel here, I demonstrate how Design-Expert provides special treatment for center points in factorials. If you have about a minute to spare, check this out!
The May issue of Chemical Engineering World features an inspiring case for the ability of mixture DOE to quickly match a competitive chemical product. Follow the link above to page 24 for the whole story told by the formulator himself.
In this beginner-level ‘demo-nar’ (demonstration webinar) of Design-Expert, I will feature factorials—the core tool for DOE, followed by a peek at response surface methods (RSM). Via several inspiring case studies, see how you can quickly converge on the ‘sweet spot’—the most desirable combination of process parameters and product attributes.
Register now for the date and time that works best for you via this GotoWebinar link. After registering, you will receive a confirmation e-mail containing information about joining the webinar.
Consultant Pat Whitcomb will detail “Building Designs for Irregularly Shaped DoE Spaces” at the ENBIS conference in Nancy, France on September 2–6. He will also provide tips on “Using Split-Plot Diagnostics to Reveal Hidden Information”at the software session. If you attend, please look Pat up at the Stat-Ease exhibit.
You can do no better for quickly advancing your DOE skills than attending a Stat-Ease workshop. In these computer-intensive classes, our expert instructors provide you with a lively and extremely informative series of lectures interspersed by valuable hands-on exercises with one-on-one coaching. Enroll at least 6 weeks prior to the date so your place can be assured—plus get a 10% “early-bird” discount.
See this web page for complete schedule and site information on all Stat-Ease workshops open to the public. To enroll, scroll down to the workshop of your choice and click on it, or e-mail our Client Specialist Rachel Pollack at [email protected]. If spots remain available, bring along several colleagues and take advantage of quantity discounts in tuition. Or, consider bringing in an expert from Stat-Ease to teach a private class at your site.*
Please do not send me requests to subscribe or unsubscribe—follow the instructions at the end of this message. Sincerely, Mark Mark J. Anderson, PE, CQE P.S. Quote for the month: The first “Curator of Experiments” endorses empirical study, that is, let the data speak.
—Robert Hooke, chosen by the newly formed Royal Society (motto Nullias in Verba—“Take nobody’s word for it; see for yourself.”) in 1662 to be their first Curator of Experiments. Trademarks: Stat-Ease, Design-Ease, Design-Expert and Statistics Made Easy are registered trademarks of Stat-Ease, Inc. Acknowledgments to contributors: For breaking news from Stat-Ease go to our Twitter feed. DOE FAQ Alert ©2018 Stat-Ease, Inc. |
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