Content by Harish Jose
Thu, 01/16/2020 - 12:02
In today’s column, I’m looking at Weber’s Law. It’s named after Ernst Heinrich Weber (born June 24, 1795, died Jan. 26, 1878), a German physician who was one of the pioneers of experimental psychology. I highly recommend the Numberphile YouTube…
Mon, 11/18/2019 - 12:03
It has been a while since I have written about statistics, and I get asked a lot about a way to calculate sample sizes based on reliability and confidence levels. So today I am sharing a spreadsheet that generates an operating characteristic (OC)…
Mon, 10/28/2019 - 12:02
Today I’m looking at design from a cybernetics viewpoint. My inspirations come from cybernetics and design theorists Ross Ashby, Stafford Beer, Klaus Krippendorff, Paul Pangaro, and Ranulph Glanville. I was curious about how the interface of a…
Wed, 09/25/2019 - 12:03
One of my favorite equations from Factory Physics, by Wallace Hopp and Mark Spearman (Waveland Press, third edition, 2011) is Kingman’s formula, usually represented as “VUT.”
The VUT equation is named after Sir John Kingman, a British mathematician…
Wed, 08/14/2019 - 12:03
After reviewing Mark Graban’s wonderful book, Measures of Success (Constancy, 2018), I started rereading Walter Shewhart’s books, Statistical Method From the Viewpoint of Quality Control (Dover reprint 1986, originally edited by W. Edwards. Deming…
Tue, 06/18/2019 - 12:02
I must confess up front that the title of this column is misleading. Similar to the Spoon Boy in the movie, The Matrix, I will say, “There is no lean problem or a Six Sigma problem. All these problems are our mental constructs of a perceived…
Wed, 05/01/2019 - 12:03
Today I’m looking at Factory Physics and the Toyota Production System (TPS). My main references for the post are the 1977 paper co-authored by ex-Toyota president Fujio Cho and key ideas from Factory Physics (Waveland Press, 2011).
One of my…
Thu, 03/21/2019 - 12:03
Today I’m looking at the profound phrase of Canadian philosopher and a media theorist Marshall McLuhan, “The medium is the message.”
McLuhan noted that: “Each medium, independent of the content it mediates, has its own intrinsic effects, which are…
Tue, 02/05/2019 - 12:03
The TV show The Walking Dead, about survival in a post-apocalyptic zombie world, is one of the top-rated currently. I’ve written previously about the show, but today I want to briefly look at the complex adaptive systems (CAS) in the show’s plot…
Thu, 01/03/2019 - 12:03
One of my favorite things to do when I learn new and interesting information is to apply it to a different area to see if I can gain further insight. Here, I am looking at the principle, “Chekhov’s gun,” named after the famous Russian author, Anton…