Showing posts with label Professor George Dantzig. Show all posts
Showing posts with label Professor George Dantzig. Show all posts

Thursday, August 20, 2009

Mathematical Programming Symposium in Chicago and Reflections


We are getting ready for the International Symposium on Mathematical Programming, which will be taking place in Chicago, August 23-28, 2009. This Symposium marks the 60th anniversary of the 0-th such symposium, which also took place in Chicago. The conference is held every three years.

I have organized an invited session on Game Theory and Variational Inequalities, which includes papers on dynamic modeling of the Internet, supply chain network disruptions and vulnerability analysis with performance assessment, mergers and acquisitions among oligopolistic firms and the merger paradox, and the modeling and solution of electric power supply chains with applications to New England. The presenters in this session are: Professor Patrick Qiang, Professor Zugang "Leo" Liu, and yours truly. I have posted the presentations on the Virtual Center for Supernetworks website.

This will be a very special conference for me. I recall my first Math Programming Symposium when I was a fairly fresh PhD and the conference was at MIT in Cambridge, MA. My dissertation advisor, Dr. Stella Dafermos of Brown University, had recommended that I attend this conference and I recall fondly my excitement about presenting a single-authored paper on computational comparisons of spatial price equilibrium problems (which later was published in the Journal of Regional Science). I have always loved working at the interfaces of operations research / management science and economics. Lo and behold, a few minutes into my presentation, who comes running into the room, but none other than Professor George Dantzig of Stanford University, who is considered the founder of "operations research." He apologized for being late, I caught my breath, and proceeded with my talk. Afterwards, Professor Dantzig came up to me and told me that he had been working on such problems and he thought that my approach was great. Needless to say, his support and special thoughtfulness and kindness I have carried forward with me from that moment on!

Above I include photos of Professor Dantzig with me taken a few years back and also a photo of Professor Stella Dafermos, two giants of operations research (although height-wise they were certainly not "tall"). You can read more about Professor Dantzig, who lived to the age of 90, here.

I am delighted that two of my recent PhD students, Dr. Qiang and Dr. Liu, will be with me at this Math Programming Symposium and will be presenting papers. How wonderful to have history repeating itself!

Thursday, May 7, 2009

The Fragile Networks Book Cover (and Finding Happiness According to the Kingdom of Bhutan with Reminiscences about Professor George Dantzig)


Patrick Qiang and I are delighted that Wiley has now provided us with the cover of our book which I am sharing with you. The cover should be posted on online marketing websites in a week or so, we have been told. After canvasing colleagues, students, staff, and neighbors, we provided Wiley with feedback on earlier three options and Wiley's graphic design team came up with the final cover design above. I think that the images provide good visuals for some of the themes which are explored in the book and some of the applications, which range from congested transportation networks and supply chains to financial networks and the Internet plus electric power generation and distribution networks.

Completing this book has been a time-consuming but wonderful experience! The next step is the send-off to the printers, which we are hearing should be happening this week, with copies of the book being made available sometime in mid-June.

Completing the writing of a book generates some satisfaction and, dare one even say, happiness?! Well, the kingdon of Bhutan, a mountanous country in Asia, has developed a gross national happiness index. The New York Times had a feature article on the index today and it reminds me of a conversation that I had with Professor George Dantzig, one of the founders of the field of operations research, before he passed away at the age of 90. Professor Dantzig was a giant in terms of his scholarship and kindness. He made a mark on so many students, academics, and practitioners, through his work, publications, and warm personality. He is missed tremendously. Professor Dantzig told me that he had been working on, among other projects, constructing appropriate utility functions for the United States. Here is an interview with Professor Dantzig by Peter Horner and the article includes a photo of Professor Dantzig hugging me.

Lo and behold, in a sense, the government of Bhutan has constructed utility functions, with weights for different criteria, to enable the measurement of "gross national happiness." It is worth spending some time on the website above, which even discusses the length of time to achieve of PhD and the impact on happiness! The article in the NYTimes was most refreshing and fun to read. The government of Bhutan even "gets it" that time spent on activities such as work and sleep matters as does time spent in cultural and social pursuits.