Course material for Complex Systems 530 – Computer Modeling for Complex Systems

  This term, I'm teaching Complex Systems 530 - Computer Modeling for Complex Systems at the University of Michigan Center for the Study of Complex Systems.  In the spirit of open science, all course material will be available online at Github.  You can browse the repository here: https://github.com/mjbommar/cscs-530-w2015.   In the course, we're exploring why and

By |2015-01-27T17:07:11-05:00January 27th, 2015|Consulting, Machine Learning, Programming, Training|1 Comment

Visual Summary of #jan25 Twitter Activity

  Last year, I covered a number of the so-called "Twitter protests" in China (#cn220), Iran (#25bahman), and Algeria (#fev12).  Since these protests began in January 2011, the Arab Spring has claimed many members of both ruling and revolting groups - Mubarak in Egypt, Gaddafi in Libya, Ben Ali in Tunisia, Saleh in Yemen, and

By |2012-01-29T07:54:12-05:00January 29th, 2012|Research, Society|4 Comments

Debugging ORA-02292: integrity constraint (OWNER.CONSTRAINT) violated – child record found

  Did you find this post useful?  Does your organization need Oracle services?  We can help.   Working with Oracle databases can be daunting to developers and analysts who lack a deep understanding of relational models and SQL.  One excellent example of a mystifying pitfall is the dreaded ORA-02292: integrity constraint error.  This error often

By |2012-01-22T11:45:23-05:00January 22nd, 2012|Consulting, Infrastructure, Programming|4 Comments

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