The past few months, this column has been examining Django, a popular open-source Web development framework written in Python. Django sometimes is described as a rival to Ruby on Rails or a Python ...

At 4:40 p.m., Friday, Sept. 12, a Metrolink commuter train collided with an oncoming freight train in Chatsworth, Calif., northwest of Los Angeles. The crash, the Los Angeles Times reported, was “the ...

Value stream management involves people in the organization to examine workflows and other processes to ensure they are deriving the maximum value from their efforts while eliminating waste — of ...