Hotel developer and startup investor Ravi Patel will join entrepreneur John Pappajohn at 5 p.m. Thursday for the launch of the Venture School at the John Pappajohn Entrepreneurial Center in downtown Des Moines. The event is intended to showcase the program administered by the University of Iowa. Patel is president of Hawkeye Hotels, which recently held the grand opening for the first two hotels built in downtown Des Moines since the 1990s. He also is the co-founder of Built By Iowa LLC, a startup private equity fund.