LA JOLLA, Calif.--(BUSINESS WIRE)--For the second time in its 50-year history, the Salk Institute will award its Research Excellence and Public Service Medals. Gene expression pioneer Robert G. Roeder of The Rockefeller University will be awarded the Salk Institute Medal for Research Excellence. Irwin M. Jacobs, the renowned engineer, entrepreneur and philanthropist, will be awarded the Salk Institute Medal for Public Service.