The University of Massachusetts, Amherst and Northeastern University have announced their commencement speakers for this spring. Governor Deval Patrick will deliver the main commencement speech at the UMass Amherst ceremonyMay 9, the university announced Wednesday. Patrick helped pass a higher education bond bill in 2008 that earmarked $450 million for two new research facilities and a new academic building at the state’s flagship university. Northeastern officials announced that Janet Napolitano, the former US secretary of homeland security and current president at the University of California, will be the speaker at its commencement May 2.Catalina Gaitan can be reached at firstname.lastname@example.org. Follow her on Twitter at @catalina_gaitan.