The site http://www.belgianrail.be/en/ provides railway information as well as the time tables for buses and trams. The main train station of Ghent is called Gent Sint-Pieters (sites in English sometimes use the French translation Gand Saint-Pierre).
To check the bus schedule, please visit https://www.delijn.be/en/. All buses to Technologiepark pass by the railway station Gent Sint-Pieters. The bus stop in front of the campus is named Bollebergen and is located at Grotesteenweg-Noord, Zwijnaarde. You can take bus 70, 71 or 72 on platform 6 of the Gent Sint-Pieters bus terminal (located next to the railway station).