Wittgenstein, Ludwig (2) Stevens, Robert ( (1) Vekeman, Christophe (1) Littmann, Mark (school Of Journalism & Electronic Media, Espenak, Fred (nasa/goddard Space Flight Center (1) Dix, Alan (professor And Director And Director, Gill, Steve (professor And Deputy Director Of Research & Graduate Studies, Ramduny-ellis, Devina (director Of Education And Head Of Computer Science, Hare, Jo (senior Lecturer (1)