Well, I can remember being in Cinema 180, where you stand up and watch the film being projected onto one 'side' of the dome, and I presume the image was sort of projected 180 degrees around from the lens which was on the opposite side of the dome.
The Cinema 360 had the projector in the middle of the dome and projected straight up onto the roof of the dome and almost cover the whole of the dome. This is why you had to lie down as you'd get a bad neck looking up at the ceiling !
I enjoyed the 180 more, as you found yourself rocking from side to side and almost falling over as the image of the rollercoaster was flying around the track.
I've done a search in google on CINE 360 and it does turn up alot of stuff, so if you can be bothered to trawl through it you might be able to find something.
Incidentely, it said the 360 at Alton Tower has now been replaced by a 3D cinema. I suppose they are sort of old fashioned now compared to the new technology. I also found this - not the same as the 360 we are talking about - but it looks interesting :
http://www.arromanches360.com/htm/index.htm