- Full text PDF available (28)
- This year (0)
- Last five years (7)
T he a d vantages of a n archite ct ure opt imized for cellular a utomata (CA) sim ula tions a re so great that , for large-scale CA experiments , it becomes a bsurd to use any ot her kind of com put er .
We show that a rotation in three dimensions can be achieved by a composition of three shears, the rst and third along a speciied axis and the second along another given axis orthogonal to the rst; this process is invertible. The resulting rotation algorithm is practical for the processing of ne-grained digital images, and is well adapted to the access… (More)
Today, a " computer " , without further qualifications, denotes a rather well-specified kind of object; we'll consider a computer " non-conventional " if its physical substrate or its organization significantly depart from this de facto norm. Thus, the thousands of literate Greeks that ended up in Rome as secretaries and accountants after the " liberation "… (More)
Conservative logic is a comprehensive model of computation which explicitly reflects a number of fundamental principles of physics, such as the reversibility of the dynamical laws and the conservation of certain additive quantities (among which energy plays a distinguished role). Because it more closely mirrors physics than traditional models of… (More)