12,812 research outputs found
On parallel Turing machines with multi-head control units
This paper deals with parallel Turing machines with multi-head
control units on one or more tapes which can be considered as a
generalization of cellular automata. We discuss the problem of
finding an appropriate measure of space complexity. A definition is
suggested which implies that the model is in the first machine
class. It is shown that without loss of generality it suffices to
consider only parallel Turing machines of certain normal forms
Experimental verification of parallel processing on a hybrid optical parallel array logic system
This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/AO.29.002510 Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law
A Survey on Continuous Time Computations
We provide an overview of theories of continuous time computation. These
theories allow us to understand both the hardness of questions related to
continuous time dynamical systems and the computational power of continuous
time analog models. We survey the existing models, summarizing results, and
point to relevant references in the literature
- …