Results 11 to 20 of about 2,960,567 (255)

Pushdown Automata and Context-Free Grammars in Bisimulation Semantics [PDF]

open access: yesLogical Methods in Computer Science, 2023
The Turing machine models an old-fashioned computer, that does not interact with the user or with other computers, and only does batch processing. Therefore, we came up with a Reactive Turing Machine that does not have these shortcomings. In the Reactive
Jos C. M. Baeten   +2 more
doaj   +1 more source

Automatic Student Engagement in Online Learning Environment Based on Neural Turing Machine

open access: yes, 2021
With the continuous and rapid growth of online courses, online learners’ engagement recognition has become a novel research topic in the field of computer vision and pattern recognition.
Ma Xiaoyang, Min Xu, Dong Yao, S. Zhong
semanticscholar   +1 more source

A Formalization and Proof of the Extended Church-Turing Thesis -Extended Abstract- [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2012
We prove the Extended Church-Turing Thesis: Every effective algorithm can be efficiently simulated by a Turing machine. This is accomplished by emulating an effective algorithm via an abstract state machine, and simulating such an abstract state machine ...
Nachum Dershowitz, Evgenia Falkovich
doaj   +1 more source

Reactive Turing machines [PDF]

open access: yesInformation and Computation, 2011
We propose reactive Turing machines (RTMs), extending classical Turing machines with a process-theoretical notion of interaction, and use it to define a notion of executable transition system. We show that every computable transition system with a bounded branching degree is simulated modulo divergence-preserving branching bisimilarity by an RTM, and ...
Baeten, J.C.M.   +2 more
openaire   +10 more sources

Some undecidable problems about the trace-subshift associated to a Turing machine [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
We consider three problems related to dynamics of one-tape Turing machines: Existence of blocking configurations, surjectivity in the trace, and entropy positiveness. In order to address them, a reversible two-counter machine is simulated by a reversible
Anahí Gajardo   +2 more
doaj   +1 more source

How Hard Is It to Detect Surveillance? A Formal Study of Panopticons and Their Detectability Problem

open access: yesCryptography, 2022
The Panopticon (which means “watcher of everything”) is a well-known prison structure of continuous surveillance and discipline studied by Bentham in 1785. Today, where persistent, massive scale, surveillance is immensely facilitated by new technologies,
Vasiliki Liagkou   +3 more
doaj   +1 more source

The $\pi$-Calculus is Behaviourally Complete and Orbit-Finitely Executable [PDF]

open access: yesLogical Methods in Computer Science, 2021
Reactive Turing machines extend classical Turing machines with a facility to model observable interactive behaviour. We call a behaviour (finitely) executable if, and only if, it is equivalent to the behaviour of a (finite) reactive Turing machine.
Bas Luttik, Fei Yang
doaj   +1 more source

The non-cooperative tile assembly model is not intrinsically universal or capable of bounded Turing machine simulation [PDF]

open access: yesSymposium on the Theory of Computing, 2017
The field of algorithmic self-assembly is concerned with the computational and expressive power of nanoscale self-assembling molecular systems. In the well-studied cooperative, or temperature 2, abstract tile assembly model it is known that there is a ...
Pierre-Etienne Meunier, D. Woods
semanticscholar   +1 more source

Quaternionic quantum Turing machines

open access: yesFrontiers in Physics, 2023
Quaternionic quantum theory is an extension of the standard complex quantum theory. Inspired by this, we study the quaternionic quantum computation using quaternions.
Songsong Dai
doaj   +1 more source

Molecular system for an exponentially fast growing programmable synthetic polymer

open access: yesScientific Reports, 2023
In this paper, we demonstrate a molecular system for the first active self-assembly linear DNA polymer that exhibits programmable molecular exponential growth in real time, also the first to implement “internal” parallel insertion that does not rely on ...
Nadine Dabby, Alan Barr, Ho-Lin Chen
doaj   +1 more source

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