By Edwin J. Beggs (auth.), Cristian S. Calude, José Félix Costa, Nachum Dershowitz, Elisabete Freire, Grzegorz Rozenberg (eds.)

ISBN-10: 3642037445

ISBN-13: 9783642037443

This ebook constitutes the refereed court cases of the eighth foreign convention on Unconventional Computation, UC 2009, held in Ponta Delgada, Portugal, in September 2009.

The 18 revised complete papers provided including eight invited talks, three tutorials and five posters have been rigorously reviewed and chosen from forty submissions. The papers are dedicated to all elements of unconventional computation starting from theoretical and experimental elements to varied purposes. commonplace themes are: normal computing together with quantum; mobile, molecular, neural and evolutionary computing; chaos and dynamical system-based computing; and diverse proposals for computational mechanisms that transcend the Turing model.

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This e-book constitutes the refereed complaints of the eighth overseas convention on Unconventional Computation, UC 2009, held in Ponta Delgada, Portugal, in September 2009. The 18 revised complete papers offered including eight invited talks, three tutorials and five posters have been conscientiously reviewed and chosen from forty submissions.

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Extra info for Unconventional Computation: 8th International Conference, UC 2009, Ponta Delgada, Portugal, September 7-11, 2009. Proceedings

Example text

This is an outstanding result, practically unreachable by means of conventional design methods. Similar results were observed by those doing evolutionary design in FPTA [16], liquid crystals [13] and some other unconventional platforms. 3 Scalability Problems The scalability problem has been identified as the most important problem from the point of view of practical applicability of evolvable hardware. The scalability of representation means that long chromosomes which are usually required to represent complex solutions imply large search spaces that are typically difficult to search.

Simplify the notation by eliminating the use of indices. 18 P. Prusinkiewicz A B c c ci-1 ci ci+1 x x Fig. 2. Continuous (A) and discrete (B) model of diffusion in a filament Let us consider diffusion in a filament as an example of the difference between traditional and L-system-based description of a physical process. Diffusion is often viewed as a spatially and temporally continuous process (Figure 2A), described in one dimension by the partial differential equation ∂c ∂2c = D 2, ∂t ∂x (1) where c is the concentration of the diffusing substance and D is the diffusion constant.

5 Conclusions In this paper, we have surveyed the fundamental principles of evolvable hardware, introduced main problems of the field and mentioned the most successful applications. Proposed theoretical analysis of evolvable hardware which was conducted from the perspective of computer science should help in understanding of what we can obtain from a design method that utilizes the evolutionary design instead of conventional design techniques. Finally, we have shown that adaptive hardware does not reflect the computational scenario of a standard Turing machine.

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Unconventional Computation: 8th International Conference, UC 2009, Ponta Delgada, Portugal, September 7-11, 2009. Proceedings by Edwin J. Beggs (auth.), Cristian S. Calude, José Félix Costa, Nachum Dershowitz, Elisabete Freire, Grzegorz Rozenberg (eds.)


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