Contextual iso-triangular array P system and iso-triangular picture languages

Spiking Neural P Systems (SN P Systems) is a bio-inspired computing model, abstracting the model of brain in processing information using spikes and neurons. The theoretical study of the model has proved that it can compute sets of positive numbers, Boolean functions and string languages. Cycle picture language is a set of pictures obtained using cycle grammar and chain code representation. In this paper we aim to compute the cycle picture languages using a variant of SN P system namely, Sequential SN P System using neurons and spiking rules. We compute the cycle picture language of sequence of chains.

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Chain Code P System using Cycle Grammar

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b1452.078219 ◽

2019 ◽

Vol 8 (2) ◽

pp. 327-330

Keyword(s):

Distributed Computing ◽

P System ◽

Chain Code ◽

Computing Model ◽

System A ◽

Frame Work ◽

Picture Languages ◽

String Rewriting ◽

Rewriting Rules

P system is a bio-inspired distributed computing model to generate string languages [4], arrays [7] and tessellation patterns [2]. Chain Code P System is a string rewriting computing model to generate chain code picture languages in the frame work of P system. A variant of chain code P system is introduced in this paper, namely Cycle Rewriting Chain Code P system, where the string rewriting rules uses cycle grammar to construct cycle picture languages. We consider the problem of constructing chain code picture languages with even number of chains, kites, Von Koch quadric 8 segment like curves and Von Koch-like curves

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Types of P System and Triangular Picture Languages

2018 1st International Conference on Computer Applications & Information Security (ICCAIS) ◽

10.1109/cais.2018.8442037 ◽

2018 ◽

Author(s):

K. Bhuvaneswari ◽

T. Kalyani

Keyword(s):

P System ◽

Picture Languages

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Structural aspects of silicon diffusion in quaternary III-V thin-film semiconductors

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100088567 ◽

1991 ◽

Vol 49 ◽

pp. 850-851

Author(s):

F. A. Ponce ◽

R. L. Thornton ◽

G. B. Anderson

Keyword(s):

Semiconductor Lasers ◽

Wide Bandgap ◽

Semiconductor Diode ◽

Visible Range ◽

P System ◽

Misfit Dislocations ◽

Lattice Match ◽

Semiconductor Diode Laser ◽

Thin Film Semiconductors ◽

Silicon Diffusion

The InGaAlP quaternary system allows the production of semiconductor lasers emitting light in the visible range of the spectrum. Recent advances in the visible semiconductor diode laser art have established the viability of diode structures with emission wavelengths comparable to the He-Ne gas laser. There has been much interest in the growth of wide bandgap quaternary thin films on GaAs, a substrate most commonly used in optoelectronic applications. There is particular interest in compositions which are lattice matched to GaAs, thus avoiding misfit dislocations which can be detrimental to the lifetime of these materials. As observed in Figure 1, the (AlxGa1-x)0.5In0.5P system has a very close lattice match to GaAs and is favored for these applications.In this work, we have studied the effect of silicon diffusion in GaAs/InGaAlP structures. Silicon diffusion in III-V semiconductor alloys has been found to have an disordering effect which is associated with removal of fine structures introduced during growth. Due to the variety of species available for interdiffusion, the disordering effect of silicon can have severe consequences on the lattice match at GaAs/InGaAlP interfaces.

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