Artificial noise in read-write simulation of optical disk and drive

Article Abstract:

When the mathematical model of the read-write (R/W) simulation of write once and read many (WORM) optical disk and drive was formulated and numerical analysis and software implementation of the simulation were carried out for the noise-free R/W process, it was found that the numerical process of the simulation introduced artificial noise in the read back signal. The artificial noises were due to finite precision of integration, finite density of written spot, and finite number of pits simulated. The noises can be reduced, but at the expense of computational time. (Reprinted by permission of the publisher.)

Computer storage devices, Mathematical models, Product introduction, Noise (Sound), Optical disk drives, Modeling, Data modeling software, Signal processing, Optical Memory, Simulation, New Technique, Noise, Read/Write Heads, Read-write heads, technical, Optical Disk Drive, WORM

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Neural networks and simulation: modeling for applications

Article Abstract:

Artificial neural networks simulate biological processes in an intriguing manner. Ideas gleaned from the study of neurophysiology and animal behavior have become realizable in recent years. The advent of computers capable of rapidly executing massively parallel and distributed processes has allowed ideas from diverse fields to be merged and tested. The resulting neural networks, simulated in software and/or hardware, provide an adaptable, robust modeling tool useful to simulationists in all disciplines. (Reprinted by permission of the publisher.)

Systems analysis, Neural networks, Artificial intelligence, Technical, Parallel processing, System Design, Continuous Simulation, Discrete Simulation, Distributed Processing, Scientific Research, Simulation of Computer Systems, Modeling of Computer Systems, Neural Network

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