The article improves the efficiency of counteracting unauthorised access by using algorithms and a protocol for monitoring information security in fibre-optic transmission systems and access networks with the help of the proposed software, which functions as part of a combined (hardware and software) method of protecting optical information flows in FOCLs. The principles of building network protocols are investigated. The functionality of the developed algorithms and the protocol for monitoring the information security of fibre-optic transmission systems is substantiated. The algorithms for stopping and restoring the transmission mode for the subscriber and linear sections of the optical network based on GPON and GEPON technologies, as well as the protocol for monitoring the information security of fibre-optic transmission systems are developed. The practical significance of the work is to improve information security through the use of a combined security control tool that operates on the basis of the developed algorithms and the information security control protocol.
The article examines the analysis of the multistage process of correlation interactions in parallel-hierarchical structures for organization of neuro-like calculations. The process of formation of parallel-hierarchical network is considered in detail. The graph-scheme of PH transformation is given. The process of elements formation for five levels of the network is analyzed. It was determined which elements are correlated and decorrelated in time. Based on the analysis, a structural-functional model of correlation interactions of parallel-hierarchical network elements was developed.
In the evidence-based diagnosis of nasal breathing disorders and the planning of corrective surgical procedures, it is not sufficient to examine only the general characteristics of airflow - averaged values of aerodynamic parameters such as airflow rate, pressure drop, and aerodynamic nasal resistance. It is necessary to investigate the effect of airflow on the mucosa at the micro level, which, when pathological conditions develop, leads to excessive drying of the nasal cavity surface. To do this, it is necessary to compare the width of the laminar boundary layer – the parietal region, where the maximum change in airflow velocity is observed, and the height of the nasal mucosa irregularity. The calculated values of the laminar airflow boundary layer were obtained from model representations of the complex spatial configuration of the nasal cavity using a circular channel of equivalent diameter.
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