Dynamics of Complex Systems - XXI century最新文献

筛选

英文中文

Hybrid approaches of accident modeling for risk management in socio-technical systems 社会技术系统中风险管理事故建模的混合方法

Dynamics of Complex Systems - XXI century Pub Date : 1900-01-01 DOI: 10.18127/j19997493-202102-02

M. Kiwan, D. Berezkin, A. Hamed

{"title":"Hybrid approaches of accident modeling for risk management in socio-technical systems","authors":"M. Kiwan, D. Berezkin, A. Hamed","doi":"10.18127/j19997493-202102-02","DOIUrl":"https://doi.org/10.18127/j19997493-202102-02","url":null,"abstract":"Statement of a problem. The increasing complexity in high-tech systems leads to potentially disastrous failure models and new kinds of safety issues. This led to the development of new approaches, for modeling accidents and risk management. In recent years, extended and hybrid approaches have been gaining popularity due to their effectiveness in decision-making for the design and operation of socio-technical systems. The proliferation of these approaches makes it difficult to select the appropriate approach for a particular system. Purpose. Conduct a comparative analysis of various hybrid approaches of accidents in complex systems, identify the strengths and weaknesses of each one, and study the feasibility of their use in risk management in socio-technical systems. Results. The paper analyzes the main approaches of accident modeling (FRAM, STAMP, failure tree, AcciMap) and their limitations in determining cause-effect relationships and dynamics of modern complex systems. New approaches to safety and accident modeling in sociotechnical systems are discussed, these approaches depend on combining several models into one hybrid approach: FuzzyFTA, FRAM-ANP, ACAT-FRAM, STAMP-HFACS, AcciMap-ANP, and SD-ET-FT-ANN. A review of hybrid approaches of accident modeling in complex systems and identify weaknesses and strengths, as well as the application field of each one of these approaches. Practical importance. This study will be a guide for researchers in the field of accident modeling and risk management in sociotechnical systems. It also concludes that it is necessary to use different approaches to risk management depending on the type of risk and the complexity of the system.","PeriodicalId":370962,"journal":{"name":"Dynamics of Complex Systems - XXI century","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124089913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Analysis of the features of the protection system of the domestic special-purpose operating system 国产专用操作系统保护系统的特点分析

Dynamics of Complex Systems - XXI century Pub Date : 1900-01-01 DOI: 10.18127/j19997493-202101-04

R. A. Dorokhin, O. A. Bezrodnykh, S. Smirnov, V. Maystrenko

{"title":"Analysis of the features of the protection system of the domestic special-purpose operating system","authors":"R. A. Dorokhin, O. A. Bezrodnykh, S. Smirnov, V. Maystrenko","doi":"10.18127/j19997493-202101-04","DOIUrl":"https://doi.org/10.18127/j19997493-202101-04","url":null,"abstract":"The paper considers the task of studying the features of the protection system of the operating system Astra linux 1.6 SE (Further OS Astra 1.6 SE). The basic principles of access control, functional features of protection modules, settings of some configuration files of the operating system, as well as types and features of classification marks are revealed. The result of this work is the proposal for the implementation of the possibility of configuring the basic access control mechanisms without using a graphical shell, the study of the principle of operation of these mechanisms, as well as the use of the features of kernel modules, configuration files for the design of a security system for computer facilities by information protection units. This operating system has a specific feature of the structure of the security system, since it includes mechanisms for mandatory access control, allowing access to be denied or allowed depending on the user's authority. The exchange and processing of information occurs with the use of classification labels, which make it possible to delimit information flows of different mandated contexts. These labels are written in accordance with GOST R 58256-2018 “Information security. Information flow control in the information system. Format of classification marks”. The paper analyzes traffic in different mandated sessions, and also considers the behavior of information flows regarding interaction in a network of computers with the installed OS Astra linux 1.6 SE and the security system configured on it. In this case, the exchange of data will occur both with users in the same sessions and in different ones that differ between computers.","PeriodicalId":370962,"journal":{"name":"Dynamics of Complex Systems - XXI century","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123487011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solution of the Helmholtz equation for electromagnetic waves in an annular (segmented-annular) rectangular waveguide 环形(分段环形)矩形波导中电磁波亥姆霍兹方程的解

Dynamics of Complex Systems - XXI century Pub Date : 1900-01-01 DOI: 10.18127/j19997493-202102-06

D. Semenov, D.S. Gudilin

{"title":"Solution of the Helmholtz equation for electromagnetic waves in an annular (segmented-annular) rectangular waveguide","authors":"D. Semenov, D.S. Gudilin","doi":"10.18127/j19997493-202102-06","DOIUrl":"https://doi.org/10.18127/j19997493-202102-06","url":null,"abstract":"Formulation of the problem. When designing waveguides, spatial solutions are often in demand. However, from a methodological (including educational) point of view, mostly linear-extended structures with various sectional shapes are considered. The aim of this work is to consider a waveguide as a structure composed of segments bent in a plane with a certain radius. On the other hand, this solution is common for a plane-oriented waveguide path and, in the case of an infinitely large radius, converges to a solution for a straight waveguide. Practical significance. The presented solution of the Helmholtz equation for electromagnetic waves in an annular (segmentedannular) waveguide can be considered as a methodological basis for calculating a spatially oriented rectangular waveguide path. A step-by-step solution of the Helmholtz equation for a bent rectangular waveguide is presented; a methodology for determining the parameters of the electromagnetic field in a bent homogeneous waveguide is given. Expressions are derived for determining the parameters of the electromagnetic field components for waves of type E and H. General solutions are obtained that converge at an infinitely large bending radius to harmonic functions characteristic of solutions as applied to rectilinear waveguides. This technique can be applied both for analytical evaluation or numerical calculation and spatial modeling of waveguide parameters, and for designing the waveguide path as a whole. The presence of relatively simple analytical expressions greatly facilitates the task of analyzing and optimizing the waveguide path and building software and computing systems for their assessment, modeling and development.","PeriodicalId":370962,"journal":{"name":"Dynamics of Complex Systems - XXI century","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132211223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

首页上一页