discrete event model
Recently Published Documents


TOTAL DOCUMENTS

61
(FIVE YEARS 12)

H-INDEX

11
(FIVE YEARS 2)

Author(s):  
A. A. Bogdanov ◽  
A. A. Lyubchenko ◽  
E. Yu. Kopytov

The paper presents a discrete-event model of non-maintained railway telecommunication equipment operation. The model developed in the AnyLogic environment allows to estimate the availability factor and specific quality indicator of such systems, as well as to predict time spent in various states. The presented model can be used both at the design and operation stage for the compliance assessment of telecommunication equipment parameters with the reliability requirements.


Author(s):  
Владимир Александрович Минаев ◽  
Евгений Сергеевич Поликарпов

Обсуждаются структура современных центров мониторинга информационной безопасности (ЦМИБ) и схема прохождения сообщений через блок SIEM (Security Information and Event Management). Дано ограничение на время обработки сообщения о событиях в SIEM. Изучены результаты некоторых имитационных экспериментов c управлением кадровыми ресурсами SOC-Центра. Показано, что для оптимизации управления ресурсами центров обеспечения информационной безопасности современных предприятий эффективно применимы методы дискретно-событийного моделирования. Разработанная авторами дискретно-событийная модель SOC-центра позволяет решать задачи управления и оптимизации кадрового ресурса, прогнозирования и анализа поведения центра при различных штатных и внештатных ситуациях. Выбранное в качестве среды имитационного моделирования программное обеспечение Anylogic позволяет воспроизводить различные сценарии с помощью дискретно-событийных моделей, производить интерпретацию результатов моделирования и управлять факторным комплексом моделей во время их работы, проводить различные виды имитационных экспериментов, в том числе - по вариации параметров моделей, оптимизации и многое другое. Эксперименты подтвердили устойчивость и адекватность математической модели оптимизации управления кадровыми ресурсами. При проведении исследований дискретно-событийной модели SOC-центра показано, что организация борьбы с компьютерными атаками осуществляется эффективнее при оптимальном распределении кадровых ресурсов. В ходе эксперимента по организации целенаправленной компьютерной атаки выявлено, что модель с оптимальным распределением кадрового ресурса устойчива к атакам различного масштаба, включая массовые. The structure of modern Information Security Monitoring Centers (ISMC) and the scheme of passing messages through the SIEM (Security Information and Event Management) block are discussed. The time limit for processing the event message in SIEM is given. The results of some simulation experiments with the human resources of the SOC-center are investigated. It is shown that the methods of discrete-event modeling are effectively applied to optimize the resource management of information security centers of modern enterprises. The discrete-event model of the SOC-center developed by the authors allows solving the problems of managing and optimizing the human resource, predicting and analyzing the behavior of the center in various regular and emergency situations. The Anylogic software chosen as the simulation environment allows you to reproduce various scenarios using discrete-event models, interpret the simulation results and manage the factor complex of models during their operation, conduct various types of simulation experiments, including model parameter variations, optimization, and much more. The experiments confirmed the stability and adequacy of the mathematical model for optimizing human resource management. When conducting studies of the discrete-event model of the SOC-center, it is shown that the organization of the fight against computer attacks is carried out more efficiently with an optimal distribution of human resources. During the experiment on the organization of a targeted computer attack, it was revealed that the model with the optimal distribution of human resources is resistant to attacks of various scales, including mass ones.


2021 ◽  
Vol 34 (01) ◽  
pp. 193-204
Author(s):  
Dmitry V. Pashchenko ◽  
Dmitry A. Trokoz ◽  
Alexey I. Martyshkin ◽  
Tatyana Yu. Pashchenko ◽  
Mikhail M. Butaev ◽  
...  

Managing the systems which behaviour is non-deterministic is one of the most important problems in modern management theory. Today, systems with structural and behavioural complexity are prevalent in all areas of human activity, and therefore, their research is of the utmost importance. Such systems, as opposed to deterministic systems, are called non-deterministic. They are characterised by difficult predictable behaviour determined both by external random influences, and within the systems themselves. A clear example of a non-deterministic system is crowds of people, factories, and computer networks and systems. The problem of non-deterministic behaviour directly within the context of professional activities can be seen using an example of building syntactic analysers. The aim of the paper is to design a class of systems oriented towards supporting elements of a discrete event model. The target of research is to simulate discrete event models. The subject of research is a creation of a discrete event model based on the behaviour of an undetermined finite state automaton. During the preparation of the paper, there was developed and practically implemented an algorithm for the application, which materializes the principle of working with threads. The results obtained in the paper are aimed at solving the problem of parallel data processing based on the parallelism of NFA's (non-deterministic finite automaton) behaviour when reading the input string characters. As a result, this should have a positive impact on the regulation of the simulation processes of a non-deterministic system, increasing its efficiency and stability. In conclusion, the algorithm of the application work is disclosed and conclusions about the effectiveness and efficiency of its development are drawn.


2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Ludovica Adacher ◽  
Marta Flamini

This paper deals with the optimization of the Check-in, passenger migration, and Security Control processes in an airport land side terminal. Given the layout of the terminal, the passengers’ flow, and the scheduled flights in a given time interval, the number and the position of Check-in counters and Security Control gates to be opened are output. The objective function is the minimization of the costs to activate the Check-in counters and the Security Control gates plus the costs that measure the passengers’ discomfort. The stochastic passengers’ behaviour and their preferences are simulated by a discrete event model, while the managing costs and the passengers’ discomfort are optimized by the Surrogate Method. Capodichino Airport, located in Naples (IT), has been considered for the test phase. Results show the effectiveness and efficiency of the solutions of the Surrogate Method compared with the performances of other algorithms.


2019 ◽  
Vol 6 (2) ◽  
pp. 95-100
Author(s):  
Joshua Bieger ◽  
Jadalaine Ferrer ◽  
Dillon Riedlinger ◽  
William Xu ◽  
Jeffrey Demarest

To maintain the United States military’s capability to deploy rapidly across the globe, logistical planning tools, simulations, and models enhance leaders’ decision making abilities. This research develops a discrete event model designed to simulate military operations within a railyard in order to support the Engineer Research and Development Center’s (ERDC) Planning Logistics Analysis Network System (PLANS). The research team chose the Port of Bremerhaven, Germany as a case study due to its relevance to current military operations, granting us access to timely data and stakeholders with recent operational experience. The discrete event simulation (DES) utilizes stochastic processes and multiple layouts in order to analyze the amount of time it takes to move varying amounts of cargo and vehicles and identify potential bottlenecks in the operation.


Sign in / Sign up

Export Citation Format

Share Document