Discrete-event modeling by system dynamics method

2021 ◽  
Author(s):  
A. N. Medvedev ◽  
V. N. Timokhin ◽  
Yu. A. Nelyubina
Keyword(s):  
System Dynamics ◽  
Discrete Event ◽  
Event Modeling ◽  
Dynamics Method

scholarly journals Investigation of Road Transport Enterprise Functioning on the Basis of System Dynamics

2018 ◽  
Vol 19 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Jurijs Tolujevs ◽  
Otegali Shedenov ◽  
Gani Askarov
Keyword(s):  
System Dynamics ◽  
Discrete Event ◽  
Road Transport ◽  
Quantitative Model ◽  
Simulation Software ◽  
Factors Affecting ◽  
Agent Based ◽  
The Road ◽  
Concise Review ◽  
Dynamics Method

Abstract The work is devoted to the study of the possibilities to apply the System Dynamics method for the analysis of processes at the road transport enterprises. The study contains a concise review on examples of three simulation paradigms application for creating models, associated with the road motor transport. The following paradigms were under consideration: Discrete Event, Agent Based, and System Dynamics. Furthermore, the paper describes the causal loop diagram designed using the principles of system dynamics. This diagram is a qualitative model that represents the relationships between the main factors affecting the performance indicators of a road transport enterprise. The quantitative model constructed using the principles of system dynamics is also represented. The mentioned model reflects the process of functioning of a road transport enterprise during the year. The model is developed using Vensim simulation software.

scholarly journals Combined approach architecture development to simulation modeling of systems with parallelism

2021 ◽  
Vol 4 (4(112)) ◽  
pp. 74-82
Author(s):  
Oksana Suprunenko
Keyword(s):  
Petri Nets ◽  
Dynamic Properties ◽  
Discrete Event ◽  
Structural Similarity ◽  
Integral Model ◽  
Combined Approach ◽  
Dynamic Simulations ◽  
Holistic Model ◽  
Event Modeling ◽  
Analytical Tools

Paradigms and graphical-analytical tools for building simulation tools and forming the architecture of a combined approach to studying the dynamic properties of systems with parallelism are described. An extension of the formal language of Petri nets is presented, which has greater modeling power than WF nets. The properties of hierarchical Petri nets are used to synthesize a holistic model. Discrete-event modeling and modeling of dynamic systems, which allow reflecting the quantitative and qualitative characteristics of the elements of the systems under study, served as the basis for the combined approach to the simulation of systems with parallelism. On their basis, graphic-analytical tools are proposed that provide the ability to describe the modeled system, adhering to the principle of structural similarity. They have dynamic simulations that make it easy to visually analyze and correct the model. Also, the proposed toolkit provides for the analysis of the dynamic properties of the model, which makes it possible to identify accumulated phenomena that can lead to unpredictability of the system’s functioning. A conceptual model for the synthesis and analysis of systems with parallelism is proposed, which provides for the construction of the components of the model based on the architecture. Their step-by-step analysis and the formation of an integral model of the software system are carried out using a network representation, according to the matrix description of which invariants are calculated. The analysis of invariants allows one to obtain the dynamic properties of the model and determine the localization of structures that lead to critical situations when they are detected. The architecture of the combined approach to the simulation of systems with parallelism is built, which provides the study of their dynamic properties to improve the reliability of the functioning of software systems

scholarly journals A Study on The Assessment of Flood Damages by System Dynamics Method

1976 ◽  
Vol 7 ◽  
pp. 77-94
Author(s):  
Seiichi KAGAYA ◽  
Estuo YAMAMURA
Keyword(s):  
System Dynamics ◽  
Flood Damages ◽  
Dynamics Method
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