scholarly journals The Proposal of the Process of Safety Analysis for Complex Dynamic Technology Systems

2013 ◽  
Vol 21 (Special-Issue) ◽  
pp. 104-108
Author(s):  
Milan Štrbo ◽  
Pavol Tanuška ◽  
Augustín Gese
Keyword(s):  
Control System ◽  
Dynamic Systems ◽  
Quantitative Methods ◽  
Safety Analysis ◽  
Complex Dynamic ◽  
Critical States ◽  
Safety Critical ◽  
Qualitative And Quantitative ◽  
Qualitative And Quantitative Methods ◽  
Complex Dynamic Systems

Abstract The aim of this article is the proposal of process of the safety analysis for complex dynamic systems in process of the proposal of control system for safety-critical processes. The method of safety analysis depends on various safety-critical states of system which are system are controlled by models. We propose to use the method SQMD for modeling these states. This method combines qualitative and quantitative methods of modeling states and takes advantage of both methods. The model of the proposal is shown in the diagram. The article includes detailed description of the tasks for each step of analysis.

Safety Analysis for Complex Dynamic Systems

2013 ◽  
Vol 404 ◽  
pp. 719-725
Author(s):  
Milan Strbo ◽  
Pavol Tanuska ◽  
Lukas Smolarik ◽  
Igor Hagara ◽  
Augustin Gese
Keyword(s):  
Control System ◽  
Dynamic Systems ◽  
Quantitative Methods ◽  
Hazard Analysis ◽  
Safety Analysis ◽  
Complex Dynamic ◽  
Safety Critical ◽  
Qualitative And Quantitative ◽  
Qualitative And Quantitative Methods ◽  
Complex Dynamic Systems

The content of this article is the proposal of process of the safety analysis for complex dynamic systems. The safety analysis is carried out in process of the proposal of control system for safety-critical processes. In preliminary hazard analysis is done the identifying all possible risks by PHI method. The PHA method is used to analyze these risks. The method of safety analysis depends on various safety-critical states of system which are system are controlled by models. We propose to use the method SQMD for modeling these states. This method combines qualitative and quantitative methods of modeling states and takes advantage of both methods. The model of the proposal is shown in the diagram. The article includes detailed description of the tasks for each step of analysis.

The Dynamical Systems Safety Analysis by SQMD Method

2014 ◽  
Vol 693 ◽  
pp. 92-97
Author(s):  
Pavol Tanuska ◽  
Milan Strbo ◽  
Augustin Gese ◽  
Barbora Zahradnikova
Keyword(s):  
Dynamical System ◽  
Control System ◽  
Dynamical Systems ◽  
Critical Points ◽  
Safety Analysis ◽  
Critical System ◽  
Safety Critical ◽  
Qualitative And Quantitative ◽  
Safety Critical System

The objective of the article is to demonstrate the principle of the SQMD method concept for performing safety analysis on the example of a dynamical system. The safety analysis is performed in the process of designing a control system for safety-critical system processes. The safety analysis is aimed at using the models to monitor different critical points of the system. For the purpose of modelling, we suggest using the SQMD method combining qualitative and quantitative procedures of modelling and taking both methods advantages.

Model-Oriented Safety Analysis of Dynamic Technological Systems

2014 ◽  
Vol 474 ◽  
pp. 127-134
Author(s):  
Milan Strbo ◽  
Pavol Tanuska ◽  
Augustin Gese ◽  
Marek Korytar
Keyword(s):  
System Development ◽  
Safety Analysis ◽  
Hybrid Models ◽  
Technological Systems ◽  
Critical States ◽  
Safety Critical ◽  
Qualitative And Quantitative ◽  
Quantitative Models ◽  
Qualitative Models ◽  
On Line

The paper deals with the safety analysis for dynamic technological systems. The analysis is performed in the phase of control system development. The SQMD method has been proposed to use for safety analysis of dynamical systems. We created models for safety-critical states of system using this method. The models are divided to qualitative and quantitative. Qualitative models are created by using of fuzzy logic. There we will use the knowledge and experience of safety analysis of similar systems. Quantitative models are constructed by using of differential and difference equations. Mathematical models are verified by simulation. Hybrid models for individual safety-critical states are constructed by synthesis of qualitative and quantitative models. Finally is performed on-line monitoring and fault detection in real system by using these hybrid models.

The Status of Livelihood Vulnerability and Its CopingCapacities of Urban Squatters in Kathmandu Metropolitan City, Nepal

Patan Pragya ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 19-32
Author(s):  
Chhabi Ram Baral
Keyword(s):  
Data Collection ◽  
Urban Area ◽  
Urban Areas ◽  
Quantitative Methods ◽  
Urban Poverty ◽  
Rural Poverty ◽  
Poor People ◽  
Qualitative And Quantitative ◽  
Qualitative And Quantitative Methods ◽  
The Status

Urban poverty is one of multidimensional issue in Nepal. Increasing immigration from the outer parts of Kathmandu due to rural poverty, unemployment and weak security of the lives and the properties are core causes pushing people into urban areas. In this context how squatter urban area people sustain their livelihoods is major concern. The objectives of the study are to find out livelihood assets and capacities squatters coping with their livelihood vulnerability in adverse situation. Both qualitative and quantitative methods are applied for data collection. It is found that squatters social security is weak, victimized by severe health problems earning is not regular with lack of physical facilities and overall livelihood is critical. This study helps to understand what the changes that have occurred in livelihood patterns and how poor people survive in urban area.

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