Collective approach for modeling complex system failures

2002 ◽  
Author(s):  
Siang-Ying Choy ◽  
J.R. English ◽  
T.L. Landers ◽  
Li Yan
Keyword(s):  
Complex System ◽  
System Failures ◽  
Modeling Complex System

Radical schemes for the implementation of section structures of the RADICAL language when modeling complex purposeful system

2021 ◽  
Author(s):  
M.V. Pirogov
Keyword(s):  
Complex System ◽  
Cross Sections ◽  
Problem Area ◽  
Information Support ◽  
Existing Problems ◽  
Modeling Technology ◽  
Universal Language ◽  
The Media ◽  
Modeling Complex System ◽  
Automation Tools

Complex artificial purposeful systems and their software and hardware are characterized not only by achievements, but also disadvantages leading to significant losses. Modern automation tools do not fully cope with the existing problems. To solve the problems of complex systems, new effective tools are needed, new modeling technology. This technology should cover all significant aspects of the problem area. It seems that such technology should be based on radical modeling and the universal language of radical schemes RADICAL. A radical is a system characterized by both active (working) and passive states. Being connected with each other radicals form schemes of radicals. These schemes are constructions of the RADICAL language. In the aggregate, these schemes realize radical environment – radical model of united problem area of complex system. That is, the problem area is represented by a single global scheme of radicals. The work with such a scheme is carried out using the universal language of radical schemes RADICAL, applicable to the problem area of any complex system by constructing sections of the RADICAL language, expressed by the schemes of radicals. The purpose of the work is to consider the use of radical schemes for the implementation of the structures of sections (sequences of sections) of the RADICAL language when modeling complex system. The results of the work are descriptions of some typical schemes of radicals intended for the implementation of the section structures of the RADICAL language when modeling complex purposeful systems. Something significant sequences of sections are considered. The practice of using of structures of cross-sections of the media of radicals, expressed by the schemes of radicals, indicates the expediency of they use for radical modeling of problem areas of complex purposeful systems, for the development and modification of software and information support of such systems.

Combined Logical-Probabilistic and Linguistic Modeling of Complex System Failures

2015 ◽  
Vol 74 (1) ◽  
pp. 35-42
Author(s):  
A Gorodetsky ◽  
◽  
I Tarasova ◽  
V Zinyakov ◽  
◽  
...  
Keyword(s):  
Complex System ◽  
System Failures ◽  
Linguistic Modeling

scholarly journals Generic characterization of diagnosis and prognosis for complex heterogeneous systems

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Pauline Ribot ◽  
Yannick Pencol´ ◽  
Michel Combacau
Keyword(s):  
Complex System ◽  
Monitoring System ◽  
Heterogeneous Systems ◽  
Modeling Framework ◽  
Global System ◽  
System Failures ◽  
Diagnosis And Prognosis ◽  
Generic Modeling ◽  
Prognostic Functions

Maintenance efficiency of complex industrial systems is an important economical and business issue. Main difficulties come from the choice of maintenance actions. A wrong choice can lead to maintenance costs that are not acceptable. In this paper, we propose a generic health monitoring system that integrates some diagnostic and prognostic capabilities to determine the current and future state of a large and complex system such as an aircraft. The diagnostic function aims at identifying faulty components that may cause global system failures. The prognostic function estimates the remaining time until the next global system failure. A formal and generic modeling framework for a complex system encapsulating the knowledge required to get the consistent coordination of the diagnostic and prognostic functions is presented. We propose in this framework to take into account component redundancies which is common in systems like aircrafts. Moreover, an original coupling of diagnosis and prognosis is established based on the characterization of the system operational modes and on a decentralized architecture of the monitoring system.

The Role of Automation in Complex System Failures

2005 ◽  
Vol 1 (1) ◽  
pp. 56-61 ◽  
Author(s):  
Shawna J. Perry ◽  
Robert L. Wears ◽  
Richard I. Cook
Keyword(s):  
Complex System ◽  
System Failures

A Reproducible Selective Stain for Cardiac Sarcoplasmic Reticulum

1974 ◽  
Vol 32 ◽  
pp. 214-215
Author(s):  
R. A. Waugh ◽  
J. R. Sommer
Keyword(s):  
Complex System ◽  
Electron Microscope ◽  
Sarcoplasmic Reticulum ◽  
Transmission Electron Microscope ◽  
Electron Microscopic ◽  
Cardiac Sarcoplasmic Reticulum ◽  
Transmission Electron

Cardiac sarcoplasmic reticulum (SR) is a complex system of intracellular tubules that, due to their small size and juxtaposition to such electron-dense structures as mitochondria and myofibrils, are often inconspicuous in conventionally prepared electron microscopic material. This study reports a method with which the SR is selectively “stained” which facilitates visualizationwith the transmission electron microscope.

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