Modeling Complex System Testing: Characterizing Test Coverage to Improve Information Return

2011 ◽  
Author(s):  
Karl Pfeiffer ◽  
Valery Kanevsky ◽  
Thomas Housel
Keyword(s):  
Complex System ◽  
Test Coverage ◽  
System Testing ◽  
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.

scholarly journals Testing Software Rejuvenation Policy for Time and Load Balancing Scheme in Complex System Using Deterministic-NDST Approach

2016 ◽  
Vol 1 (3) ◽  
pp. 185
Author(s):  
Nagaraj G Cholli ◽  
Khalid Amin Shiekh ◽  
G N Srinivasan
Keyword(s):  
Complex System ◽  
Load Balancing ◽  
System Reliability ◽  
Deterministic System ◽  
System Testing ◽  
Traditional Form ◽  
Software Rejuvenation ◽  
Long Run ◽  
Reliability And Availability

Software rejuvenation has become a new horizon for increasing the system reliability and availability in a long run. One of the concept in software rejuvenation policy involves rebooting the system by suspending the disk and capturing the images of processes currently running in the system. In our rejuvenation policy we make use an intelligent time and load algorithm for deciding the optimal rejuvenation period. Since at any given time there can be n number of processes running in the system with different physical memory utilizations and variable workloads running, it becomes very vital to thoroughly test the system with highly chaotic and disruptive workloads. For this we use some non-traditional form of testing which we call non deterministic system testing (NDST) to test different features and conditions of system

A Probabilistic Approach to Safety System Testing and Maintenance

1974 ◽  
Vol 96 (3) ◽  
pp. 175-180 ◽  
Author(s):  
S. C. Chay ◽  
W. D. Loftus ◽  
M. Mazumdar
Keyword(s):  
Complex System ◽  
A Priori ◽  
Probabilistic Approach ◽  
Safety System ◽  
Failure Rates ◽  
System Testing ◽  
Maintenance Schedule ◽  
Failure Data ◽  
Periodic Testing ◽  
Field Failure

This paper presents a method to quantify in terms of probabilistic availability the effects of testing and maintenance schedule on the performance of a standby safety system and it describes the mathematical rationale which lies behind it. The purpose of periodic testing and maintenance is to detect any unannounced failures in the system, repair them, and thus ensure the readiness or availability of the equipment. A scheme is given to model generally any complex system in terms of easily visualized equivalent block diagrams such that the formulas developed in this paper or similarly developed formulas can be easily applied. Also presented is a method for incorporating the field failure data to refine a´ priori assumed failure rates which were used in the initial computations.

scholarly journals Evaluation of test coverage for embedded system testing

1998 ◽  
pp. 111-126 ◽  
Author(s):  
Jinsong Zhu ◽  
Son T. Vuong ◽  
Samuel T. Chanson
Keyword(s):  
Embedded System ◽  
Test Coverage ◽  
System Testing

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.

Sign in / Sign up

Export Citation Format

Share Document