Stochastic performability measurement for software system with random performance degradation and field-oriented restoration

2010 ◽  
Vol 1 (4) ◽  
pp. 330-339 ◽  
Author(s):  
Koichi Tokuno ◽  
Shigeru Yamada
Keyword(s):  
Performance Degradation ◽  
Software System ◽  
Random Performance

scholarly journals Availability Modelling of Cluster-Based System with Software Aging and Optional Rejuvenation Policy

2019 ◽  
Vol 19 (4) ◽  
pp. 90-100
Author(s):  
Richa Sharma ◽  
Gireesh Kumar
Keyword(s):  
Sensitivity Analysis ◽  
Performance Degradation ◽  
High Availability ◽  
Software System ◽  
System Availability ◽  
Software Failures ◽  
Software Aging ◽  
Availability Analysis ◽  
Innovative Concept

Abstract This investigation deals with modeling and availability analysis of cluster-based system inflicted with software aging. Software aging is a phenomenon in which a software system shows performance degradation with time and finally results in software failures. To cope up with this phenomenon, rejuvenation is an innovative concept to recover from software failures. As failures occur, server has the option either to take essential rejuvenation with probability p or may opt for optional rejuvenation with complementary probability q. To achieve high availability of the system, the concept of clustering is also taken into consideration. In this study, restart, reboot and standby concept is used for reducing the downtime cost. The sensitivity analysis of different parameters on system availability has been examined numerically. By integrating clustering, software aging and rejuvenation, the researchers intended to increase the availability and decrease the down time.

DARR: A Free-text Analysis System for the Automatic Documentation of Radiological Reports

1977 ◽  
Vol 16 (03) ◽  
pp. 144-153 ◽  
Author(s):  
E. Vaccari ◽  
W. Delaney ◽  
A. Chiesa
Keyword(s):  
Natural Language ◽  
Text Analysis ◽  
Automatic Documentation ◽  
Free Text ◽  
Software System ◽  
Automatic Translation ◽  
Radiological Report ◽  
Analysis System ◽  
Content Processing

A software system for the automatic free-text analysis and retrieval of radiological reports is presented. Such software involves: (1) automatic translation of the specific natural language in a formalized metalanguage in order to transform the radiological report in a »normalized report« analyzable by computer; (2) content processing of the normalized report to select desired information. The approach used to accomplish point (1) is described in detail referring to a specific application.

GPS Receiver Performance Degradation in the Presence of Faded Interference

2016 ◽  
Author(s):  
Kyle D. Wesson ◽  
Swen D. Ericson ◽  
Terence L. Johnson ◽  
Karl W. Shallberg ◽  
Per K. Enge ◽  
...  
Keyword(s):  
Performance Degradation ◽  
Gps Receiver ◽  
Receiver Performance

THE ALGORITHMS FOR SOFTWARE SYSTEM OF SCIENTIFIC PUBLICATIONS ANALYSIS

2016 ◽  
Vol 23 (99) ◽  
pp. 53-57
Author(s):  
Evgenij V. Berlizov ◽  
◽  
Viktor Hapiak ◽  
Vira Liubchenko ◽  
◽  
...  
Keyword(s):  
Software System ◽  
Scientific Publications

THE IDENTIFICATION OF PARAMETERS OF THEORIES USED FOR PROGNOSES OF POST MINING DEFORMATIONS BY MEANS OF PRESENT SOFTWARE / IDENTYFIKACJA WARTOŚCI PARAMETRÓW TEORII PROGNOZOWANIA WPŁYWÓW PRZY WYKORZYSTANIU WSPÓŁCZESNYCH NARZĘDZI INFORMATYCZNYCH

2013 ◽  
Vol 58 (4) ◽  
pp. 1347-1357 ◽  
Author(s):  
Roman Ścigała
Keyword(s):  
Rock Mass ◽  
Land Surface ◽  
Underground Mining ◽  
Transient State ◽  
Computer Programs ◽  
Asymptotic State ◽  
Software System ◽  
Practical Utilization ◽  
Identification Of Parameters ◽  
Graphical Processing

Abstract The characteristic of specialized computer programs has been presented, serving for identification of W. Budryk-S. Knothe theory parameters, used for description of asymptotic state of post-mining deformations, as well as for transient state. The software is the result of several years of authors’ work. It is a part of complete software system designed for forecasting of underground mining influences on the rock mass and land surface and graphical processing of calculations results. Apart from software description, a short example of its practical utilization has been attached.

General model to predict performance degradation in centrifugal pumps.

2016 ◽  
Author(s):  
Edgar Ofuchi ◽  
Ana Leticia Lima Santos ◽  
Thiago Sirino ◽  
Henrique Stel ◽  
Rigoberto Morales
Keyword(s):  
General Model ◽  
Performance Degradation ◽  
Centrifugal Pumps
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