In 1978, Lientz, Swanson, and Tompkins published the results of a survey on software maintenance. They found that 17.4% of maintenance effort was categorized as corrective in nature, 18.2% as adaptive, 60.3% as perfective, and 4.1% was categorized as other. We refer to this result as “LST.” We contrast this survey-based result with our empirical results from the analysis of data for the repeate...

Linear consecutive-k-out-of-n: F systems are considered. It is assumed that the components are independent and the component failure times follow an exponential distribution with identical failure rate. It is also assumed that there are only two component states (working and failed) and we can know the component state at any time. If there is at least one minimal cut set consisting of one worki...

Z. Popović, L. Lazarević, University of Belgrade, Faculty of Civil Engineering, Belgrade, Serbia V. Radović, University of Montenegro, Faculty of Civil Engineering in Podgorica, Montenegro V. Vukadinović, Serbian Railways, Belgrade, Serbia G. Tepić, University of Novi Sad, Faculty of Technical Sciences, Novi Sad, Serbia Rail defects due to rolling contact fatigue (RCF) threaten the traffi c saf...

The paper develops integrated production, inventory and maintenance models for a deteriorating production system in which the production facility may not only shift from an ‘in-control’ state to an ‘out-of-control’ state but also may break down at any random point in time during a production run. In case of machine breakdown, production of the interrupted lot is aborted and a new production lot...

In the software development life cycle, maintenance is the most costly activity because it requires more effort compared to other activities. To reduce the cost of software maintenance, it is essential to predict software maintainability during the early phases of software development. As a consequence of early estimation, further corrective and preventive actions can be performed more efficien...

Automated condition monitoring of active components of a system can improve the cost-ef®ciency of preventive and corrective maintenance and the availability of the production system. The validity, reliability and correct interpretation of the signals obtained from the condition monitoring instrumentation is important for the realisation of the potential bene®ts. The utilisation of experts in th...

The economic and political realities of the 1990s forced managers to reverse long-standing organizational cultures in order to reduce costs and energy expenditures in their organisations. For instance, these can be achieved, with respect to maintenance, by replacing a reactive repair-focused attitude by a proactive reliability-focused culture. Thereby far less (i) human effort is expended and (...

Number: 015-0565 Abstract Title: An integrated model for maintenance planning, process qualityTitle: An integrated model for maintenance planning, process quality control and production scheduling Authors Information: 1. Divya Pandey Research Scholar Department of Mechanical Engineering Indian Institute of Technology Delhi, (IIT Delhi) Hauz Khas, New Delhi India-110016 * Corresponding Author e-...