The chapter provides the insight into software maintenance process, its features, actors, activities and results, with the emphasis on the importance and complexity of systems maintenance. The issues related to maintenance modeling, maintenance process evaluation and improvement are addressed. The chapter proposes a method for system maintenance modeling and analysis. Software maintenance proce...

We study the problem of scheduling maintenance services. Given is a set of m machines and integral cost-coefficients ai and bi for each machine i (1 6 i 6 m). Time is discretized into unit-length periods; in each period at most one machine can be serviced at a given service cost bi. The operating cost of machine i in a period equals ai times the number of periods since the last servicing of tha...

This paper describes the development of a computerized line maintenance simulation model for strategic manpower planning at Continental Airlines for one of their major maintenance stations at Newark airport. The simulation model provides guidelines to the development of enhanced staffing models and a better understanding of resource requirements on a daily basis. The proposed simulation model c...

This paper presents the steady state behavior and maintenance planning of the bleaching system in a paper plant. The paper plant comprises of various systems including feeding, chipping, digesting, washing, bleaching, screening, stock preparation and paper making, etc. One of the most important functionaries of a paper plant, on which quality of paper depends, is the bleaching system, where rem...

Recent work within the CBR community has studied more systematic means of interrelating different types of domain knowledge, tasks, and methods for building and maintaining CBR systems. This paper reviews work from the knowledge acquisition community, targeted at methodologies and tools for analysis, modeling, and maintenance of knowledge components. It is argued that the knowledge level is the...

This paper introduces a modular modeling approach for distributed production systems, considering production and maintenance processes synchronization. Thus, production job shop, preventive and curative specialized telemaintenance actions are studied together. Stochastic synchronized Petri nets are used for modeling. This tool was adapted to the tele/maintenance distributed case and to integrat...

Using traditional semantic data modeling, multi-level modeling can be achieved by representing objects in different abstraction hierarchies, namely classification, aggregation and generalization. This, however, leads to accidental complexity, complicating maintenance and extension. Several modeling techniques, like deep instantiation, powertypes and materialization, have been proposed to reduce...

Maintenance plays an essential role in a system’s life cycle. At the system level, the maintenance influences the reliability and availability of the system [3]. Achieving a high maintainability in the railway system requires a proper maintenance strategy. More maintenance means more life-cycle cost, while it may not lead to a dramatical improvement in the reliability. Hence, the performance of...