Software maintenance constitutes a major phase of the software life cycle. Studies indicate that software maintenance is responsible for a significant percentage of a system’s overall cost and effort. The software engineering community has identified four major types of software maintenance, namely, corrective, perfective, adaptive, and preventive maintenance. Software maintenance can be seen f...

Many maintenance approaches have been developed and applied successfully in a variety of sectors such as aviation and nuclear industries over the years. Some of those have also been employed in the maritime industry such as condition based maintenance; however choosing the best maintenance approach has always been a big challenge due to the involvement of many attributes and alternatives which ...

A sewer system is an important infrastructure of every settlement. a set construction facilities used for the quick removal wastewater from humans’ immediate environment and its transport to treatment plant or direct discharge into appropriate recipient. In order perform purpose properly, proper maintenance required. Maintenance very demanding since mostly underground which makes it difficult b...

This paper considers the impact of random machine breakdowns on the classical Economic Production Quantity (EPQ) model for a product subject to exponential decay and under a no-resumption (NR) inventory control policy. A product is manufactured in batches on a machine that is subject to random breakdowns in order to meet a constant demand over an infinite planning horizon. The product is assume...

The approach of using only English when teaching English as prescribed by the seventh curriculum has become a major issue in the debate over how to improve Korean students' communicative abilities in the L2. Discussions have not always been pleasant about the need to shake up the education system by different means, including using much more classroom English. (Fracas over Education, 2001). Tha...

This paper deals with maintenance strategies with minimal repairs for single-unit repairable systems which are subject to competing and dependent failures due to degradation and traumatic shocks. The main aims are to study different approaches for making a minimal repair decision (i.e. time-based or condition-based) which is a possible corrective maintenance action under the occurrence of shock...

The use of mind maps as a method of building knowledge, planning, organizing activities and ideas can be seen in the literature related to ergonomics. The results of such use are relevant and its use in academic area found. However, regarding to its use in industrial environments, studies can't not be found. With this scenario, and based on the perception of the ergonomist about the importance ...

The use of the building is to support activities or as infrastructure for owners users in optimally carrying out their daily activities. expected be flexible following flow changes that occur later. This what underlies need maintenance In LPMP Dormitory building, have not been managed properly. order better, a management plan made on architectural and utility components building. Starting from ...

This research aims to analyse, evaluate and rank the maintenance strategy practised by train operating companies, specifically rolling stock team. A quantitative method was adopted for data collection. total of five companies were chosen participate in a survey that has been carefully designed. The first identified associated with through systematic literature reviews. Afterwards, six strategie...

The availability of a periodic inspection system under mixed maintenance policies is studied in this paper. To accommodate the characteristic multiple failure modes for complex systems, failures can be divided into two modes: hard and soft failure. When occurs, corresponding corrective will performed, taking random time perfect policy; contrast, if found, preventive imperfect policy. dynamic ag...