In mobile communications age, environment changes rapidly, the requirements change is the software project must face challenge. Able to overcome the impact of requirements change, software development risk can be effectively decreased. In order to reduce software requirements change risk, the paper investigates the major software development models and recommends the adaptable requirements chan...

This paper proposes a power-based networkconstrained unit commitment (UC) model as an alternative to the traditional deterministic UCs to deal with wind generation uncertainty. The formulation draws a clear distinction between power-capacity and ramp-capability reserves to deal with wind production uncertainty. These power and ramp requirements can be obtained from wind forecast information. Th...

Software maintenance is one of the main quality characteristics of the software product. The maintainability of a system is a measure of the ability of the system to undergo maintenance or to return to normal operation after a failure. In this paper, a new model to improve the maintainability of object-oriented software has been proposed. The proposed model is based on newer versions of softwar...

Reliability analysis of mechatronic systems is a recent field and a dynamic branch of research. It is addressed whenever there is a need for reliable, available, and safe systems. The studies of reliability must be conducted earlier during the design phase, in order to reduce costs and the number of prototypes required in the validation of the system. The process of reliability is then deployed...

The development of Open Source Software (OSS) is fundamentally different from the proprietary software. In the OSS development scenario a single developer or group of developers writes the source code for the first version of the software and make it freely available over the internet. Then other developers are invited to contribute to the existing code for its next release. Making the source c...

Much of the emphasis in identifying a software maintenance project’s technical debt involves analysis of the code to be maintained. Our recent analysis of the sources of software maintenance cost have identified the major sources of technical debt for non-developer maintenance organizations to originate from non-technical acquisition and development decisions and practices. As a way of identify...

Today’s society is characterised by the ubiquitousness of hardware and software systems on which we rely on day in, day out. They reach from transportation systems like cars, trains and planes over medical devices at a hospital to nuclear power plants. Moreover, we can observe a trend of automation and data exchange in today’s society and economy, including among others the integration of cyber...

in order to perform preventive maintenance (pm), two approaches have evolved in the literature. the traditional approach is based on the use of statistical and reliability analysis of equipment failure. under statistical-reliability (s-r)-based pm, the objective of achieving the minimum total cost is pursued by establishing fixed pm intervals, which are statistically optimal, at which to replac...

Hearing loss was the second-most common illness reported to the Mine Safety and Health Administration (MSHA) in 2009. Furthermore, between 2000 and 2010, 30% of all noise-related injury complaints reported to MSHA were for coal preparation plant employees. Previous National Institute for Occupational Safety and Health (NIOSH) studies have shown that vibrating screens are key noise sources to ad...