The optimal maintenance scheduling of systems with degrading components is highly coupled with the design of the system and various uncertainties associated with the system, including the operating conditions, the interaction of different degradation profiles of various system components, and the ability to measure and predict degradation using prognostics and health management (PHM) technologi...

the main objective of the present survey is to conduct a comparative analysis of the challenges of the performance evaluation system in two private and public sectors and their impact on effectiveness of human resources management practices. this survey was conducted using the field-descriptive method. the historical study method was used to collect theoretical subjects and the field study meth...

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...

To choose their actions, reasoning programs must be able to make assumptions and subsequently revise their beliefs when discoveries contradict these assumptions. The Truth Maintenance System (TMs) is a problem solver subsystem for performing these functions by recording and maintaining the reasons for program beliefs. Such recorded reasons are useful in constructing explanations of program acti...

Some results of a recent European Project for specification, design and evaluation of Distributed Real and Virtual Learning Environments for Mechatronics and Tele-service (DERIVE) will be presented. The project aimed at the development and evaluation of a new kind of multi-perspective human-machine system. It was motivated from industrial practice and vocational education in the emerging profes...

This paper reports on recent work and directions in modern software ar-chitectures and their formal models with respect to software maintenance. The focus on maintenance attacks the most costly and frustrating aspect in dealing with large-scale software systems: keeping them up-to-date and responsive to user needs in changing environments. We employ mediators, autonomous modules which create in...