We present a Variable Neighborhood Search heuristic for the rolling stock rescheduling problem. Rolling is needed when disruption leads to cancellations in timetable. In rescheduling, one must then assign duties, i.e., sequences of trips, available train units such way that both passenger comfort and operational performance are taken into account. For our heuristic, we introduce three neighborh...

Both service and manufacturing industries depend on the availability of expensive equipment to deliver their products. Examples of such equipment include aircraft, rolling stock and manufacturing equipment. When this equipment is not working, the primary processes of their owners come to an immediate stop. To reduce the downtime of equipment, companies stock critical components such that the eq...

human resource productivity is an important subject in theory and practice, so increase of productivity is the first priority in most of organizations. the main purpose of most organizations is creating value for their shareholders. so it is necessary to understand effect of human resource productivity in achieving this goal and find the obstacles. the purpose of this research is examining the ...

Seasickness or motion sickness (kinetosis) is not only an issue at sea, but on rails as well. Unlike vibration discomfort, no clear guidelines exist for assessing motion sickness. Recent developments such as tilting technology and increased passenger demands regarding comfort have led to higher requirements for rolling stock equipment and infrastructure. This article presents a tool for assessi...

This paper presents the first results of current product line engineering efforts at Alstom Transport. It describes the background that has led us to these efforts as well as the approach that we have adopted on Model-Based Systems Engineering (MBSE) and Product Line Engineering (PLE). We present a real-life application of MBSE and PLE that “goes beyond” SysML along with a quick overview of the...