Autonomous mobile objects in CORBA-based distributed systems

Abstract

This paper presents the concept and implementation of "Hornet", a MASIF-compliant mobile agent system based on the CORBAScript scripting language, thus completely integrated in CORBA environment. Common problems related to standard implementations of CORBA-based distributed applications are illustrated and benefits of agent-based solutions outlined. An overview of CORBA-based mobile agent system architecture is given addressing the specific implementation issues. Two developed example applications are described, consequences of introducing mobile agents in the CORBA environment discussed and future work directions explained. We feel that introduction of tightly CORBA integrated scrip-based object mobility provides a new perspective to developers and researchers of distributed object systems.

An integrated life-cycle maintenance modeling and simulation framework for aero engine fleet management decision support

“…The method is limited to analyzing airline-influenced factors that can be made by the operator such as engine thrust setting, shop visit schedule and work scope, maintenance philosophy. Stranjak et al 8 developed a multi-agent based simulator for aero engine overhaul prediction and scheduling, which uses negotiation strategies to tackle the multidimensional scheduling optimization problem by trading of repair costs, capacity of overhaul bases as well as in-service unforeseen events. Razavi et al 9 developed a decision making support tool using discrete event simulations to assess different aircraft engine maintenance policies, and from the analysis of the simulation output arrive at an optimum policy.…”

“…Thus, a good understanding of the problem is required to accurately predict shop visit events and spare engine planning for efficient fleet management. 8 Painter et al 12 use Arena to simulate fleets of engines and estimate the life-cycle costs effects of maintenance strategy influencing key performance indicators like time-on-wing, cost per flight hour, and the fleet availability. Muriel et al 3 proposed a simulation tool for the engine fleet spare inventory management, which utilizes sensor readings from in-service units for the forecasting and inventory control of the spare parts necessary for maintaining the fleet availability.…”