This paper investigates the performance of deteriorating systems maintained under structural constraints using a simulation approach. Three maintenance polices are investigated, and the performance of the system is measured by the steady-state system availability. The best maintenance policy is chosen with the highest steady-state availability. Unlike those widely used methods that treat such s...

It is well-known that uncontrolled change to software can lead to increasing evolution costs caused by deteriorating structure and compromised system qualities. For complex systems, the need to carefully manage system evolution is critical. In this paper we outline an approach to managing evolution of object-oriented (OO) software. The approach is based on a goal-directed, cyclic process, in wh...

This paper discusses combined position and force control of telepresence systems with force feedback and time delay. Standard architectures use velocity/force control and well known passivity arguments. Disadvantageously, then the positions of the Human System Interface (HSI) and the teleoperator diverge in presence of disturbances, deteriorating transparency. In this paper a new method for imp...

In this paper, we consider inventory control problems for deteriorating items with maximum serviceable lifetime under mixed sales situation, both of the demand and deterioration rate are depending on time. A model is presented to formulate process that deteriorated sold consumers together items, where penalty cost products included. From literature search, study one first researches joint inspe...

in this paper, we develop an inventory model with delay in payments for deteriorating items. in our model, retailer who purchases the items enjoys a fixed credit period offered by his/her supplier and, in turn, also offers a credit period to his/her customers in order to promote the market competition. the demand is assumed to be linear function of the retailer's current-stock level. the effect...

Shifting patterns of temporal fluctuations have been found to signal critical transitions in a variety of systems, from ecological communities to human physiology. However, failure of these early warning signals in some systems calls for a better understanding of their limitations. In particular, little is known about the generality of early warning signals in different deteriorating environmen...

In this article, a mathematical model is proposed for the joint planning of maintenance policies and inventory control in deteriorating production system. A safety stock maintained to meet demand during conduction actions avoid shortages. The optimal improves productivity manufacturing system, process has two operational states including in-control out-of-control as well non-operational state, ...

This paper proposes a data-driven, condition-based maintenance framework (DCBM) for deteriorating equipment under the impact of varying environments and natural aging. The equipment's degradation status is determined by prognostic health monitoring method. Generally, data inspections are imperfect because uncertainties in process, which may prevent reliable evaluation system's deterioration. By...