Pessimistic quorum-based data replication strategies generally strive for maximizing operation availabilities while adhering to a strict consistency notion. Unfortunately, their operation availabilities are strictly upper-bounded. Probabilistically relaxing the consistency notion permits to overcome this bound, introducing probabilistic data replication strategies that allow for a data consiste...

Distributed multimedia applications require negotiation of quality of service (QoS) and resource reservation for distributed application parts and communication links. Negotiation of QoS is a balancing process between the QoS specified by a client, the resource availabilities of the distributed system and the functional capabilities of the distributed application. Negotiation requires applicati...

As a general branch of project scheduling problems, resource investment problem (RIP) considers resource availabilities as decision variables to determine a level of employed resources minimizing the costs of the project. In addition to costs (cash outflows), researchers in the later extensions of the RIP took payments (cash inflows) received from clients into account and used the net present v...

This paper discusses the problem of allocation of constrained renewable resource to splittable activities of a single project. If the activities of stochastic projects can be split, these projects may be completed in shorter time when the available resource is constrained. It is assumed that the resource amount required to accom-plish each activity is a discrete quantity and deterministic. The ...

To meet the challenge of dramatically market, manufacturing process requires the high production efficiency and the stability of the machining accuracy. Thus availability is the one of crucial measurements of complex equipments. This study addresses the problem of evaluating the performance of equipment which subject to both wear-out failures and random failures. Moreover, the different degrada...

In this paper, we extend the classical result by Huang, Kintala, Kolettis and Fulton (1995), and in addition propose a modified stochastic model to determine the software rejuvenation schedule. More precisely, the software rejuvenation models are formulated via the semi-Markov processes, and the optimal software rejuvenation schedules which maximize the system availabilities are derived analyti...

We consider capacity maximization algorithms for wireless networks with changing availabilities of spectrum. There are n senderreceiver pairs (called links) and k channels. We consider an iterative round-based scenario, where in each round the set of channels available to each link changes. Each link independently decides about access to one available channel in order to implement a successful ...

The trending integrations of Battery Energy Storage System (BESS, stationary battery) and Electric Vehicles (EV, mobile battery) to distribution grids call for advanced Demand Side Management (DSM) technique that addresses the scalability concerns of the system and stochastic availabilities of EVs. Towards this goal, a stochastic DSM is proposed to capture the uncertainties in EVs. Numerical ap...

Comprehensive BCM plan testing for complex information systems is difficult and expensive, if not infeasible. This paper suggests that a simulator could be employed to ameliorate these problems. A general model for such a BCM simulator is presented, and the implementation of a prototype simulator is described. The simulator reacts to system disturbances by seeking alternative configurations pro...