Efficient and fair use of buffer space in ATM switch is essential to gain high throughput and low cell-loss performance from the network. A shared buffer architecture associated with threshold based virtual partition among output ports is proposed. Thresholds are updated based on trajfic characteristics on each outgoing link, so as to adapt to traf$c loads. System behavior under varying trafJic...

In a volunteer-based grid computing environment, one big challenge for effective job allocation is resource availability. As resources in this environment are volatile and may become frequently unavailable, matching guest jobs to suitable resources is very important. To improve scheduling performance in such an unreliable computing environment, especially in terms of avoiding job completion fai...

In this work, the effectiveness of preventive maintenance scheduling (PMS) decisions was reported based on a techno-economic model that reflects cost objective function for ship maintenance activities. With a potential to impact on both transportation businesses and users of transportation services, the model provides an alternative to the combined classical literature problems of spare-parts i...

This article describes the ExpertCop tutorial system. ExpertCop is a geosimulator of criminal dynamics in urban environments that aims to train police officers in the activity of preventive policing allocation. ExpertCop intends to i) help students comprehend the task of resources allocation and identify the variables involved; ii) induce students to reflect about their actions related to resou...

On-chip interconnection networks (OCINs) have emerged as a modular and scalable solution for wire delay constraints in deep submicron VLSI design. OCIN research has shown that the design of buffers in the router influences the energy consumption, area overhead, and overall performance of the network. In this paper, we propose a low-power low-area OCIN architecture by reducing the number of buff...

The work described in this paper attempts to validate the implicit assumption in traditional flow shop scheduling research that there is a buffer of infinite capacity between any two adjacent machines. The modified NEH (Nawaz, Encore and Ham) algorithm is used to generate an initial permutation schedule which is then improved by tabu search. For any given sequence, a limited equal buffer size i...

In general, distributed scheduling problem focuses on simultaneously solving two issues: (i) allocation of jobs to suitable factories and (ii) determination of the corresponding production scheduling in each factory. The objective of this approach is to maximize the system efficiency by finding an optimal planning for a better collaboration among various processes. This makes distributed schedu...

General preventive maintenance model for the components of a system, which improves the reliability to ‘as good as new,’ was used to optimize the maintenance cost. The cost function of a maintenance policy was minimized under given availability constraint. On the other hand, in order to ensure appropriate reliability and availability, the development of the optimal maintenanc...

Production planning and maintenance are two important problems in manufacturing systems. Despite the relationship exists between these two problems due to sudden failures and production capacity occupied by maintenance activities, each of these problems planned separately and as a result program and model efficiencies reduce in the real world. The aim of integrated production and maintena...