The process scheduling aims to arrange CPU time to multiple processes for providing users with more efficient throughput. Except the class of process set by user, conventional operating systems have applied the equivalent scheduling policy to every process. Moreover, if the scheduling policy is once determined, it is unable to change without resetting the operating system which takes much time....

InFocus is a worldwide leader in the digital display market. Despite its success in sales, the company posted a net loss in profit in year 2005. The major reasons are its high operating cost and high inventory level. After reviewing its reverse logistics system, we found that current policy to process the returned product does not reap the maximum amount of profit from returns. We proposed to a...

Stochastic dynamic programming models are attractive for multireservoir control problems because they allow non-linear features to be incorporated and changes in hydrological conditions to be modelled as Markov processes. However with the exception of the simplest cases, these models are computationally intractable because of the high dimension of the state and action spaces involved. This pape...

The present work analyzes the interaction between antitrust policy and intellectual property protection, with particular reference to the cases of refusal to supply, when it concerns ideas or inventions protected by an IP right. For this purpose, the paper preliminarily discusses the governing principles of antitrust policy on abuse of dominance and refusal to deal, as they have been implemente...

This paper presents a genetic algorithm GA model for obtaining an optimal operating policy and optimal crop water allocations from an irrigation reservoir. The objective is to maximize the sum of the relative yields from all crops in the irrigated area. The model takes into account reservoir inflow, rainfall on the irrigated area, intraseasonal competition for water among multiple crops, the so...

Assigning products to and retrieving them from proper storage locations in a unit-load warehouse are crucial in minimizing its operating cost. The problem becomes intractable when the warehouse faces uncertain demand in a dynamic setting. We assume a factor-based demand model in which demand for each product in each period is affinely dependent on some uncertain factors. The distributions of th...

A safety policy defines the set of rules that governs the safe interaction of agents operating together as part of a system of systems (SoS). Agent autonomy can give rise to unpredictable, and potentially undesirable, emergent behaviour. Deriving rules of safety policy requires an understanding of the capabilities of an agent as well as how its actions affect the environment and consequently th...

This paper describes the implementation of a system to deliver Quality of Service for IP flows using a DiffServ-like packet marking mechanism. The system uses an unmodified commodity operating system (Windows NT), and a policy daemon is employed to implement arbitrary policies for QoS via a scripting mechanism. By interposing an agent in the protocol stack used by the application runtime system...

We consider the optimal control problem of certain batch service queueing systems with compound Poisson arrivals and linear holding costs. The control problem involves the determination of the epochs at which the service is initiated as well as the sizes of the batches served. The service times are assumed to be independent and identically distributed, however, with a general distribution. A qu...

Developing access control extensions for operating systems is an expensive and time-consuming task. Mechanisms available for access control extension lag behind industry standard extension solutions for file systems, process schedulers, and device drivers, and suffer from a number of serious flaws in modern multi-processor, multi-threaded kernels. In this paper, we explore the limitations of cu...