spend much of their time idle, and various schemes have been proposed to use this idle time productively. We have used this approach to improve overall performance in storage systems. The most common approach is to off-load activity from busy periods to less-busy ones in order to improve system responsiveness. In addition, speculative work can be performed in idle periods in the hope that it wi...

This paper re-examines the Hotelling model of optimal nonrenewable resource extraction in light of stock effects and technological progress. We assume functional forms for cost and demand so that the solution to the Hotelling problem is a steady-state consistent with the empirical observation that the growth rates of market prices have remained zero over a long period of time. We use data on 14...

I investigate two versions of a differential Cournot oligopoly game with nonrenewable resource exploitation, in which each firm may either exploit its own private pool or exploit a common pool jointly with the rivals. Firms use a deterministic technology to invest in exploration activities. In both models, there emerges that (i) the individual exploration effort is higher when each firms has ex...

For my students I shall consider in detail distributions defined by the principal value and the finite part of divergent integrals. I shall also consider continuity properties of distributions defined by holomorphic functions.

Modern civilization is dependent upon fossil fuels, a nonrenewable energy source originally provided by the storage of solar energy. Fossil-fuel dependence has severe consequences, including energy security issues and greenhouse gas emissions. The consequences of fossil-fuel dependence could be avoided by fuel-producing artificial systems that mimic natural photosynthesis, directly converting s...

Introduction Hyperpolarized C MR has emerged as a powerful new imaging technique for monitoring metabolic processes in vivo. In this method, optimal data acquisition schemes are critical since the magnetization achieved through hyperpolarization undergoes nonrenewable diminution caused by repetitive RF excitations and T1 relaxation of magnetization to its thermal equilibrium. In this project, a...

Introduction South Africa has enjoyed considerable success in establishing critical upstream industries based on its natural resource advantages. The broadening of these successes was muted, according to Chang (1998), by an industrial policy under apartheid burdened with objectives that ultimately undermined the development of the domestic economy. South Africa has squandered both the advantage...

Wireless Sensor Networks (WSNs) consist of large number of tiny sensor nodes, all of which have sensing capabilities. As sensor nodes are typically powered by nonrenewable batteries, energy efficiency is a critical factor in wireless sensor networks. Sensor nodes want to continue their lives with limited energy. Each of them using its own energy in minumum level and they aims to provide maximum...