Energy efficient design for disk devices has become a very important issue, because ever increasing need for data storage systems significantly increases the power budget in the disk array. Most research on power management in disk devices focuses on the traditional way of stopping disk rotation. In this paper, we suggest a new approach in which the energy consumption can be reduced without sto...

Cellular digital packet data (CDPD) networks borrow idle radio channels from advanced mobile phone standard (AMPS) cellular networks to send packet data traffic. We explore the amount of unused AMPS capacity available to parasitic data networks such as CDPD. Due to trunking inefficiencies, a relatively large amount of spare AMPS airlink capacity can be found. In addition, the periods of time AM...

The intake air control system of a gasoline engine is a typical nonlinear system, and included among the adverse factors that always induce poor idle-speed control stability are dead time and disturbances in the intake air control process. In this paper, to improve the responsiveness when idling with regard to disturbances, a mean-value engine model (MVEM) with dead time was constructed as the ...

With the continuous increase of processing power, the graphic hardware – also called Graphic Processor Unit (GPU) – is naturally assuming most part of the rendering pipeline, leaving the Central Processor Unit (CPU) with more idle time. In order to take advantage of this when rendering relief textures, the present work proposes two approaches for the mapping of relief textures. Both methods are...

One of the main sources of energy waste in Wireless Sensor Networks (WSN) is idle listening, i.e., nodes consuming energy to sample an idle channel. In this paper, we present a dynamic sleep time control method exploiting known traffic statistics to sample the channel more frequently when it is likely to have traffic and less frequently when it is not. When such information is not a priori avai...

In this paper we investigate whether partial reconfiguration can be used to reduce FPGA energy consumption. The core idea is that within a hardware design there are a number of independent circuits, and some can be idle for long periods of time. Idle circuits still consume power though, especially through clock oscillation and static leakage. Using partial reconfiguration we can replace these c...

The Sprite operating system allows executing processes to be moved between hosts at any time. We use this process migration mechanism to offload work onto idle machines, and also to evict migrated processes when idle workstations are reclaimed by their owners. Sprite's migration mechanism provides a high degree of transparency both for migrated processes and for users. Idle machines are identif...