The world is looking towards producing products which consume less power without compromising on quality of life. The increase in use of refrigeration and air conditioning appliances are contributing to global warming. The world wide temperatures are shooting up at an increasing rate. This paper presents a design of roll bond evaporator as the heat exchanger to provide cooling in room air condi...

In order to improve the energy saving performance of cooperative communication, a novel power allocation solution, named Half Transmission Power Allocation Solution (HTPAS), is proposed in this paper. In this solution, the transmission power of the relay for forwarding the packet is half of the transmission power of the source. Based on the energy efficiency analysis, HTPAS outperforms the equa...

The growing awareness towards energy efficient cellular networks has paved way for new technologies in designing green cellular networks. According to technical analysts, the base stations are the most energy intensive part of a typical cellular network. Saving power in base stations is therefore the primary focus in green cellular networks. The main goal of designing green base stations is for...

In wireless local area networks (WLANs), power conservation for mobile devices is considered as one of the most important issues because it effectively prolongs the battery life of mobile devices. The IEEE 802.11 standard specifies a power-saving mode that allows mobile nodes to adaptively operate in sleep and wake modes to reduce the overall energy consumption. In the IEEE 802.11 power-saving ...

Power saving and query processing are two major concerns in a wireless sensor network. Each of these two issues has been intensively studied separately in the literature. In this work, we are interested in linking the asynchronous power-saving protocol and the continuous query-processing problem together. A cross-layer solution is proposed. On the MAC layer, we propose to use the grid-quorum sy...

Some general features of statistical multi-agent economic models are reviewed, with particular attention to the dependence of the equilibrium wealth distribution on the agents’ saving propensities. It is shown that in a finite system of agents with a continuous saving propensity distribution a power-law tail with Pareto exponent a 1⁄4 1 can appear also when agents do not have saving propensitie...

According to PSM, each station must announce traffic before its transmission. PSM requires for this purpose a rather large handshaking period to complete the required announcements. This functional behavior puts a heavy constraint on the size of the announcement period and consequently on throughput, delay and more importantly on power consumption. This paper proposes an optimization of some fu...

A mobile computer operates on a finite battery power that represents one of the greatest limitation to the utility of portable computers [2,6]. Projections on progress in battery technology show that only small improvements in the battery capacity are expected in next future [16]. If the battery capacity cannot be improved, it is vital that power utilization is managed efficiently by identifyin...

Achieving an energy-efficiency control and simultaneously satisfying a performance guarantee have become critical issues for cloud providers. The existing work is power saving in Virtual Machine the potential performances overheads of server consolidation were evaluated. In this paper, three power-saving policies are implemented in cloud systems to mitigate server idle power. Three power-saving...

The integration of the wireless LAN technology in mobile devices such as cellular phones, PDAs or laptops has become a user need due to its popularity in providing high speed wireless Internet access at a low cost. Such devices though should meet users’ expectations with regard to QoS, e.g., guarantee a reasonable voice quality when VoIP is used, and power saving efficiency, e.g., standby and c...