The energy consumption by ICT (Information and Communication Technology) equipment is rapidly increasing which causes a significant economic and environmental problem. At present, the network infrastructure is becoming a large portion of the energy footprint in ICT. Thus, the concept of energy efficient or green networking has been introduced. Now one of the main concerns of network industry is...

Operating Systems Techniques for Reducing Processor Energy Consumption

One of the main goals of 5G wireless telecommunication technology is improving energy efficiency, especially of remote sensors which should be able for example to transmit on average 1bit/s for 10 years from a single AAA battery. There will be discussed using modulation with nonuniform probability distribution of symbols for improving energy efficiency of transmission at cost of reduced through...

Increasing energy consumption in server consolidation environments leads to high maintenance costs for data centers. Main memory, no less than processor, is a major energy consumer in this environment. This paper proposes a problem of reducing memory energy consumption using virtual machine scheduling in multi-core systems. We prove that scheduling virtual machines to minimize the memory energy...

Reduction of energy consumption has played a significant role in industry. This paper describes a study on reducing energy consumption by machining process improvements. Methods of reducing energy consumption in a manufacturing line consisting of multiple machines are verified. First, to consolidate the processes, a series of horizontal machining centers are replaced with a 5axis machining cent...

A mobile ad-hoc network (MANET) consists of mobile nodes which cooperate in forwarding information in mobile ad-hoc network. In this paper we focus mainly on the end to end per packet energy consumption. We first find the destination address in the network, find all the possible paths to reach the destination, select the shortest path to send the information, calculate the energy required to se...

Building sector is contributing to the 36% of the C02 emissions in Europe, and consurning the 40% of final energy consurnption. In this context this paper presents a new approach developed under the ENCOURAGE project to carry out the user awareness. The proposed user awareness is based on a set of KPls, and done at two levels: energy mangers and university campus users. The KPfs are displayed t...

We can outperform the most powerful disk spin-down algorithm available by using a small non-volatile storage write-only cache to temporarily store hard disk write requests while a disk is spun-down. In our experiments, we use a USB thumb drive device as our non-volatile storage cache. By redirecting writes to a flash memory while a disk is spun-down we avoid costly hard disk cycle start-stop op...

the aim of this study was investigation the energy flow and global warming potential (gwp) of corn farm in gorgan city. for this purpose, data were collected from three conventional planting methods (spring planting, summer planting in wheat residue and summer planting without wheat residue) by using a face-to-face questionnaire performed with farmers in summer 2012. after the required data in ...