The area of cluster-level energy management has attracted significant research attention over the past few years. One class of techniques to reduce the energy consumption of clusters is to selectively power down nodes during periods of low utilization to increase energy efficiency. One can think of a number of ways of selectively powering down nodes, each with varying impact on the workload res...

This paper presents a holistic view of energy management in sensor networks. We first discuss hardware designs that support the life cycle of energy, namely: (i) energy harvesting, (ii) energy storage and (iii) energy consumption and control. Then, we discuss individual software designs that manage energy consumption in sensor networks. These energy-aware designs include media access control, r...

Performance of building Energy Management Systems (EMS) has been controversial in several studies due to lack of measured energy savings, changes in building use or operation, other changes that simultaneously affect building energy use, equipment malfunction, or weather normalization. This study evaluated energy savings in 20 buildings that have EMS installed to control HVAC. The buildings wer...

Home Energy Management (HEM) describes a class of technologies including sensors, smart thermostats, and feedback devices seeking to manage residential energy consumption profiles to reduce peak electric demand and consumers’ electric bills. A growing number of HEM products and companies have emerged over the past decade, ranging from basic energy displays to whole-home control systems and smar...

The Japanese government’s setting of mediumterm targets for cutting greenhouse gas emissions (cutting emissions by 25% from 1990 levels by 2020), revision of the “Law concerning the rational use of energy” (energy saving law), the international standard (ISO 50001) concerning energy management to be issued this year, and the like are measures that address the urgent need to prevent global warmi...

The paper outlines energy management concepts and the smart grid evolution. The necessity of considering energy management as a crucial innovation in load supplying to permit a more powerful penetration of renewable energy usage at the building and city level and to perform energy savings and CO2 emissions reduction is pointed out. The driving factors to enhance the current power distribution a...

Caches improve performance by reducing the effective memory access latency, but consume significant static and dynamic power. Just as caches cannot be simultaneously large and fast, they also cannot be both large and low power. Smaller caches consume less static power, but can degrade performance and increase dynamic power due to more misses. There is thus a tradeoff between performance and pow...

Energy consumption share in construction part and dependent industries is about 40 percent of total energy consuming in Iran which is significant compared to other industries such as transportation, agriculture and therefore is of important. As energy consumption reduction and material durability improvement leads to cost reduction from one hand and environment pollution reduction on the othe...