Wireless Sensor Networks (WSNs) consist of several sensor nodes equipped with limited power sources that sense environments event and transmit data to the sink node. WSNs have many constraints including energy, redundant data, and many-to-one flows. Data aggregation is one of the most important issues for achieving energy-efficiency in wireless sensor networks. Sensor nodes in the surrounding r...

Reducing household energy usage is a priority for improving the resiliency and stability of the power grid and decreasing the negative impact of energy consumption on the environment and public health. Relevant and timely feedback about the power consumption of specific appliances can help household residents reduce their energy demand. Given only a total energy reading, such as that collected ...

In this paper, we propose a new hybrid evolutionary algorithm based on Particle Swarm Optimization (PSO) and on Simulated Annealing (SA) for reducing memory energy consumption in embedded systems. Our hybrid algorithm outperforms the Tabu Search (TS) approach. In fact, nearly from 76% up to 98% less energy consumption is recorded.

This paper investigates impacts of possible chances in energy policy and consumption behavior on optimal energy management and feasibility study of a hybrid energy system. The study was performed on a remote area near Esfarjan, a village located in Shahreza, Iran. In the main scenario, the current energy policy is applied while the consumption behavior of customers is studied by means of an inc...

Reducing their energy consumption has become an important concern for many people lately. A necessary step to save energy is to raise consumption awareness, that is: to realize how much electricity is consumed by household appliances. We propose a system that uses and extends intelligent power outlets called Plogg, which contain sensor nodes to wirelessly measure the energy consumption of vario...

In order to develop a software that aims at helping reducing the electrical energy consumption in the domestic sector of the European Union, it becomes necessary to model the electrical energy consumption of the main home appliances as a function of their features such as energy class, capacity and operating set-ups. This paper focuses on the modeling of electrical energy consumption of the was...

Car body lightening and crashworthiness are two important objectives of car design. Due to their excellent performance, composite materials are extensively used in the car industries. In addition, reducing the weight of vehicle is effective in decreasing the fuel consumption. Hat shape energy absorber is used in car’s doors for side impact protection. The aim of these numerical models and expe...

Domestic households account for a significant portion of energy consumption and carbon emissions in the United Kingdom. Gains in energy and resource efficiency are undermined by the continuing rise in consumption. A multiutility service company (MUSCo) could enable households to make efficiency improvements through energy technologies and demand management, thus reducing overall consumption. We...