This paper mainly investigates the environmental and economic impacts of worldwide use of electric vehicles. It can be concluded that governments have good reason to promote the use of electric vehicles. First, the global vehicles population is evaluated with the help of grey forecasting model and the amount of oil saving is estimated through approximate calculation. After that, based on the ga...

In this paper, we propose a novel power saving scheme for relay nodes, equipped with multiple wireless network interface cards (WNICs), in IEEE 802.11 infrastructure networks. While most of recent studies have focused on power saving of end stations, the power saving of relay nodes can become even more critical when the relay nodes operate on battery power. When a relay node is equipped with mu...

As demand for mobile devices increases, prolonging battery life has been a focus of mobile device manufacturers. While manufactures support a partial self-refresh capability for MSDRAMs (Mobile SDRAM), most operating systems do not include this feature due to the complexity of the memory management. Utilizing this capability correctly could potentially reduce the amount of power consumed by MSD...

The installation of heat pumps in different chemical processes is considered as an important and prospective approach for energy saving. Various crystallization processes such as counter current crystallization, direct and indirect contact crystallization, evaporative crystallization and fractional crystallization from melts are used to be a promising chemical processes where heat pumps can be ...

Different methods of urban sewage sludge energy recovery such as burning, gasification, pyrolysis and digestion based on the net energy production efficiency, advantages and disadvantages and complexity of these processes have been investigated in this article. The best method for energy production from sludge was selected among different methods according to energy and the amount of the greenh...

We focus on energy saving in 802.11-based WLANs. Previous work has shown that, on the one hand, 802.11 wireless interfaces consume a significant amount of energy, on the other hand the use of current power management schemes can severely degrade the QoS performance of several Internet-based applications. Furthermore, the energy spent by wireless devices may even increase when the the standard 8...

Providing resource for virtual services in cloud computing which requires saving the resource and minimizing the amount of energy consumption is critical. In this study, we propose the resource model and linear programming formulation for multi-dimensional resource allocation problem. Based on the simulated annealing algorithm, RASA algorithms were designed to solve and evaluate through Cloudsi...

Increasing energy efficiency and exploiting energy saving potential are two important practices that can help to ensure future energy security in China. This paper proposes a new total factor energy efficiency indicator, based on the directional meta-frontier data envelopment analysis (DEA) approach, to account for the heterogeneity of production technology among provinces in China. This indica...

CONSIDER THIS IRONY OF MODERN LIFE: IN A MEDICAL CRISIS, EMERGENCY physicians would have an easier time accessing a patient’s bank account using his or her automatic teller machine card than they would finding critical medical history using his or her medical insurance card. Medical records, including crucial electrocardiograms, drug allergies, or medical conditions, are typically stored on pap...