The lightweight , long-lasting, high-performance attributes of cellular phones and laptop computers, among other equally impressive portable devices currently in the marketplace, are responsible for igniting the overwhelming growth of the battery-powered electronics industry. The demand for smaller and longer lasting solutions, in fact, is only increasing, and key to this success is the battery...

This paper describes a framework that serves as a reference for classifying user interfaces supporting multiple targets, or multiple contexts of use in the field of context-aware computing. In this framework, a context of use is decomposed into three facets: the end users of the interactive system, the hardware and software computing platform with which the users have to carry out their interac...

In this paper a new algorithm based on phasor measurements for estimating the Thévenin Equivalent (TE) and system inertia constant is proposed. The method estimates the network TE seen from a generator terminal and equivalent system inertia constant by means of phasor data that is available at Phasor Data Concentrator (PDC) center. It is shown that the parameters of the TE could be estimated at...

Power systems are becoming more and complicated. Traditional simulation tools such as transient stability programs electromagnetic transients (EMT) unable to meet the accuracy or efficiency requirements. This paper proposes a shifted frequency-based EMT (SFEMT) in symmetrical component-domain (abbreviated SCSFEMT simulation) for three-phase transmission system. The sequence-decoupled modeling p...