Cloud Computing, the long-held dream of computing as a utility, has the potential to transform a large part of the IT industry, making software even more attractive as a service and shaping the way IT hardware is designed and purchased. Virtualization technology forms a key concept for new cloud computing architectures. The data centers are used to provide cloud services burdening a significant...

In this module we present an overview of an electrical power system. The electrical power system is a network of interconnected components which generate electricity by converting different forms of energy, (thermal, hydro, and nuclear are the most common forms of energy converted) to electrical energy; and transmit the electrical energy to load centers to be used by the consumer. The system co...

Although society’s electrical needs are largely continuous, clouds and darkness dictate that photovoltaic solar cells have an intermittent output. A photoelectrochemical solar cell (PEC) can generate not only electrical but also electrochemical energy and provide the basis for a system with an energy-storage component (PECS). Sufficientlyž energetic inQ1 solation incident on semiconductors can ...

In this brief note, we demonstrate a generalised energy equipartition theorem for generic electrical circuit with Johnson-Nyquist (thermal) noise. From quantum mechanical considerations, the thermal modes have an distribution dictated by Planck's law. For resistive some inductance, it is shown that real part of admittance proportional to probability function which modulates contributions system...

This paper presents the design and evaluation of a novel permanent magnet (PM) energy harvesting system for scavenging electrical energy from ambient vibrations. A two-phase tubular linear PM vibration energy harvester consisting of a mover attached with permanent magnets and a slotted stator with built-in two-phase electromagnetic coils is proposed to convert vibrational kinetic energy into el...

Dielectric capacitors are particularly suitable to store the electrical energy of a fast-changing nature. Here, we present review recent applications first principles and first-principles-based effective Hamiltonian approaches study storage in ferroelectrics, lead-free antiferroelectrics, relaxor nitride semiconductors. Specifically, these used investigate density efficiency perovskite BaTiO 3 ...