Phase change materials are substances that absorb and release thermal energy (heat) during the process of melting and freezing  at defined temperatures . They are called “phase change” materials because they  transition from one of the two fundamental states of matter – solid and liquid – to the other  during …

Cloud computing has burst recently into technology and business scene promising great technical and economic advantages, like offering On-demand provisioning of computer services, improved flexibility and scalability as well as reducing costs. Another attractive point of the cloud is its ability to enable a mobile workforce, which brings enhanced flexibility …

In an increasingly globalised and interconnected world it has become simple for people and goods to cross borders and so for terrorists. America’s borders and ports are busy places, with tens of millions of cargo containers and hundreds of millions of lawful travelers entering the country each year, while tens …