Research on solar energy systems and materials has yielded promising opportunities for sustainable energy solutions, which do not only consider environmental issues but also allow aesthetic design possibilities. New requirements regarding the energy efficiency performance of buildings gave the...

Energy is always the important material for economic growth and social development. A new index of energy efficiency called total factor energy efficiency (TFEE) consists of energy, capital, labor and other input that produce GDP as output. TFEE index is accounted by DEA through multiple...

There is broad consensus among economists that regions' competitiveness heavily relies on their ability to produce innovative goods and services (Baumol 1967, Romer 1990, Grossman and Helpman 1991, Barro and Sala-i-Martin 1997, Los and Verspagen 2006). Main drivers of innovation include, but are...