Thermal conductivity is a key parameter for evaluating wellbore heat losses which plays an important role in determining the efficiency of steam injection processes. In this study, an unsteady formation heat-transfer model was established and a cost-effective in situ method by using stochastic...

This paper aims to synthetically investigate invention profiles and uneven growth of technological knowledge in the emerging nano-energy field, based on patents data extracted from the Derwent Innovation Index (DII) database during the time period 1991–2012. The trend analysis shows that...

Many education institutes are planning to use virtual worlds to offer distance education programs and to reach potential students globally. However, the success of such programs depends on students’ willingness to use virtual worlds for learning continuously. Students’ learning...