They find both linear and geometric models of process of little interest to their concerns, although considerations related to these models, particularly those of entropy, redundancy, and feedback, have provided significant and productive concepts for most students of communication.
Scientists contacted by the Nature Index listed climate change and its impact (particularly on ecology and corresponding carbon circulation), the mechanism of environmental pollution, geological changes, and oceanology studies as the most significant and productive areas of research in recent years.
Nevertheless, the results will provide an initial empirical basis to evaluate reproducibility and may help guide the broader discussion about reproducibility toward areas of significant challenge, productive areas for further inquiry, and possible interventions for improvement.
Need to do something productive, Significant, Meaningful, Gratifying.
Yet they still represent a significant loss of productive human resources for the economy.
Methane, a powerful greenhouse gas, is considered to be a significant loss of productive potential in ruminants.
The results show that the stringency of environmental regulations is a significant determinant of productive efficiency with respect to pollutant emissions as well as fuel use.
At this time, native forests and coastal woodlands surrounding the sites under investigation had been transformed into culturally significant and economically productive treescapes.
For many years, there were significant reserves in productive wells, the last of which was drilled in the 1970s.
This challenge will not be met through increases in crop yields alone, and the potential for significant expansion of productive farmland is limited.
