This increase was expected given the large increases in publications volumes in non-English native speaking, high-volume publishing countries like China, India, South Korea, and Iran.
Most of the searches were made for the 5-years period 2008 2012, but we also investigated the 5-years periods 1993 1997, 1998 2002, and 2003 2007 to determine changes in publications volumes over time.
Currently, the DFT publication volume doubles every 5 6 years.
Others countered that the extra 2 years would only increase the expectations on publication volume.
If your focus is on publication volume, there's less incentive to challenge existing paradigms.
According to Fig. 1, the annual publication volume shows a strong increase since 1995.
The annual publication volume of DFT literature continues to grow steadily.
Fig. 7 Annual publication volume in terms of DFT studies that investigate specific compound groups.
The overall annual publication volume since 1980 that is concerned with DFT is shown in Fig. 1.
Data were extracted to provide an overview of the literature, including types of individual differences studied, publication volume over time, measures, samples, and study outcomes.
Figure 7 shows the annual publication volume of DFT studies that investigate specific compound groups: inorganic metals, organometallic compounds, transition metal compounds, lanthanides, and actinides.
