Many of the critical technologies in knowledge economy are undergoing an exponential rate of rapid improvement. The best known roadmap to guide exponential trend of improvement has been provided by Moore’s law. This paper will update the validity of Moore’s law by applying it to...

The purpose of this paper is to examine the transition of economic freedom indexes themselves among countries in the world instead of their economic effect. The three central questions of this study are: Do economic freedom sub-indexes converge? Do some sub-indexes of economic freedom display...

The Millennium Development Goals by the United Nations included a global target for Improved Water Source to reach 88% of global population by 2015. By 2010, the global target was reached. However, there are still millions of people lacking the improved access to drinking water. We propose the...

Since 1990, 2.1 billion people in the world gained access to improved sanitation. However, 2.4 billion people still do not use a basic toilet. We examine whether the country differences in the sanitation index existing in 1990 has been reduced and if so, how fast. We deploy the convergence...

By far, the most popular type of corruption measurements used is Corruption Perception Index published annually since 1995 by Transparency International. We examine whether country differences of the Corruption Perception Index existing in 2003 has narrowed by 2015 and if so, how fast. We deploy...

Many countries in the world have been experiencing widely varying rates of change in their carbon intensity of economic output. Dynamic trend of carbon intensity in this research is measured by the progress ratio from experience curve involving 127 countries during the period of 1980 to 2011....

Using yearly nitrogen dioxide pollution measures in parts per billion for 179 countries during 1979 to 2011, this research examines whether the convergence process of catch-ups has taken place among countries in both total as well as in multiple subgroups of countries. All four income subgroups...

Under a wide variation of overfished stocks by countries and regions, this research examines whether regions and countries with low overfished ratios are increasing their fishing output to catch-up to regions and countries with higher overfished ratios. For the total group of 131 countries, the...

Two measures of fine particulate matter, PM2.5 exposure and PM2.5 exceedance are used to analyze convergence patterns of 212 and 108 countries during the period of 2000 to 2014. For PM2.5 exposure, sigma index diverges at the annual rate of 1.07%, while gamma index converges at -0.5% rate. For...