We examine the scaling relationship of pedestrian fatality counts as a function of the population size of 115 to 161 large U.S cities during the period of 1994 to 2011. We also examine the relationship of non-pedestrian and total traffic fatality counts as well. We used both annual and panel...

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....

Warren Buffett Value Indicator or Buffett Indicator is the ratio of financial capitalization to GDP for a given time for a country. Buffett Indicator is used as a buy or sell signal to many investors around the world. This paper attempts to determine whether the scaling relationship may exist...

Despite a large number of studies on multiple socioeconomic factors influencing urban PM2.5 pollutions in China, only a few comparable studies appeared for developed countries. We analyzed the impact of three major socioeconomic factors of city income per capita, population density of city, and...

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...

We examine the scaling relationship of pedestrian fatality counts as a function of the population size of 115 to 161 large U.S cities during the period of 1994 to 2011. We also examine the relationship of non-pedestrian and total traffic fatality counts as well. We used both annual and panel...

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...

Sustainable Development Goals adopted by The United Nations seek to protect and prevent the extinction of threatened species by 2020. Several countries even in the 1990s began expanding species protection to reach the 2020 goal early. This research investigates whether countries with low level...

How much productivity improvement or cost reduction would be possible when the number of semiconductor chips fabricated increased from one million to two million? How many more wind farms or photovoltaic farms needed to be installed before their unit cost of producing electricity can become...