The praseodymium oxide redox system releases and incorporates oxygen into an inert gas. Reductions of Pr6O11 to Pr5O9 and Pr5O9 to Pr9O16 were analyzed while heating a mixture of air with N2 at O2 partial pressures of 2 × 102-6 × 103 Pa from 373 to 833 K. Oxidations of Pr9O16 to Pr5O9 and...

The end of the 1990’s saw a number of foreign automobile manufacturers become the largest shareholders in several Japanese automobile manufacturers. It seems logical to conclude that a firm only enters into a partial ownership arrangement (POA) if it is profit maximizing. However, research to...

This study examines the extent and causes of inequalities in information technology (IT) ownership and use between natives and immigrants in the U.S., focusing on the role of English ability. The results indicate that, during the period 1997-2003, immigrants were significantly less likely to...

A major hindrance to the achievement of steady economic growth is widespread informal employment, also known as the informal sector. The informal sector is a complex phenomenon which is pervasive in developing regions of the world such as sub-Saharan Africa, south Asia, and Latin America. It was...

This article examines whether there are differences in men’s and women’s use of the Internet and whether any such gender gaps have changed in recent years. The authors use data from several surveys during the period 1997 to 2001 to show trends in Internet usage and to estimate regression...

This study examines whether there are differences in men’s and women’s use of computers and the Internet in the United States and Japan and how any such gender gaps have changed over time. The authors focus on these two countries because information technology is widely used in both, but...