COGAR was a research project that aims to assess the risk associated with UCG in operating mines and areas of high vulnerability. The Project commenced in July 2013 and was completed in accordance with the schedule in June 2016. The project was organized into work packages, each covering a...

By basic research the IEEE 802.15.4/Zigbee standard was identified as the key technology for a wireless sensor network (WSN) and Bluetooth for the wireless mines rescue communication system link. Additionally, alternative power supply technologies have been examined. Wireless sensor network...

We investigate the effect of speaking Spanish at home as a child on completed schooling and aptitude test scores using data on Hispanics who grew up in the U.S. from the NLSY79. We model the accumulation of traditional human capital and English fluency, leading to the joint determination of...

We investigate the eect of speaking Spanish at home as a child on completed schooling and aptitude test scores using data on Hispanics who grew up in the U.S. from the NLSY79. We model the accumulation of traditional human capital and English uency, leading to the joint determination of...

Trends in gross domestic product (GDP) and total factor productivity (TFP) growth in the former socialist economies seem to indicate that these economies were converging to unusually low long-run growth rates in the late 1980s. In this paper we develop an endogenous growth model of...

In this paper, we derive a discrete choice model of the demand for medical care from a theoretical model that implies a natural interrelation between price and income. We show that, in the context of a discrete choice model, if health is a normal good, then the price elasticity of the demand for...

In this paper, we derive a discrete choice model of the demand for medical care from a theoretical model that implies a natural interrelation between price and income. We show that, in the context of a discrete choice model, if health is a normal good, then the price elasticity of the demand for...

A simple model of the distribution of wealth is presented. In such a model the distribution of wealth follows a Pareto type II distribution whose parameters depend on the growth rates discussed in the book. Compared to previous studies of the asymptotic distribution of wealth in economies...