November 1998 2 medicamundi X-ray examinations of the skeleton are, after chest exposures, the most frequently performed type of radiological examination, representing about 30 % of the total. With a few exceptions, projection radiography forms the basis for the diagnosis of skeletal disorders and, in most cases, provides the information for the definitive diagnosis. In traumatology, rheumatolo...

Amidst continuing difficulties in justifying the expenditure on e-Government with financial and other returns, we examine whether the delivery of government services online facilitates the setting up of new businesses in a country. Using a panel assembled from three public sources of data, we examine whether delivering more and more government services online reduces the number of procedures th...

Due to the lack of consistent data, direct and robust comparisons of cross-country labour markets have been virtually impossible. This study uses a new panel data series that controls for inconsistencies, thus overcoming this problem. This study estimates gender wage differentials and gender discrimination in the German and United Kingdom labour markets. Panel estimates are used to identify gen...

The aim of this paper is to explore how interpersonal variation in risk preference affects human capital investment and wage growth. To date, there has been a distinct lack of empirical research in this area despite the fact that the risk preference of individuals plays a key role in the theory of human capital accumulation. We investigate the link between risk preference, human capital investm...

The advantages, disadvantages, and issues involved in the panel analysis of travel behavior are discussed. Increased statistical efficiency, possibility of improved prediction, and the ability to observe changes and examine behavioral dynamics, are among the advantages panel data offer. Their disadvantages, on the other hand, stem from the added biases and costs of panel survey, and increased c...

Flat Panel Display (FPD) industry has achieved sufficient critical mass for its growth to explode. Thus, it can now attract the right blend of capital investments and R&D resources to drive technical innovation toward continuous improvement in view quality, manufacturing efficiency, and system integration. These in turn are sustaining consumer interest, penetration, revenue growth, and the pote...

The effects of using a wind acceleration device (wind lens) with vertical-axis wind turbines in wind tunnel experiments were examined. A wind lens consists of a diffuser and flanges, and this study investigated the optimum parameters of their configuration with regard to the power augmentation of the turbines. The wind lens with a flat-panel-type diffuser demonstrated power augmentation by a fa...

Note: This essay was written for the catalog that accompanied the exhibition: Eigenwelt der Apparatewelt: Pioneers of Electronic Art. The exhibition was presented as part of Ars Electronica 1992, in Linz, Austria and was curated by Woody and Steina Vasulka. It consisted of a comprehensive, interactive display of vintage electronic tools for video and audio generation/processing from the 1960's ...

Today’s public displays effectively disappear: people have become so accustomed to their low utility that they ignore them. In contrast to Mark Weiser’s influential vision of the “Computer for the 21st Century,” however, public displays of the 21st century should not disappear. Instead they should become the backbone of a new global communications medium. The creation of this new communications...

The Survey of Labour and Income Dynamics (SLID) has been a source of longitudinal data since 1993. Respondents are surveyed twice a year—once on labour and once on income—for six consecutive years. Each six-year period is called a panel, and new panels are begun every three years. Presently, longitudinal data are available from two complete panels, 1993 to 1998 and 1996 to 2001, which have been...