Most studies find little to no effect of classroom computers on student achievement. We suggest that this null effect may combine positive effects of computer uses without equivalently effective alternative traditional teaching practices and negative effects of uses that substitute more...

Die deutsche Telekommunikationspolitik hat in den letzten 15 Jahren vor allem durch angebotsseitige De- und Re-Regulierung viel erreicht: Drastisch sinkende Preise, zusätzliche Auswahl fur Verbraucher, abnehmende Marktkonzentrationen, innovative Dienste und neue Netze kennzeichnen heute die...

Die deutsche Telekommunikationspolitik hat in den letzten 15 Jahren vor allem durch angebotsseitige De- und Re-Regulierung viel erreicht: Drastisch sinkende Preise, zusätzliche Auswahl für Verbraucher, abnehmende Marktkonzentrationen, innovative Dienste und neue Netze kennzeichnen heute die...

The Internet has fundamentally changed the way workers and firms are matched on the job market. Compared to newspapers and other traditional employment resources, online job boards presumably lead to better matches by providing a wider choice of job advertisements and more sophisticated methods...

Recent technological advances have prompted both utopian and dystopian visions of the transformation of work. The design of humane work environments requires not only a thorough understanding of technological affordances but also-critically-of work practices and their development. Many workers...

Recent technological advances have prompted both utopian and dystopian visions of the transformation of work. The design of humane work environments requires not only a thorough understanding of technological affordances but also — critically — of work practices and their development. Many...

Most studies find little to no effect of classroom computers on student achievement. We suggest that this null effect may combine positive effects of computer uses without equivalently effective alternative traditional teaching practices and negative effects of uses that substitute more...

Most studies find little to no effect of classroom computers on student achievement. We suggest that this null effect may combine positive effects of computer uses without equivalently effective alternative traditional teaching practices and negative effects of uses that substitute more...

In this paper we explore the impact of regulation; privatization and competition on the both mobile and fixed phone performance, in terms of service quality (network faults) and tariffs in both fix and mobile telecommunication services, using the technique of tow econometric approaches. A...

Economic incentives for security investment in elements of the Internet is of increasing concern. This paper contains an exploration of the incentives for Internet service providers (ISP)s to invest in security. The analysis focuses on the spillover effects of ISP security investments to other...