Stefan Wolter

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This paper describes a new VLSI realization of the International Data Encryption Algorithm IDEA. The presented VLSI architecture is compared with the VINCI chip, the first silicon realization of the IDEA. Principal design aspects are also discussed. Although the VINCI circuit can be used for real-time encryption in high-speed networks such as ATM, there a(More)
Empirical research has given cause to fear that the demographic ageing in industrialized countries is likely to exert a negative impact on educational spending. These papers have linked the share of the elderly with the per capita or per pupil spending on education at the local, state-wide or national level, trying to control for other exogenous effects.(More)
This paper presents the results of a randomized experiment analyzing the use of vouchers for adult training. In 2006, 2,400 people were issued with a training voucher which they were entitled to use in payment for a training course of their choice. User behavior was compared with a control group of 14,000 people. People in the treatment and in the control(More)
This paper uses an original dataset from a survey conducted in Switzerland in 2007 to explore the dynamics of education policy preferences. This issue has largely been neglected in that most studies on welfare state attitudes do not look at preferences for education. We argue that education policy preferences vary along two dimensions: the distribution of(More)
Demographic change in industrial countries will influence educational spending in potentially two ways. On the one hand, the decline in the number of school-age children should alleviate the financial pressure. On the other hand, the theoretical/empirical literature has established that the concomitantly increasing proportion of elderly in the population(More)
It is a widely held opinion that apprenticeship training represents a net investment for training firms, and that therefore firms only train if they have the possibility to recoup these investments after the training period. A recent study using a new firm-level dataset for Switzerland showed, however, that for 60 percent of the firms, the apprenticeship(More)
Why Some Firms Train Apprentices and Many Others Do Not The latest study investigating the cost-benefit ratio of apprenticeship training for Swiss companies has shown that most apprentices offset the cost of their training during their apprenticeship on the basis of the productive contribution of the work they perform. Given this outcome, it is worth(More)
Cost and Benefit of Apprenticeship Training: A Comparison of Germany and Switzerland For the first time it has been made possible to merge a German and a Swiss firm-level data set that include detailed information about costs and benefits of apprenticeship training. Previous analyses based only on aggregate data showed that the net costs of training(More)