Ein Identitätsmanagementsystem ermöglicht es dem Benutzer, verschiedene Identitäten zu definieren und zu wählen, in welcher Rolle er gegenüber dem Kommunikationspartner auftritt und welche Informationen er über sich offenbart. Das Ziel dieser Arbeit ist es, einen Überblick über existierende Anwendungen für Identitätsmanagement im Internet zu geben und diese hinsichtlich der Erfüllung von Privat...

What is it to have a reason? According to one common idea, the Factoring Account, you have a reason to do A when there is a reason for you to do A which you have—which is somehow in your possession or grasp. In this paper, I argue that this common idea is false. But though my arguments are based on the practical case, the implications of this are likely to be greatest in epistemology: for the p...

This study evaluates the success of the monthly deposit of funds into hypothetical retirement portfolios for the period January 1926 to December 2003. The results of the study indicate that, in general, portfolios with a higher equity portion had a greater likelihood of achieving the desired terminal value. We also find that monthly deposits based on the historical asset class returns generally...

A case of selection and adaptation of weekly work schedules is presented. Weekly work schedules in two franchises of an important retail clothing chain have to be established. Working time accounts are used: each week, an employee can owe the company a certain number of hours or vice versa. Nevertheless, over a certain threshold, the hours have to be paid for by the company and the account bala...

We exploit a unique merchant-level dataset from the monopoly payment card network in China to study payment card pricing. We develop hypotheses associating payment card pricing to card penetration rate, profitability and fraud risk. Our empirical analysis uses the variations in those three factors across industries to show that the card network charges a higher merchant discount for industries ...