It is well known that some XML elements correspond to objects (in the sense of object-orientation) and others do not. The question we consider in this paper is what benefits we can derive from paying attention to such object semantics, particularly for the problem of keyword queries. Keyword queries against XML data have been studied extensively in recent years, with several lowest-common-ances...

Employees Who Become Self-Employed: Do Labour Income and Wages Have an Impact? This paper analyzes the self-employment decision among Swedish-born male employees. The main objective of the paper is to investigate the impact of the relation between the actual and the predicted income on the probability to become self-employed. The predicted income is calculated from a standard income regression ...

The authors use a laboratory experiment to examine the impact of relative wages on labor supply. They test the hypothesis that, ceteris paribus, making a given wage high (low) relative to other wage levels will lead to an increase (decrease) in labor supply. They find that labor supply does respond significantly to relative pay, and in the expected direction. However, when a strong enough reaso...