The purpose of this study was to visually compare the psychological profile of 33 male wheelchair athletes who competed in track and field events, with previous results of able-bodied athletes. Based on the data gathered using the Profile of Mood States and the State-Trait Anxiety Inventory the wheelchair athletes demonstrated a profile similar to that of able-bodied athletes. This finding was ...

I develop a theoretical model of price discrimination under social influence. I find that social influence gives sellers the incentive to artificially create and maintain excess demand on the market. The rationing occurs mainly at the low end of the market, and sometimes results in full rationing of the low end. Furthermore, the incidence of price discrimination under social influence is much l...

Until very recently, the emphasis in Visualization research has been on methods, their algorithmic underpinnings, and their implementation in systems. Most papers have been of the proof of concept variety: describing new ideas for attacking a visualization problem and demonstrating feasibility and quality by presenting visual and performance results from a prototype implementation. Typical publ...

In this paper, we propose a set of recommendation strategies and develop a graph-based framework for recommendation in online price-comparison services. We verify the superiority of the proposed framework by comparing it with existing methods using real-world data.

In this paper we investigate price decreases made by sellers of multi-component systems. Price reductions are perhaps the most widely used retail tactic to boost sales, and the desired magnitude of price reductions is of great interest to marketers. On the one hand, small price reductions when large reductions are warranted may only deplete retail margins without any impact on sales volume. On ...

Abstract Based on the data set of Behringer (1997), we develop and test competing models of the determinants of witch hunting in Bavaria in the period 1345-1750, which explain the cyclicity as well as the variation over time from the 14th to the 18th century. Our main focus is on economic factors and their influence on the intensity of prosecution. We analyse this issue by quantifying the impor...

Price delegation to the sales force is a practice widely adopted by firms. This paper examines the relationship between price delegation and managerial profits using a laboratory economics experiment. A novel feature of our experiment is that we study how varying the relationship organization of the sales manager and salesperson to allow for 1) requests by the salesperson for the manager to cho...

Web-based interorganizational workflows need efficient time management. Variations of activity durations and branching distributions on or-split nodes make it necessary that we treat time management in workflows in a probabilistic way. We introduce the notion of duration histograms for capturing the available temporal information about workflow execution, define the necessary operations for com...