We argue that economists have studied the role of management from three perspectives: contingency theory (CT), an organization-centric empirical approach (OC), and a leader-centric empirical approach (LC). To reconcile these three perspectives, we augment a standard dynamic firm model with organizational capital, an intangible, slow-moving, productive asset that can only be produced with the di...

This paper analyzes differences in welfare utilization between immigrants and natives in Sweden using a large panel data set for the years 1990 to 1996. We find that immigrants use welfare to a greater extent than natives and that differences cannot be explained by observable characteristics. Welfare participation decreases with time spent in Sweden. Refugees assimilate out-of welfare at a fast...

We present a general analytical framework for the modeling and analysis of TCP variations. The framework is quite comprehensive and allows the modeling of multiple variations of TCP, i.e. TCP-Vegas, TCP-SACK, and TCP-Reno, under very general network situations. In particular, the framework allows us to propose the first analytical model of TCP-Vegas under on-off traffic – all existing analytica...

880 NOTICES OF THE AMS VOLUME 50, NUMBER 8 A math story: When I was little, growing up in Denmark, before kindergarten— only there wasn’t any then—so before I heard of The Tinder Box or The Ugly Duckling from the books of Hans Christian Andersen, my father told me about low-pass and high-pass filters. He was a telephone engineer and worked on the filters used in signals transmitted over long ca...

This paper determines how different network structures influence the diffusion of innovations. We develop a model of diffusion where: 1. an individual’s decision to adopt a new technology is influenced by his contacts; and 2. contacts can discuss, coordinate, and make adoption decisions together. A measure of connectedness, ‘cohesion’, determines diffusion. A cohesive community is defined as a ...

Suppose a firm has a widespread reputation for sexually harassing its workers (or it follows the practice of telling workers that if they wish to work for the firm they must be prepared for sexual harassment). When a worker offers to work for such a firm and is accepted, there is, therefore, a Pareto improvement. Is there a case for banning such 'contractual' sexual harassment? This paper argue...