Many countries have yet to decide whether extend copyright duration. Technological changes were cited by a U.S. Senate report to support duration extension. This study adds to the assessment of the validity of the technological argument by simulating the effect on optimal copyright duration of...

Copyright has been increasingly internationalized and, recently, more and more harmonized. However, there has been little theoretical study of international copyright. This paper develops and analyzes a non-cooperative two-country model of copyright, where two countries trade in information...

Copyright duration has been or is being extended in many countries. Technological and demographical changes were cited by a US Senate report to argue for US copyright term extension. This paper analyzes the validity of the arguments. Simulation of a model of the information product market...

This paper considers situations in which social networks expand on the web. These are sustained through content produced by individual agents. An incentive for such production is utility stemming from others' viewings. Whether a network is expansible or not depends on marginal utilities from...

This paper considers privacy invasion resulting from map services, such as Street View, on the Internet. Reciprocal privacy invasion can develop into a Prisoners' Dilemma. A portal site remedies such a dilemma by supplying personal information. However, under excessive supply, it worsens agents'...