Impossibility of Stable and Non-damaging bossy Matching Mechanism

In this paper we prove the impossibility of stability rules that satisfy a concept weaker than nonbossiness. Stability and nonbossiness are essential to matching theory. However, Kojima Fuhito(2010) shows that a matching mechanism that is both stable and nonbossy dose not exist. We define a new concept that is weaker than nonbossiness and consider whether or not stability and the new concept are compatible. Unfortunately, we show that these properties are incompatible.matching, stability, non-damaging bossy, impossibility theorem.

Does Self-regulation of Advertisement Length Improve Consumer Welfare?

In Japan, TV platforms regulate themselves as to the length of the advertisements they air. Using modified Hotelling models, we investigate whether such self-regulation improves consumer and social welfare or not. When all consumers choose a single TV program (the utility functions of consumers satisfy the standard "full-coverage" condition), self-regulation always reduces consumer welfare. It improves social welfare only if the advertisement revenue of each platform is not small and the cost parameter of investments in improving the quality of TV programs is small. When some consumers have outside options (the standard "full-coverage" condition is not satisfied), self-regulation can benefit consumers because it increases the number of consumers who watch TV programs.

Coordinating Antitrust Policies Against International Cartels

Theoretical research on leniency programs has so far focused attention on cartels formed within a country the purpose of the paper is to analyze the situation where a cartel is formed internationally. We consider a model with two firms operating in two countries. The antitrust authority (AA) in each country chooses either to implement a leniency program or to use traditional investigation to detect/deter cartel activity. Given the combination of antitrust policies, the two firms play market games simultaneously in both countries. Assuming that the information on the existence of a cartel in one country spills over to the other, we analyze a strategic interdependency faced by the AAs. Several policy objectives of the AA are considered. We find that if the objective is to maximize revenues from the penalty imposed on cartels, an asymmetric equilibrium exists in which one country chooses to free-ride the other's choosing a leniency program.Cartels

Anti-competitive with Respect to Exclusive Dealing Contract under Supply Chain Market

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Product flow analysis using trade statistics and consumer survey data: a case study of mobile phones in Australia

This study describes an integrative approach to product flow analysis of (waste) electrical and electronic equipment using trade statistics and consumer survey data. We demonstrate this approach with a case study of mobile phones. Using statistical and empirical data for Australia over 1997–2014, we have shown how different sources of information can be collated and cross-checked to estimate the product in-use stocks and flows, product lifespan and lifespan structure, as well as to detail the product age structure in stock and at the end of life. From our results, the total number of mobile phones in in-use stocks in Australia has been estimated at 46 million at the end of 2014, or about 2 phones per capita. The proportion of phones kept in storage (not being in use) has been constantly rising, reaching 50% in 2012–2014. The average expected lifespan for a mobile phone sold in Australia decreased from about six years in the late 1990s to about five years in the early 2000s, and then stabilised at around four years (±0.5 years). The average time of active use for mobile phones was estimated in the range of 2.0–2.6 years (which includes first use and reuse). The estimated lifespan profile for mobile phones in Australia has been confirmed to be relatively similar to that reported in Japan. While this methodology presented here provided meaningful results, the accuracy and relevance would be improved by better quality of original data. Therefore, in conclusion, we also highlight potential improvements in consumer surveys that would help to enhance the analysis