Sponsored search auctions provide a marketplace where advertisers can bid for millions of advertising opportunities to promote their products. The main difficulty facing the advertisers in this market is the complexity of picking and evaluating keywords and phrases to bid on. This is due to the sheer number of possible keywords that the advertisers can bid on, and leads to inefficiencies in the...

We illustrate two differential oligopoly games using, respectively, the capital accumulation dynamics à la Solow-Nerlove-Arrow, and the capital accumulation dynamics à la Ramsey. In both settings, we evaluate the effects of (gross) profit taxation, proving that there exist tax rates yielding the same steady state social welfare as under social planning. Contrary to the static approach, our dyna...

We investigate how the relationship between economic growth and pollution is affected by the source of pollution: production or consumption. We are interested in polluting waste that cannot be naturally absorbed, but for which recycling efforts aim to avoid massive pollution accumulation with harmful consequences in the long run. We distinguish the cases where recycling efforts are capital-impr...

The paper examines the problem of aggregating infinite utility streams with a social welfare function which respects the Anonymity and Weak Pareto Axioms. It provides a complete characterization of domains (of the one period utilities) on which such an aggregation is possible. A social welfare function satisfying the Anonymity and Weak Pareto Axioms exists on precisely those domains which do no...

The purpose of this study is to analyze the factors that influence implementation land and building tax payments in perspective regional autonomy. And formulate regulations on Land Building Tax autonomy realizing public welfare. research method used juridical empirical. This a qualitative research, type data primary secondary data. technique collecting through literature field focus group discu...

September 2002 Abstract This paper, in a quantitative way, studies the macroeconomic and welfare effects of introducing a progressive expenditure tax in a situation with the aging of the Japanese population. The paper simulates capital accumulation and social welfare by taking account of the general equilibrium effects of intragenerational inequality in order to predict the future aged society....

Income mobility is often thought to equalize permanent incomes and thereby to improve social welfare. The welfare analysis of mobility often fails, however, to account for the cost of the variability of periodic incomes around permanent incomes. This paper assesses the net welfare benefit of mobility by assuming both a social aversion to inequality in permanent incomes and an individual aversio...

Thus far, we’ve focused on the design of auctions that maximize the social welfare (at least in the case where bids are truthful). Welfare maximization is a first-order concern in many scenarios, and as we’ve seen, this objective has guided the design of auctions for sponsored search and online advertising more generally. Revenue is generated in welfare-maximizing auctions, but only as a side e...