Trade integration in the twentieth century: What does Belgian history tell us?

Trade Integration in the Twentieth Century: What Does Belgian History Tell Us? — This paper studies globalization, protection and the impact of regional trading blocs in the twentieth century. The authors take the perspective of a small open core country in Europe. Using a gravity approach, it can be shown that trade integration in Europe followed a U-shaped pattern during the last hundred years. Moreover, the similarity between the gold standard and the current period is striking. Finally, evidence is found of a strong EC effect, in particular among EC6 countries.     

New Evidence on Home Prices from Freddie Mac Repeat Sales

The weighted repeat sales price index methodology recently reported in Case and Shiller [5] [6] is applied to a dataset of over eight million loans bought by the Federal Home Loan Mortgage Corporation over the last twenty years. Regional price indices are reported and compared to indices from other sources. Statistical issues in the creation of the index, both technical and due to sample selectivity of the Freddie Mac dataset, are extensively discussed. It is found that the new index grows at a rate similar to other indices up until 1985, after which time it grows at a significantly higher rate.     

Bounded complexity justifies cooperation in the finitely repeated prisoners' dilemma

Cooperation in the finitely repeated prisoner's dilemma is justified, without departure from strict utility maximization or complete information, but under the assumption that there are bounds (possibly very large) to the complexity of the strategies that the players may use.     

Efficiency characterizations in different DEA models

Relations of efficiency and non-efficiency for the same sets of DMUs (Decision Making Units) are developed for the Charnes, Cooper and Rhodes (CCR) and Barker, Charnes, Cooper (BCC) ratio models, as well as DEA Additive and Multiplicative Models. Surprisingly, additively efficient DMUs are not necessarily multiplicatively efficient. A geometric “stretching” phenomenon is identified for the latter case.     

Regulation effects on resource allocation of a utility-maximizing firm

The literature on the effects of rate of return regulation on the allocation of resources was mostly devoted to the classical case of a profit-maximizing monopolist. An attempt is made in this paper to extend the analysis to a firm who maximizes a utility function with profits and revenue as arguments. We prove that a meaningful presentation of the regulation effects implies the formulation of two constraints. Whether the firm over-or undercapitalizes depends on whether the constraint is imposed as an upper or a lower limit. The higher the profit motive the higher the capital-labor ratio and the marginal rate of substitution between labor and capital.     

The relationship between revenue,production and demand functions,and the implications for some microeconomic problems

The properties of concave revenue functions (in input terms) are often of considerable importance in the theory of the firm. One reason for this is the similarity between the sufficient conditions for an interior maxima (the requirement that the Hessian matrix be negative semidefinite) and the necessary and sufficient conditions for concavity. However, the concavity assumption imposes severe restrictions on the production and demand functions which apparently have not been acknowledged in the literature. It is the purpose of this note to explore these restrictions and to point out their implications for a proper formulation of some microeconomic problems.     

The exact likelihood function for a space time model

Recently the space time autoregressive moving average models have become popular and this paper derives the exact likelihood function for this model.