Marginal Return of Infrastructure Investment on Bilateral Trade Performance

Investing in transport infrastructures such as roadways, airports and seaports has proven to improve a country's trade performance through reduction of transportation costs and providing access to production and market. This research investigates the diminishing return of infrastructure investment and also the rate of return of two types of infrastructure investment strategies on trade. An augmented gravity model is used with econometric analysis methods in this study. The results have shown that as roadway and airport densities increase, the marginal returns on trade decrease. Empirical evidence from the United States and China with all their trading partners from the past twenty years has also suggested existence of diminishing return of infrastructure investment on roadways and airports. Infrastructure investment strategy that focuses on increasing roadway and airport density experiences smaller diminishing return on trade. In contrast, seaport investment that focuses on port quality and efficiency generates higher return on trade. A trade benefiting infrastructure investment strategy that best utilizes financial resources must balance between quality and quantity based on a country's current level of infrastructure asset.

Marginal Man in Modern Russian Literature

This research was focused around the intersection of two discourses: that of marginality and that of ideology. Ponomarev analysed works by Alexander Zinoviev, Vladimir Maximov and Eduard Limonov - three writers representing different groups of Soviet dissidence - from the viewpoint of the concept, drawn from anthropological theory, of marginal man. Using a methodology he describes as ideological analysis, Ponomarev showed that the ideologies of both the writers and their characters are marginal, lying as they do between official Soviet and western democratic ideologies. He showed that the works and the 'creative behaviour' of the three writers did not change after 1991, when their ideas seemed victorious. Marginality is shown to be a permanent characteristic and is linked with the main ideas of the dissident movement in the USSR. On the basis of this marginality, Ponomarev identified some common traits in dissident ideas and drew up a model of dissident ideology. This general model of dissident ideology seems to be one of the special Russian variants of the marginal ideologies of intelligentsia and could be compared to the ideology of Rodon Raskolnikov, the central character in Dostoevsky's Crime and Punishment. The discourse of ideology in the USSR in the 1970s-1980s and in 1990s Russia thus appeared as a process in which the elements of the official Soviet ideology were gradually superseded by those of the dissident ideology linked with the ideology of the underground, the Russian version of the post-modern. Marginal ideologies won and became mainstream but did not lose their basic marginal traits. Ponomarev concludes that the gap between the 'state ideology' and the dissident ideology, taken together with the special Russian version of postmodernity has shaped the current literary process in Russia, making the figure of the marginal man into the main writer type.

Asymptotics for Marginal Generalized Linear Models With Sparse Correlations

Marginal generalized linear models can be used for clustered and longitudinal data by fitting a model as if the data were independent and using an empirical estimator of parameter standard errors. We extend this approach to data where the number of observations correlated with a given one grows with sample size and show that parameter estimates are consistent and asymptotically Normal with a slower convergence rate than for independent data, and that an information sandwich variance estimator is consistent. We present two problems that motivated this work, the modelling of patterns of HIV genetic variation and the behavior of clustered data estimators when clusters are large.