There are hundreds of thousands of crude oil and natural gas wells across North America that are currently not producing oil or gas. Many of these wells have not been permanently decommissioned to meet environmental standards for permanent closure, but are in an inactive state that enables them...

This paper presents a non-sequential search model that allows for vertical product differentiation. In the unique symmetric equilibrium firms with different characteristics draw utilities from a common utility distribution, resulting in asymmetric price distributions. The model therefore...

Sunk costs for R&D are an important determinant of the level of innovation in the economy. In this paper I recover them using a Markov equilibrium framework. The contribution is twofold. First, a model of industry dynamics which accounts for selection into R&D, capital accumulation and...

Recent work by Wang and Phillips (2009b, c) has shown that ill posed inverse problems do not arise in nonstationary nonparametric regression and there is no need for nonparametric instrumental variable estimation. Instead, simple Nadaraya Watson nonparametric estimation of a (possibly nonlinear)...

This paper explores a paradox discovered in recent work by Phillips and Su (2009). That paper gave an example in which nonparametric regression is consistent whereas parametric regression is inconsistent even when the true regression functional form is known and used in regression. This appears...

We compute the productivity gaps in manufacturing industries by urban, rural less sparse and rural sparse locations in the UK. This is done by using firm-specific total factor productivities, which are estimated by a semi-parametric algorithm within 4-digit manufacturing industries using FAME...

In this paper I propose and estimate an equilibrium search model using matched employer-employee data to study the extent to which wage differentials between men and women can be explained by differences in productivity, disparities in friction patterns, segregation or wage discrimination. The...

We study, both theoretically and empirically, how export intensity (the ratio of exports to sales) is related to firm productivity. Using a representative sample of Italian manufacturing firms, we find that Total Factor Productivity (TFP) is strongly negatively correlated with export intensity...

In this paper I study two methods often used in public procurement to deal with the risk that the winning bidder may default on his bid: augmenting the standard first price auction with an ex-post verification of the responsiveness of the bids and using an average bid auction. I show that when...

This paper constructs and structurally estimates a dynamic model of occupational choice where all occupations are characterized in a continuous multidimensional space of skill requirement using the data from the Dictionary of Occupational Titles and the NLSY79. This skill space approach allows...