One-step efficient GMM estimation has been developed in the recent papers of Back and Brown (1990), Imbens (1993) and Qin and Lawless (1994). These papers emphasized methods that correspond to using Owen's (1988) method of empirical likelihood to reweight the data so that the reweighted sample...

Introduction -- Public acts and bills -- Private acts and bills -- Legislation of the old Scottish and Irish parliament -- Statutory instruments -- Parliamentary rewards -- Parliamentary and command papers -- Petitions -- Parliamentary questions and debates.

A history of patents -- Private bill procedure -- The beginnings -- The protection of inventions by enactment -- The non obstante clause and the right to work -- The restriction and regulation of company patents -- The specification and its concealment -- The prolongation of patents -- The grant...

Duopoly is modeled here as a prisoner's dilemma repeated in continuous time. Firms wish to maximize discounted flows of dividend payments, which are paid when capitalization levels permit. A firm is ruined when its capitalization falls below zero, but each ruined firm is immediately replaced by...

This paper develops an econometric model of the effects of R&D effort on the magnitude and characteristics of technical change in the Bell system. We estimate simultaneously a vintage capital production function, embodying several distinct types of capital, and various factor demand functions...

In industries where physical output varies with respect to attributes or qualities, it is important to take these differences into account in estimating cost functions. This paper presents a hedonic cost function that can be used to take output characteristics into account and applies it to the...

We have used a proprietary data set of newly hired semi-skilled production workers at one location of a large unionized firm to investigate several issues in labor economics. This data set is unique in several respects: the workers in our sample faced the same wage schedules, had the same...