We empirically quantify and characterize informational barriers to entry into the anti-ulcer drug market by studying the diffusion process of the molecule Omeprazole in the first 30 months after it entered the market. Using a novel panel dataset tracking doctors' complete prescription histories,...

The Internet has changed the way companies and persons communicate. This paper considers the diffusion of Internet in Chile. Using traditional methods in marketing, particularly the Bass model, the potential number of Internet users and the characteristics of the diffusion process are estimated,...

We propose a new test for the parametric form of the volatility function in continuous time diffusion models of the type dXt = a(t,Xt)dt + s(t,Xt)dWt. Our approach involves a range-based estimation of the integrated volatility and the integrated quarticity, which are used to construct the test...

This paper introduces a new estimator to measure the ex-post covariation between high-frequency financial time series under market microstructure noise. We provide an asymptotic limit theory (including feasible central limit theorems) for standard methods such as regression, correlation analysis...

This paper represents a model for the financial valuation of a firm which has control on the dividend payment stream and its risk, as well as potential profit by choosing different business activities among those available to it. Furthermore the company invests its free reserve in an asset,...

This study examines the impact of Type I and Type II cultural differences on mobile phone adoption patterns. We use Hofstede's cultural dimensions to examine cultural differences of two countries (Type I: the U.S.; Type II: S. Korea) and employ the Bass diffusion model to delineate innovation...