This paper investigates how the tying of complementary products can be used to both preserve and extend monopoly positions. We first show how a firm that is a monopolist of a product in the current period can use tying to preserve its monopoly position in future periods. We then show using...

This article studies the negative signals associated with non-promotion. I first show theoretically that, when workers’ productivity rises little with additional years on the same job level, the negative signal associated with non-promotion leads to wage decreases. On the other hand, when...

This paper introduces several new Bayesian nonparametric models suitable for capturing the unknown conditional distribution of realized covariance (RCOV) matrices. Existing dynamic Wishart models are extended to countably infinite mixture models of Wishart and inverse-Wishart distributions. In...

This paper proposes a flexible way of modeling dynamic heterogeneous covariance breakdowns in multivariate GARCH (MGARCH) models. During periods of normal market activity, volatility dynamics are governed by an MGARCH specification. A covariance breakdown is any significant temporary deviation...

This paper proposes a flexible way of modeling dynamic heterogeneous covariance breakdowns in multivariate GARCH (MGARCH) models. During periods of normal market activity, volatility dynamics are governed by an MGARCH specification. A covariance breakdown is any significant temporary deviation...

This paper introduces several new Bayesian nonparametric models suitable for capturing the unknown conditional distribution of realized covariance (RCOV) matrices. Existing dynamic Wishart models are extended to countably infinite mixture models of Wishart and inverse-Wishart distributions. In...

This article studies the consequences of firm delayering on wages and the wage distribution inside firms. I consider a job-assignment model with asymmetric information and a slot constraint. The model predicts that more efficient firms are not necessarily larger than less efficient firms if...

Horizontal axis wind turbines (HAWTs) are the mainstream of wind power industry in the world; however, as turbines are becoming bigger, the maintenance of equipments grows more complex and costs much higher. Compared with HAWTs, Darrieus vertical axis wind turbines (VAWTs) have more technological...