This article describes how to use heterogeneous information in speech enhancement. In most of the current speech enhancement systems, clean speeches are recovered only from the signals collected by acoustic microphones, which will be greatly affected by the acoustic noises. However,...

Purpose: Recent literature suggests that sin firms (firms in tobacco, gambling and alcohol industries) have lower institutional ownership, fewer analysts following, higher abnormal returns and higher financial reporting quality. This study aims to investigate empirically how sin firms engage in...

We develop a model to study the observability of investors' information acquisition in financial markets. Relative to observable information acquisition, unobservable information acquisition leads to more information production if and only if the ratio of the information-acquisition cost to...

Retailers are often short on capacity, so a logical assumption would be that retailers could improve their profits by acquiring more. In this study, we show that this is not necessarily true, because retailer's capacity has a strategic role in channel distribution. Specifically, we consider a...

This paper tests the economic profitability of a zero-investment trading strategy based on knowledge of IPO underperformance and on estimates of pre-IPO earnings management. This trading strategy is implemented by forming two-firm portfolios that take short positions in the IPOs and long...

This paper studies managerial short-termism by considering a model in which two firms compete for a new investment opportunity. It shows that under competition firms may deliberately induce short-termism by tying managerial pay to short-term stock prices. Due to information asymmetry between...