We present empirical evidence that short sales contribute to market efficiency by increasing the speed of price adjustment to not only private/public firm-specific information but also market-wide information. Shortable stocks are characterized by weaker trade continuity and stronger quote...

Purpose – The purpose of this paper is to study the relationship between excess returns and short sale activities under unexpected informed and uninformed short sales. It is found that in general, the unexpected informed short sale is a bearish signal and has a negative effect on excess...

Purpose–As literatures argue that managers’ personalities will affect both corporate governance structures and corporate performance, the correlation between them is a mixed result. The purpose of this paper is to separate different routes leading to the mixed correlation, and name the...

Taiwan implemented the National Health Insurance system (NHI) in 1995. After the NHI, the insurance coverage expanded and the quality of healthcare improved, however, the healthcare costs significantly escalated. The objective of this study is to determine what factors have direct impact on the...

The main purpose of this study is to examine: (1) The dynamic changes in cost containment and quality that have occurred under the National Health Insurance (NHI) program in Taiwan; (2) The trade-off effect relationship between cost and quality. This paper uses an empirical model to look at data...

In this paper we present a mathematical programming model for the Kanban system in a deterministic multi-stage capacitated assembly-tree-structure production setting. We discuss solution procedures to the problem and address three special cases of practical interest.