A rich literature argues that stock repurchases often serve as positive economic signals beneficial to investors. Yet due to their inherent flexibility, open-market repurchase programs have long been criticized as weak signals lacking commitment. We evaluate whether some managers potentially use...

The trust of sellers and transactions is a very important issue in e-commerce and e-service environments. At some e-commerce websites (such as eBay1), the trust management mechanism can compute a trust value of a seller, which is based on the ratings of past transactions given by buyers. This...

In this paper, we consider a single-machine common due-window assignment scheduling problem with deteriorating jobs. Jobs’ processing times are defined by function of their starting times and job-dependent deterioration rates that are related to jobs and are not all equal. The objective is to...

We consider the single machine job sequencing problem with release dates. The main purpose of this paper is to investigate efficient and effective approximation algorithms with a bicriteria performance guarantee.

Exchange rate uncertainty is said to have negative or positive effects on the trade flows. A Large body of the empirical research that tries to address the issue has used aggregate trade data between one country and rest of the world, or bilateral total trade data between two countries. The...