We investigate the validity of the argument by the financial services industry to “roll over your ‘old' 401(k) plan” because 401(k)-type plans have a limited number of investment options, while IRAs have a virtually unlimited number of options. We empirically analyze the diversification of...

We study the problem of routing heterogeneous jobs to heterogeneous servers, where the service rate depends both on the job type and the server type. We employ a math programming approach which is desirable since it can easily be embedded within larger planning problems. While convex objectives...

Terrorism is a major issue in the 21st century. In this paper we examine the effect of terrorism on the stock market. We go beyond previous studies to explore the spectre of terrorism on the market rather than terrorist activities. Using a narrative-based approach à la Shiller (2019), we find...