WITH this issue we begin a series of Perspectives and Review articles honoring our colleague James F. Crow, who, along with this journal, celebrated his 95th birthday this year. Why honor Jim? The answer is obvious to the many who have the privilege to know him: a gentleman and scholar of the highest order, he represents the best of our field. Jim Crow is a living link between our generations a...

*We thank Shane Frederick, John Lynch, Jim Bettman, and Birger Wernerfelt for helpful comments and suggestions. We are also grateful for financial support to Ariely and Prelec from the Sloan School of Management, and to Loewenstein from the Integrated Study of the Human Dimensions of Global Change at Carnegie Mellon University (NSF grant # SBR-9521914). This work started while the authors were ...

The Regional Superfund Ground Water Forum is a group of EPA professionals representing EPA’s Regional Superfund Offices, committed to the identification and the resolution of ground water issues impacting the remediation of Superfund sites. The Forum is supported by and advises the Superfund Technical Support Project. Dense nonaqueous phase liquids is an issue identified by the Forum as a conce...

This paper uses an updated and revised panel data set on ambient air pollution in cities worldwide to examine the robustness of the evidence for the existence of an inverted-U-shaped relationship between national income and pollution. We test the sensitivity of the pollution-income relationship to functional forms, to additional covariates, and to changes in the nations, cities, and years sampl...

We report the results of experiments designed to test the impact of social status on learning in a coordination game. JEL codes: C92, C7, Z13 *Thanks to the participants in the Coordination Success Conference in Honor of Raymond Battalio for insightful suggestions. Chuck Manski and Thomas Schelling provided valuable comments on an earlier draft. Research assistance was provided by Christy Aroop...

The aim of this research work was to investigate on the ball filling estimation of Miduk semi-autogenous (SAG) Mill via an utilized method. Miduk copper concentrator is located in Kerman Province, Iran, and its size reduction stage includes one gyratory crusher which feeds one SAG mill (9.75 dia.(m)*3.88 length(m)) following two parallel ball mills (5dia.(m)*7lenght(m)). After SAG mill, a tromm...

the ball and beam system is one of the most popular laboratory setups for control education. in this paper, we design a fuzzy pd cascade controller for a ball and beam system using asexual reproduction optimization (aro) technique. the ball & beam system consists of a servo motor, a grooved beam, and a rolling ball. this system utilizes a servo motor to control ball’s position on the beam. chan...