This research examines how the cost performance of defense contracts varies among the Air Force, Army, Navy, and the Department of Defense (DoD) and among five major defense contractors: Boeing, Lockheed Martin, Northrop Grumman, Raytheon, and General Dynamics. Data for these analyses was...

This paper uses a new risk aversion index to investigate the predictive effect of risk aversion on oil returns under different market conditions. Moreover, we assess whether the US partisan conflict shapes the prediction of risk aversion for oil returns. Based on the quantile regressions of oil...

Trees play an important part in landscaping as well as thermal environment adjustment. This study selected a satellite city of Sichuan Province in China, Xindu, for field measurement about tree’s crown characteristics on their cooling performances on five sunny summer days during August 2019....