Mixed Control Moment Gyro and Momentum Wheel Attitude Control Strategies C. Eugene Skelton II Attitude control laws that use control moment gyros (CMGs) and momentum wheels are derived with nonlinear techniques. The control laws command the CMGs to provide rapid angular acceleration and the momentum wheels to reject tracking and initial condition errors. Numerical simulations of derived control...

Various models have been proposed to explain the short-term price momentum anomaly. And also various factors such as industry, trading volume, firm size, and analyst coverage that could affect the price momentum have been found. We introduce another two factors that could affect the momentum profits, Intangible Assets and R&D Expenditures. We find that the short-term momentum profits are decrea...

Using “A” shares accessible only to local investors (who account for 99% of stock investors in China), this paper tests if short-horizon contrarian and intermediate-horizon investment strategies generate abnormal profits. We find statistically significant abnormal profits for both the arbitrage portfolio-investment strategies. Detailed analysis indicates that: (1) an absolute dominance of non-i...

The increasing role of software for developing products and services requires that organizations align their software-related activities with high-level business goals. In practice, this alignment is very difficult and only little systematic support is available. GQM+Strategies is a method that aims at aligning organizational goals, strategies, and measurements at all levels of an organization ...

Although several studies have linked Life History Strategy (LHS) variation with variation in the Five Factor Model personality dimensions, no published research has explored the relationship of LHS to the HEXACO personality dimensions. The theoretically expected relationship of the HEXACO Emotionality factor to LHS is unclear. The results of two studies (N = 641) demonstrated that LHS indicator...