Further studies of methods for reducing community noise around airports

A simplified method of analysis was used in which all flights at a 'simulated' airport were assumed to operate from one runway in a single direction. For this simulated airport, contours of noise exposure forecast were obtained and evaluated. A flight schedule of the simulated airport which is representative of the 23 major U. S. airports was used. The effect of banning night-time operations by four-engine, narrow-body aircraft in combination with other noise reduction options was studied. The reductions in noise which would occur of two- and three-engine, narrow-body aircraft equipped with a refanned engine was examined. A detailed comparison of the effects of engine cutback on takeoff versus the effects of retrofitting quiet nacelles for narrow-body aircraft was also examined. A method of presenting the effects of various noise reduction options was treated

Creativity and the measurement subclinical psychopathology in the general population: schizotypy, psychoticism, and hypomania

The aims of the study were to investigate the roles of well-known psychopathology measures in predicting creativity, to assess the concepts of a multitrait and single trait understanding, and to evaluate the role of latent measures of hypomania predicting creativity. Following the completion of a battery of questionnaires 203 participants completed 2 creative cognition tasks. Multivariate multiple regression analyses revealed significant effects for both schizotypy and the latent hypomania scales. Critically, these showed that some negatively (introvertive anhedonia, excitement, and social vitality) and others positively (impulsive nonconformity and mood volatility) predicted creativity. These findings suggest future avenues should evaluate the roles of mood, autonomy, and asociality in mediating the link between subclinical psychopathology and creativity. Further, research should both manipulate state and control trait mood when evaluating psychopathology and creativity