Neural network based speech synthesizer: A preliminary report

A neural net based speech synthesis project is discussed. The novelty is that the reproduced speech was extracted from actual voice recordings. In essence, the neural network learns the timing, pitch fluctuations, connectivity between individual sounds, and speaking habits unique to that individual person. The parallel distributed processing network used for this project is the generalized backward propagation network which has been modified to also learn sequences of actions or states given in a particular plan

Examining the Relationship Between Social Cohesion and Health in Kensington

This quantitative cross-sectional survey study was conducted in collaboration with the New Kensington Community Development Corporation (NKCDC) to improve our understanding of the role of social cohesion in the Somerset neighborhood. Its aims were to help guide future efforts to improve the health of this community by considering whether social factors might contribute to overall health. In previous studies, social cohesion has been hypothesized to be related to overall self-reported health. In this study we examined the nature and strength of this relationship in a low socio-economic status population in Kensington. We used linear regression to evaluate cross-sectional survey data collected from 328 neighborhood residents. Data was collected on health information, social cohesion, demographic factors, health behaviors, and financial stability. Variables that were significantly associated with self-reported health were included in a multiple regression model to examine the relationship between social cohesion and self-reported health. Our findings were that social cohesion and overall health were related. We also found that stress was significantly associated with social cohesion as well as overall health; while the reach of this study stops short of being able to identify the causality of these relationships, organizations such as NKCDC could combine the strength of the relationships with their expertise in the relevant population to better inform their future programming. This study also revealed a number of areas that could be worthy of future study, including the importance of collective efficacy in improving population health and the effect of social cohesion on people’s health over the course of a longitudinal study

Pressurant requirements for discharge of liquid methane from a 1.52-meter-(5-ft-) diameter spherical tank under both static and slosh conditions

Pressurized expulsion tests were conducted to determine the effect of various physical parameters on the pressurant gas (methane, helium, hydrogen, and nitrogen) requirements during the expulsion of liquid methane from a 1.52-meter-(5-ft-) diameter spherical tank and to compare results with those predicted by an analytical program. Also studied were the effects on methane, helium, and hydrogen pressurant requirements of various slosh excitation frequencies and amplitudes, both with and without slosh suppressing baffles in the tank. The experimental results when using gaseous methane, helium, and hydrogen show that the predictions of the analytical program agreed well with the actual pressurant requirements for static tank expulsions. The analytical program could not be used for gaseous nitrogen expulsions because of the large quantities of nitrogen which can dissolve in liquid methane. Under slosh conditions, a pronounced increase in gaseous methane requirements was observed relative to results obtained for the static tank expulsions. Slight decreases in the helium and hydrogen requirements were noted under similar test conditions

The Importance of the Study of Medical Sociology

This 1894 article by a physician discusses the relationshp between the medical profession and the general field of sociology