Post-mortem cooling of the human head: an infrared thermology study

The post-mortem cooling of the human head, over the first fifteen hours after death, was measured by infrared thermology. A detailed temperature map of the head and face was obtained by the use of image processing techniques and the cooling behaviour of twelve preselected facial features was observed. The two main findings of the study were a difference in cooling pattern between the upper and the lower part of the head, and a consistency in the cooling pattern of the lower part of the head in all the cases studied. A comparison of various model fits to the raw data was undertaken and the "best" bodies, models and features were determined on a statistical basis. The formula that best fitted the raw data was a novel double application of Newton's law. The features with the least error in data fitting were the chin and zygoma; that with the most error was the mouth.     

Gender Differences in Self-Perceptions and Academic Outcomes: A Study of African American High School Students

There is increasing divergence in the academic outcomes of African American males and females. By most accounts, males are falling behind their female peers educationally as African American females are graduating from high schools at higher rates and are going on to college and graduate school in greater numbers. Some have suggested that school completion and performance is associated with how students feel about themselves. The purpose of this study was to explore gender differences in the relationship between self-perceptions and 2 academic outcomes among a sample of 243 African American high school sophomores. The results suggest that, overall, females are more favorably oriented toward high school completion. Both male and female students with more positive self-perceptions have stronger intentions to complete the current year of high school. Higher grade point averages were more strongly associated with greater self-efficacy for females than for males. Given these findings, increased attention to educational programming, societal messages, and future research is warranted.