The incidence of Down's syndrome in the Liverpool and Bootle areas from 1961 to 1979 was investigated. A total of 319 liveborn cases was ascertained over this period. Using 3-year moving averages, the incidence of the condition fell gradually from 1.62 per 1000 livebirths for 1961 to 1963 to 1.09 per 1000 livebirths for 1977 to 1979. This trend is significant at the 0.1% level. Over the same pe...

1. I’ll post outlines such as this at first with the notation “Tentative” on the title line. I’ll revise them after they’re covered in class, and remove that notation. After that, I’ll won’t change them unless I notify you explicitly. Don’t trust hardcopies made before those revisions! 2. Assignment 1 a. Investigate the course Syllabus. b. Turn in to me ASAP a sheet of paper with i. Your e-mail...

Repeated censuses of a population of yellow baboons (Pupio ~ynocephalri~s) in Amboseli National Park, Kenya, revealed a decrease from over 2,500 animals in 1963-1964 to 123 individuals in 1979, or from a density of about 73 to 1.8 baboons per kmz over a 15-year period. Median group size decreased from 43 in 1964 to 27 in 1979. The largest and smallest goups declined the most; groups near the me...

Se presenta una aproximación a la producción y poética no realista del dramaturgo mexicano Martín Zapata (1963). El artículo se centra en obra que va de 1979 2016, correspondiente sus dos primeras épocas (iniciación exploración), bajo constantes: lo especular (metadrama) estética fantástico-gótica.
 Zapata: A Gothic Playwright Among Us
 Abstract
 This article discusses the poetic...

Inequality has social costs: it may engender political divisions, aggravate crime, and lead low-income families into poverty from which they or their children may not emerge. Dramatic shifts in relative well-being therefore demand attention. In the late. 1980s, economists discovered that the earnings of highand low-wage workers were rapidly diverging (Levy and Murnane 1992). Chart 1 plots earni...