VPWA March and IEM June Calendars [Calendar]

supplement vol. 5, no.29 & 30, march-june 2001

supplement vol. 5, no.29 & 30, march-june 2001

supplement vol. 2, no.11 & 12, march-june 1998

supplement vol. 2, no.11 & 12, march-june 1998

Time Units and Calendars

We are investigating a formal representation of time units and calendars, as restricted temporal entities for reasoning about activities. We examine characteristics of time units, and provide a categorization of the hierarchical relations among them. Hence we define an abstract hierarchical unit structure (a calendar structure) that expresses specific relations and properties among the units th...

Two Measles Outbreaks After Importation — Utah, March–June 2011

Before licensure of a measles vaccine in 1963, more than 500,000 measles cases on average were reported in the United States each year during 1951-1962. By 1993, through measles vaccination and control efforts, only 312 cases were reported nationwide. In 2000, the last year in which an outbreak had occurred in Utah, measles was declared "not endemic in the United States," but measles importatio...

Cyril Leslie Oakley. 20 June 1907-27 March 1975.