Patrick Purcell

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Administration 2012a) states that replacement rates for the medium earner rose from about 30 percent in the 1970s to 40 percent in the 1980s, where they remain today. But replacement rates for individuals and households depend on more than Social Security provisions. They also depend on labor force activity and household arrangements. While an extensive(More)
for helpful discussions and comments. All opinions and any mistakes are the authors' and should not be attributed to the staff, officers or trustees of any of the institutions with which they are affiliated. ABSTRACT A variety of recent studies have found that the United States faces a substantial fiscal gap — that is, a sizable imbalance between projected(More)
Pension analysts refer to Social Security, employer-sponsored retirement plans, and personal savings as the " three-legged stool " of retirement income, but for many workers at least one of the legs is missing. Coverage under Social Security is nearly universal, but access to employer-sponsored retirement plans is limited. Among wage and salary workers 25(More)
The man-computer interface has evolved from the tele-typewriter to workstations that accomplish a spatial metaphor for data management. In the experimental system described here, speech and graphics techniques are used to produce an interface in the form of a metaphorical person. Interaction takes the form of an unconstrained spoken conversation with a(More)
The Adverse Drug Reactions Advisory Committee (ADRAC) database collates notifications of adverse events following immunisation (AEFI) from across Australia. The data were analysed for vaccines received between 1 January 2000 and 30 September 2002. Dose-based AEFI reporting rates were calculated using denominator data from the Australian Childhood(More)
The knowledge used for solving page layout problems can be separated into two kinds, visual knowledge, and content knowledge. Content knowledge is concerned with the structure of the information on the page, while visual knowledge is concerned with the appearance of the information and of the page as a whole. Separating these two kinds of knowledge greatly(More)
Executive Summary The Pebble Bed Advanced High Temperature Reactor (PB-AHTR) is a liquid fluoride salt cooled, pebble-fuel high temperature reactor. This U.C. Berkeley NE 170 senior design report presents the results of the Reactor Safety and Mechanical Design (RSMD) group's project to design and test a new annular core design for the PB-AHTR. The project(More)