Instantiation orderings over formulas (the relation of one formula bemg an instance of another) have long been central to the study of automated deduction and logic programming, and are of rapidly-growing importance in the study of database systems and machine learning A variety of instantiation ordenngs are now IP use, many of which incorporate some k ind of background information in the form ...

This paper highlights analytical reasons why we believe trade and technology are linked to wage movements in general, and how we should organize our examination of the recent episode of wage and employment erosion in the OECD countries. We start with a graphic tour through the mechanics of general equilibrium theory on trade and wages. This provides a set of implied relationships between wages ...

OBJECTIVES To study HIV risk behaviors in different population groups, linkages to bridge populations, and to examine factors affecting such behaviors and links. METHODS Ten population groups in 4 provinces were surveyed. Stratified random cluster sampling was used, and interviews were conducted to provide information on sociodemographic characteristics, mobility, and risk behaviors. The grou...

1. The casual blood pressure is the sum of the relatively stable basal pressure taken under defined conditions of rest and the labile supplemental pressure (casual minus basal), which represents the response to the current degree of physical, mental and probably metabolic stimulation. 2. The basal and supplemental blood pressures behave differently and it seems likely that different factors are...

BACKGROUND The objective of this paper is to describe sources of information on HIV/AIDS and their relationship with AIDS-related knowledge and sexual behaviour in a rural area of south Senegal. METHODS A cross-sectional study using a standardized questionnaire was administered in 1994 by local interviewers to 240 men and 242 women aged 15-59 years, randomly selected from the general populati...

High intakes of dietary sodium are associated with elevated blood pressure levels and an increased risk of cardiovascular disease. National and international guidelines recommend reduced sodium intake in the general population, which necessitates population-wide surveillance. We assessed the utility of casual (spot) urine specimens in estimating 24-hour urinary sodium excretion as a marker of s...