In the literature two notions of the word problem for a variety occur. A variety has a decidable word problem if every finitely presented algebra in the variety has a decidable word problem. It has a uniformly decidable word problem if there is an algorithm which given a finite presentation produces an algorithm for solving the word problem of the algebra so presented. A variety is given with f...

The aim of this study was to assess the content and extent of food references and marketing within popular children's magazines in Australia. Sixteen popular Australian children's magazines were selected, as determined by readership and circulation data. Back copies of each magazine were purchased for publications released between January and December 2006 (n = 76). Each magazine was assessed f...

PURPOSE OF REVIEW This review examines the risk of obesity in migrant groups-specifically migrants from countries with lower prevalence of obesity to countries with higher prevalence of obesity. We examine obesity prevalence within migrant groups compared with native populations and the evidence on factors that might shape obesity risk in these migrant groups. RECENT FINDINGS Migrants may arr...

BACKGROUND Disease risk is lower in metabolically healthy obese adults than in their unhealthy obese counterparts. Studies considering physical activity as a modifiable determinant of healthy obesity have relied on self-reported measures, which are prone to inaccuracies and do not capture all movements that contribute to health. OBJECTIVE We aimed to examine differences in total and moderate-...

the ever increasing rate of power consumption has led to an increase in public exposure to extremely low frequency magnetic fields (elf-mfs) and brought severe concerns about their health effects. considering previous studies and the facts about potential health effects of these fields, the present study aimed to evaluate the elf-mf flux densities from power distribution lines near hospitals in...

This paper takes a nte mixture approach to model heterogeneity in incentives and selection effects of drug coverage on the total drug expenditure among the Medicare elderly US population. Evidence is found that the positive drug expenditures of the entire elderly popultion can be decomposed into two groups of relatively healthy with lower average expenditures and relatively unhealthy with highe...

The aims of our study were to investigate the prevalence of risk factors in persons with previously known diabetes ("old DM"), persons with diabetes developed during the 2003-2008 period ("new DM") and diabetes-free individuals within the CroHort study. Risk factors were defined as physical inactivity, unhealthy nutritional regimen, smoking and excessive alcohol consumption, while diabetes stat...