Stable isotope ratios as a tool in microbial forensics--Part 1. Microbial isotopic composition as a function of growth medium

The stable isotope ratios of a seized pathogen culture could potentially reveal information about the environment in which the agent was produced. In this paper we describe general relationships between stable isotopes of carbon, nitrogen, and hydrogen in bacteriological culture media and spores of Bacillus subtilis, an endospore-forming soil bacterium. In numerous media that varied both in nutrient composition and water stable isotope ratios, medium to spore enrichment in carbon isotopes was 0.3 +/- 2.0% per thousand (parts per thousand), and in nitrogen, 4.5 +/- 0.7% per thousand. We achieved mass balance for the contribution of hydrogen isotopes from nutrients (70%) and water (30%) to spores in independent experiments by varying the isotope ratios of nutrients or water. A model was derived for predicting the isotope ratio values of spores from those in nutrients and water.     

Popularity Function Forecasts for the 2005 UK General Election

The article provides a set of contingent forecasts for the forthcoming UK general election. The forecasts are based on popularity function derived from monthly time series data covering the period 1997–2004. On most likely assumptions, the forecasts produce a clear Labour victory in the early summer of 2005, with the Liberal Democrats increasing their vote share by roughly four percentage points.     

The powers of problem definition: The case of government paperwork

Problem definition is a package of ideas that includes, at least implicitly, an account of the causes and consequences of undesirable circumstances and a theory about how to improve them. As such, it serves as the overture to policymaking, as an integral part of the process of policymaking, and as a policy outcome. In each of these roles it seems to exert influence on government action. Distinguishing among the roles clarifies the nature of that influence. A case study examines the transition from one problem definition to another in the domain of information collection by the federal government. The rise of the Paperwork Reduction definition illustrates the variety of ways in which problem definition has powerful consequences.     

ELECTRICITY TARIFFS: SOCIAL POLICY IMPLICATIONS

Abstract: The issue of equity in the provision of public utilities is one which has been the subject of a number of Australian studies over the past ten years. In particular, the obvious inequities in pricing between different classes of electricity consumers have attracted attention. Evidence that these inequities exist not only between, but also within, consumer classes was found in a survey of Brisbane residential electricity consumers. Significantly higher rates per kilowatt hour are paid by lower income consumers and the proportion of income spent on electricity is higher than that spent by the upper income households surveyed.
These inequities have important implications in the development of social policies, particularly those directed at the aged who, in many cases, rely on a low fixed income in the form of the old age pension. So far, in Australia, only the Victorian state government has approached this issue in any detail as a part of its Social Justice Strategy despite the fact that similar inequities in the provision of electricity to household consumers exist in all states.