The influence of the precautionary principle on science-based decision-making: questionable applications to risks of radiofrequency fields

The precautionary principle, recognized by the European Commission as a 'full-fledged and general principle of international law,' has been advanced as a paradigm for response to potential risks to the environment or health when scientific data are uncertain. But lacking the elements and operational qualities that characterize principles that have proven useful in law, politics, science, and ethics, the precautionary principle lends itself to regulation based on the perception of a threat or fear itself. In the absence of scientific evidence for risk, recent application of the precautionary principle to questions about radiofrequency electromagnetic fields of cellular telephones and cellular telephone base stations has produced wasteful and misguided regulations and questionable advice to the public. The formation of scientific 'fire brigades' is suggested for rapid acquisition of targeted scientific data needed so that precautionary policies on technologically driven issues can be based on quantitative risk assessment.     

State and County Incarceration Rates:

ABSTRACT This study examines the direct and indirect effects of race and income inequality on imprisonment rates across states. The analysis is designed to: 1) investigate whether race and income inequality are significantly related to imprisonment when controlling for crime , 2) assess the relative magnitudes of the direct and indirect effects; and 3) assess the relative magnitudes of race and income inequality. Crime is found to be the strongest predictor of incarceration rates in five of the six equations estimated. Income inequality is significantly related to incarceration rates in two of the six equations. There was no clear evidence of a direct race effect. The indirect effect of race was greater than the direct effect in four of the six equations.     

TAX REFORMS IN EAST ASIAN DEVELOPING COUNTRIES: Motivations, directions, and implications

This first presents an overview of the level and structure of taxation in Hong Kong, Indonesia, Malaysia, the Philippines, Singapore, South Korea, Taiwan and Thailand. It then briefly reviews the available literature on tax reform, country by country. It finally gives a comparative analysis, focusing primarily on tax mix and tax structure, and the importance attached to tax administration.     

An analysis of the implications of discontinued operations for continuing income

We examine the extent to which changes in the accounting for discontinued operations affects the usefulness of disaggregated income components in predicting an entity’s future continuing income. Our study is motivated by the joint FASB/IASB convergence project which seeks to define the scope of transactions reported in discontinued operations. To examine our question, we compare the properties of continuing income and discontinued operations reported under SFAS 144 and APB 30, where APB 30 closely parallels IFRS 5. We find that the broader scope of the rule under SFAS 144 results in more persistent continuing income among firms reporting discontinued operations, and that this is concentrated among single-segment firms, which previously were less likely to fall within the scope of APB 30. Because we find no evidence of increased opportunism, we conclude that the broader scope of the rule results in a finer partitioning of recurring and nonrecurring income. Overall, our results support the broader scope of discontinued operations.     

Financing R&D in mature companies: An empirical analysis

We study financing patterns of publicly traded R&D-intensive manufacturing firms in Israel. We further characterize R&D-intensive firms by size, physical capital intensity, and whether they issued stocks in the United States, asking whether these features are associated with particular financing patterns. To address these issues, we present, for the first time, adjusted flow of funds charts that treat R&D expenses as a capital outlay (rather than an operating cost that reduces profits, as standard accounting principles prescribe). We also address the question of how R&D inputs should be measured - using R&D expenses or R&D personnel. We construct both expenditure- and personnel-based R&D measures for each firm in our sample, and investigate to what extent these measures are mutually consistent.     

On characterizing the probability of survival in a large competitive economy

We consider a Walrasian exchange economy in which an agent is characterized by a utility function, a random endowment vector, and a function that specifies the minimum expenditure necessary for survival at a given price system. If at any equilibrium price system, the income of the agent is no more than the minimum expenditure for survival, it is ruined. The main results characterize the probability of ruin when the number of agents is large. The implications of stochastic dependence among agents are explored.     

Equilibrium prices in a random exchange economy with dependent agents

Summary. This paper presents a model of a Walrasian exchange economy in which the preferences and endowments of the agents are random. Stochastic interaction among the agents is formally described in terms of dependency neighborhoods. The main result is a characterization of the distribution of market-clearing prices in a large economy. Received: April 23, 1999; revised version: May 6, 1999