The Assessment of Radiation Exposures in Native American Communities from Nuclear Weapons Testing in Nevada

Native Americans residing in a broad region downwind from the Nevada Test Site during the 1950s and 1960s received significant radiation exposures from nuclear weapons testing. Because of differences in diet, activities, and housing, their radiation exposures are only very imperfectly represented in the Department of Energy dose reconstructions. There are important missing pathways, including exposures to radioactive iodine from eating small game. The dose reconstruction model assumptions about cattle feeding practices across a year are unlikely to apply to the native communities as are other model assumptions about diet. Thus exposures from drinking milk and eating vegetables have not yet been properly estimated for these communities. Through consultations with members of the affected communities, these deficiencies could be corrected and the dose reconstruction extended to Native Americans. An illustration of the feasibility of extending the dose reconstruction is provided by a sample calculation to estimate radiation exposures to the thyroid from eating radio-iodine-contaminated rabbit thyroids after the Sedan test. The illustration is continued with a discussion of how the calculation results may be used to make estimates for other tests and other locations.     

International labour standards: Recent developments in complementarity between the international and national supervisory systems

Far from competing against one another, the national and international systems of labour regulation are interlocked. ILO standards have been used in recent rulings by the highest jurisdictions of some countries. Examining two decisions by the Supreme Court of Canada and another by the Paris Court of Appeal, the authors clarify the circumstances in which national courts make use of these international sources of law and consequent legal implications. The cases involve proceedings before national courts and ILO bodies, and France and Canada also have different legal cultures, enabling a discussion of how national jurisdictions actually appropriate international labour standards.     

MIDAS Regressions: Further Results and New Directions

We explore mixed data sampling (henceforth MIDAS) regression models. The regressions involve time series data sampled at different frequencies. Volatility and related processes are our prime focus, though the regression method has wider applications in macroeconomics and finance, among other areas. The regressions combine recent developments regarding estimation of volatility and a not-so-recent literature on distributed lag models. We study various lag structures to parameterize parsimoniously the regressions and relate them to existing models. We also propose several new extensions of the MIDAS framework. The paper concludes with an empirical section where we provide further evidence and new results on the risk-return trade-off. We also report empirical evidence on microstructure noise and volatility forecasting.     

Civic Culture Meets the Digital Divide: The Role of Community Electronic Networks

The concept of social capital reflects the norms and social relations embedded in the social structure of societies that enable people to coordinate community action to achieve desired goals. Our research focuses on the role that norms of cooperation and civic and political culture play in addressing the "digital divide" in computer use and Internet access. We review evidence from mail surveys of randomly selected respondents in two rural Minnesota communities as well as qualitative focus group and archival evidence suggesting that the communities have adopted different approaches to technology diffusion. Whether information technology is viewed as a public or private good depends in part on the civic culture of a community.     

Effective organizational control: A framework, applications, and implications

This article by Eric Flamholtz provides a framework for understanding the nature, role, functioning, design, and effects of organizational control systems. It represents a model of control which can be used to make this process more visible in organizations. It illustrates the practical applications of the model, and suggests its implications for corporate and human resource management as well as for scholars.     

The Social Consequences of Participating in the Ethnic Economy1

This study examines the effects of working in ethnic economy on social integration of immigrants. The analysis is based on a recently completed survey of the Chinese ethnic economy in Toronto. Our findings show that working in ethnic economies hampers participation in the social activities of the wider society. Results also suggest that those who gave a favorable evaluation of their own group, those who are independent class and family class immigrants have a higher likelihood of participation in social activities in the wider society. However, if those immigrants participate in an ethnic economy, they have significantly less participation in social activities in the wider society. Although previous research has documented that employment in ethnic economy is an “alternative avenue” for immigrants to achieve economic advancement in a new country, our study suggests that the social cost is substantial.     

Convergent validity of personal space measures: Consistent results with low intercorrelations

Low correlations among personal space measures have been used as evidence against their convergent validity. This argument is analyzed and found limited to personality trait assumptions. Convergent validity more generally concerns whether findings from one measure generalize to other measures. In the present study 91 subjects completed three measures (a disguised interaction distance, figure placement distances, and the Comfortable Interpersonal Distance Scale) under different conditions of subject sex, sex of the other person, and acquaintance with the other person. The three measures showed an average intercorrelation ofr = .034, but consistent significant effects of acquaintance. These findings demonstrate that convergence of findings may be obtained even when measures are not highly correlated. The search for convergent validity should concentrate on the generalizability of findings rather than correlations among measures.