Familial Risk for Exceptional Longevity

One of the most glaring deficiencies in the current assessment of mortality risk is the lack of information concerning the impact of familial longevity. In this article we update estimates of sibling relative risk of living to extreme ages using data from more than 1700 sibships, and we begin to examine the trend for heritability for different birth-year cohorts. We also build a network model that can be used to compute the increased chance for exceptional longevity of a subject, conditional on his or her family history of longevity. The network includes familial longevity from three generations and can be used to understand the effects of paternal and maternal longevity on an individual's chance to live to an extreme age.     

An analysis of process industry production and inventory management systems

The process industries — those firms that add value by mixing, separating, forming and/or chemical reactions by either batch or continuous mode — continue to lag behind the discrete industries in the identification and implementation of effective production and inventory management (P&IM) techniques. A contributing factor is that the process industries have traditionally been lumped together and contrasted from the discrete industries as a whole, thus leading to misunderstandings regarding individual process industries. From site interviews and the literature, we identified four critical dimensions — planning resource requirements (for materials and capacity), tracking resource consumption, control of work-in-process (WIP), and degree of computerization — represented by seven variables by which to contrast and analyze process industries. Based on in-depth field studies of 19 diverse process plants, we find that there exist at least four distinct types of process industry P&IM systems: (1) simple, (2) common, (3) WIP-controlled, and (4) computerized.     

外资凶猛增兵中国

虽然对中国经济有减速预期，但考虑到其速度仍将是美国的三倍，美国公司毅然决定加码中国。     

Environmental Protection,Agency Motivations,and Rent Extraction: The Regulation of Water Pollution in Louisiana

Direct environmental regulation has been in place in the United States for more than twenty-five years. Yet there has been little study of what actually affects regulatory enforcement levels. This study examines enforcement issues by focusing on water quality enforcement by the Louisiana Department of Environmental Quality. The study finds that penalties are more likely to occur, and are likely to be higher, the more serious a firm's violation of a regulation. Penalties are also more likely, and likely to be higher, if a firm has a previous record of environmental violations. In contrast to other studies, however, we do not find that enforcement varies across regional offices. In addition, we did not find any systematic effects of the Weingast and Moran (1983) theory of legislative dominance. We did, however, find evidence of rent extraction, along the lines of McChesney (1987; 1991).     

Environmental strategies in the paint and coatings industry

In general, a proactive strategy entails an anticipatory approach to problems. It is also associated with taking the initiative and doing more than is strictly needed. The nature of proactivity that businesses may display with respect to the environment is considered and also its meaning in terms of strategic behaviour and technological development. A conceptual framework is developed that differentiates between types of proactive strategies. This framework is based on a study of the paint and coatings industry in Great Britain and the Netherlands and is applicable to both countries. Even though the big international paint companies play a decisive role in the development and introduction of cleaner technologies, it is argued that the small- and medium-sized paint companies deserve special attention. Not only is proactive behaviour by the big companies important, but also proactive strategies by the small- and medium-sized companies, even if they are limited in scope, because the latter determine at national and local levels the pace and nature of the transformation that has to take place to produce a sustainable economy. This process is crucial to ecological modernization if it is intended not only to get rid of old-fashioned ways, but also to create new opportunities for economic upgrading and rejuvenation.     

A grant rationing model for a health care system.

Most public health programs are created through a political process and the health administrator's resource allocation decision is influenced not only by the relative performance of the subunits but also by political considerations. This paper presents a goal programming model for rationing available grants to competing health care subunits on the basis of performance subject to resource and political constraints. Performance is defined in terms of output adjusted for non-compliance on the identified quality of care and administrative efficiency criteria. The quality and efficiency criteria are those specified by the Federal agency as amended by local funding authorities and subunit administrators through a Delphi process. The model has the advantage of flexibility and can be easily adapted to suit prevailing financial and political conditions. In particular, it can be used as a viable analytical tool in health care and other public service agencies where political considerations are important in resource allocation decisions.     

Changes in Implicit Prices of Prairie Pothole Habitat

I estimate changes in agricultural land value discounts due to prairie pothole habitat. The implicit prices of pothole habitat acreage are estimated from a series of hedonic models using Manitoba agricultural land transaction data from 1990 to 2009. I find that the discount on wetland acreage increased by at least 40%, suggesting that significant unanticipated increases in the benefits of converting wetlands emerged over the course of the study period. I also estimate a series of quantile regression hedonic models. The quantile regression models indicate that the land value discounts on prairie pothole acreage as a percent of per acre sales prices are constant across the land value distribution. These results have implications for the design of habitat conservation programs, particularly those involving long‐term agreements between landowners and conservation agencies.     

Mecro‐Economic Voting: Local Information and Micro‐Perceptions of the Macro‐Economy

We develop an incomplete information theory of economic voting, where voters' information about macro‐economic performance is determined by the economic conditions of people similar to themselves. We test our theory using both cross‐sectional and time‐series survey data. A novel survey instrument that asks respondents their numerical assessment of the unemployment rate confirms that individuals' economic information responds to the economic conditions of people similar to themselves. Furthermore, these assessments are correlated with individuals' vote choices. We also show in time‐series data that state unemployment robustly correlates with evaluations of national economic conditions, and presidential support.