Analysis of the relationship between air pollution and asthma

In recent years, considerable attention has been devoted to methods for analyzing longitudinal data. A review of some of the issues surrounding the use of regression analysis is undertaken as they relate to a study of the health effects of air pollution in a group of asthmatics. Daily diary recordings of hours with asthma symptoms are found to be positively related to the daily mean concentration of total reduced sulphur as well as to the daily intake of nonsteroidal drug medication. This finding is corroborated using three different statistical models.     

红仁食品公司的战略绩效管理体系

为什么有些企业的各个部门明明建立了完备的绩效管理体系,个人也达到了考核指标,但是企业整体绩效仍未改善?问题的原因是绩效管理体系与企业的战略和目标脱节。卡普兰和诺顿发明的平衡计分卡提供了一个战略实施的框架,使公司能够将战略与绩效管理紧密联系起来。     

Resistance in Marital Therapy*

This paper offers a conceptual approach as well as examples of resistance to marital therapy. It is aimed at beginning marital clinicians to provide an understanding of the natural existence of resistance to therapeutic change. A model which conceptualizes resistance based on two divergent emotions is presented. This model can aid the clinician in assessing each individual's willingness to improve throughout the process of therapy. The examples of marital resistance may aid clinicians to be more aware of the forms which resistance can take.     

Understanding the link between poverty and food insecurity among children: Does the definition of poverty matter?

This paper examines the association between poverty and food insecurity among children, using two different definitions of poverty – the official poverty measure (OPM) and the new supplemental poverty measure (SPM) of the Census Bureau, which is based on a more inclusive definition of family resources and needs. Our analysis is based on data from the 2001–2011 Current Population Survey and shows that food insecurity and very low food security among children decline as income-to-needs ratio increases. The point estimates show that the associations are stronger as measured by the new supplemental measure of income-to-needs ratio than when estimated through the official measure. Statistical tests reject the hypothesis that poor households' odds of experiencing low food security are the same whether the SPM or OPM measure is used; but the tests do not reject the hypothesis when very low food security is the outcome.     

The cost of accidental death: A capital market approach

This article analyzes the effect of accidental deaths involving either a firm's workplace or product on the firm's shareholder equity. Significant and sustained losses were found, reaching a peak of over $50 million per fatality during the second week following an accident. The variation in the cumulative percentage loss to the firms due to the accidents is explained by the number of deaths per accident and the riskiness of the product or workplace—the lower the a priori perceived riskiness, the greater the decline in equity.