Effects of Subsurface Drainage on Pavement Performance

This report evaluates the effects of subsurface drainage features on pavement performance through a program of inspection and testing of the subsurface drainage features present in the Long-Term Pavement Performance (LTPP) SPS-1 and SPS-2 field sections. The report will be of particular interest to engineers in the public and private sectors with responsibility for the design, construction, and rehabilitation of highway pavements

PREVENTION AND TREATMENT IN FOOD SAFETY: AN ANALYSIS OF CONCEPTUAL ISSUES

Foodborne illness, damage functions, optimal regulation, Food Consumption/Nutrition/Food Safety,

RATIONAL ROOTS OF "IRRATIONAL" BEHAVIOR: NEW THEORIES OF ECONOMIC DECISION-MAKING

The neoclassical paradigm has proven to be a rich approach for evaluating a variety of issues for individual and social decision-making. However, an increasing body of literature suggests that actual behavior systematically violates the neoclassical utility model. This paper reviews a number of alternative models for decision-making. Results from the literature show several examples of apparently "irrational" behavior that can be explained in terms of these alternative motivations. The paper also extends the received literature by examining in some detail the implications of one such model which is based on the psychological feeling of ambivalence. The paper demonstrates that ambivalence has the potential for explaining the appearance of intransitive choices, the use of rules of thumb in decision-making and the large discrepancies between stated willingness-to-pay and willingness-to-accept, all of which have been observed in various settings. There are potentially great rewards from innovative research that expands the neoclassical paradigm to incorporate additional motivational factors in decision-making.Institutional and Behavioral Economics,

Emergency department use among Asian adults living in the United States: Results from the National Health Interview Survey (2006 – 2013)

This paper presents secondary analyses of the National Health Interview Survey data focused on emergency department (ED) utilization among Asian adults residing in the United States. National Health Interview Survey data provided from survey years 2006-2013 was pooled and disaggregated by single-race Asian ethnic subgroups (Filipino, Chinese, Asian Indian, other Asian). We explored trends in reports of an ED visit over the survey years for the purpose of determining whether reports of an ED visit increased or decreased over survey years. We also explored background/biologic, environment, access to care, and behavior factors and their associations with having an ED visit. The majority of respondents were foreign-born (75.9%) and had lived in the United States for ten or more years (54.3%). Estimates for reports of any ED visits ranged from 8.3% for the Chinese to 15.3% for the Filipino subgroups. Filipinos were more likely to have an ED visit compared to the Chinese and other Asians (except Asian Indians). For the eight years of survey data, estimates indicate a trend of fewer reports of any ED visit among the Asian Indian and Filipino subgroups. Among Filipinos, having diabetes and a smoking history were associated with an ED visit. The odds of an ED visit were higher among Asians in the youngest age category, among other Asians born in the United States, and among those who saw/talked to a mental health professional within the previous year. As there is a paucity of information available about ED use among Asians or Asian subgroups, this report adds to the literature on patterns of health care utilization among Asian subgroups living in the United States with a specific focus on ED utilization

THE ECOLOGY OF MUTUALISM

Elementary ecology texts tell us that organisms interact in three fundamen­ tal ways, generally given the names competition, predation, and mutualism. The third member has gotten short shrift (264), and even its name is not generally agreed on. Terms that may be considered synonyms, in whole or part, are symbiosis, commensalism, cooperation, protocooperation, mutual aid, facilitation, reciprocal altruism, and entraide. We use the term mutual­ism, defined as an interaction between species that is beneficial to both, since it has both historical priority (311) and general currency. Symbiosis is the living together of two organisms in close association, and modifiers are used to specify dependence on the interaction (facultative or obligate) and the range of species that can take part (oligophilic or polyphilic). We make the normal apologies concerning forcing continuous variation and diverse interactions into simple dichotomous classifications, for these and all subsequent definitions