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

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

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

Advanced actuators for the control of large space structures

The objective of this research was to develop advanced six-degree-of-freedom actuators employing magnetic suspensions suitable for the control of structural vibrations in large space structures. The advanced actuators consist of a magnetically suspended mass that has three-degrees-of-freedom in both translation and rotation. The most promising of these actuators featured a rotating suspended mass providing structural control torques in a manner similar to a control moment gyro (CMG). These actuators employ large-angle-magnetic suspensions that allow gimballing of the suspended mass without mechanical gimbals. Design definitions and sizing algorithms for these CMG type as well as angular reaction mass actuators based on multi-degree-of-freedom magnetic suspensions were developed. The performance of these actuators was analytically compared with conventional reaction mass actuators for a simple space structure model

The Effect of Schooling and Ability on Achievement Test Scores

This paper develops two methods for estimating the effect of schooling on achievement test scores that control for the endogeneity of schooling by postulating that both schooling and test scores are generated by a common unobserved latent ability. These methods are applied to data on schooling and test scores. Estimates from the two methods are in close agreement. We find that the effects of schooling on test scores are roughly linear across schooling levels. The effects of schooling on measured test scores are slightly larger for lower latent ability levels. We find that schooling increases the AFQT score on average between 2 and 4 percentage points, roughly twice as large as the effect claimed by Herrnstein and Murray (1994) but in agreement with estimates produced by Neal and Johnson (1996) andWinship and Korenman (1997). We extend the previous literature by estimating the impact of schooling on measured test scores at various quantiles of the latent ability distribution.