Comparison of older adult performance during the functional-reach and limits-of-stability tests

Despite widespread use of the functional-reach (FR) and limits-of-stability (LOS) tests, comparisons of postural strategies and postural limits for these tests have not been previously reported. The purpose of this study was to compare postural strategies as determined by cross-correlation analyses of trunk and lower leg angular displacements and postural limits as assessed by maximum center-of-gravity (COG) excursions as older adults at low fall risk completed the FR and LOS tests. Fourteen older adults completed three FR and LOS trials while standing on a Balance Master force platform. Results indicated that despite relatively similar instructions to reach or lean as far as possible without losing balance or altering the base of support, their performance differed with regard to postural strategies employed and maximum COG excursions produced. These findings suggest that because of differences in task constraints, FR and LOS tests should not be used interchangeably.     

Uncertainty and Variation in Indirect Exposure Assessments: An Analysis of Exposure to Tetrachlorodibenzo-p-Dioxin from a Beef Consumption Pathway

Indirect exposures to 2,3,7,8-tetrachlorodibenzo- p -dioxin (TCDD) and other toxic materials released in incinerator emissions have been identified as a significant concern for human health. As a result, regulatory agencies and researchers have developed specific approaches for evaluating exposures from indirect pathways. This paper presents a quantitative assessment of the effect of uncertainty and variation in exposure parameters on the resulting estimates of TCDD dose rates received by individuals indirectly exposed to incinerator emissions through the consumption of home-grown beef. The assessment uses a nested Monte Carlo model that separately characterizes uncertainty and variation in dose rate estimates. Uncertainty resulting from limited data on the fate and transport of TCDD are evaluated, and variations in estimated dose rates in the exposed population that result from location-specific parameters and individuals'behaviors are characterized. The analysis indicates that lifetime average daily dose rates for individuals living within 10 km of a hypothetical incinerator range over three orders of magnitude. In contrast, the uncertainty in the dose rate distribution appears to vary by less than one order of magnitude, based on the sources of uncertainty included in this analysis. Current guidance for predicting exposures from indirect exposure pathways was found to overestimate the intakes for typical and high-end individuals.     

Feasibility study for collecting alcohol and other drug use data among secondary school students: a web-based survey approach

This study examined the feasibility of using a Web-based survey to collect alcohol and other drug use data from secondary school students in an urban school district in the Midwest. A Web-based survey was self-administered by a random sample of 6th through 11th grade students in the spring of 2002. The final sample consisted of 1,536 secondary school students (781 women and 755 men). The sample was 57% White, 40% African American, and 3% from other racial and ethnic groups. Several indicators of data quality were examined including response rate, absenteeism, refusals, substantive data, and data processing time. The study achieved a response rate of 89.1%. The results of the present study provide evidence that a Web-based survey can be successfully implemented in an economically and racially diverse urban sample of secondary students. While researchers conducting survey research within secondary schools should consider using Web-based survey approaches, additional research is needed to compare Web-based surveys to more traditional approaches to collecting data.     

Evaluating child and youth homelessness

Following a review of approaches taken to generate accurate estimates of the scale of child and youth homelessness in America, this article documents the methods and results of a multipronged count of homeless children and youth in New Haven, Connecticut. The survey used in this count accessed demographics and service needs, and was administered on the streets and in a wide range of service provision settings. A total of 170 homeless families were located, comprised primarily of young, single, African American women and their children. These families included 323 children, suggesting an annual prevalence of 1,688 in this community. This work addresses the paucity of information on homeless children and youth located in small to midsized cities     

Stress and coping among older workers

Age-related changes in physical and cognitive abilities can raise adaptive challenges for older working adults. Older workers exhibit considerable capacity to manage and cope with the stress of job and environmental demands, but at some point, many can become overwhelmed, and find themselves at increased risk for health consequences, injury, disability, and diminished productivity. Older workers are, however, a highly heterogeneous population, and many continue to work safely and successfully. Employers are encouraged to join efforts to provide an optimal person-environment-fit for all of their employees, but with a sensitivity to the increased variability to be expected among older employees.     

Looking for the Holy Grail: Publishing and advertising strategies and contemporary men's magazines

Recent work in gender/queer theory has developed J. L. Austin's notion of performativity to account for the compulsive and repetitive construction of gender as a kind of ‘performance’. This work has failed to examine the role of ‘sound’ in Austin's theory, with important consequences for our understanding of the basis of such an ‘ordinary’ communicative event. This article compares the problems which Austin raises for the securing of communicative events through a concept of sound with the sound experiment in the 1970s pornographic film, The Opening of Misty Beethoven. By linking this complex filmic disruption of the interrelation between desire, sexual performance and sound with a non-Derridean exploration of Austin, this study suggests that theories of the communicative event can be much enriched by examining ideas underlying ‘ordinary sexual intercourse’.     

Autonomous Youth? Independence and Precariousness in the Indonesian Underground Music Scene

Indonesia boasts a thriving underground music scene that has become an important element in the identity practices of many urban youth. For dedicated ‘scenesters’, the underground is more than a personal expression of style; it is a way of life, and often a way to make a living. I draw on the concept of ‘precarity’ to examine the underground value of independence (kemandirian) in the context of the precarious position of urban youth in neoliberal Indonesia. The identities and practices of the underground scene are both a reaction against and a reflection of this experience. Scenesters draw on their underground identities, and the autonomous community networks they have established, in order to assert their independence from the demands of capital. However, they also mobilise this independence as the basis for their own entrepreneurial activities, resulting in a nascent tendency towards capital accumulation and class polarisation within the scene.     

Self-generated motives for gambling in two population-based samples of gamblers

In the present study, self-generated responses to a question regarding reasons for gambling from two epidemiological surveys were combined and placed into another earlier motivational model for alcohol use, adapted for gambling. Of the 3601 reasons, 954 could be categorised into the model's categories: (a) coping motives (internal, negative reinforcement); (b) enhancement motives (internal, positive reinforcement); and (c) social motives (external, positive reinforcement). Results indicate that coping gamblers experienced greater gambling severity and psychopathology, enhancement gamblers were most likely to gamble while intoxicated and social gamblers were more likely to choose socially-related gambling. An examination of remaining motives suggests additional categories may be warranted – specifically financial and charitable reasons. These findings offer some support for the model; however, it may need to be expanded to account for other motives. The study highlights the advantages and limitations of using self-generated reasons to study gambling motivation.