3,213 research outputs found

    Perspectives about occupational justice: can poverty and occupational deprivation influence child development?

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    In this paper we will explore the concept of occupational justice, a term that describes a basic human right to have the opportunities and rights to participate in those activities and occupations that define us as individuals, family and community members by providing meaning and purpose to our lives. Conditions of poverty preclude the ability to participate in a wide range of activities and occupations that support well-being. An anticipated outcome of our paper is to explore how poverty negatively influences engagement in those activities and occupations that support health, productivity and life satisfaction

    Chandra Observation of the Radio Source / X-ray Gas Interaction in the Cooling Flow Cluster Abell 2052

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    We present a Chandra observation of Abell 2052, a cooling flow cluster with a central cD that hosts the complex radio source 3C 317. The data reveal ``holes'' in the X-ray emission that are coincident with the radio lobes. The holes are surrounded by bright ``shells'' of X-ray emission. The data are consistent with the radio source displacing and compressing, and at the same time being confined by, the X-ray gas. The compression of the X-ray shells appears to have been relatively gentle and, at most, slightly transonic. The pressure in the X-ray gas (the shells and surrounding cooler gas) is approximately an order of magnitude higher than the minimum pressure derived for the radio source, suggesting that an additional source of pressure is needed to support the radio plasma. The compression of the X-ray shells has speeded up the cooling of the shells, and optical emission line filaments are found coincident with the brightest regions of the shells.Comment: accepted for publication in ApJ Letters; for high-resolution color figures, see http://www.astro.virginia.edu/~elb6n/abell2052.htm

    The Role of GIS to Enable Public-Sector Decision Making Under Conditions of Uncertainty

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    Uncertainty is inherent in environmental planning and decision making. For example, water managers in arid regions are attuned to the uncertainty of water supply due to prolonged periods of drought. To contend with multiple sources and forms of uncertainty, resource managers implement strategies and tools to aid in the exploration and interpretation of data and scenarios. Various GIS capabilities, such as statistical analysis, modeling and visualization are available to decision makers who face the challenge of making decisions under conditions of deep uncertainty. While significant research has lead to the inclusion and representation of uncertainty in GIS, existing GIS literature does not address how decision makers implement and utilize GIS as an assistive technology to contend with deep uncertainty. We address this gap through a case study of water managers in the Phoenix Metropolitan Area, examining how they engage with GIS in making decisions and coping with uncertainty. Findings of a qualitative analysis of water mangers reveal the need to distinguish between implicit and explicit uncertainty. Implicit uncertainty is linked to the decision-making process, and while understood, it is not displayed or revealed separately from the data. In contrast, explicit uncertainty is conceived as separate from the process and is something that can be described or displayed. Developed from twelve interviews with Phoenix-area water managers in 2005, these distinctions of uncertainty clarify the use of GIS in decision making. Findings show that managers use the products of GIS for exploring uncertainty (e.g., cartographic products). Uncertainty visualization emerged as a current practice, but definitions of what constitutes such visualizations were not consistent across decision makers. Additionally, uncertainty was a common and even sometimes helpful element of decision making; rather than being a hindrance, it is seen as an essential component of the process. These findings contradict prior research relating to uncertainty visualization where decision makers often express discomfort with the presence of uncertainty.

    Public Service Training of Student Assistants at Reference Desks in ARL Libraries

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    This study details a web based survey of the Heads of Reference at member institutions of the Association Research Libraries. The survey was conducted to determine the methods of training used by large academic reference desks in instilling the institutional public service ethic in student assistants. The research indicates that librarians at ARL reference desks who use student assistants are concerned with proper public service training, and that monetary and time constraints have prevented them from developing training in this area to its fullest extent

    The Developement of an Educational Program in Iowa State Parks

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    The first state park was created in 1918; consequently the state park educational program is of recent development. Although the educational program and the development of a park system by the state is relatively new, the idea of state-owned lands for recreational purposes is almost as old as our statehood. T. S. Parvin, registrar of lands back in the fifties, advocated in one of his reports that the state should buy a large tract of land in Des Moines to preserve the statehouse ground, for in time the state would need it for recreational purposes. It is evident now that Parvin was at least a half century ahead of his time, because the act providing for the establishment of state parks was passed by the Thirty-seventh General Assembly in 1917

    Are steroid injections effective for tenosynovitis of the hand?

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    Yes. Steroid injections are an effective first-line therapy for flexor tenosynovitis of the hand, with a number needed to treat [NNT] of 2.3 for injection of steroids and lidocaine (strength of recommendation [SOR]: B, based on 1 prospective RCT and low- quality studies). Injection into the tendon sheath may not be critical to a successful outcome (SOR: B, based on 1 prospective uncontrolled trial)

    “All the Men Here Have the Peter Pan Syndrome— They Don’t Want to Grow Up”: Navajo Adolescent Mothers’ Intimate Partner Relationships—A 15-Year Perspective

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    In 1992 and 1995, data were collected from 29 Navajo Native American adolescent mothers. In 2007 and 2008, data were collected from 21 of the original 29 (72%). Guided by feminist family theory, this investigation sought to (a) examine Navajo adolescent mothers’ intimate partner relationships during the transition to parenthood, (b) identify themes in the young mothers’ intimate partnerships across time, and (c) assess participants’ psychosocial well-being in adulthood. Four themes emerged in the women’s long-term intimate relationships: limited support, substance abuse, infidelity, and intimate partner violence. Implications of the findings and suggestions for future research are discussed

    Systematic Review and Meta-Analysis of Sex Differences in Social Contact Patterns and Implications for Tuberculosis Transmission and Control.

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    Social contact patterns might contribute to excess burden of tuberculosis in men. We conducted a study of social contact surveys to evaluate contact patterns relevant to tuberculosis transmission. Available data describe 21 surveys in 17 countries and show profound differences in sex-based and age-based patterns of contact. Adults reported more adult contacts than children. Children preferentially mixed with women in all surveys (median sex assortativity 58%, interquartile range [IQR] 57%-59% for boys, 61% [IQR 60%-63%] for girls). Men and women reported sex-assortative mixing in 80% and 95% of surveys (median sex assortativity 56% [IQR 54%-58%] for men, 59% [IQR 57%-63%] for women). Sex-specific patterns of contact with adults were similar at home and outside the home for children; adults reported greater sex assortativity outside the home in most surveys. Sex assortativity in adult contacts likely contributes to sex disparities in adult tuberculosis burden by amplifying incidence among men

    Extracting Information from Adaptive Control Experiments

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    Optical control of chemical reactivity is achieved through the use of photonic reagents, that is, “shaped” ultrafast optical pulses created using a pulse shaper. It has been demonstrated in a number of molecular systems that these pulses can effectively guide the system into a desired final state. Effective pulses are often found through an experimental search involving thousands of individual measurements. An examination of the pulses tested in these experiments can reveal the pulse features responsible for control and also the underlying molecular dynamics. In this article we review attempts to extract information from optical control experiments using adaptive learning algorithms to search the available parameter space, and we discuss how these kinds of experiments can be used to achieve and understand multiphoton optical control.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/91361/1/397_ftp.pd
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