1,082 research outputs found

    The Role of Child Support Insurance in Antipoverty Policy

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    This article describes existing child support practice in the United States, giving attention to the establishment and enforcement of parental child support obligations as well as to publicly provided child support benefits. Effects of the current system on alleviating poverty are assessed. The article addresses several questions. Should low-income ab sent parents be excused from the obligation to support their children? Can child support provide more generous benefits to single-parent families while minimizing incentives for the formation of single-parent families? Should children in single-parent families be aided by a welfare program? What are the problems with the current child support system? Finally, a proposal for a new child support insurance system is described, along with estimates of the costs of the system and its effects on poverty and welfare dependence. The relationship of estimated benefits to costs is promising enough to warrant trying out the new system in selected jurisdictions.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/67275/2/10.1177_000271628547900108.pd

    The use of therapist rules, self rules, and contingency-shaped feedback in the treatment of social skills deficits in adults

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    Skinner added an important extension to his analysis of human behavior when he discussed the concept of rule-governed behavior. Contingency-shaped behavior is behavior under the control of past consequences. Rule-governed behavior, a subset of contingency-shaped behavior, is behavior under the control of a contingency-specifying stimulus. Although most behavior therapy with verbal, outpatient adults is rule-governed, several problems exist with rule-governed strategies. In most situations, one does not know which behaviors clients should modify. In addition, the human operant literature has shown that when behavior comes under the control of rules, it is less likely to come under the control of changing contingencies. This study attempted to compare rule-governed with contingency-shaped therapy programs in the treatment of assertive skills deficits in adults. 36 adults participated in an 8-session individual treatment program. Subjects role-played situations in which they were having difficulty behaving assertively. Subjects in one group were given instructions on the behaviors necessary to change to become more assertive. Subjects in a second group developed their own rules for how to act assertively. Subjects in a third group neither were given rules nor were they asked to develop their own rules. Some subjects in each of the above three groups were also given contingency-shaped feedback after role-playing. A seventh group served as a waiting-list control

    A view of physical education : perceptions of five classroom teachers

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    The purpose of this study was to gain insights into how classroom teachers 1 perceptions of physical education were formed and how these perceptions influenced their teaching of physical education. The research methodology used was semi-structured, open-ended interviews. The two primary sources of data were the interviews and a brief questionnaire. Five classroom teachers were engaged in a series of interviews that were tape-recorded and transcribed. Descriptive summaries that utilized the language and the meanings of the participants were written. The interview data were analyzed using the constant comparative method. The interview data suggest that classroom teachers 1 perceptions of physical education evolved over time. In this study, the participants elaborated on the intertwining of various influences

    Implications For The Hubble Constant from the First Seven Supernovae at z >= 0.35

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    The Supernova Cosmology Project has discovered over twenty-eight supernovae (SNe) at 0.35 <z < 0.65 in an ongoing program that uses Type Ia SNe as high-redshift distance indicators. Here we present measurements of the ratio between the locally observed and global Hubble constants, H_0^L/H_0^G, based on the first 7 SNe of this high-redshift data set compared with 18 SNe at z <= 0.1 from the Calan/Tololo survey. If Omega_M <= 1, then light-curve-width corrected SN magnitudes yield H_0^L/H_0^G < 1.10 (95% confidence level) in both a Lambda=0 and a flat universe. The analysis using the SNe Ia as standard candles without a light-curve-width correction yields similar results. These results rule out the hypothesis that the discrepant ages of the Universe derived from globular clusters and recent measurements of the Hubble constant are attributable to a locally underdense bubble. Using the Cepheid-distance-calibrated absolute magnitudes for SNe Ia of Sandage (1996}, we can also measure the global Hubble constant, H_0^G. If Omega_M >= 0.2, we find that H_0^G < 70 km/s/Mpc in a Lambda=0 universe and H_0^G < 78 km/s/Mpc in a flat universe, correcting the distant and local SN apparent magnitudes for light curve width. Lower results for H_0^G are obtained if the magnitudes are not width corrected.Comment: 13 pages, 2 Postscript figures. Preprint also available at http://www-supernova.lbl.gov . To appear in ApJ Letter

    Characterization of the HD 17156 planetary system

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    AIMS : To improve the parameters of the HD 17156 system (peculiar due to the eccentric and long orbital period of its transiting planet) and constrain the presence of stellar companions. METHODS : Photometric data were acquired for 4 transits, and high precision radial velocity measurements were simultaneously acquired with SARG@TNG for one transit. The template spectra of HD 17156 was used to derive effective temperature, gravity, and metallicity. A fit of the photometric and spectroscopic data was performed to measure the stellar and planetary radii, and the spin-orbit alignment. Planet orbital elements and ephemeris were derived from the fit. Near infrared adaptive optic images was acquired with ADOPT@TNG. RESULTS: We have found that the star has a radius of R_S = 1.43+/-0.03 R_sun and the planet R_P =1.02+/-0.08 R_jup. The transit ephemeris is T_c = 2454\756.73134+/-0.00020+N*21.21663+/-0.00045 BJD. The analysis of the Rossiter-Mclaughlin effect shows that the system is spin orbit aligned with an angle lambda = 4.8 +/- 5.3 deg. The analysis of high resolution images has not revealed any stellar companion with projected separation between 150 and 1000 AU from HD 17156.Comment: submitted to A&

    Natural T cell–mediated protection against seasonal and pandemic Influenza: results of the Flu Watch cohort study

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    Rationale: A high proportion of influenza infections are asymptomatic. Animal and human challenge studies and observational studies suggest T cells protect against disease among those infected, but the impact of T-cell immunity at the population level is unknown. Objectives: To investigate whether naturally preexisting T-cell responses targeting highly conserved internal influenza proteins could provide cross-protective immunity against pandemic and seasonal influenza. Methods: We quantified influenza A(H3N2) virus–specific T cells in a population cohort during seasonal and pandemic periods between 2006 and 2010. Follow-up included paired serology, symptom reporting, and polymerase chain reaction (PCR) investigation of symptomatic cases. Measurements and Main Results: A total of 1,414 unvaccinated individuals had baseline T-cell measurements (1,703 participant observation sets). T-cell responses to A(H3N2) virus nucleoprotein (NP) dominated and strongly cross-reacted with A(H1N1)pdm09 NP (P < 0.001) in participants lacking antibody to A(H1N1)pdm09. Comparison of paired preseason and post-season sera (1,431 sets) showed 205 (14%) had evidence of infection based on fourfold influenza antibody titer rises. The presence of NP-specific T cells before exposure to virus correlated with less symptomatic, PCR-positive influenza A (overall adjusted odds ratio, 0.27; 95% confidence interval, 0.11–0.68; P = 0.005, during pandemic [P = 0.047] and seasonal [P = 0.049] periods). Protection was independent of baseline antibodies. Influenza-specific T-cell responses were detected in 43%, indicating a substantial population impact. Conclusions: Naturally occurring cross-protective T-cell immunity protects against symptomatic PCR-confirmed disease in those with evidence of infection and helps to explain why many infections do not cause symptoms. Vaccines stimulating T cells may provide important cross-protective immunity

    A social licence for science: capturing the public or co-constructing research?

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    The “social licence to operate” has been invoked in science policy discussions including the 2007 Universal Ethical Code for scientists issued by the UK Government Office for Science. Drawing from sociological research on social licence and STS interventions in science policy, the authors explore the relevance of expectations of a social licence for scientific research and scientific contributions to public decision-making, and what might be involved in seeking to create one. The process of seeking a social licence is not the same as trying to create public or community acceptance for a project whose boundaries and aims have already been fully defined prior to engagement. Such attempts to “capture” the public might be successful from time to time but their legitimacy is open to question especially where their engagement with alternative research futures is “thin”. Contrasting a national dialogue on stem cells with the early history of research into bioenergy, we argue that social licence activities need to be open to a “thicker” engagement with the social. Co-constructing a licence suggests a reciprocal relationship between the social and the scientific with obligations for public and private institutions that shape and are shaped by science, rather than just science alone

    Why health visiting? Examining the potential public health benefits from health visiting practice within a universal service: A narrative review of the literature

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    INTRODUCTION: There is increasing international interest in universal, health promoting services for pregnancy and the first three years of life and the concept of proportionate universalism. Drawing on a narrative review of literature, this paper explores mechanisms by which such services might contribute to health improvement and reducing health inequalities. OBJECTIVES: Through a narrative review of empirical literature, to identify: DESIGN: The paper draws upon a scoping study and narrative review. REVIEW METHODS: We used three complementary approaches to search the widely dispersed literature: Our key inclusion criterion was information about health visiting practice. We included empirical papers from United Kingdom (UK) from 2004 to February 2012 and older seminal papers identified in search (3), identifying a total of 348 papers for inclusion. A thematic content analysis compared the older (up to 2003) with more recent research (2004 onwards). RESULTS: The analysis revealed health visiting practice as potentially characterized by a particular 'orientation to practice.' This embodied the values, skills and attitudes needed to deliver universal health visiting services through salutogenesis (health creation), person-centredness (human valuing) and viewing the person in situation (human ecology). Research about health visiting actions focuses on home visiting, needs assessment and parent-health visitor relationships. The detailed description of health visitors' skills, attitudes, values, and their application in practice, provides an explanation of how universal provision can potentially help to promote health and shift the social gradient of health inequalities. CONCLUSIONS: Identification of needs across an undifferentiated, universal caseload, combined with an outreach style that enhances uptake of needed services and appropriate health or parenting information, creates opportunities for parents who may otherwise have remained unaware of, or unwilling to engage with such provision. There is a lack of evaluative research about health visiting practice, service organization or universal health visiting as potential mechanisms for promoting health and reducing health inequalities. This paper offers a potential foundation for such research in future

    Pocketome: an encyclopedia of small-molecule binding sites in 4D

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    The importance of binding site plasticity in protein–ligand interactions is well-recognized, and so are the difficulties in predicting the nature and the degree of this plasticity by computational means. To assist in understanding the flexible protein–ligand interactions, we constructed the Pocketome, an encyclopedia of about one thousand experimentally solved conformational ensembles of druggable binding sites in proteins, grouped by location and consistent chain/cofactor composition. The multiplicity of pockets within the ensembles adds an extra, fourth dimension to the Pocketome entry data. Within each ensemble, the pockets were carefully classified by the degree of their pairwise similarity and compatibility with different ligands. The core of the Pocketome is derived regularly and automatically from the current releases of the Protein Data Bank and the Uniprot Knowledgebase; this core is complemented by entries built from manually provided seed ligand locations. The Pocketome website (www.pocketome.org) allows searching for the sites of interest, analysis of conformational clusters, important residues, binding compatibility matrices and interactive visualization of the ensembles using the ActiveICM web browser plugin. The Pocketome collection can be used to build multi-conformational docking and 3D activity models as well as to design cross-docking and virtual ligand screening benchmarks

    Health risks from environmental degradation in the Niger Delta, Nigeria

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    © The Author(s) 2016. Local communities within oil producing countries in Africa often face formidable environmental challenges that generate conflicts and concerns around exploitation, environmental impact, and health risks. A key feature of these concerns has been the paucity of effective risk communication mechanisms and the impact this has on the public understanding of risk. Risk communication has been identified as a significant factor in explaining why the health consequences of environmental degradation remain unabated in oil producing communities. This paper evaluates health risk communication in the oil rich Niger Delta region of Nigeria. The study is based on 69 interviews conducted in the Niger Delta region. The paper argues that the health of the local population is being impaired by risk incidences relating to oil and gas exploration activities, the effects of which are amplified by inadequate communication of health risks to the public. The study argues for and suggests ways in which health risk communication processes can be improved in the Niger Delta. A multi-dimensional framework for public health risk communication is developed as a means of advancing understanding, practice, and policy
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