546 research outputs found

    Copper cable theft: revisiting the price–theft hypothesis

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    Objectives: To test the commonly espoused but little examined hypothesis that fluctuations in the price of metal are associated with changes in the volume of metal theft. Specifically, we analyze the relationship between the price of copper and the number of police recorded 'live’ copper cable thefts from the British railway network (2006 to 2012)

    500 TeV gamma rays from Hercules X-1

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    A signal (chance probability = .0002) with the 1.24 s period of Hercules X-1 has been observed using the Utah Fly's Eye. The signal's relatively long period and high shower energy conflict with some popular models of particle acceleration by pulsars. Optical and X-ray data suggest a picture in which energetic particles produce multi-TeV gamma rays by collisions with Hercules X-1's accretion disk

    Older adults experiences of rehabilitation in acute health care

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    Rehabilitation is a key component of nursing and allied healthcare professionals’ roles in most health and social care settings. This paper reports on stage 2 of an action research project to ascertain older adult's experience of rehabilitation. Twenty postdischarge interviews were conducted and the interview transcripts were analysed using thematic content analysis. All older adults discharged from an acute older acute rehabilitation ward to their own homes in the community were eligible to participate. The only exclusion criterion was older adults who were thought to be unable to give consent to participate by the nurse in charge and the researcher. Whilst 92 older adults were eligible to participate in this research study, only 20 were interviewed. The findings from this study suggest that older adults valued communication with health professionals but were aware of their time constraints that hindered communication. This study suggests that both nurses and allied health professionals are not actively providing rehabilitative services to promote health and well-being, which contradicts the focus of active ageing. Furthermore, there was evidence of unmet needs on discharge, and older adults unable to recall the professions that were involved in their interventions and the rationale for therapy input. It is suggested that further research is needed to explore the effectiveness of allied health rehabilitation in the acute setting. This study highlights the need for further research into older adults’ perceptions of the rehabilitation process in the acute setting

    The SUSY EW-like corrections to top pair production in photon-photon collisions

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    We studied the one-loop contributions of the gaugino-Higgsino-sector to the process of top-pair production via γγ\gamma \gamma fusion at NLC in frame of the Minimal Supersymmetric Model(MSSM). We find that the corrections to γγttˉ\gamma \gamma \to t\bar{t} and e+eγγttˉe^+ e^- \to \gamma \gamma \to t\bar{t} are found to be significant and can approach to a few percent and one percent, respectively. Furthermore, the dependences of the corrections on the supersymmetric parameters are also investigated. The corrections are not sensitive to MSU(2)M_{SU(2)} (or μ|\mu|) when MSU(2) >> μM_{SU(2)}~>>~|\mu| (or μ >> MSU(2)|\mu|~>>~M_{SU(2)}) and are weakly dependent on the tanβ\tan{\beta} with MQM_Q (or μ|\mu|) being large enough. But they are sensitive to the c.m.s. energy of the incoming photons.Comment: LaTex, 33 pages, 8 Eps figuer

    Hadronic observables from SIS to SPS energies - anything strange with strangeness ?

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    We calculate p,π±,K±p, \pi^\pm, K^\pm and Λ\Lambda(+Σ0\Sigma^0) rapidity distributions and compare to experimental data from SIS to SPS energies within the UrQMD and HSD transport approaches that are both based on string, quark, diquark (q,qˉ,qq,qˉqˉq, \bar{q}, qq, \bar{q}\bar{q}) and hadronic degrees of freedom. The two transport models do not include any explicit phase transition to a quark-gluon plasma (QGP). It is found that both approaches agree rather well with each other and with the experimental rapidity distributions for protons, Λ\Lambda's, π±\pi^\pm and K±K^\pm. Inspite of this apparent agreement both transport models fail to reproduce the maximum in the excitation function for the ratio K+/π+K^+/\pi^+ found experimentally between 11 and 40 A\cdotGeV. A comparison to the various experimental data shows that this 'failure' is dominantly due to an insufficient description of pion rapidity distributions rather than missing 'strangeness'. The modest differences in the transport model results -- on the other hand -- can be attributed to different implementations of string formation and fragmentation, that are not sufficiently controlled by experimental data for the 'elementary' reactions in vacuum.Comment: 46 pages, including 15 eps figures, to be published in Phys. Rev.

    Pion Production from Baked-Alaska Disoriented Chiral Condensate

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    We study the various stages of the evolution of chiral condensates disoriented via the ``baked-alaska'' mechanism, in which the condensates are described as the products of external sources localized on the light cone. Our analysis is based on the classical equations of motion of either the linear or the nonlinear sigma model. We use the associated framework of coherent states and, especially, their source functions to make the connection to the distribution functions for the produced particles. We also compare our classical approach with a mean-field calculation which includes a certain class of quantum corrections.Comment: replaced to correct misspelling of author's nam

    Going Solo: findings from a survey of women ageing without a partner and who do not have children

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    Greater longevity in the UK population has led to the increasing diversity of women experiencing ageing in a multitude of ways. Internationally gender inequalities within ageing are still relatively invisible within both government policy and everyday life for particular groups of women. This paper explores the concept of women growing older ‘solo’ by which we mean women who find themselves non partnered and ageing without children as they move into later life. We report on the findings from a mixed-methods survey of 76 solo women in the UK aged 50 years and over, used to provide a broader overview of the issues and challenges they face as they move into later life. Qualitative data from the survey captured respondents’ perspectives about the links between their relationships status and wellbeing in later life and highlighted specific cumulative disadvantages emerging for some women as a result of their solo lifestyles. We discuss two key themes were identified; ‘solo-loneliness’ and ‘meaningful futures’ in conjunction with the relevant literature and make suggestions for future research within gender and ageing studies that could enhance more positive approaches to solo lifestyles

    Congressional Surveillance

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    In recent years, Congress has increasingly used electronic surveillance in high profile investigations. Reactions to what this Article calls “congressional surveillance” indicate a deep unease among both legal scholars and the broader public about the nature of Congress’s surveillance authority and its normative implications. Despite our ongoing preoccupation with government surveillance, congressional surveillance remains largely unexplored. There is virtually no discussion of how congressional surveillance is treated under key statutory and Fourth Amendment constraints; no consideration of the process or political limits of congressional surveillance; and little scrutiny of congressional surveillance as a tool within the separation of powers. This Article fills that gap by presenting the first scholarly treatment of congressional surveillance. It argues that to address congressional surveillance, we must first understand its hybrid features of both government surveillance and congressional political power. Specifically, the Article makes two contributions. First, the Article argues that congressional surveillance operates under fundamentally different constraints than traditional government surveillance. Congressional processes and politics (“process limits”) constrain congressional surveillance more than established statutory and Fourth Amendment mechanisms (“external limits”) or the inherent constraints of congressional authority (“internal limits”). Second, this Article argues that congressional surveillance is justified as an essential practice within the separation of powers. It offers legitimate benefits to Congress in inter-branch information disputes with the executive and in carrying out basic digital governance. The Article also argues that the Supreme Court’s decision in Trump v. Mazars USA, LLP mistakes a privacy concern that congressional surveillance poses as a threat to the separation of powers. At the same time, this Article rejects the traditional law enforcement approach to protecting individual privacy through judicial gatekeeping. Instead, the Article argues that the treatment of congressional surveillance must account for individual privacy interests while preserving Congress’s ability to assert itself as a co-equal branch—not the Mazars approach, and not a law enforcement approach, but something different

    Supersymmetric Electroweak Corrections to the Higgs Boson Decays into Chargino or Neutralino Pair

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    We investigate the supersymmetric electroweak corrections to the decay widths of the CP-odd and the heavy CP-even Higgs bosons into chargino or neutralino pair in the framework of the Minimal Supersymmetric Standard Model. The corrections involve the contributions of the order O(αewmt(b)3/mW3)O(\alpha_{ew} m_{t(b)}^3/m_W^3), O(αewmt(b)2/mW2)O(\alpha_{ew} m_{t(b)}^2/m_W^2) and O(αewmt(b)/mW)O(\alpha_{ew} m_{t(b)}/m_W). The detailed calculations of the electroweak corrections to the following decay processes: A0/H0χ~1+χ~1A^0/H^0 \to \tilde{\chi}^+_1 \tilde{\chi}^-_1 and A0/H0χ~20χ~20A^0/H^0 \to \tilde{\chi}^0_2 \tilde{\chi}^0_2 are presented in this paper. We find that these relative corrections maybe rather large quantitatively, and can exceed 10% in some regions of parameter space. The corrections to the decay A0/H0χ~10χ~20A^0/H^0 \to \tilde{\chi}^0_1 \tilde{\chi}^0_2 can be obtained analogously, but our results show that they are very small and can be neglected.Comment: 25 pages, 9 figures,accepted by Physical Review

    On pains and fear in childbirth: dimensions of listening

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    OBJETIVOS: desenvolver algumas reflexões sobre os possíveis efeitos benéficos de uma escuta responsiva à verbalização da presença de dor, medos e seus correlatos na cena do parto tomando como base dados empíricos de pesquisa realizada em maternidade situada na cidade de São Paulo, Brasil. MÉTODOS: estudo descritivo, de metodologia qualitativa, referenciado no quadro teórico da Psicologia Social, Psicanálise e Lingüística, utilizando entrevistas semi-estruturadas com 20 parturientes e sete doulas e observação de rotinas da maternidade. RESULTADOS: a análise, apoiada em categorias estabelecidas (subjetividade auto-referida, intersubjetividade, acolhimento, apropriação da experiência) mostrou, entre outros pontos, a importância e a valorização da interlocução qualificada no processo da parturição. Processo esse referido pelas parturientes como experiência de elevado grau de estresse, com vivências de dor, medos e ansiedades, porém mitigados pelo apoio recebido. CONCLUSÕES: a análise permitiu compreender as relações interpessoais como campo de interlocução e acolhimento percebidos pelas mulheres do estudo capazes de produzir efeitos favoráveis sobre as vivências do estresse materno, configurando-se como recurso técnico, qualificado e valioso, oferecido à parturienteOBJECTIVES: to reflect on the possibilities raised by listening to the life-experiences related by parturient women concerning pain on delivery, using empirical data from research carried out in a Maternity ward in the city of São Paulo, Brazil. METHODS: a descriptive study, with a qualitative methodology, based on the theoretical framework of Social Psychology, Psychoanalysis and Linguistics was carried out, by means of semi-structured interviews with parturient women and midwives, in addition to observation of maternity routines. RESULTS: one of the findings of the analysis, based on established categories (self-referred subjectivity, intersubjectivity, the appropriation of experience), was the importance of accurate interlocution in the course of the parturition process. This process was mentioned by the parturient women as an experience accompanied by a high level of stress, involving pain, fear and anxiety, although these may be mitigated by the support received. CONCLUSIONS: the analysis shed light on the role of interpersonal relationships involving dialogue and physical contact experienced by these women in reducing the stress of childbirth, suggesting that these constitute a valuable and effective resource that should be offered to parturient woma
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